Stock assessment of the warty sea cucumber fishery (Parastichopus parvimensis) of NW Baja California

Ernesto A. Chávez, M. A. de lourdes salgado-rogel, Julio Palleiro-Nayar

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The catch of the warty sea cucumber Parastichopus parvimensis of northwestern Baja California declined since 1997 from 622 metric tons to almost one third through the last thirteen years, in a relatively stable harvest. The fishery employs 294 fishermen, with annual profits of $243,000 used. The goal of the study was to assess the stock biomass, the socioeconomic performance of the fishery, and to evaluate harvesting scenarios. A relative constancy of fishing mortality (F) and the stock biomass were observed the last thirteen years. Current profits per fisher are near the maximum the fishery can produce, which is profitable under a narrow combination of age of first catch and F. Fishermen seem to avoid unprofitable activity when fishing intensity increases, so there is an apparent tendency to reduce economic risk by exerting a low effort. Immature animals are exploited, but under the low F applied, the stock can withstand it without showing signs of depletion.
Original languageAmerican English
Pages (from-to)136-147
Number of pages121
JournalCalifornia Cooperative Oceanic Fisheries Investigations Reports
StatePublished - 1 Dec 2011
Externally publishedYes

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Sea Cucumbers
Fisheries
Holothuroidea
stock assessment
fishery
fisheries
fishermen
Biomass
profits and margins
fishing mortality
constancy
biomass
socioeconomics
fishing
immatures
Economics
economics
Mortality
animal
sea

Cite this

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abstract = "The catch of the warty sea cucumber Parastichopus parvimensis of northwestern Baja California declined since 1997 from 622 metric tons to almost one third through the last thirteen years, in a relatively stable harvest. The fishery employs 294 fishermen, with annual profits of $243,000 used. The goal of the study was to assess the stock biomass, the socioeconomic performance of the fishery, and to evaluate harvesting scenarios. A relative constancy of fishing mortality (F) and the stock biomass were observed the last thirteen years. Current profits per fisher are near the maximum the fishery can produce, which is profitable under a narrow combination of age of first catch and F. Fishermen seem to avoid unprofitable activity when fishing intensity increases, so there is an apparent tendency to reduce economic risk by exerting a low effort. Immature animals are exploited, but under the low F applied, the stock can withstand it without showing signs of depletion.",
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Stock assessment of the warty sea cucumber fishery (Parastichopus parvimensis) of NW Baja California. / Chávez, Ernesto A.; de lourdes salgado-rogel, M. A.; Palleiro-Nayar, Julio.

In: California Cooperative Oceanic Fisheries Investigations Reports, 01.12.2011, p. 136-147.

Research output: Contribution to journalArticle

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