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other five genera of
Daphniidae (though most wouldn't use the term for anything other than Daphnia, Ceriodaphnia & Simocephalus). Including the sister families (Bosminidae & Moinidae) is widespread, but beyond that the term is inconsistently used, though I think few would take issue with equating "water flea" with "Cladocera." I suspect this is because the saltatory movements are not the sole (or main?) reason for the nickname. When originally described, the rostrum was likened to the sucking mouth parts of fleas, and it was thought that they fed on blood -- in hypoxic waters, most Daphnia produce hemoglobin and easily look engorged with blood. Outside of the Daphnia genus, few Cladocera have all three characteristics: saltation, a pointy rostrum, and hemoglobin production. Don't know about use of the term among aquarists.
560:, which uses the same photo in a discussion of parasitic infections of Daphnia, but the photo appears to be used to illustrate Daphnia in general, not an infected specimen, although its placement in the article looks suspiciously like someone tried to portray it as an example of an infected specimen (which, as I mentioned before, could be right). Google images for "Daphnia parasites" (don't know why I didn't also do that one earlier) shows some images of infected Daphnia.
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Daphnia as a Fish Food, yet this is not a "Popular live foor in tropical and marine fish keeping." Possibly, one can buy frozen
Daphnia, yet most people in the Aquarium hobby buy Frozen Brine Shrimp, and Fish Stores used to sell Live Brine Shrimp when I was young. What is very popular is Flake Fish Food, and Cichlid Pellets, Live Daphnia is not "Popular."
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I have studied with eggs forming in the brood pouch. It would seem very strange for parasites to be exclusively restricted to the brood pouch. It is much more likely that parasites would be distributed more generally within the carapace and even more likely if they were concentrated around the gut or
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to the
Cladocera but many suppliers of live fish-food will continue to use a much wider definition encompassing almost any motile small freshwater arthropod. As with all common names, we probably have to accept what the common usage is, no matter how non-discriminating it may seem. I therefore agree
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10yr in the
Daphnia research community, I've concluded there is no universally accepted boundary to the term "water flea." All would apply "water flea" to any species of the genus Daphnia (none of which individually have common names), and the vast majority wouldn't think twice about including the
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This article mentions the name "Daphnia", without explaining - is "Daphnia" a synonym of "Water flea", or just one type of water flea? If the former, let's create a redirection from "Daphnia" to "Water flea". If the latter, why mention the daphnia specifically, and why not define it when first used
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I have had aquariums as a hobby for over 50 years. In all that time period I have never seen
Daphnia as live food being sold at an Aquarium or Pet Store. I do know that one can go online and buy some for their own culture, and I know that William Innes book, (last edition 1966), talks about live
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Daphnia is the name of the genus. Some species of
Daphnia sufficiently well-known might be given the less "alien" name. Another example is Felis Leo being called a lion. Such names can be expected to be inaccurate from a taxonomical perspective. An antlion bears no significant relation to either
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little study is done on the crustaceans although they have the same number of known species as us vertebrates, they are sequencing this guys genome which is uber important for crustaceans, but it is not mentioned, whereas it should be written even on the crustacean page...
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have the caption "Adult
Daphnia magna with eggs", and doing an google image search for "daphnia eggs" turns up several similar images all referencing "Daphnia with eggs". Nothing that I could find about spores of a protozoan parasite. In addition,
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I stumble on this sentence in the text: "The original
Daphnia is thought to be a mutation of the human embryo from the pressures discussed above." If this is vandalism it should be deleted. If it is science it needs a damn good explanation.
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From what I have heard in a lecture of the course "Evolution- BIOL-304-001" taught by the
University of McGill, that is not a picture of a Daphnia with eggs, but a picture of Daphnia that is infected by spores (?) of a protozoan
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The
Linnaean classifications are provided. While the year of discovery is disputed because of their long history of research. This article provides an adequate and useful description of Daphnia that is frequently
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To the surprise of scientists, many environmentally induced changes turn out to be heritable. When exposed to predators, Daphnia water fleas grow defensive spines. The effect can last for several generations.
856:"Daphnia spp. are a popular live food in tropical and marine fish keeping. They are often fed to tadpoles or small species of amphibians such as the African dwarf frog (Hymenochirus boettgeri)."
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Fortunately or unfortunately, it is not the research community that asign common names to animals or groups of animals. I personally would be happy to reserve the name
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animal, members of the genus Felis are often referred to as cats, but it's unusual to speak of a tiger as a cat. Nor is a wolf, Canis Lupus, frequently called a dog.
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for my single goldfish from the market in Birmingham (UK). I guess if there are no RSs for the continued existence of this trade, the text should be removed.
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I guess it may depend on where you live. It may also be something that is now in the past. As a child in the 1950s, I used to buy plastic bags of
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disambig page that was incomplete - now corrected. although I do agree that this is not the best way of linking this
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You may be right, but the source for the image, The US Geological Survey Upper Midwest Environmental Sciences Center
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Is that a Linnean species? no information of the one who discovered is provided here, nor the year of discovery.
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is another article discussing parasites of Daphnia, but I haven't crawled through it in great detail.
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Still, I believe it would be perfectly alright to refer to any member of Daphnia as a "water flea".
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What is with that string of nonsensical characters...? Cream10152 01:06, 1 May 2008 (UTC)
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suggests that parasitic spores of Daphnia are much smaller in size than in this picture.
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For what it is worth, the image, even of such a small size, looks identical to
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around the feeding appendages depending on the specie of parasite involved.
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https://web.archive.org/web/20050124131431/http://daphnia.cgb.indiana.edu/
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which suggests that the trade is alive and well, at least in the UK.
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a synonym for "Water Flea" and neither is "Water flea" a synonym for
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https://web.archive.org/web/20070928142228/http://www.waterflea.org/
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Looking at the page, at the info box specifically, I found this:
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It seems to me "saltatory" should not be linked to "Saltation".
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for additional information. I made the following changes:
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for additional information. I made the following changes:
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A popular live food in tropical and marine fish keeping?
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genus a "water flea" but not all "water fleas" are
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