The effects of size, reproductive condition, and parasitism on foraging behaviour in a freshwater snail, Potamopyrgus antipodarum
Article Abstract:
The size, reproductive status, and parasitic infection affect the foraging behavior of the freshwater snail, Potamopyrgus antipodarum. Small, uninfected snails forage more during daylight when predation risk is the highest. Non-brooding females forage more during daylight than do the brooding females. Snails infected by encysted transmissible larvae forage early in the morning, while those infected by unencysted non-transmissible larvae retreat under rocks in the later hours. While snails are the intermediate hosts for the parasite, ducks which forage in the early hours are the final hosts.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
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Trait compensation and cospecialization in a freshwater snail: size, shape and antipredator behaviour
Article Abstract:
Most prey animals adapt their antipredator behaviour in the presence of predators and may reduce their activity or increase their use of refuge. Different prey behaviours often reflect concealed connections with other traits linked to energy reserves or vulnerability. A new study investigates the behavioural responses of the freshwater snail Physa gyrina to a common, natural predator, the crayfish. Results show that smaller, more vulnerable prey tended to show stronger antipredator behaviour than larger prey.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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Food choice behaviour may promote habitat specifity in mixed populations of clonal and sexual Potamopyrgus antipodarum
Article Abstract:
Food choice in a type of snail, Potamopyrgus antipodarum, is linked to the snail's habitat, which makes it less likely to migrate to where unfamiliar food is found.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2000
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