Reproductive potential of the lithodids Lithodes santolla and Paralomis granulosa (Anomura, Decapoda) in the Beagle Channel, Argentina
Lithodidae is the only group of reptant decapods that occurs in Antarctic waters and has been particularly abundant in the Beagle Channel, Straits of Magellan and south to 50º S. Because of their abundance in coastal waters, the sympatric Lithodes santolla and Paralomis granulosa have constituted a...
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Consejo Superior de Investigaciones Científicas
1999
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ftdoajarticles:oai:doaj.org/article:32cf86b2c46045b8b7c0e539b3f317ea 2023-05-15T13:52:52+02:00 Reproductive potential of the lithodids Lithodes santolla and Paralomis granulosa (Anomura, Decapoda) in the Beagle Channel, Argentina Gustavo A. Lovrich Julio H. Vinuesa 1999-12-01T00:00:00Z https://doi.org/10.3989/scimar.1999.63s1355 https://doaj.org/article/32cf86b2c46045b8b7c0e539b3f317ea EN eng Consejo Superior de Investigaciones Científicas http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/922 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.1999.63s1355 https://doaj.org/article/32cf86b2c46045b8b7c0e539b3f317ea Scientia Marina, Vol 63, Iss S1, Pp 355-360 (1999) crab fecundity growth life history traits southwestern atlantic southeastern pacific tierra del fuego Aquaculture. Fisheries. Angling SH1-691 article 1999 ftdoajarticles https://doi.org/10.3989/scimar.1999.63s1355 2022-12-31T10:54:53Z Lithodidae is the only group of reptant decapods that occurs in Antarctic waters and has been particularly abundant in the Beagle Channel, Straits of Magellan and south to 50º S. Because of their abundance in coastal waters, the sympatric Lithodes santolla and Paralomis granulosa have constituted a mixed fishery since the 1930s. The two species differ markedly in their reproductive potential. Lithodes santolla is large (maximum size of 190 mm carapace length, CL, and 8 kg weight), has a generation time of 6 yrs., the reproductive cycle is annual and females carry between 5,000-60,000 eggs per female per clutch. In their life span, L. santolla females produce 6 times more eggs than P. granulosa females. Paralomis granulosa is smaller than its relative (maximum 115 mm CL and 1.5 kg weight), and has a slower growth rate, resulting in a generation time of 12 yrs. The reproductive cycle is biennial and females carry between 800-10,000 eggs per female per clutch. Moreover, the reproductive potential of P. granulosa is reduced because an important proportion of the largest and more prolific females of the population do not carry eggs. In other terms, in one generation time of P. granulosa, two complete generations of L. santolla are produced, and compared to other Subantarctic lithodids L. santolla is the most prolific species. The higher reproductive potential of L. santolla probably confers to this species the ability to recover more rapidly from an overfishing situation. Article in Journal/Newspaper Antarc* Antarctic Tierra del Fuego Directory of Open Access Journals: DOAJ Articles Antarctic Pacific Argentina Scientia Marina 63 S1 355 360 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
crab fecundity growth life history traits southwestern atlantic southeastern pacific tierra del fuego Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
crab fecundity growth life history traits southwestern atlantic southeastern pacific tierra del fuego Aquaculture. Fisheries. Angling SH1-691 Gustavo A. Lovrich Julio H. Vinuesa Reproductive potential of the lithodids Lithodes santolla and Paralomis granulosa (Anomura, Decapoda) in the Beagle Channel, Argentina |
topic_facet |
crab fecundity growth life history traits southwestern atlantic southeastern pacific tierra del fuego Aquaculture. Fisheries. Angling SH1-691 |
description |
Lithodidae is the only group of reptant decapods that occurs in Antarctic waters and has been particularly abundant in the Beagle Channel, Straits of Magellan and south to 50º S. Because of their abundance in coastal waters, the sympatric Lithodes santolla and Paralomis granulosa have constituted a mixed fishery since the 1930s. The two species differ markedly in their reproductive potential. Lithodes santolla is large (maximum size of 190 mm carapace length, CL, and 8 kg weight), has a generation time of 6 yrs., the reproductive cycle is annual and females carry between 5,000-60,000 eggs per female per clutch. In their life span, L. santolla females produce 6 times more eggs than P. granulosa females. Paralomis granulosa is smaller than its relative (maximum 115 mm CL and 1.5 kg weight), and has a slower growth rate, resulting in a generation time of 12 yrs. The reproductive cycle is biennial and females carry between 800-10,000 eggs per female per clutch. Moreover, the reproductive potential of P. granulosa is reduced because an important proportion of the largest and more prolific females of the population do not carry eggs. In other terms, in one generation time of P. granulosa, two complete generations of L. santolla are produced, and compared to other Subantarctic lithodids L. santolla is the most prolific species. The higher reproductive potential of L. santolla probably confers to this species the ability to recover more rapidly from an overfishing situation. |
format |
Article in Journal/Newspaper |
author |
Gustavo A. Lovrich Julio H. Vinuesa |
author_facet |
Gustavo A. Lovrich Julio H. Vinuesa |
author_sort |
Gustavo A. Lovrich |
title |
Reproductive potential of the lithodids Lithodes santolla and Paralomis granulosa (Anomura, Decapoda) in the Beagle Channel, Argentina |
title_short |
Reproductive potential of the lithodids Lithodes santolla and Paralomis granulosa (Anomura, Decapoda) in the Beagle Channel, Argentina |
title_full |
Reproductive potential of the lithodids Lithodes santolla and Paralomis granulosa (Anomura, Decapoda) in the Beagle Channel, Argentina |
title_fullStr |
Reproductive potential of the lithodids Lithodes santolla and Paralomis granulosa (Anomura, Decapoda) in the Beagle Channel, Argentina |
title_full_unstemmed |
Reproductive potential of the lithodids Lithodes santolla and Paralomis granulosa (Anomura, Decapoda) in the Beagle Channel, Argentina |
title_sort |
reproductive potential of the lithodids lithodes santolla and paralomis granulosa (anomura, decapoda) in the beagle channel, argentina |
publisher |
Consejo Superior de Investigaciones Científicas |
publishDate |
1999 |
url |
https://doi.org/10.3989/scimar.1999.63s1355 https://doaj.org/article/32cf86b2c46045b8b7c0e539b3f317ea |
geographic |
Antarctic Pacific Argentina |
geographic_facet |
Antarctic Pacific Argentina |
genre |
Antarc* Antarctic Tierra del Fuego |
genre_facet |
Antarc* Antarctic Tierra del Fuego |
op_source |
Scientia Marina, Vol 63, Iss S1, Pp 355-360 (1999) |
op_relation |
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/922 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.1999.63s1355 https://doaj.org/article/32cf86b2c46045b8b7c0e539b3f317ea |
op_doi |
https://doi.org/10.3989/scimar.1999.63s1355 |
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Scientia Marina |
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63 |
container_issue |
S1 |
container_start_page |
355 |
op_container_end_page |
360 |
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1766257617828577280 |