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Bancos naturales de invertebrados marinos comerciales, Región La Libertad (diciembre 2018)

Authors: Alfaro Mudarra, Santos E.; Rebaza Castillo, Víctor A.;

Bancos naturales de invertebrados marinos comerciales, Región La Libertad (diciembre 2018)

Abstract

En la Región La Libertad la pesca artesanal es muy importante como medio de vida de diversas comunidades costeras. Los principales recursos bentónicos son cangrejo violáceo, caracol negro y pulpo, los que, luego de muchos años de extracción intensiva, además de los efectos por el cambio climático, eventos como el Niño y La Niña, presentan diversos grados de alteración, limitando su sostenibilidad. La información que se obtiene de los monitoreos y seguimientos ayudan a proponer alternativas para manejar de manera efectiva la pesquería de esos recursos. El área de estudio estuvo comprendida desde La Granja (Puémape) (7°9’35,4”S – 79°41’8,2”W) hasta islas Guañape (8°56’25,8”S - 78°41’49,4”W). Las especies monitoreadas Platyxanthus orbignyi cangrejo violáceo, Thaisella chocolata caracol negro y Octopus mimus pulpo, presentaron biomasas y densidades reducidas, además de la presencia de elevado porcentaje de ejemplares menores a la TME o PME. El comportamiento térmico indicó condiciones oceanográficas cálidas asociadas a concentraciones de oxígeno superiores en un rango de 2 a 7 mL/L, que sugiere presencia de aguas de mezcla entre aguas costeras frías (acf) y aguas cálidas.

ABSTRACT: In the La Libertad Region (Peru) artisanal fishing serves as a crucial livelihood for various coastal communities. The primary benthic resources include purple crabs, black snails, and octopuses. Following extensive years of extraction and the impact of climate change, including occurrences such as El Niño and La Niña, these resources exhibit various levels of alteration, hindering their sustainability. Data from monitoring and surveillance activities aid in proposing effective management strategies for these resources. The study area spanned from La Granja (Puémape) (7°9’35.4”S – 79°41’8.2”W) to the Guañape islands (8°56'25.8"S - 78°41'49.4"W). Monitored species, including Platyxanthus orbignyi, Thaisella chocolata, and Octopus mimus, demonstrated reduced biomasses and densities, accompanied by a high proportion of individuals below the Minimum Legal Size (MLS) or Precautionary Minimum Exploitable (PME). Thermal behavior indicated warm oceanographic conditions with elevated oxygen concentrations ranging between 2 and 7 mL/L, suggesting the presence of mixing waters (ccw + warmer waters).

Keywords

La Libertad, Bancos invertebrados marinos, Pesca, http://purl.org/pe-repo/ocde/ford#1.06.12, Recursos bentónicos

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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