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Effect of physical disturbance on reproductive performance in the spiny lobster, Jasus edwardsii


Smith, GG and Ritar, AJ, Effect of physical disturbance on reproductive performance in the spiny lobster, Jasus edwardsii, New Zealand Journal of Marine and Freshwater Research, 39, (2) pp. 317-324. ISSN 0028-8330 (2005) [Refereed Article]

DOI: doi:10.1080/00288330.2005.9517312


A study was conducted to examine the effects of physical disturbance on Jasus edwardsii spiny lobster broodstock during ovarian recrudescence through to larval hatch. Undisturbed broodstock were held in relative isolation and subjected to minimal human disturbance, which contrasted with weekly air exposure and handling of the disturbed animals. Broodstock behavioural response, phyllosoma number, competency, and survival in culture were examined. A higher proportion of broodstock from the undisturbed treatment were active during daylight hours compared with those in the disturbed treatment. All ovigerous females in the undisturbed group produced phyllosoma larvae compared with 72.7% of animals in the disturbed treatment. Individual undisturbed females produced greater numbers of phyllosoma larvae, which in turn performed better in larval competency tests, were larger at hatch, and survived better in culture than those from disturbed females. This study demonstrated that physical disturbance altered reproductive performance and larval competency of J. edwardsii. Protocols are suggested to minimise disturbance associated with handling in crustacean broodstock. © The Royal Society of New Zealand 2005.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Fisheries - aquaculture not elsewhere classified
UTAS Author:Smith, GG (Professor Gregory Smith)
UTAS Author:Ritar, AJ (Associate Professor Arthur Ritar)
ID Code:37715
Year Published:2005
Web of Science® Times Cited:9
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2005-08-01
Last Modified:2006-04-10

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