Survival of laboratory-reared juvenile European lobster (Homarus gammarus) from three brood sources in southwestern Norway

Experiments were carried out from June 2000 to April 2001 to compare survival of European lobster (Homarus gammarus) offspring (larvae and juveniles) from three brood sources, Kvitsøy Wild (KW), Kvitsøy Cultured (KC), and Rogaland Wild (RW), Norway. In the first set of experiments, newly hatched lar...

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Bibliographic Details
Published in:New Zealand Journal of Marine and Freshwater Research
Main Authors: Jørstad, K.E., Kristiansen, T.S., Farestveit, E., Agnalt, A.-L., Prodöhl, P.A., Hughes, Maria, Ferguson, Andrew
Format: Article in Journal/Newspaper
Language:English
Published: 2009
Subjects:
/dk/atira/pure/subjectarea/asjc/1100/1104
name=Aquatic Science
/dk/atira/pure/subjectarea/asjc/2300/2312
name=Water Science and Technology
/dk/atira/pure/subjectarea/asjc/2300/2303
name=Ecology
/dk/atira/pure/subjectarea/asjc/1100/1105
Evolution
Behavior and Systematics
European lobster
Homarus gammarus
Online Access:https://pure.qub.ac.uk/en/publications/8abeac8f-15e3-4543-a397-5db12b0605a2
https://doi.org/10.1080/00288330909509982
Description
Summary:Experiments were carried out from June 2000 to April 2001 to compare survival of European lobster (Homarus gammarus) offspring (larvae and juveniles) from three brood sources, Kvitsøy Wild (KW), Kvitsøy Cultured (KC), and Rogaland Wild (RW), Norway. In the first set of experiments, newly hatched larvae (stage I) were raised in separate family tanks. All larvae groups survived to stage III/IV, although large variation in relative survival was observed among families within each of the three different female groups. Highest overall survival was observed for the RW group (12.8%), whereas no differences in overall survival were found between the KW (9.0%) and KC groups (9.6%). From stage III/IV, larvae from single family tank experiments were mixed in five “common garden” juvenile experiments. These lasted for 9 months, and the surviving juveniles were identified to family/female group using microsatellite DNA profiling. Significantly higher survival of the KW families (7.0%) was found compared with the KC (3.7%) and the RW families (3.2%), and differences in family ranking of relative survival values were evident between the KW and KC groups. The relative survival rate of the different groups was independent of female lobster size. An estimate based on only stage IV larvae reduced the difference in survival between the KW (11.4%) and KC (8.3%) group. The experiments provided evidence that cultured females (KC) are producing viable offspring with lower, but comparable survival to that of offspring from wild females (KW).

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