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Red flour beetle

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Female red flour beetles are also known to store sperm after mating. More sperm is stored by the first mating, which leads to less sperm stored in subsequent matings. However, amount of stored sperm does not stop the last male mate from fertilizing the egg. This is due to the fact that with each mating, males can remove previously stored sperm thus giving their own sperm an advantage to fertilize the egg.
31: 411:. Polygamy in less genetically diverse populations is a means of avoiding fertilization between beetles that are closely related since they may be genetically incompatible. The more partners that a male or female has, the higher the chances that at least one of the matings is with an unrelated partner and the greater the genetic diversity in the offspring. In this way, 261:, are "the two most common secondary pests of all plant commodities in store throughout the world." A research on hermetic storage of wheat and maize flour protects against red flour beetle (2017) was conducted that found 12 days under hermetic storage results in 100% RFB mortality and confirms that hermetic environments are sufficient for controlling insect pests. 286:. It has, as a consequence, a more southern distribution, though both species are worldwide in heated environments. The adult is long-lived, sometimes living more than three years. Although previously regarded as a relatively sedentary insect, it has been shown in molecular and ecological research to disperse considerable distances by flight. 379:, maintained fitness for up to 20 generations. By contrast, lineages derived form populations that experienced either weak or no sexual selection exhibited rapid fitness decline under inbreeding, and all such populations became extinct within 10 generations. These results indicated that sexual selection reduces 444:
In polygamous beetles, the male that last fertilizes the female ends up having a higher fertilization success. Polygamy can thus be seen as an evolutionary result as males compete to be the last to fertilize the female's egg and contribute more to the next generation. Sperm precedence is thus a means
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The availability of resources and population size can greatly affect how many matings each individual participates in. Increased population size within a given area with fixed resources can limit how many offspring can survive. This can result in heavy competition between males to be a female's last
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gene. E-cadherin is a membrane bound protein of epithelial cells involved in cell-cell adhesion. This resulted in developmental issues in dorsal closure. RNAi knock-down of E-cadherin shows the same effect. This shows that CRISPR technology and gene editing are viable options for studying the red
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During mating, red flour beetles are known to engage in polygamous behavior. Male flour beetles have been known to recognize their relatives while the females do not have this capability. Lack of the ability to recognize their relatives has led females to mate with any male within the population.
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Although multiple mating events may also increase the likelihood of finding genetically compatible sperm, genetic compatibility is not always a major factor driving polyandrous behavior. Increased embryo viability due to increased genetic compatibility did not significantly increase the number of
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Mate choice also varies among male beetles, though they generally prefer mature, virgin females (identified by the absence of any scent from secretions left by previous mates). If a female beetle has only one mate, and his sperm count is sufficient, that male has a very high chance of siring
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In some studies, however, it has been noted that fertilization can still occur when related beetles mate. Nonetheless, it is worth noting that there is a significantly lower number of offspring produced when inbred beetles mate than when the matings are between out-bred partners. Successful
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mating behavior. Within a single copulation period, a female will mate with multiple males. Any one male may have a low sperm count, having depleted its supply through prior matings, so mating with several increases the female's likelihood of obtaining an adequate amount of sperm.
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as ejaculate from one mating can be removed during subsequent matings. When resources are limited, increased cannibalism among competing males can ultimately decrease fitness for the population as a whole, as it decreases both offspring production and survival.
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Lumley AJ, Michalczyk Ł, Kitson JJ, Spurgin LG, Morrison CA, Godwin JL, Dickinson ME, Martin OY, Emerson BC, Chapman T, Gage MJ. Sexual selection protects against extinction. Nature. 2015 Jun 25;522(7557):470-3. doi: 10.1038/nature14419. Epub 2015 May 18. PMID
343:) is genetically based. Higher attractiveness does not, however, correlate with higher fitness of offspring. Genes for more attractive pheromones are not a reliable indicator that the male also has genes which will improve offspring survival. 415:
is reduced and diversity is increased in a population. For this reason, females copulate with more males when genetic diversity is low in order to attain fertilization success and also increase fitness in their subsequent offspring.
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in red flour beetles. Even though there is successful fertilization, it is observed that a lower number of total offspring is produced, which can be argued to be a type of inbreeding depression since it lowers reproduction fitness.
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The red flour beetle attacks stored grain and other food products including flour, cereals, pasta, biscuits, beans, and nuts, causing loss and damage. The United Nations, in a recent post-harvest compendium, estimated that
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Females from different populations of red flour beetles are highly polyandrous, while others avoid having multiple mates. This may indicate that the overall advantage or disadvantage likewise varies across environments.
467:. The red flour beetle and the fruit fly share about 10,000-15,000 genes. Despite their shared genes, they do have their differences. During development, anterior-posterior patterning is normally regulated by the 394:
in red flour beetles is a behavior common to both males and females of this species. Polyandry is thus polygamy in the female members of a population as discussed in the section above. On the other hand,
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depression, especially when there is competition from other males. There is a higher fertilization success in out-bred males when they compete with inbred males to fertilize the same female.
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adult beetles over time, which indicates that it did not play a significant role in the fitness of the overall population. However, increased genetic compatibility could increase the
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offspring with her. Males with a greater ability to identify preferred mates have an advantage, as do males with more strongly scented secretions that better deter subsequent males.
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In red flour beetles, females that engage in polygamous behavior produce more offspring than those that are less polygamous. Polygamy is mostly seen in populations that lack
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Kumar, H. Panigrahi, M. Chhotaray, S. 2018. Red flour beetle (Tribolium castaneum): From population genetics to functional genomics. Veterinary World. 11(8): 1043-1046
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In red flour beetles, males are known to engage in polygamous behavior. Research largely shows that Male red flour beetles engage in polygamous behavior to avoid
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Adult beetles are small, around 3–4 mm long (1/8 inches), of a uniform rust, brown or black color. Head and pronotum are sometimes darker than rest of body.
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Gilles, A. Schinko, J. Averof, M. 2015. Efficient CRISPR-mediated gene targeting and transgene replacement in the beetle Tribolium castaneum. Development.
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The red flour beetle has played an important role as a model organism serving as a model for development and functional genomics. Compared to
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Boake, Christine R. B. (1985). "Genetic Consequences of Mate Choice: A Quantitative Genetic Method for Testing Sexual Selection Theory".
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Grünwald, S.; et al. (2013). "The Red Flour Beetle Tribolium castaneum as a Model to Monitor Food Safety and Functionality".
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fertilization observed in a small portion of research in related beetles has led some biologists to claim that there may be no
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Richards, S. Gibbs, R. Weinstock, G. 2008. The genome of the model beetle and pest Tribolium castaneum. Nature. 452: 949-955.
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Pai, Aditi; Bennett, Lauren; Yan, Guiyun (2005). "Female multiple mating for fertility assurance in red flour beetles (
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The beetle is of Indo-Australian origin and less able to survive outdoors than the closely related species
1911: 1906: 1896: 1583: 831:"Hermetic storage of wheat and maize flour protects against red flour beetle (Tribolium castaneum Herbst)" 264: 1658: 1546: 1061: 459:, the red flour beetle more closely represents the development of other insects. In 2008, the genome of 438: 421: 356: 282: 258: 138: 1462: 1837: 1679: 1090: 842: 1525: 1251:
Lewis, Jutkiewicz (1998). "Sperm Precedence and sperm storage in multiply mates red flour beetles".
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of evolutionary competition through which the males try to achieve greater reproductive success.
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of a population, which can be advantageous in situations of rapid environmental change.
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for multiple years became resilient to extinction, and furthermore, when subjected to
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Yan, Yan; Williams, Scott B.; Murdock, Larry L.; Baributsa, Dieudonne (2017-09-26).
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Experimental populations of red flour beetles that had been subjected to strong
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Mate choice strategies vary among female beetles. Moreover, they are capable of
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Welsh Jennifer. (2011)."Inbreeding makes female beetles frisky." Live Science.
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Arnaud, Haubruge, L,E (1999). "Mating Behavior and Male Mate Choice in
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Michalczyk, L; Martin, O; Millard, A; Emerson, B; Gage, M (2010).
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transcripts to show a knock-down of gene function. Compared to in
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was sequenced, analyzed, and compared to other organisms such as
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Ridley, A.; et al. (2011). "The spatiotemporal dynamics of
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In red flour beetles, a male's ability to attract females (via
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by some authors but they actually refer to other species:
500:(RNA interference) experiments. RNAi is RNA that degrades 1519: 1450:. Washington: United States Government Printing Office. 1142:
Proceedings of the Royal Society B: Biological Sciences
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refers to polygamy practiced by males in a population.
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load, and by doing so improves population viability.
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Red flour beetles are particularly useful for doing
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Polygamy in populations that lack genetic diversity
477:. However, in the red flour beetle, there is no 1212:"Why do so many flour beetle copulations fail?" 1183: 1181: 1031: 1029: 1027: 988:Pai, Aditi; Feil, Stacy; Yan, Guiyun (2007). 8: 1066:: CS1 maint: multiple names: authors list ( 983: 981: 979: 977: 975: 943: 941: 939: 1435: 1433: 1578: 783:"The flour beetles of the genus Tribolium" 523:flour beetle as an insect model organism. 29: 20: 1486: 1311: 1227: 1161: 872: 854: 1335:Arnaud, L; Gage, M; Haubruge, E (2001). 816:In Compendium on Post-harvest Operations 1341:Entomologia Experimentalis et Applicata 1216:Entomologia Experimentalis et Applicata 900:(Herbst): adult flight and gene flow". 809:"Insect damage: damage on post-harvest" 732: 1059: 1380: 1378: 1205: 1203: 7: 1838:73ce9a8f-b283-4c12-9122-9ef23f6c294f 1737:32958b88-a16f-429b-b03c-a714e92016b7 1132:Fedina, T. Y.; Lewis, S. M. (2004). 1475:Bulletin of Zoological Nomenclature 1253:Behavioral Ecology and Sociobiology 1292:Proceedings of the Royal Society B 481:orthologue, but instead the genes 433:Polygyny and fertilization success 14: 294:Female red flour beetles exhibit 208:of stored products, particularly 1353:10.1046/j.1570-7458.2001.00801.x 1229:10.1111/j.1570-7458.2012.01292.x 914:10.1111/j.1365-294X.2011.05049.x 42: 1544:Confused and red flour beetles. 1471:(Fabricius, 1775) Z.N.(S.)2575" 1443:The flour beetles of the genus 1210:Tyler, F; Tregenza, T (2012). 1040:(Coleoptera, Tenebrionidae)". 721:Home stored product entomology 1: 1103:10.1126/science.227.4690.1061 271:as shown under the microscope 173: 856:10.1371/journal.pone.0185386 954:Canadian Journal of Zoology 1938: 1403:Reference, Genetics Home. 1887:Beetles described in 1797 1010:10.1007/s10682-006-9146-4 170: 163: 144: 137: 39:Scientific classification 37: 28: 23: 1507:Handbook of Pest Control 781:Good, Newell E. (1936). 493:in anterior patterning. 276:Distribution and habitat 1922:Insect pests of millets 1558:"Rust Red Flour Beetle" 1409:Genetics Home Reference 1054:10.1163/156853999500677 413:genetic incompatibility 316:Potential disadvantages 1892:Household pest insects 1304:10.1098/rspb.2010.0514 1154:10.1098/rspb.2004.2731 742:Yellow Biotechnology I 272: 237: 1547:University of Florida 1265:10.1007/s002650050503 807:Sallam, M.N. (2008). 664:Tenebrio bifoveolatus 583:Tribolium ferrugineum 422:inbreeding depression 267: 259:confused flour beetle 235: 1917:Beetles of Australia 1732:Fauna Europaea (new) 1488:10.5962/bhl.part.470 998:Evolutionary Ecology 688:Trogosita ferruginea 672:Tenebrio ferrugineus 328:carries an advantage 303:Potential advantages 1636:Tribolium_castaneum 1622:Tribolium castaneum 1592:Tribolium castaneum 1539:species comparison. 1521:Tribolium castaneum 1465:Tribolium castaneum 1461:Pope, R.D. (1986). 1440:Good, M.E. (1936). 1298:(1699): 3483–3491. 1148:(1546): 1393–1399. 1136:Tribolium castaneum 1095:1985Sci...227.1061B 1089:(4690): 1061–1063. 1038:Tribolium castaneum 992:Tribolium castaneum 950:Tribolium castaneum 898:Tribolium castaneum 847:2017PLoSO..1285386Y 750:10.1007/10_2013_212 680:Tenebrio ochraceous 533:Tribolium castaneum 516:Tribolium castaneum 461:Tribolium castaneum 449:As a model organism 269:Tribolium castaneum 251:Tribolium castaneum 202:Gnatocerus cornutus 189:Tribolium castaneum 148:Tribolium castaneum 1563:Bayer Crop Science 1528:2016-03-01 at the 648:Margus ferrugineus 575:Tenebrio castaneus 543:Colydium castaneum 283:Tribolium confusum 273: 255:Tribolium confusum 238: 204:, are a worldwide 192:) is a species of 1874: 1873: 1859:Open Tree of Life 1584:Taxon identifiers 902:Molecular Ecology 759:978-3-642-39862-9 705: 692: 691:(Fabricius, 1781) 684: 676: 668: 660: 652: 644: 643:(Fabricius, 1775) 636: 628: 620: 616:Dermestes navalis 603: 595: 594:(Fabricius, 1775) 587: 586:, Wollaston, 1854 579: 571: 563: 559:Phaleria castanca 555: 547: 537: 409:genetic diversity 335:Offspring fitness 310:genetic diversity 180: 179: 130:T. castaneum 24:Red flour beetle 16:Species of beetle 1929: 1867: 1866: 1854: 1853: 1841: 1840: 1831: 1830: 1818: 1817: 1815:NBNSYS0000024838 1805: 1804: 1792: 1791: 1779: 1778: 1766: 1765: 1753: 1752: 1740: 1739: 1727: 1726: 1714: 1713: 1701: 1700: 1688: 1687: 1675: 1674: 1662: 1661: 1649: 1648: 1639: 1638: 1626: 1625: 1624: 1611: 1610: 1609: 1579: 1574: 1572: 1571: 1556:Cattlin, Nigel. 1493: 1492: 1490: 1469:Tribolium navale 1458: 1452: 1451: 1437: 1428: 1425: 1419: 1418: 1416: 1415: 1400: 1394: 1391: 1385: 1382: 1373: 1372: 1332: 1326: 1325: 1315: 1283: 1277: 1276: 1248: 1242: 1241: 1231: 1207: 1198: 1195: 1189: 1185: 1176: 1175: 1165: 1129: 1123: 1122: 1078: 1072: 1071: 1065: 1057: 1033: 1022: 1021: 985: 970: 969: 945: 934: 933: 908:(8): 1635–1646. 893: 887: 886: 876: 858: 826: 820: 819: 813: 804: 798: 797: 787: 778: 772: 771: 737: 703: 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Index


Scientific classification
Edit this classification
Eukaryota
Animalia
Arthropoda
Insecta
Coleoptera
Tenebrionidae
Tribolium
Binomial name
Herbst
Synonyms
text
beetle
Tenebrionidae
Gnatocerus cornutus
pest
food grains
model organism
ethological
food safety
Adult
confused flour beetle

Tribolium confusum
polyandrous
genetic diversity
carries an advantage
pheromones

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