Reproduction of Merluccius merluccius (Actinopterygii: Merlucciidae) from the northern Atlantic coasts of Morocco based on histological analysis of gonads

Chaimae El Bouzidi; Helmut Segner; Halima Oufdou; Meryem Benziane; Abberrahim Chiaar; Mohammed Bakkali; Mounir Hassani Zerrouk

doi:10.3989/scimar.05315.069

Autores/as

Chaimae El Bouzidi Research team in Biotechnology and biomolecular engineering, FSTT, Abdelmalek Essaadi University - Centre for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern https://orcid.org/0000-0003-2962-184X
Helmut Segner Centre for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern https://orcid.org/0000-0002-1783-1295
Halima Oufdou Applied Economics Laboratory, Mohammed V University, Rue Nations Unies https://orcid.org/0000-0001-7567-5457
Meryem Benziane Laboratoire de pèche, Centre régional de l’INRH de Tanger https://orcid.org/0000-0001-7590-5435
Abberrahim Chiaar Laboratoire Histopathologie/Parasitologie, Centre Spécialisé en Pathologie des Animaux Aquatiques, Centre régional de l’INRH de Tanger https://orcid.org/0000-0003-4589-4768
Mohammed Bakkali Research team in Biotechnology and biomolecular engineering, FSTT, Abdelmalek Essaadi University https://orcid.org/0000-0001-8141-5870
Mounir Hassani Zerrouk Research team in Biotechnology and biomolecular engineering, FSTT, Abdelmalek Essaadi University https://orcid.org/0000-0001-8711-9554

DOI:

https://doi.org/10.3989/scimar.05315.069

Palabras clave:

Merluccius merluccius, Atlántico, Marruecos, histología, hermafrodita, reproducción, gónada

Resumen

La merluza (Merluccius merluccius) ocupa un lugar importante en la pesca de arrastre marroquí. A pesar del valor ecológico y comercial de esta especie, la biología reproductiva de las poblaciones de merluza europea en las aguas costeras marroquíes ha sido poco estudiada. Aquí, describimos las variaciones estacionales de la histología de las gónadas de la merluza recolectada desde agosto de 2017 hasta agosto de 2018 a lo largo de la costa atlántica norte de Marruecos. Los cambios histológicos se compararon con los cambios macroscópicos y se calculó la longitud corporal en la primera madurez (L₅₀). Los resultados revelaron diferencias entre los estadios de madurez macroscópica e histológica de las gónadas. El L₅₀ se estimó en 34,7 cm para las hembras y 28,6 cm para los machos (basado en la histología) y 30,6 cm para las hembras y 26,8 cm para los machos (basado en la macroscopía). Además, las observaciones de madurez ovárica indicaron la presencia de una estación de desove prolongada a lo largo del año, con un pico alrededor de enero y en pleno verano.

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