Effect of hunger on the response to, and the production of, chemical alarm cues in a coral reef fish
McCormick, Mark I., and Larson, Johan K. (2008) Effect of hunger on the response to, and the production of, chemical alarm cues in a coral reef fish. Animal Behaviour, 75 (6). pp. 1973-1980.
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A wide variety of fish species release chemical alarm cues upon mechanical damage to their skin by predator attack. We investigated the effects of short-term food deprivation on the response to, and the production of, chemical alarm cues in the coral reef-dwelling goby Asterropteryx semipunctatus (family Gobiidae). Gobies deprived of food for 4 days did not react with fright when exposed to conspecific skin extracts. However, when the same individuals had been fed ad libitum, they responded with a typical alarm reaction to the skin extracts, including decreased movement and feeding. In a second experiment, gobies were exposed to skin extracts from conspecifics that had been food deprived and from conspecifics fed ad libitum. Damaged skin from food-deprived individuals did not elicit an alarm response in conspecifics, whereas skin from individuals that had been fed ad libitum yielded a typical alarm response. Histological sections of goby skin showed that food-deprived gobies had fewer sacciform cells in their epidermis than did gobies fed ad libitum. Evidence suggests that there may be a trade-off between foraging and antipredator behaviour, and also between the benefits derived from maintaining chemical alarm cue cells and the cost of producing them in A. semipunctatus.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||OIRS; AFDC; alarm cue; Asterropteryx semipunctatus; chemical stimulus; foraging; goby; predator avoidance; marine sciences|
|FoR Codes:||06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%|
|SEO Codes:||96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 100%|
|Deposited On:||17 Dec 2009 10:50|
|Last Modified:||18 Oct 2013 00:43|
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