Investigating fecundity and egg loss using a non-invasive method during brooding in European lobster (Homarus gammarus)
Abstract This article examines two important components of measurement of fecundity in the European lobster Homarus gammarus: (i) comparing the traditional gravimetric dry weight fecundity method against two non-invasive depth gauge methods initially developed for Homarus americanus and (ii) utilizi...
Published in: | ICES Journal of Marine Science |
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Oxford University Press (OUP)
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsz055 http://academic.oup.com/icesjms/article-pdf/76/6/1871/31247049/fsz055.pdf |
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croxfordunivpr:10.1093/icesjms/fsz055 2024-06-23T07:52:35+00:00 Investigating fecundity and egg loss using a non-invasive method during brooding in European lobster (Homarus gammarus) Coleman, Matthew T Porter, Joanne S Bell, Michael C Fields, David 2019 http://dx.doi.org/10.1093/icesjms/fsz055 http://academic.oup.com/icesjms/article-pdf/76/6/1871/31247049/fsz055.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 76, issue 6, page 1871-1881 ISSN 1054-3139 1095-9289 journal-article 2019 croxfordunivpr https://doi.org/10.1093/icesjms/fsz055 2024-06-04T06:11:29Z Abstract This article examines two important components of measurement of fecundity in the European lobster Homarus gammarus: (i) comparing the traditional gravimetric dry weight fecundity method against two non-invasive depth gauge methods initially developed for Homarus americanus and (ii) utilizing the depth gauge method to determine egg loss during the brooding period and its impacts on effective fecundity estimates. No significant difference was observed between fecundity estimates derived using either the traditional or depth gauge methods. Derived fecundity estimates from the two depth gauge methods differed by −0.31% (±2.7 s.e.) for cylinder and −1.1% (±2.4 s.e.) for ellipsoid fecundity estimates compared with the traditional method. This highlights the utility of the depth gauge method for providing fast, reliable and low-cost estimates without sacrificing lobsters or their egg masses. Egg loss is estimated to be as high as 44% from initial extrusion to hatching. The application of the non-invasive methods for estimating fecundity to other fisheries and stocks is discussed along with the importance of understanding egg loss in this commercially valuable fishery. Article in Journal/Newspaper European lobster Homarus gammarus Oxford University Press ICES Journal of Marine Science 76 6 1871 1881 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
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English |
description |
Abstract This article examines two important components of measurement of fecundity in the European lobster Homarus gammarus: (i) comparing the traditional gravimetric dry weight fecundity method against two non-invasive depth gauge methods initially developed for Homarus americanus and (ii) utilizing the depth gauge method to determine egg loss during the brooding period and its impacts on effective fecundity estimates. No significant difference was observed between fecundity estimates derived using either the traditional or depth gauge methods. Derived fecundity estimates from the two depth gauge methods differed by −0.31% (±2.7 s.e.) for cylinder and −1.1% (±2.4 s.e.) for ellipsoid fecundity estimates compared with the traditional method. This highlights the utility of the depth gauge method for providing fast, reliable and low-cost estimates without sacrificing lobsters or their egg masses. Egg loss is estimated to be as high as 44% from initial extrusion to hatching. The application of the non-invasive methods for estimating fecundity to other fisheries and stocks is discussed along with the importance of understanding egg loss in this commercially valuable fishery. |
author2 |
Fields, David |
format |
Article in Journal/Newspaper |
author |
Coleman, Matthew T Porter, Joanne S Bell, Michael C |
spellingShingle |
Coleman, Matthew T Porter, Joanne S Bell, Michael C Investigating fecundity and egg loss using a non-invasive method during brooding in European lobster (Homarus gammarus) |
author_facet |
Coleman, Matthew T Porter, Joanne S Bell, Michael C |
author_sort |
Coleman, Matthew T |
title |
Investigating fecundity and egg loss using a non-invasive method during brooding in European lobster (Homarus gammarus) |
title_short |
Investigating fecundity and egg loss using a non-invasive method during brooding in European lobster (Homarus gammarus) |
title_full |
Investigating fecundity and egg loss using a non-invasive method during brooding in European lobster (Homarus gammarus) |
title_fullStr |
Investigating fecundity and egg loss using a non-invasive method during brooding in European lobster (Homarus gammarus) |
title_full_unstemmed |
Investigating fecundity and egg loss using a non-invasive method during brooding in European lobster (Homarus gammarus) |
title_sort |
investigating fecundity and egg loss using a non-invasive method during brooding in european lobster (homarus gammarus) |
publisher |
Oxford University Press (OUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1093/icesjms/fsz055 http://academic.oup.com/icesjms/article-pdf/76/6/1871/31247049/fsz055.pdf |
genre |
European lobster Homarus gammarus |
genre_facet |
European lobster Homarus gammarus |
op_source |
ICES Journal of Marine Science volume 76, issue 6, page 1871-1881 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsz055 |
container_title |
ICES Journal of Marine Science |
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76 |
container_issue |
6 |
container_start_page |
1871 |
op_container_end_page |
1881 |
_version_ |
1802643926853615616 |