Variation of shrimp total catch related to the geographic distribution of sediments at fishing zone 90, Gulf of Tehuantepec, Oaxaca, Mexico

Authors

  • Pedro Cervantes-Hernández Universidad del Mar, campus Puerto Ángel Instituto de Recursos. Carretera a Zipolite, Ciudad Universitaria s/n, Distrito de San Pedro Pochutla A. P. 47. Puerto Ángel, Oaxaca, 70902. México
  • Aideé Egremy-Valdez Universidad del Mar, campus Puerto Ángel Instituto de Recursos. Carretera a Zipolite, Ciudad Universitaria s/n, Distrito de San Pedro Pochutla A. P. 47. Puerto Ángel, Oaxaca, 70902. México

Keywords:

Catch, Chiapas, Gulf of Tehuantepec, sediments, shrimp

Abstract

The fishing zone 90 is located in the Gulf of Tehuantepec and this is composed of five sub-sectors from S-91 to S-95. The Oaxaqueña Coast is located between Salina Cruz City and The Boca de Tonalá (in the Mar Muerto lagoon sytem), where the S-91 and S-92 sub-sectors are located. The Chiapaneca Coast is located between the Boca de Tonalá and Puerto Chiapas, where the S-93, S-94 and S-95 sub-sectors are located. From S-91 towards S-95 sub-sectors the total catch of shrimp resource increased from 160 to 1,030 Kg, coincided with a descendent gradient of gravel and an ascendant gradient of mud (g). Sand was present in all sub-sectors, but was not dominant at the coast level except towards the oceanic front. Based on geographic information system techniques, at the fishing zone 90 two shrimp harvest sub-systems were observed and delimited. The first of those is the Oaxaqueña Coast where was recorded a lower shrimp catch level with gravel dominant in the S-91 sub-sector and a gravel-sand mix in the S-92 sub-sector. The second the Chiapaneca Coast where was recorded a higher shrimp catch level with mud dominant in the S-93, S-94 and S-95 sub-sectors. In this last place, shrimp resource showed an ecological distribution aggregate (Negative Binomial). Estimated correlation between total catch of shrimp resource and mud was significant (R = 0.867, p < 0.05) but it was not significant with gravel and sand.

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Published

2017-01-03

How to Cite

Cervantes-Hernández, P., & Egremy-Valdez, A. (2017). Variation of shrimp total catch related to the geographic distribution of sediments at fishing zone 90, Gulf of Tehuantepec, Oaxaca, Mexico. HIDROBIOLÓGICA, 23(1), 111–123. Retrieved from https://hidrobiologica.izt.uam.mx/hidrobiologica/index.php/revHidro/article/view/627

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