波斯湾沿岸水域的沙头鲨(Troschel, 1840)的生殖生物学(鲈目:白头鲨科)

F. Izadifar, M. Safaie, M. Momeni
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引用次数: 0

摘要

本研究旨在确定2016年11月至2018年4月在波斯湾沿海水域进行的为期16个月的Spotfin平头拟Grammolites的繁殖生物学。在研究期间,采用虾底拖网作为副渔获物进行采样,共检查了635条鱼。记录的结果显示,在整个研究期间,雄性与雌性之间的性别比没有显著的1:1,55.28%的鱼是雌性。卵巢形态成熟期分析表明,栓皮蛙全年均可产卵,11月至3月为产卵高峰期。此外,该地区的GSI在11月至2月呈上升趋势,然后从3月开始下降。达到性成熟的雌性栓皮鹅的最小体型是在全长160-179mm的体型类别中观察到的。这种平头鱼的Lm50%估计为总长199.4毫米。
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Reproductive biology of Grammoplites suppositus (Troschel, 1840) (Teleostei: Platycephalidae) in coastal waters of the Persian Gulf
This study was conducted to determine reproductive biology of Spotfin flathead Grammoplites suppositus for a period 16 months from November 2016 to April 2018 in coastal waters of the Persian Gulf. Sampling was carried out by shrimp bottom trawl net as bycatch and a total of 635 fish were examined during the study period. The recorded results showed that the sex ratio between male:female was not significantly being 1:1 throughout the study period with 55.28% of fish was female. Analysis of morphological maturity stages of ovary was showed that G. suppositus can spawn in throughout the year with a peak from November to March. Also, the GSI was uptrend in November to February and then declined from March in the region. The minimum size of the female G. suppositus that reaches the sexual maturity was observed in the size classes 160-179 mm of total length. The L m50 % was estimated at 199.4 mm of total length for this flathead fish.
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来源期刊
Iranian Journal of Ichthyology
Iranian Journal of Ichthyology Agricultural and Biological Sciences-Aquatic Science
CiteScore
0.70
自引率
0.00%
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0
期刊介绍: Iranian Journal of Ichthyology (IJI) is a peer-reviewed journal for publication of high quality papers on any aspect of ichthyology and will be published 4 times a year by the Iranian Society of Ichthyology (http://www.isi-org.ir). The journal welcomes the submission of manuscripts that meets the general criteria of significance and scientific excellence, and will publish original scientific articles in the fields of ichthyology. The editors welcome the submission of original manuscripts including Research Articles, Short communications, and Views & News. Review papers by distinguished authors and Special Issues will also be considered. It is our aim to provide the international scientific community with an efficiently published journal, meeting high scientific and technical standards. Scopes of Iranian Journal of Ichthyology includes: Systematics, taxonomy, morphology, anatomy, biogeography, biodiversity, conservation, ecology and general biology of fishes (reproduction, food and feeding habits, age and growth, population dynamics, etc.). Papers on freshwater, brackish, marine and fossil fishes will be considered.
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