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| Mohammed,Ryan Simon; van Oosterhout,Cock; Schelkle,Bettina; Cable,Joanne; McMullan,Mark. |
| Guppies (Poecilia reticulata Peters 1859) in lakes and from captive-bred populations are predicted to show little rheotaxis compared to conspecifics in a stream environment that are regularly exposed to flash floods associated with involuntary downstream migration. Here we test this hypothesis using an artificial stream, examining guppies of two wild riverine populations, one lake population, and one ornamental strain. Guppies from the most upstream riverine habitat show the most pronounced rheotaxis and are less likely to be swept downstream during flooding events. However, there is no significant difference between guppies from the lowland riverine habitat, the Pitch Lake and ornamental strain. We propose that station-keeping behaviours are most strongly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Guppy/Poecilia reticulata; Rheotaxis; Swimming behaviour; Migration; Natural selection. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000300006 |
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