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Anti-predator behavior of captive-reared and wild juvenile spiny lobster (Jasus edwardsii)


Oliver, MD and MacDiarmid, AB and Stewart, RA and Gardner, C, Anti-predator behavior of captive-reared and wild juvenile spiny lobster (Jasus edwardsii), Reviews in Fisheries Science, 16, (40238) pp. 186-194. ISSN 1064-1262 (2008) [Refereed Article]

DOI: doi:10.1080/10641260701727301


Early juvenile lobsters reared in captivity may loose anti-predator behaviors displayed by their wild counterparts. To test this hypothesis in juvenile spiny lobsters (Jasus edwardsii), we conducted a series of experiments in which recently settled pueruli were reared in captivity under differing levels of predation risk. After one year in captivity, these lobsters were exposed to a predator in a tank or released into the wild to assess their ability to recognize and respond to predation. We found that lobsters raised without predators significantly reduced their movement activity outside shelters when subsequently introduced to a predator compared with juveniles raised with predators (F1,45 = 4.33, p < 0.05). This apparent over-compensation may be necessary for lobsters to learn the appropriate anti-predator response. Lobsters raised without predators and released into the wild displayed the same types of behaviors as resident wild lobsters. Released lobsters spent more time defending and fighting amongst themselves than the wild lobsters (G = 13.006 > χ20.05,2 = 9.488), but they displayed the appropriate anti-predator responses when approached or attacked by a predator. Our results show that juvenile spiny lobsters habituate to the absence of a predator when reared in captivity for long periods, but display an innate ability to recognize and effectively respond to predators when encountered in a hatchery environment or in the wild.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture and fisheries stock assessment
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Fisheries - wild caught not elsewhere classified
UTAS Author:Oliver, MD (Ms Megan Oliver)
UTAS Author:Gardner, C (Professor Caleb Gardner)
ID Code:50921
Year Published:2008
Web of Science® Times Cited:14
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2008-03-28
Last Modified:2014-11-24

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