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louder calls that are preferred by the females. A segment of the male population, known as 'satellite males' do not make these calls, but instead position themselves near loud males and attempt to intercept females drawn in by these calls. Males can switch between satellite-ing and calling. The satellite tactic is not associated with size or inferiority. Males normally call between 15 and 25 times per minute to attract mates starting in the evening and continuing through the night. Though only weighing a few grams, the Spring Peeper can produce a call as loud as songbirds that weigh 10-100 times as much. Male spring peepers have also been found to increase the duration and frequency of aggressive calls in response to increased calling intensity from others. These satellite males are also known to circumvent female choice and increase rates of hybridization between spring peeper lineages. Males produce both advertisement calls, long-range calls that signal a male's position to other males and to attract females, and courtship calls, short-range calls that are directed toward nearby females to inform them that the male is ready to mate.
586:; both the large ventricle size and blood hemoglobin concentrations play a significant role in the speed of oxygen consumption, which is intensely linked to the calling rate. When a male spring peeper calls, the sound is made by the contraction of external and internal oblique muscles which subsequently force air out of the lungs, then move through the larynx to the vocal sac. Of the total body weight of male spring peepers, 15% is made up of the trunk muscles – which contain 2% of lipids in the body by volume – and showcase enzymes with mitochondrial markers. Calls that occur at rapid rates result in prominent energetic costs, which is why stored lipids are the source of 90% of energy applied to calling.
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657:. During the breeding season, the spring peeper will be found near bodies of water that are free of fish and pollutants. During actual breeding, their choruses form near where trees hang by bushy plants or secondary forests. Their choruses can also be located within ponds, marshes, or swamps. They will usually resume call activity during warm rain, and are not commonly seen outside of their breeding choruses. During the non-breeding season, they will inhabit dead plant material from trees, shrubs, and other plants in the woods.
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and rapid growth. These lines allow it to be determined that spring peepers begin to breed, going into their third spring when they are two years old. Male spring peepers have reached sexual maturity at this time yet are smaller in size than females. Between spring peepers' second and third years, their body size increases significantly, then subsequently plateaus. During the first season of breeding, the two-year-old males produce higher frequency calls than males in their third and fourth seasons do
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greater extents compared to those in environments of lower temperatures. When comparing the improvement of mating calls in males, calls from above ground compared to those near the ground showcased better results. Local vegetation may also play a role in the betterment of arboreal calling compared to calling from lower levels due to the spatial aspects interrupting the call.
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spring peeper tadpoles. Each type of pond typically hosts different predators: temporary ponds host beetle larvae and dragonflies, intermediate ponds host salamanders and beetle larvae, and permanent ponds host fishes and dragonfly larvae. Each predator plays a role as a potential predator to the spring peeper, depending on which type of pond they inhabit.
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efficiencies in calling. More reserves of glycogen and lipids are required to maintain calling during the season and require additional rationing of reserves to prepare themselves for courtship. In females, there is a positive correlation between their snout length and wet ovary mass, which also correlates to an increase in body size.
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Females choose mates based on the speed and volume of these male calls. Interestingly, females also discriminate between distinct genetic lineages, with females preferring males of their own lineage, possibly due to the detrimental effects of hybridization. Older, larger males tend to have faster and
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widespread throughout the eastern United States and Canada. It prefers permanent ponds due to its advantage in avoiding predation; however, it is very adaptable with respect to the habitat it can live in. In northern regions, the frog is able to endure below freezing temperatures due to the capacity
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By looking at the different shading/coloring of concentric rings in the skeletons of spring peepers, age can be determined regarding the way of bone growth. Darker lines coincide with periods of higher survival rates during winter months. Lighter lines and areas represent periods of bone deposition
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Climate plays a major role in the timing of spring peeper breeding: studies have shown a correlation between temperature and the date of first call (when spring peepers start to breed). Though the precise factors affecting breeding timing are complex, there has been a trend towards earlier breeding
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which gives them the name "peeper", but it is often hard to pinpoint the source of the sound, especially when many are peeping at once. The peepers generally breed close to dusk and throughout the evening and early morning hours. Their calls can be heard from as far as one to two and a half miles,
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of the inner ear is responsible for decoding and detecting mating calls. The basilar papilla units within the female ear are tuned between 2100 and 3700 Hz and are dependent on intensity. Females tend to select low-frequency calls over high-frequency ones because the calls at the lower end of
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behavior and nature of spring peepers during mating. At sites with higher humidity and air temperature, there is increased dominance of arboreal behavior, which showcases that latitude may play a role. Spring peepers which reside in areas of warmer temperatures tend to exhibit arboreal behavior to
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Another impact of temperature is the duration of mating calls. There is a negative relationship between the length of mating calls and throat temperature. However, male spring peepers with superior calling frequencies are positively related to throat temperature. The temperature of the surrounding
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and glycogen contents of the female spring peeper's liver increased significantly slower than in males as body mass increased. At the beginning of the breeding season, male spring peepers have more significant amounts of bodily lipid content. Therefore, those that are larger are experiencing lower
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pads located on the tips of their non-webbed fingers, spring peepers can stick to particular materials. Males and females are differentiated from one another through the darkening of the skin beneath the jaw in males. Males have a body length ranging from 18–30 millimetres (0.71–1.18 in), and
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These chirping calls are significant for communication in mating as females choose their mates based on the frequency and volume associated with them. Satellite males who do not make any calls also strategically place themselves near those that make louder calls in an attempt to intercept females.
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Spring peeper larvae are thought to be poor competitors in environments where other anurans are present. This is typically due to the larval spring peepers' small size and lower levels of activity. The small size of the larval allows them to be able to deal with their depressed resource density.
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Drying periods of ponds typically align before or during the metamorphic larval stage of spring peepers due to their slower growth rates. This suggests that higher mortality rates may be an effect. Salamanders and particular kinds of fish are seen to have profound impacts on the survivorship of
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contents can be measured early in the reproductive process to determine the amount used in spring peepers and their correlation to body size. Nonpolar lipid and glycogen content in male spring peepers increased with body mass, whereas in females, it decreased or had minimal variation. The fiber
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call is explained by temperature. Calling rate can be modified by interactions among neighboring males, which tend to alternate calls with one another. The mating calls of the spring peeper consist of a sound very similar to a "peep" and are repeated by males up to 13,500 times per night. As a
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are mostly tan, brown, yellow, pink, olive green, and gray. All have a slightly pale yellow coloration on the inside of the thighs. Females are lighter-colored, while males are slightly smaller and usually have dark throats. Females have a bulkier abdomen. Skin color of Spring
Peepers is also
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In very cold weather, they hibernate under logs and loose bark. Spring peepers often call day and night as long as the temperature is above freezing, but they are mostly heard and usually not seen because they hide in dense plants. They are especially easy to hear due to their extremely loud
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In the northern reaches of their range, spring peepers must endure occasional periods of subfreezing temperatures during the breeding season. The species can tolerate the freezing of some of its body fluids, and undergoes hibernation under logs or behind loose bark on trees. It is capable of
932:. They are heard early in spring not long after the ice melts on the wetlands. The males usually call from the edges of the bodies of water in which they breed, hidden near the bases of shrubs or grasses. Even when calling, they may be difficult to locate and are most easily seen when in
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After they hatch, they remain tadpoles for two to three months before transforming into frogs and are ready to leave the water. Following breeding in the spring, the spring peepers' larval stage lasts two to three months. The spring peeper can live an estimated three years in the wild.
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isolating mechanism. As a potential agent of sexual selection, the mating call has many variations that may come into play as a major factor in mate choice by females. During mating, females monitor body size in correlation to the frequency of calls in an inverse matter. The
536:, and the organ itself. The tubules of the testis are surrounded by a pigment layer and a layer of flattened epithelial cells which are located within the surrounding connective tissue. The thickness of an average testis is about 1.10 mm and 2.5 mm in length. The
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The species has large toe pads for climbing, although it is more at home amid the loose debris of the forest floor. Because of its toepads, the spring peeper was once thought to be more closely related to treefrogs than chorus frogs and was placed in the genus
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environment of spring peepers also plays a role in the rate of calls, which is positively associated with the success of males during the mating and breeding period, showing that increasing site and throat temperatures result in increasing dominant frequency.
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Larval spring peepers harvest smaller amounts of resources, resulting in them having lower metabolic costs and a maintained growth rate. Spring peepers are said to occupy locations where predators have previously gotten ridden of bigger competitors.
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The spring peeper has no special status in most areas. It is common and widespread in the eastern regions. However, its habitats change quickly due to loss of wetlands. In some areas, its populations have decreased significantly.
653:, which eventually dry during the summer months), intermediate ponds that have interchanging periods of being dry and wet every year, ponds customarily filled year-round, swamps, and disturbed habitats, such as farm ponds and
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the spectrum are easier to detect. The calls of spring peepers are often repeated, which has been deemed essential concerning the evolution of the mate choice of females reacting to particular mating and courtship behavior.
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Lovett, Gary M. “When Do
Peepers Peep? Climate and the Date of First Calling in the Spring Peeper (Pseudacris Crucifer) in Southeastern New York State.” Northeastern Naturalist, vol. 20, no. 2, 2013, pp. 333–40. JSTOR,
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Although they are able to inhabit multiple types of ponds, spring peepers have been seen to be superior competitors in permanent ponds due to their higher caliber of predation resistance within the environment. This
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which acts both as an anti-freeze in its blood, and allows organs like the heart to enter into a state of protected dormancy. The peeper earned its name from its chirping call, which marks the beginning of spring.
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of the spring peeper, mature and remain there until the spring for breeding. After the seminiferous tubules are emptied, during mating season, the pigmentation of the testis changes from black to a dull grey.
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typically lays around 900 eggs per clutch, but up to 1000 are possible. Females will lay eggs singularly or in groups of two or three. Egg clusters are hidden under vegetation or debris at the water base.
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This frog has a vocal sac that expands and deflates like a balloon to create a short and distinct peeping sound. Only males can make this loud high-pitched noise, and they use it to attract mates.
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Cairns, N.A.; Cicchino, A.S.; Stewart, K.A.; Austin, J.D.; Lougheed, S.C. (March 2021). "Cytonuclear discordance, reticulation and cryptic diversity in one of North
America's most common frogs".
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Rashleigh, Karen R., & Michael
Crowell. “Spring peeper (Pseudacris crucifer) in Labrador, Canada: An update.” The Canadian Field-Naturalist, vol. 132, no. 2, 1 Jan. 2019, pp. 163–167,
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affected by temperature and light. Coloration is dynamic and adaptable in this species. It can be altered quickly, in 15 to 45 minutes, in order to better camouflage from predators.
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Spring peepers breed in southern areas from
October to March, depending on the local temperature. In northern areas, they breed between March and June, when the warm rains start.
745:. They do not climb high into trees, but hunt in low vegetation. Spring peepers living in deep, damp forests are active hunters both day and night, whereas those found in
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The mating displays of male spring peepers vary with different environmental factors: humidity and vegetation density. These factors play a significant role in the
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Temperature plays a large role in when the spring peeper begins breeding as well as the duration of mating. Warm spells result in a massive increased calling rate.
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Zimmitti, Salvatore J. (November 1999). "Individual
Variation in Morphological, Physiological, and Biochemical Features Associated with Calling in Spring Peepers (
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in the shallows. As in other frogs, an aggressive call is made when densities are high. This call is a rising trill closely resembling the breeding call of the
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415:, meaning cross-bearer), though sometimes the marking may be indistinct. Dark lines can also be found between the eyes and in a crossband on the hindlimbs of
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There are currently two subspecies recognized, although detailed genetic and behavioral analysis demonstrates they likely are not taxonomically accurate:
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Spring peepers are known to tolerate freezing temperatures by producing a glucose-based cryoprotectant to limit cell shrinkage and prevent cell freezing.
419:. It has a body length between less than 25 mm (0.98 in) to 38 mm (1.5 in) and a mass between 3 and 5 g (0.11 and 0.18 oz).
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edges restrict most hunting and other activity to night. The spring peeper's diet involves the filtering of particles from water columns and scouring
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1967:
Skelly, David K. (1997). "Tadpole
Communities: Pond permanence and predation are powerful forces shaping the structure of tadpole communities".
2085:"Ontogenetic and interspecific variation in timing of movement and responses to climatic factors during migrations by pond-breeding amphibians"
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in their muscles at greater levels. Males with higher calling rates also tend to inhibit larger ventricles and greater concentrations of blood
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Sullivan, Brian K.; Hinshaw, Steven H. (1990-12-31). "Variation in
Advertisement Calls and Male Calling Behavior in the Spring Peeper (
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In the spring peeper, most of its energy is used during courtship. Higher energetic costs in female spring peepers are associated with
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217:
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Blaustein, Andrew R.; Belden, Lisa K.; Olson, Deanna H.; Green, David M.; Root, Terry L.; Kiesecker, Joseph M. (14 December 2001).
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Gibbs, James P.; Breisch, Alvin R. (2001). "Climate
Warming and Calling Phenology of Frogs near Ithaca, New York, 1900–1999".
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911:, only much louder and rising slightly in tone. They are among the first frogs in the regions to call in the spring. Unlike
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Rugh, Roberts (1941). "Experimental
Studies on the Reproductive Physiology of the Male Spring Peeper, Hyla Crucifer".
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Ethier, Jeffrey P.; Fayard, Aurore; Soroye, Peter; Choi, Daeun; Mazerolle, Marc J.; Trudeau, Vance L. (2021-08-27).
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Cicchino, Amanda S; Cairns, Nicholas A; Bulté, Grégory; Lougheed, Stephen C (2019-10-07). Taborsky, Michael (ed.).
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Contact zone dynamics and the evolution of reproductive isolation in a North American treefrog, the spring peeper (
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645:. It frequently occurs in breeding aggregations of several hundred individuals, and commonly breeds in temporary
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The bigger, older, and more fit male spring peepers are typically superior callers. These types of males utilize
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Lykens, David V.; Forester, Don C. (1987). "Age Structure in the Spring Peeper: Do Males Advertise Longevity?".
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Lovett, Gary M. (June 2013). "When Do Peepers Peep? Climate and the Date of First Calling in the Spring Peeper (
488:
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1885:
1808:"Life history traits and reproductive ecology of North American chorus frogs of the genus Pseudacris (Hylidae)"
2595:"Can alternative mating tactics facilitate introgression across a hybrid zone by circumventing female choice?"
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Duffitt, Ashley D.; Finkler, Michael S. (2011). "Sex-Related Differences in Somatic Stored Energy Reserves of
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Kats, Lee B.; van Dragt, Randall G. (1986). "Background Color-Matching in the Spring Peeper, Hyla crucifer".
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Tipton, Bob L., and Bob L. Tipton. Texas Amphibians a Field Guide. 1st ed., University of Texas Press, 2012,
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In the female spring peeper, protruding beyond the lower jaw of the frog sits its snout. Through the use of
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Tadpoles are suspension feeders, therefore they graze on inorganic and organic matter. They also feed on
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surviving the freezing of its internal body fluids to temperatures as low as −8 °C (17.6 °F).
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root meaning "cross-bearing", a reference to the cross-like pattern on the spring peeper's dorsal side.
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Skelly, David K. (1996-08-01). "Pond Drying, Predators, and the Distribution of Pseudacris Tadpoles".
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1276:"The effect of temperature on calling energetics of the spring peeper (Pseudacris crucifer)"
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Spring peepers almost always migrate at night. This is most likely to prevent drying out.
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2056:"High and dry: Trade-off in arboreal calling in a treefrog mediated by local environment"
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2212:"Interactive Effects of UV-B and Copper on Spring Peeper Tadpoles (Pseudacris Crucifer)"
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Skelly, David K. (1995). "Competition and the Distribution of Spring Peeper Larvae".
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Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America
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A male, spring peeper with its vocal sac inflated as it performs its mating call.
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does not have white lines on its lips, but its lips may be lighter than its head.
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Stewart, K. A.; Austin, J. D.; Zamudio, K. R.; Lougheed, S. C. (February 2016).
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It has been established that the mating call of male spring peepers acts as an
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The southern spring peeper's habitat includes the Gulf Coast from southeastern
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females have a body length ranging from 20–35 millimetres (0.79–1.38 in).
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2464:"Testing for intraspecific postzygotic isolation between cryptic lineages of
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and ranges to the Atlantic provinces in Canada as far west as Saskatchewan.
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Wells, Kentwood D.; Taigen, Theodore L.; O'Brien, Jennifer A. (1996-01-01).
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Schwartz, Joshua J. (1989). "Graded Aggressive Calls of the Spring Peeper,
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2409:"Contact zone dynamics during early stages of speciation in a chorus frog (
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Spring peepers are distinguished by a dark X-shaped marking on their back.
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regions to support the aquatic environment the eggs and tadpoles need.
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as average temperatures have increased since the early 20th century.
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whose call activity is dependent on seasonality, 63% of variance in
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The spring peeper is a tan or brown frog with a dark cross on its
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of its liver to exude and flush the bloodstream with a glucose
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1056:, found all over the eastern United States and eastern Canada.
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2717:. The Regents of the University of Michigan and its licensors
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and Pseudacris triseriata during the Early Breeding Season".
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males, the blackened pigmentation of the testis affects the
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10.1656/1528-7092(2005)004[0015:IEOUAC]2.0.CO;2
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tadpoles, about 4–5 wk old and 24 hours away from complete
556:, which occurs before breeding. Stored reserves of fat and
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Spring peepers live primarily in forests and regenerating
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is found along the southern Gulf Coast from southeastern
2527:. Ann Arbor: University of Michigan Press. p. 133.
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1176:(Integrated Taxonomic Information System). www.itis.gov.
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Stewart, K. A.; Hudson, C. M.; Lougheed, S. C. (2017).
1409:(4th ed.). Houghton Mifflin Harcourt. p. 140.
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As their common name implies, the spring peeper has a
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Tadpole 2015-04-16-12.04.26 ZS PMax (16571152244) (2)
1314:"Crucifer | Search Online Etymology Dictionary"
544:. In the late fall, the spermatozoa, located in the
3135:
2874:
2462:Stewart, Kathryn A.; Lougheed, Stephen C. (2013).
2083:Todd, Brian D.; Winne, Christopher T. (May 2006).
2525:Amphibians and reptiles of the Great Lakes Region
1440:Proceedings of the American Philosophical Society
2857:Spring Peeper on Reptiles and Amphibians of Iowa
2820:"EEK! – Critter Corner – Northern Spring Peeper"
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3245:Fauna of the Great Lakes region (North America)
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1122:10.2305/IUCN.UK.2022-1.RLTS.T55892A193392474.en
725:, emerging at night to feed primarily on small
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2253:"BioKIDS – Kids' Inquiry of Diverse Species,
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1190:"Northern Spring Peeper / Rainette Crucifère"
540:are a cluster of masses jutting out from the
8:
1097:IUCN SSC Amphibian Specialist Group (2022).
1032:The species is listed as threatened in both
2360:. Maryland Department of Natural Resources.
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865:The call in relative isolation from others.
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1996:"Adaptations of frogs to survive freezing"
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2381:The Regents of the University of Michigan
2210:Baud, Donald R.; Beck, Melvin L. (2005).
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2019:
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1866:https://doi.org/10.22621/cfn.v132i2.2051
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3255:Fauna of the Southeastern United States
3250:Fauna of the Northeastern United States
1604:"Amphibian Breeding and Climate Change"
1089:
460:
2216:Southeastern Naturalist (Steuben, Me.)
1216:"Survival of Frogs in Low Temperature"
893:
2738:Molecular Phylogenetics and Evolution
2127:www.virginiaherpetologicalsociety.com
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1878:
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1686:10.1046/j.1523-1739.2001.0150041175.x
1561:Physiological and Biochemical Zoology
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7:
3260:Ecology of the Appalachian Mountains
2550:http://www.jstor.org/stable/43287117
1907:"Spring Peeper (Pseudacris crucifer"
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928:chorus, they resemble the sounds of
3215:IUCN Red List least concern species
2298:"Spring Peeper National Geographic"
1724:) in Southeastern New York State".
1108:IUCN Red List of Threatened Species
2304:. 11 November 2010. Archived from
894:Problems playing these files? See
710:and other organisms in the water.
570:Respiratory and circulatory system
25:
2123:"Virginia Herpetological Society"
1932:Stewart, Kathryn (4 March 2013).
1214:Schmid, William D. (1982-02-05).
1000:Spring peepers predators include
872:Collective spring peepers calling
626:occurs in the entire east of the
2804:
2790:
1629:10.1046/j.1523-1739.2001.00307.x
876:
854:
499:
487:
475:
463:
104:
3235:Amphibians of the United States
2599:Journal of Evolutionary Biology
1004:larvae (when in tadpole form),
886:A few hundred in a single pond.
580:β-hydroxyacyl CoA dehydrogenase
1421:https://doi.org/10.7560/737358
622:, United States. Its northern
1:
2257:, Spring Peeper: INFORMATION"
681:Home range and territoriality
470:Spring peeper, adult, Florida
443:, but it is now in the genus
329:— Hardy & Borroughs, 1986
3265:Amphibians described in 1838
850:Single spring peeper calling
606:Geographic range and habitat
2758:10.1016/j.ympev.2020.107042
2277:depending on their numbers.
2089:Canadian Journal of Zoology
1994:Layne, Jr; Lee, Re (1995).
1343:National Geographic Society
3281:
3220:NatureServe secure species
2523:Harding, James H. (1997).
1825:10.1186/s12983-021-00425-w
942:Pseudacris nigrita nigrita
907:call similar to that of a
761:Reproduction and lifecycle
249:
242:
234:
225:
206:
199:
101:Scientific classification
99:
79:
57:
48:
39:
34:
2840:Natural Resources Canada
2552:. Accessed 12 Feb. 2024.
1888:. U.S. Geological Survey
1194:Opinicon Natural History
948:Female/male interactions
450:The color variations of
2651:Wildlife Journal Junior
1911:Wildlife Journal Junior
1726:Northeastern Naturalist
1405:Powell, Robert (2016).
1339:"Spring Peeper Profile"
1292:10.1163/156853896X00180
1240:10.1126/science.7058335
832:Mate searching behavior
532:, the underside of the
325:Parapseudacris crucifer
3102:northern-spring-peeper
1509:Journal of Herpetology
1115:: e.T55892A193392474.
974:
962:
843:
823:
800:
774:
434:Anatomy and physiology
2472:Ecology and Evolution
2261:www.biokids.umich.edu
2069:10.1093/beheco/arz169
1144:"Pseudacris crucifer"
972:
960:
842:
814:
798:
768:
411:(thus the Latin name
3240:Amphibians of Canada
2801:at Wikimedia Commons
1812:Frontiers in Zoology
1738:10.1656/045.020.0209
1666:Conservation Biology
1608:Conservation Biology
1012:, and larger frogs.
961:Spring Peeper mating
938:southern chorus frog
546:seminiferous tubules
530:seminiferous tubules
506:Spring peeper, adult
494:Spring peeper, adult
388:is derived from the
27:Species of amphibian
2933:Pseudacris-crucifer
2906:Pseudacris crucifer
2876:Pseudacris crucifer
2812:Pseudacris crucifer
2798:Pseudacris crucifer
2750:2021MolPE.15607042C
2713:Pseudacris crucifer
2653:. New Hampshire PBS
2645:Pseudacris crucifer
2564:Pseudacris crucifer
2484:2013EcoEv...3.4621S
2466:Pseudacris crucifer
2430:10.1038/hdy.2015.96
2411:Pseudacris crucifer
2356:Pseudacris crucifer
2286:. 11 November 2010.
2284:National Geographic
2255:Pseudacris crucifer
2238:– via BioOne.
2165:1995Oecol.103..203S
2012:1995ClRes...5...53L
1936:Pseudacris crucifer
1913:. New Hampshire PBS
1764:Pseudacris crucifer
1722:Pseudacris crucifer
1678:2001ConBi..15.1175G
1620:2001ConBi..15.1804B
1557:Pseudacris crucifer
1505:Pseudacris crucifer
1378:Pseudacris crucifer
1232:1982Sci...215..697S
1173:Pseudacris crucifer
1101:Pseudacris crucifer
1024:Conservation status
1002:great diving beetle
771:Pseudacris crucifer
718:Spring peepers are
371:Pseudacris crucifer
334:Pseudacris crucifer
290:Hyliola pickeringii
265:Hylodes pickeringii
210:Pseudacris crucifer
51:Conservation status
2173:10.1007/BF00329081
2060:Behavioral Ecology
1969:American Scientist
975:
963:
844:
824:
801:
775:
422:Unlike some other
3202:
3201:
3110:Open Tree of Life
2868:Taxon identifiers
2853:, audio recording
2822:. dnr.state.wi.us
2795:Media related to
2612:10.1111/jeb.13017
2534:978-0-472-09628-2
2478:(14): 4621–4630.
1376:"Spring Peeper –
1280:Amphibia-Reptilia
1226:(4533): 697–698.
1065:P. c. bartramiana
1061:P. c. bartramiana
881:
860:
665:species requires
641:or semipermanent
520:Glands and toxins
362:
361:
277:Acris pickeringii
94:
74:
16:(Redirected from
3272:
3195:
3194:
3182:
3181:
3169:
3168:
3156:
3155:
3154:
3128:
3127:
3118:
3117:
3105:
3104:
3092:
3091:
3079:
3078:
3066:
3065:
3053:
3052:
3040:
3039:
3027:
3026:
3014:
3013:
3001:
3000:
2988:
2987:
2975:
2974:
2962:
2961:
2949:
2948:
2936:
2935:
2923:
2922:
2910:
2909:
2908:
2895:
2894:
2893:
2863:
2847:
2842:. Archived from
2831:
2829:
2827:
2809:Data related to
2808:
2794:
2778:
2777:
2733:
2727:
2726:
2724:
2722:
2707:
2701:
2700:
2672:
2663:
2662:
2660:
2658:
2639:
2633:
2632:
2614:
2590:
2584:
2583:
2559:
2553:
2545:
2539:
2538:
2520:
2514:
2513:
2503:
2492:10.1002/ece3.851
2459:
2453:
2452:
2442:
2432:
2404:
2393:
2392:
2390:
2388:
2373:
2362:
2361:
2350:
2344:
2343:
2323:
2310:
2309:
2294:
2288:
2287:
2270:
2268:
2267:
2249:
2240:
2239:
2207:
2201:
2200:
2148:
2137:
2136:
2134:
2133:
2119:
2113:
2112:
2080:
2074:
2073:
2071:
2051:
2042:
2041:
2023:
2021:10.3354/cr005053
2000:Climate Research
1991:
1985:
1984:
1964:
1958:
1957:
1929:
1923:
1922:
1920:
1918:
1903:
1897:
1896:
1894:
1893:
1882:
1869:
1862:
1856:
1855:
1845:
1827:
1803:
1792:
1791:
1759:
1750:
1749:
1717:
1706:
1705:
1672:(4): 1175–1178.
1661:
1652:
1651:
1641:
1631:
1614:(6): 1804–1809.
1599:
1593:
1592:
1552:
1541:
1540:
1521:10.1670/09-263.1
1500:
1491:
1490:
1462:
1456:
1455:
1435:
1424:
1417:
1411:
1410:
1402:
1391:
1390:
1388:
1387:
1371:
1358:
1357:
1355:
1354:
1349:on June 14, 2007
1345:. Archived from
1335:
1318:
1317:
1310:
1304:
1303:
1271:
1260:
1259:
1211:
1205:
1204:
1202:
1201:
1186:
1177:
1168:
1162:
1161:
1159:
1157:
1140:
1134:
1133:
1131:
1129:
1124:
1094:
883:
882:
862:
861:
841:
773:) eggs in water.
614:to southeastern
590:Thermoregulation
576:citrate synthase
503:
491:
479:
467:
356:
343:
330:
321:
312:
303:Hyla pickeringii
299:
286:
273:
261:
230:
212:
192:P. crucifer
109:
108:
88:
85:
84:
68:
63:
62:
44:
32:
21:
3280:
3279:
3275:
3274:
3273:
3271:
3270:
3269:
3205:
3204:
3203:
3198:
3190:
3185:
3177:
3172:
3164:
3159:
3150:
3149:
3144:
3131:
3123:
3121:
3113:
3108:
3100:
3095:
3087:
3084:Observation.org
3082:
3074:
3069:
3061:
3056:
3048:
3043:
3035:
3030:
3022:
3017:
3009:
3004:
2996:
2991:
2983:
2978:
2970:
2965:
2957:
2952:
2944:
2939:
2931:
2926:
2918:
2913:
2904:
2903:
2898:
2889:
2888:
2883:
2870:
2836:"Spring peeper"
2834:
2825:
2823:
2818:
2787:
2782:
2781:
2735:
2734:
2730:
2720:
2718:
2709:
2708:
2704:
2689:10.2307/1447523
2674:
2673:
2666:
2656:
2654:
2643:"Spring Peeper
2641:
2640:
2636:
2592:
2591:
2587:
2561:
2560:
2556:
2546:
2542:
2535:
2522:
2521:
2517:
2461:
2460:
2456:
2406:
2405:
2396:
2386:
2384:
2377:"Spring Peeper"
2375:
2374:
2365:
2352:
2351:
2347:
2325:
2324:
2313:
2308:on May 7, 2017.
2296:
2295:
2291:
2280:"Spring Peeper"
2278:
2265:
2263:
2251:
2250:
2243:
2209:
2208:
2204:
2150:
2149:
2140:
2131:
2129:
2121:
2120:
2116:
2101:10.1139/z06-054
2082:
2081:
2077:
2053:
2052:
2045:
1993:
1992:
1988:
1966:
1965:
1961:
1931:
1930:
1926:
1916:
1914:
1905:
1904:
1900:
1891:
1889:
1886:"Spring Peeper"
1884:
1883:
1872:
1863:
1859:
1805:
1804:
1795:
1780:10.2307/1446500
1761:
1760:
1753:
1719:
1718:
1709:
1663:
1662:
1655:
1601:
1600:
1596:
1554:
1553:
1544:
1502:
1501:
1494:
1479:10.2307/1444895
1464:
1463:
1459:
1437:
1436:
1427:
1418:
1414:
1404:
1403:
1394:
1385:
1383:
1374:LeClere, Jeff.
1373:
1372:
1361:
1352:
1350:
1337:
1336:
1321:
1312:
1311:
1307:
1273:
1272:
1263:
1213:
1212:
1208:
1199:
1197:
1188:
1187:
1180:
1169:
1165:
1155:
1153:
1142:
1141:
1137:
1127:
1125:
1096:
1095:
1091:
1086:
1046:
1026:
998:
989:basilar papilla
980:
955:
950:
901:
900:
892:
890:
889:
888:
887:
884:
877:
874:
868:
867:
866:
863:
855:
852:
845:
839:
834:
829:
793:
780:
769:Spring peeper (
763:
716:
704:
702:Larva (tadpole)
699:
683:
608:
592:
572:
522:
507:
504:
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492:
483:
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471:
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436:
405:
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103:
95:
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60:
53:
28:
23:
22:
15:
12:
11:
5:
3278:
3276:
3268:
3267:
3262:
3257:
3252:
3247:
3242:
3237:
3232:
3227:
3222:
3217:
3207:
3206:
3200:
3199:
3197:
3196:
3183:
3170:
3157:
3141:
3139:
3133:
3132:
3130:
3129:
3119:
3106:
3093:
3080:
3067:
3054:
3041:
3028:
3015:
3002:
2989:
2976:
2963:
2950:
2937:
2924:
2911:
2896:
2880:
2878:
2872:
2871:
2866:
2860:
2859:
2854:
2848:
2846:on 2008-10-26.
2832:
2816:
2815:at Wikispecies
2802:
2786:
2785:External links
2783:
2780:
2779:
2728:
2702:
2683:(3): 599–605.
2664:
2634:
2605:(2): 412–421.
2585:
2574:(2): 172–181.
2554:
2540:
2533:
2515:
2454:
2423:(2): 239–247.
2394:
2363:
2345:
2334:(2): 216–223.
2311:
2289:
2241:
2202:
2159:(2): 203–207.
2138:
2114:
2095:(5): 715–722.
2075:
2043:
1986:
1959:
1924:
1898:
1870:
1857:
1793:
1751:
1732:(2): 333–340.
1707:
1653:
1594:
1573:10.1086/316706
1567:(6): 666–676.
1542:
1515:(2): 224–229.
1492:
1473:(1): 109–115.
1457:
1446:(5): 617–632.
1425:
1412:
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1359:
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1305:
1286:(2): 149–158.
1261:
1206:
1178:
1163:
1135:
1088:
1087:
1085:
1082:
1081:
1080:
1059:The southern,
1057:
1054:P. c. crucifer
1052:The northern,
1045:
1042:
1025:
1022:
997:
994:
979:
976:
954:
951:
949:
946:
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870:
869:
864:
853:
848:
847:
846:
837:
836:
835:
833:
830:
828:
825:
816:P. c. crucifer
792:
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381:cryoprotectant
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35:Spring peeper
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3143:
3142:
3140:
3138:
3137:Hyla crucifer
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2851:Spring peeper
2849:
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2568:Herpetologica
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2030:2374.MIA/5875
2027:
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2013:
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1639:2027.42/75127
1635:
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320:— Myers, 1927
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52:
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18:Hyla crucifer
3225:Chorus frogs
3136:
2875:
2844:the original
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2811:
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2719:. Retrieved
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1347:the original
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1198:. Retrieved
1196:. 2009-09-17
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1172:
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3058:NatureServe
3006:iNaturalist
2915:AmphibiaWeb
2900:Wikispecies
2721:19 November
2387:19 November
2274:mating call
1774:(4): 1146.
1149:NatureServe
984:etiological
978:Mate choice
925:P. crucifer
920:P. feriarum
784:P. crucifer
655:borrow pits
628:Mississippi
624:conspecific
452:P. crucifer
428:P. crucifer
417:P. crucifer
403:Description
376:chorus frog
237:P. crucifer
91:NatureServe
3209:Categories
3152:Q109526434
2744:: 107042.
2266:2019-03-20
2132:2022-11-28
2062:: arz169.
1954:1886372286
1940:(Thesis).
1892:2009-11-15
1386:2009-11-15
1353:2009-11-15
1200:2021-03-19
1128:2 December
1084:References
896:media help
778:Brood size
751:periphyton
729:, such as
663:amphibious
584:hemoglobin
534:peritoneum
445:Pseudacris
424:Pseudacris
179:Pseudacris
2774:229324658
2383:. BioKIDS
2153:Oecologia
2109:0008-4301
1946:1974/7841
1834:1742-9994
1818:(1): 40.
1382:. HerpNet
1300:1568-5381
1248:0036-8075
996:Predation
720:nocturnal
639:ephemeral
635:woodlands
426:species,
235:Range of
186:Species:
124:Kingdom:
118:Eukaryota
3146:Wikidata
3063:2.105099
3024:11303363
2885:Wikidata
2766:33338660
2657:28 April
2629:42215306
2621:27862550
2510:24363891
2449:26626576
2417:Heredity
2236:83788323
2197:22425047
2189:28306774
2038:24863316
1981:27856689
1950:ProQuest
1917:28 April
1852:34452622
1746:86691153
1702:86182135
1648:26685121
1589:34950753
1581:10603330
1537:83807187
1529:41415272
1156:17 April
1151:Explorer
1044:Taxonomy
953:Courting
934:amplexus
791:Lifespan
755:detritus
747:woodland
687:arboreal
643:wetlands
558:glycogen
513:adhesive
413:crucifer
386:Crucifer
296:Mocquard
270:Holbrook
244:Synonyms
164:Family:
148:Amphibia
138:Chordata
134:Phylum:
128:Animalia
114:Domain:
71:IUCN 3.1
3230:Cryozoa
3179:2428184
2998:2428182
2972:1048371
2891:Q135015
2826:6 March
2746:Bibcode
2697:1447523
2580:3892159
2501:3867898
2480:Bibcode
2440:4806893
2340:3892054
2302:Animals
2181:4221021
2161:Bibcode
2008:Bibcode
1843:8394169
1788:1446500
1694:3061337
1674:Bibcode
1616:Bibcode
1487:1444895
1256:7058335
1228:Bibcode
1220:Science
1077:Georgia
1073:Florida
743:spiders
731:beetles
667:marshes
620:Florida
616:Georgia
353:Cocroft
220:, 1838)
174:Genus:
168:Hylidae
154:Order:
144:Class:
89: (
87:Secure
69: (
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3122:uBio:
3115:747287
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1038:Kansas
1010:skunks
1006:snakes
827:Mating
741:, and
355:, 1994
342:, 1986
340:Hedges
311:, 1899
298:, 1899
285:, 1857
272:, 1839
260:, 1838
3166:3NCR9
3125:26067
3050:55892
3019:IRMNG
3011:24268
2959:4NH9F
2770:S2CID
2693:JSTOR
2625:S2CID
2576:JSTOR
2336:JSTOR
2232:S2CID
2193:S2CID
2177:JSTOR
2034:JSTOR
1977:JSTOR
1784:JSTOR
1742:S2CID
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1690:JSTOR
1644:S2CID
1585:S2CID
1533:S2CID
1525:JSTOR
1483:JSTOR
1448:JSTOR
1170:ITIS
1069:Texas
739:flies
714:Adult
708:algae
671:swamp
647:ponds
637:near
612:Texas
409:dorsa
390:Latin
158:Anura
3187:ITIS
3174:GBIF
3097:ODNR
3071:NCBI
3045:IUCN
3032:ITIS
2993:GBIF
2980:EPPO
2946:8131
2941:BOLD
2828:2012
2762:PMID
2723:2009
2681:1996
2659:2022
2617:PMID
2529:ISBN
2506:PMID
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2105:ISSN
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1848:PMID
1830:ISSN
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1034:Iowa
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753:and
735:ants
697:Diet
578:and
441:Hyla
364:The
309:Cope
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2928:ASW
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2016:doi
1942:hdl
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