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

IF 0.8 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Scientia Marina Pub Date : 2023-10-03 DOI:10.3989/scimar.05315.069

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

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引用次数: 0

Abstract

The hake (Merluccius merluccius) fishery occupies an important place in the Moroccan trawl fishery. Despite the ecological and commercial value of this species, the reproductive biology of European hake populations in Moroccan coastal waters has been little studied. Here, we describe the seasonal variations of gonad histology of hake collected from August 2017 to August 2018 along the northern Atlantic coast of Morocco. The histological changes were compared with macroscopical changes, and the body length at first maturity (L50) was calculated. The results revealed differences between macroscopic and histological maturity staging of the gonads. The L50 was estimated to be 34.7 cm for females and 28.6 cm for males (histology-based) and 30.6 cm for females and 26.8 cm for males (macroscopy-based). In addition, the observations of ovarian maturity indicated the presence of a protracted spawning season throughout the year with a peak around January and in midsummer.

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摩洛哥北大西洋沿岸Merluccius Merluccius(放线翅目:Merluccius科)生殖的性腺组织学分析

鳕(Merluccius Merluccius)渔业在摩洛哥拖网渔业中占有重要地位。尽管该物种具有生态和商业价值，但摩洛哥沿海水域欧洲鳕鱼种群的生殖生物学研究很少。在这里，我们描述了2017年8月至2018年8月在摩洛哥北大西洋沿岸收集的鳕鱼的性腺组织学的季节性变化。将组织学变化与宏观变化进行比较，计算初成熟体长(L50)。结果揭示了性腺的宏观和组织学成熟分期的差异。L50女性为34.7 cm，男性为28.6 cm(基于组织学)，女性为30.6 cm，男性为26.8 cm(基于宏观)。此外，卵巢成熟度的观察表明，全年存在一个漫长的产卵季节，在1月和仲夏左右达到高峰。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scientia Marina 生物-海洋与淡水生物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Scientia Marina is the successor to Investigación Pesquera, a journal of marine sciences published since 1955 by the Institut de Ciències del Mar de Barcelona (CSIC). Scientia Marina is included in the Science Citation Index since 1998 and publishes original papers, reviews and comments concerning research in the following fields: Marine Biology and Ecology, Fisheries and Fisheries Ecology, Systematics, Faunistics and Marine Biogeography, Physical Oceanography, Chemical Oceanography, and Marine Geology. Emphasis is placed on articles of an interdisciplinary nature and of general interest.