Reproductive Ecology, Fecundity, and Elemental Composition of Eggs in Brown Crab Cancer pagurus in The Isle of Man


Contact
gabriela.torres [ at ] awi.de

Abstract

The brown crab is an important fishery resource in northern Europe. Understanding factors that affect fecundity in this species is complicated by the fact that ovigerous females enter traps infrequently. This study aimed to understand factors that affect brown crab fecundity and egg quality for crabs sampled from the waters around the Isle of Man. The size-fecundity relationship for the Isle of Man matched closely with those published for other geographical areas where a fishery exists for this species. Ovigerous crabs varied in size from 134 to 215 mm carapace width and each individual carried an estimated 0.4–3.0 million eggs. Fecundity was not affected by factors such as sampling season, location, loss of chelae, or black spot disease. Egg volume was independent of the number of eggs per batch or female body size. Egg volume was reduced significantly in crabs that had lost chelae. Egg dry weight, C and N composition did not vary with body size or any other explanatory factors such as chelal loss or the occurrence of black spot disease. Although the importance of the effect of claw loss on egg volume remains unclear, it may be an important consideration in fisheries in which the landing of claws is permitted.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
ISI/Scopus peer-reviewed
Publication Status
Published
Eprint ID
43099
DOI 10.2983/035.035.0226

Cite as
Öndes, F. , Kaiser, M. J. , Murray, L. G. and Torres, G. (2016): Reproductive Ecology, Fecundity, and Elemental Composition of Eggs in Brown Crab Cancer pagurus in The Isle of Man , Journal of Shellfish Research, 35 (2), pp. 539-547 . doi: 10.2983/035.035.0226


Share


Citation

Research Platforms
N/A

Campaigns


Actions
Edit Item Edit Item