Going with the flow: hydrodynamic cues trigger directed escapes from a stalking predator
Going with the flow: hydrodynamic cues trigger directed escapes from a stalking predator
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随波逐流:水动力线索触发逃离跟踪捕食者
DOI:
10.1098/rsif.2018.0776
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发表时间:
2019
影响因子:
3.9
通讯作者:
Hartline, Daniel K.
中科院分区:
文献类型:
--
作者:
Tuttle, Lillian J.;Robinson, H. Eve;Takagi, Daisuke;Strickler, J. Rudi;Lenz, Petra H.;Hartline, Daniel K.
In the coevolution of predator and prey, different and less well-understood rules for threat assessment apply to freely suspended organisms than to substrate-dwelling ones. Particularly vulnerable are small prey carried with the bulk movement of a surrounding fluid and thus deprived of sensory information within the bow waves of approaching predators. Some planktonic prey have solved this apparent problem, however. We quantified cues generated by the slow approach of larval clownfish (Amphiprion ocellaris) that triggered a calanoid copepod (Bestiolina similis) to escape before the fish could strike. To estimate water deformation around the copepod immediately preceding its jump, we represented the body of the fish as a rigid sphere in a hydrodynamic model that we parametrized with measurements of fish size, approach speed and distance to the copepod. Copepods of various developmental stages (CII–CVI) were sensitive to the water flow caused by the live predator, at deformation rates as low as 0.04 s−1. This rate is far lower than that predicted from experiments that used artificial predator-mimics. Additionally, copepods localized the source, with 87% of escapes directed away (greater than or equal to 90°) from the predator. Thus, copepods' survival in life-threatening situations relied on their detection of small nonlinear signals within an environment of locally linear deformation.
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DOI:
--
发表时间:
2021
期刊:
Zooplankton: sensory ecology and physiology
影响因子:
--
作者:
D. Fields;J. Yen
通讯作者:
J. Yen
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
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DOI:
--
发表时间:
2000
期刊:
Journal of Comparative Physiology
影响因子:
--
作者:
Petra H. Lenz;D. Hartline;A. Davis
通讯作者:
A. Davis
影响因子:
1.4
作者:
M. L. Wittenrich;R. Turingan
通讯作者:
R. Turingan
DOI:
--
发表时间:
2006
期刊:
影响因子:
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作者:
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通讯作者:
E. Buskey