Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus
In many marine species, large females tend to produce more robust offspring than small females. However, knowledge on maternal influences in decapod crustaceans is limited. This is unfortunate since many decapod populations are being intensively harvested and show signs of ‘juvenescence’, i.e. the l...
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ftimr:oai:imr.brage.unit.no:11250/109116 2023-05-15T16:08:47+02:00 Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus Moland, Even Olsen, Esben Moland Stenseth, Nils Christian 2010-02-11 application/pdf http://hdl.handle.net/11250/109116 https://doi.org/10.3354/meps08397 eng eng Inter-Research urn:issn:0171-8630 urn:issn:1616-1599 http://hdl.handle.net/11250/109116 http://dx.doi.org/10.3354/meps08397 165-173 400 Marine Ecology Progress Series lobster hummer egg quality eggkvalitet survival overlevelse VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 Working paper 2010 ftimr https://doi.org/10.3354/meps08397 2021-09-23T20:14:34Z In many marine species, large females tend to produce more robust offspring than small females. However, knowledge on maternal influences in decapod crustaceans is limited. This is unfortunate since many decapod populations are being intensively harvested and show signs of ‘juvenescence’, i.e. the loss of large (and presumably old) individuals. In this study, we quantified maternal influences in European lobster Homarus gammarus from Skagerrak, southern Norway. Historical lobster catches in Skagerrak were substantial but the stock has suffered a major decline over the past 30 to 40 yr and is currently red listed as near threatened according to the IUCN (International Union for Conservation of Nature) criteria. We studied eggs and larvae from wild-caught ovigerous females ranging in carapace length from 79 to 152 mm (n = 45). Mean egg size increased while sibling size variation decreased significantly with increasing maternal size. Mean larval size at hatching was closely linked to both maternal size and mean egg size. A laboratory experiment showed a weak but significant nonlinear increase in pelagic larval survival with increasing mean egg size in the absence of food. These findings suggest that maternal influences on offspring quality could be a significant source of variation in lobster recruitment. Consequently, maternal influences could be an important source of error in fisheries science and management if they are assumed to be absent or unimportant. 2015-02-11 Report European lobster Homarus gammarus Institute for Marine Research: Brage IMR Hummer ENVELOPE(-50.100,-50.100,-83.283,-83.283) Norway Marine Ecology Progress Series 400 165 173 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
lobster hummer egg quality eggkvalitet survival overlevelse VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 |
spellingShingle |
lobster hummer egg quality eggkvalitet survival overlevelse VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 Moland, Even Olsen, Esben Moland Stenseth, Nils Christian Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus |
topic_facet |
lobster hummer egg quality eggkvalitet survival overlevelse VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 |
description |
In many marine species, large females tend to produce more robust offspring than small females. However, knowledge on maternal influences in decapod crustaceans is limited. This is unfortunate since many decapod populations are being intensively harvested and show signs of ‘juvenescence’, i.e. the loss of large (and presumably old) individuals. In this study, we quantified maternal influences in European lobster Homarus gammarus from Skagerrak, southern Norway. Historical lobster catches in Skagerrak were substantial but the stock has suffered a major decline over the past 30 to 40 yr and is currently red listed as near threatened according to the IUCN (International Union for Conservation of Nature) criteria. We studied eggs and larvae from wild-caught ovigerous females ranging in carapace length from 79 to 152 mm (n = 45). Mean egg size increased while sibling size variation decreased significantly with increasing maternal size. Mean larval size at hatching was closely linked to both maternal size and mean egg size. A laboratory experiment showed a weak but significant nonlinear increase in pelagic larval survival with increasing mean egg size in the absence of food. These findings suggest that maternal influences on offspring quality could be a significant source of variation in lobster recruitment. Consequently, maternal influences could be an important source of error in fisheries science and management if they are assumed to be absent or unimportant. 2015-02-11 |
format |
Report |
author |
Moland, Even Olsen, Esben Moland Stenseth, Nils Christian |
author_facet |
Moland, Even Olsen, Esben Moland Stenseth, Nils Christian |
author_sort |
Moland, Even |
title |
Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus |
title_short |
Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus |
title_full |
Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus |
title_fullStr |
Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus |
title_full_unstemmed |
Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus |
title_sort |
maternal influences on offspring size variation and viability in wild european lobster homarus gammarus |
publisher |
Inter-Research |
publishDate |
2010 |
url |
http://hdl.handle.net/11250/109116 https://doi.org/10.3354/meps08397 |
long_lat |
ENVELOPE(-50.100,-50.100,-83.283,-83.283) |
geographic |
Hummer Norway |
geographic_facet |
Hummer Norway |
genre |
European lobster Homarus gammarus |
genre_facet |
European lobster Homarus gammarus |
op_source |
165-173 400 Marine Ecology Progress Series |
op_relation |
urn:issn:0171-8630 urn:issn:1616-1599 http://hdl.handle.net/11250/109116 http://dx.doi.org/10.3354/meps08397 |
op_doi |
https://doi.org/10.3354/meps08397 |
container_title |
Marine Ecology Progress Series |
container_volume |
400 |
container_start_page |
165 |
op_container_end_page |
173 |
_version_ |
1766404801908703232 |