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Effect of size on reproductive output of giant crabs Pseudocarcinus gigas (Lamarck): Oziidae


Gardner, C, Effect of size on reproductive output of giant crabs Pseudocarcinus gigas (Lamarck): Oziidae, Marine and Freshwater Research, 48, (7) pp. 581-587. ISSN 1323-1650 (1997) [Refereed Article]

DOI: doi:10.1071/MF97023


Fecundity and egg size of giant crabs (Pseudocarcinus gigas) were determined from egg masses of 162 crabs sampled from three sites in south-eastern Australia: western Victoria, western Tasmania and eastern Tasmania. Crabs ranged in carapace length from 126 to 220 mm and egg number ranged from 830000 to 2500000. Egg number and egg size increased with size of female. There appeared to be a decline in number of eggs and size of eggs with successive broods produced between moults. Sampling locality appeared to have little effect on reproductive output. Regression of an allometric model of log egg number to log crab size had a slope of 1.76 which was significantly less than 3.0. This indicates there is not a simple volumetric relationship between the variables, which would tend to occur if increasing fecundity with female size was a simple function of increased body space available for ovarian development. This pattern appeared to be a function of decreasing egg number and size with successive broods, and the trend of increasing egg size with female size.

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:Gardner, C (Professor Caleb Gardner)
ID Code:12039
Year Published:1997
Web of Science® Times Cited:23
Deposited By:TAFI - Aquaculture
Deposited On:1997-08-01
Last Modified:2011-08-15

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