Abundance and distribution of the deep-sea crab Chaceon ramosae (Decapoda: Geryonidae) in southern Brazil: contribution to the fishing regulation
ABSTRACT: The deep-sea crab Chaceon ramosae occurs at 350-1200 m depth in the southeast and south of Brazil. Here we evaluated the latitudinal, bathymetric, and seasonal abundance of C. ramosae in southern Brazil obtained during several research cruises. We also obtained populational data to evaluat...
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| Lenguaje: | English |
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Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
2018
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oai:scielo:S0718-560X20180005010912019-04-03Abundance and distribution of the deep-sea crab Chaceon ramosae (Decapoda: Geryonidae) in southern Brazil: contribution to the fishing regulationBoos,HarryAraujo,Paula Beatriz Chaceon ramosae sexual maturity deep-water resources continental slope southern Atlantic ABSTRACT: The deep-sea crab Chaceon ramosae occurs at 350-1200 m depth in the southeast and south of Brazil. Here we evaluated the latitudinal, bathymetric, and seasonal abundance of C. ramosae in southern Brazil obtained during several research cruises. We also obtained populational data to evaluate the effectiveness of the fishing regulations for C. ramosae. Five sampling cruises were carried out in 2009-2010 and the sampling effort comprised 32 fishing hauls with four pots per mainline. In total, 195 individuals were caught, 128 males and 67 females, of which 17 were ovigerous. The highest catch per unit effort occurred between 29°03’ and 29°05’S at 800-1000 m in depth. The highest abundance occurred in winter, and almost all ovigerous females were captured in this season. The size at the onset of sexual maturity was estimated at 120 mm carapace width. Depth was the most critical environmental factor explaining C. ramosae distribution. The largest individuals, as well as the mature ones, were mainly captured in shallower regions (400-600 m). Our results confirm the need for prohibiting the fishing for C. ramosae at depths lesser than 500 m.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.5 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501091en10.3856/vol46-issue5-fulltext-21 |
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Scielo Chile |
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| language |
English |
| topic |
Chaceon ramosae sexual maturity deep-water resources continental slope southern Atlantic |
| spellingShingle |
Chaceon ramosae sexual maturity deep-water resources continental slope southern Atlantic Boos,Harry Araujo,Paula Beatriz Abundance and distribution of the deep-sea crab Chaceon ramosae (Decapoda: Geryonidae) in southern Brazil: contribution to the fishing regulation |
| description |
ABSTRACT: The deep-sea crab Chaceon ramosae occurs at 350-1200 m depth in the southeast and south of Brazil. Here we evaluated the latitudinal, bathymetric, and seasonal abundance of C. ramosae in southern Brazil obtained during several research cruises. We also obtained populational data to evaluate the effectiveness of the fishing regulations for C. ramosae. Five sampling cruises were carried out in 2009-2010 and the sampling effort comprised 32 fishing hauls with four pots per mainline. In total, 195 individuals were caught, 128 males and 67 females, of which 17 were ovigerous. The highest catch per unit effort occurred between 29°03’ and 29°05’S at 800-1000 m in depth. The highest abundance occurred in winter, and almost all ovigerous females were captured in this season. The size at the onset of sexual maturity was estimated at 120 mm carapace width. Depth was the most critical environmental factor explaining C. ramosae distribution. The largest individuals, as well as the mature ones, were mainly captured in shallower regions (400-600 m). Our results confirm the need for prohibiting the fishing for C. ramosae at depths lesser than 500 m. |
| author |
Boos,Harry Araujo,Paula Beatriz |
| author_facet |
Boos,Harry Araujo,Paula Beatriz |
| author_sort |
Boos,Harry |
| title |
Abundance and distribution of the deep-sea crab Chaceon ramosae (Decapoda: Geryonidae) in southern Brazil: contribution to the fishing regulation |
| title_short |
Abundance and distribution of the deep-sea crab Chaceon ramosae (Decapoda: Geryonidae) in southern Brazil: contribution to the fishing regulation |
| title_full |
Abundance and distribution of the deep-sea crab Chaceon ramosae (Decapoda: Geryonidae) in southern Brazil: contribution to the fishing regulation |
| title_fullStr |
Abundance and distribution of the deep-sea crab Chaceon ramosae (Decapoda: Geryonidae) in southern Brazil: contribution to the fishing regulation |
| title_full_unstemmed |
Abundance and distribution of the deep-sea crab Chaceon ramosae (Decapoda: Geryonidae) in southern Brazil: contribution to the fishing regulation |
| title_sort |
abundance and distribution of the deep-sea crab chaceon ramosae (decapoda: geryonidae) in southern brazil: contribution to the fishing regulation |
| publisher |
Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar |
| publishDate |
2018 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000501091 |
| work_keys_str_mv |
AT boosharry abundanceanddistributionofthedeepseacrabchaceonramosaedecapodageryonidaeinsouthernbrazilcontributiontothefishingregulation AT araujopaulabeatriz abundanceanddistributionofthedeepseacrabchaceonramosaedecapodageryonidaeinsouthernbrazilcontributiontothefishingregulation |
| _version_ |
1714205212258861056 |