Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, Mexico

ABSTRACT The brown sea cucumber Isostichopus fuscus is the most important commercial holothurian in the eastern Pacific, and its high market value caused overfishing and sharp declines of its populations and catches in several Latin American countries. In Mexico, the fishery has been intense in the...

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Autores principales:	Reyes-Bonilla,Héctor, Calderón-Aguilera,Luis E., Galaviz-López,Juan Manuel, Herrero-Pérezrul,María Dinorah
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	holothurian size weight-length relative condition index marine protected area Baja California
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000400831
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spelling	oai:scielo:S0718-560X20180004008312018-11-06Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, MexicoReyes-Bonilla,HéctorCalderón-Aguilera,Luis E.Galaviz-López,Juan ManuelHerrero-Pérezrul,María Dinorah holothurian size weight-length relative condition index marine protected area Baja California ABSTRACT The brown sea cucumber Isostichopus fuscus is the most important commercial holothurian in the eastern Pacific, and its high market value caused overfishing and sharp declines of its populations and catches in several Latin American countries. In Mexico, the fishery has been intense in the northern Gulf of California since the 1990s, and it is currently under strong regulation. To evaluate the current status of the organisms, we measured the size, weight and estimated the relative condition index (Kn) of 702 specimens sampled in 86 rocky reefs of that region in 2016, at depths from 3 to 22 m. Mean length ± SD was 22.32 ± 5.23 cm, lower than average in the northern Gulf, but nevertheless, the average weight was 420.61 ± 192.48 g, among the highest recorded in the eastern Pacific; this is presumably due to the high primary production of the region that favors the presence of well-nourished organisms. The weight (W)-length (L) relationship was W = 3.27 L1.56, and condition index ranged from 0.045 to 2.13 (mean Kn = 0.96 ± 0.29), a figure that did not differ to that reported along the Mexican Pacific. There were differences in the value of Kn among sites, being higher in areas that are subject to the low fishing effort.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.4 20182018-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000400831en10.3856/vol46-issue4-fulltext-21
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	holothurian size weight-length relative condition index marine protected area Baja California
spellingShingle	holothurian size weight-length relative condition index marine protected area Baja California Reyes-Bonilla,Héctor Calderón-Aguilera,Luis E. Galaviz-López,Juan Manuel Herrero-Pérezrul,María Dinorah Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, Mexico
description	ABSTRACT The brown sea cucumber Isostichopus fuscus is the most important commercial holothurian in the eastern Pacific, and its high market value caused overfishing and sharp declines of its populations and catches in several Latin American countries. In Mexico, the fishery has been intense in the northern Gulf of California since the 1990s, and it is currently under strong regulation. To evaluate the current status of the organisms, we measured the size, weight and estimated the relative condition index (Kn) of 702 specimens sampled in 86 rocky reefs of that region in 2016, at depths from 3 to 22 m. Mean length ± SD was 22.32 ± 5.23 cm, lower than average in the northern Gulf, but nevertheless, the average weight was 420.61 ± 192.48 g, among the highest recorded in the eastern Pacific; this is presumably due to the high primary production of the region that favors the presence of well-nourished organisms. The weight (W)-length (L) relationship was W = 3.27 L1.56, and condition index ranged from 0.045 to 2.13 (mean Kn = 0.96 ± 0.29), a figure that did not differ to that reported along the Mexican Pacific. There were differences in the value of Kn among sites, being higher in areas that are subject to the low fishing effort.
author	Reyes-Bonilla,Héctor Calderón-Aguilera,Luis E. Galaviz-López,Juan Manuel Herrero-Pérezrul,María Dinorah
author_facet	Reyes-Bonilla,Héctor Calderón-Aguilera,Luis E. Galaviz-López,Juan Manuel Herrero-Pérezrul,María Dinorah
author_sort	Reyes-Bonilla,Héctor
title	Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, Mexico
title_short	Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, Mexico
title_full	Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, Mexico
title_fullStr	Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, Mexico
title_full_unstemmed	Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, Mexico
title_sort	size and relative condition index of the brown sea cucumber isostichopus fuscus in the northern gulf of california, mexico
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=S0718-560X2018000400831
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_version_	1714205207847501824

Size and relative condition index of the brown sea cucumber Isostichopus fuscus in the northern Gulf of California, Mexico

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