Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of Mexico

ABSTRACT An integral fishery analysis was made for the population of Penaeus aztecus in the Tamaulipas-Veracruz area from 1974 to 1995. Fourteen age classes between 3 and 16 months old were found, and their respective total abundances were virtually reconstructed (this included shrimp that was caugh...

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Autores principales:	Cervantes-Hernández,Pedro, Gracia,Adolfo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2020
Materias:	Penaeus aztecus brown shrimp reproduction recruitment shrimp abundance Gulf of Mexico
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000400578
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spelling	oai:scielo:S0718-560X20200004005782020-09-23Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of MexicoCervantes-Hernández,PedroGracia,Adolfo Penaeus aztecus brown shrimp reproduction recruitment shrimp abundance Gulf of Mexico ABSTRACT An integral fishery analysis was made for the population of Penaeus aztecus in the Tamaulipas-Veracruz area from 1974 to 1995. Fourteen age classes between 3 and 16 months old were found, and their respective total abundances were virtually reconstructed (this included shrimp that was caught and shrimp that were not caught in the study area). Age classes were statistically separated into two statistical population indices: the abundance of spawners (or SI index) and the abundance of recruits (or RI index). Time series were generated for these indices to establish when reproductive and recruitment seasons began, ended, and reached maximum abundance. SI index was structured with reproductive ages from 6 to 13 months old, and RI index with young recruits of 4 months old. Reproductive season (or lagoon recruitment) spanned from middle December to early May, with the highest spawners abundance in February. Recruitment season (or marine recruitment) spanned from early April to middle September, with the highest abundance of young recruits during June/July. The seasonal changes in the abundance of spawners were described with lagoon recruitment (in the marine environment). The seasonal changes in the abundance of recruits were described with marine recruitment (between lagoons systems and the marine environment). A higher exploitation level of spawners than for young recruits was recorded. Recently closure seasons are implemented between May and August/September/October. These completely protect marine recruitment, and the lagoon recruitment remains unprotected.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.48 n.4 20202020-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000400578en10.3856/vol48-issue4-fulltext-2174
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Penaeus aztecus brown shrimp reproduction recruitment shrimp abundance Gulf of Mexico
spellingShingle	Penaeus aztecus brown shrimp reproduction recruitment shrimp abundance Gulf of Mexico Cervantes-Hernández,Pedro Gracia,Adolfo Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of Mexico
description	ABSTRACT An integral fishery analysis was made for the population of Penaeus aztecus in the Tamaulipas-Veracruz area from 1974 to 1995. Fourteen age classes between 3 and 16 months old were found, and their respective total abundances were virtually reconstructed (this included shrimp that was caught and shrimp that were not caught in the study area). Age classes were statistically separated into two statistical population indices: the abundance of spawners (or SI index) and the abundance of recruits (or RI index). Time series were generated for these indices to establish when reproductive and recruitment seasons began, ended, and reached maximum abundance. SI index was structured with reproductive ages from 6 to 13 months old, and RI index with young recruits of 4 months old. Reproductive season (or lagoon recruitment) spanned from middle December to early May, with the highest spawners abundance in February. Recruitment season (or marine recruitment) spanned from early April to middle September, with the highest abundance of young recruits during June/July. The seasonal changes in the abundance of spawners were described with lagoon recruitment (in the marine environment). The seasonal changes in the abundance of recruits were described with marine recruitment (between lagoons systems and the marine environment). A higher exploitation level of spawners than for young recruits was recorded. Recently closure seasons are implemented between May and August/September/October. These completely protect marine recruitment, and the lagoon recruitment remains unprotected.
author	Cervantes-Hernández,Pedro Gracia,Adolfo
author_facet	Cervantes-Hernández,Pedro Gracia,Adolfo
author_sort	Cervantes-Hernández,Pedro
title	Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of Mexico
title_short	Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of Mexico
title_full	Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of Mexico
title_fullStr	Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of Mexico
title_full_unstemmed	Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of Mexico
title_sort	reproductive and recruitment seasons for penaeus aztecus in the tamaulipas-veracruz area, gulf of mexico
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000400578
work_keys_str_mv	AT cervanteshernandezpedro reproductiveandrecruitmentseasonsforpenaeusaztecusinthetamaulipasveracruzareagulfofmexico AT graciaadolfo reproductiveandrecruitmentseasonsforpenaeusaztecusinthetamaulipasveracruzareagulfofmexico
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Reproductive and recruitment seasons for Penaeus aztecus in the Tamaulipas-Veracruz area, Gulf of Mexico

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