Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses

Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses

The brown smooth-hound shark Mustelus henlei is one of the most abundant species caught by the artisanal elasmobranch fishery off northwestern Mexico. The present study estimates the reproductive parameters for M. henlei using, for the first time, histological analysis and survey data collected from...

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Autores principales: Soto-López, Katherin, Ochoa-Báez, Rosa I, Tovar-Ávila, Javier, Galván-Magaña, Felipe
פורמט: Online
שפה:eng
יצא לאור: Iniversidad Autónoma de Baja California 2018
גישה מקוונת:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2805
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record_format ojs
institution Ciencias Marinas
collection OJS
language eng
format Online
author Soto-López, Katherin
Ochoa-Báez, Rosa I
Tovar-Ávila, Javier
Galván-Magaña, Felipe
spellingShingle Soto-López, Katherin
Ochoa-Báez, Rosa I
Tovar-Ávila, Javier
Galván-Magaña, Felipe
Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses
author_facet Soto-López, Katherin
Ochoa-Báez, Rosa I
Tovar-Ávila, Javier
Galván-Magaña, Felipe
author_sort Soto-López, Katherin
title Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses
title_short Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses
title_full Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses
title_fullStr Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses
title_full_unstemmed Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses
title_sort reproductive biology of the brown smooth-hound shark, mustelus henlei (chondrichthyes: triakidae), off northwestern mexico based on macroscopic and histological analyses
description The brown smooth-hound shark Mustelus henlei is one of the most abundant species caught by the artisanal elasmobranch fishery off northwestern Mexico. The present study estimates the reproductive parameters for M. henlei using, for the first time, histological analysis and survey data collected from May 2008 to May 2016. Mustelus henlei was reported in the landings from February to November each year (n = 1,469). Total length (TL) varied between 450 and 1,530 mm (average = 753 mm, SD = 111). The sex ratio (male:female) was similar to the 1:1 ratio. Gravid females were caught during April, August, and November. Average fecundity was 9. Length at maturity was 656 mm TL for females and 636 mm TL for males, and length at maternity, estimated for the first time for this species, was 676 mm TL. The first phases of spermatogenesis and oogenesis were identified through histological analysis of gonads from immature individuals. Semen storage was detected in the oviducal gland of females at the terminal zone, whereas in males spermatozeugmata was detected in the seminal vesicles. According to the species reproductive parameters, M. henlei can be categorized as a species of high biological productivity among elasmobranchs and can thus support certain level of fishing pressure off northwestern Mexico if adequate fishing management and regulatory measures are employed. Some of the reproductive parameters that were estimated for this species in the present study were different from those estimated for other stocks from Mexican and United States waters. Key words: reproduction, length at maturity, length at maternity, semen storage, Mustelus henlei.
publisher Iniversidad Autónoma de Baja California
publishDate 2018
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2805
_version_ 1792606974084382720
spelling oai:cienciasmarinas.com.mx:article-28052024-03-03T14:52:10Z Reproductive biology of the brown smooth-hound shark, Mustelus henlei (Chondrichthyes: Triakidae), off northwestern Mexico based on macroscopic and histological analyses Biología reproductiva del tiburón mamón Mustelus henlei (Chondrichthyes: Triakidae) frente al noroeste de México basada en análisis macroscópico e histológico Soto-López, Katherin Ochoa-Báez, Rosa I Tovar-Ávila, Javier Galván-Magaña, Felipe The brown smooth-hound shark Mustelus henlei is one of the most abundant species caught by the artisanal elasmobranch fishery off northwestern Mexico. The present study estimates the reproductive parameters for M. henlei using, for the first time, histological analysis and survey data collected from May 2008 to May 2016. Mustelus henlei was reported in the landings from February to November each year (n = 1,469). Total length (TL) varied between 450 and 1,530 mm (average = 753 mm, SD = 111). The sex ratio (male:female) was similar to the 1:1 ratio. Gravid females were caught during April, August, and November. Average fecundity was 9. Length at maturity was 656 mm TL for females and 636 mm TL for males, and length at maternity, estimated for the first time for this species, was 676 mm TL. The first phases of spermatogenesis and oogenesis were identified through histological analysis of gonads from immature individuals. Semen storage was detected in the oviducal gland of females at the terminal zone, whereas in males spermatozeugmata was detected in the seminal vesicles. According to the species reproductive parameters, M. henlei can be categorized as a species of high biological productivity among elasmobranchs and can thus support certain level of fishing pressure off northwestern Mexico if adequate fishing management and regulatory measures are employed. Some of the reproductive parameters that were estimated for this species in the present study were different from those estimated for other stocks from Mexican and United States waters. Key words: reproduction, length at maturity, length at maternity, semen storage, Mustelus henlei. El tiburón mamón Mustelus henlei es una de las especies más abundantes en las capturas de la pesca artesanal de elasmobranquios frente al noroeste de México. En el presente estudio se estimaron los parámetros reproductivos usando, por primera vez, análisis histológicos y datos de campo recolectados de mayo de 2008 a mayo de 2016. Mustelus henlei fue registrada en los desembarques de febrero a noviembre de cada año (n = 1,469). La longitud total (LT) varió entre 450 y 1,530 mm (promedio = 753 mm, desviación estándar = 111). La proporción sexual (macho:hembra) fue similar a 1:1. Se encontraron hembras grávidas en abril, agosto y noviembre. La fecundidad promedio fue de 9 crías. La talla de madurez fue de 656 mm LT para las hembras y de 636 mm LT para los machos, y la talla de maternidad, estimada por primera vez para la especie, fue de 676 mm LT. Se identificaron las primeras fases de la espermatogénesis y ovogénesis a través del análisis histológico de las gónadas en individuos inmaduros. Se encontró almacenamiento de esperma en la glándula oviducal de las hembras a nivel de la zona terminal, mientras que en los machos se encontró espermatozeugmata dentro de la vesícula seminal. Con base en sus parámetros reproductivos, M. henlei puede ser categorizada como una especie con alta productividad biológica entre los elasmobranquios y, por tanto, podría soportar ciertos niveles de presión por pesca en aguas frente al noroeste de México con un manejo pesquero y medidas de regulación adecuadas. Algunos de los parámetros reproductivos estimados para la especie en el presente estudio mostraron diferencias con aquellos estimados para otras poblaciones en aguas mexicanas y de Estados Unidos.   Palabras clave: reproducción, talla de madurez, talla de maternidad, almacenamiento de esperma, Mustelus henlei. Iniversidad Autónoma de Baja California 2018-06-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf text/xml text/xml https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2805 10.7773/cm.v44i2.2805 Ciencias Marinas; Vol. 44 No. 2 (2018); 125–139 Ciencias Marinas; Vol. 44 Núm. 2 (2018); 125–139 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2805/420420445 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2805/420421007 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2805/420420621 Copyright (c) 2018 Ciencias Marinas https://creativecommons.org/licenses/by/4.0

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