地中海中部Garfish, Belone Belone (Linnaeus, 1760) (Teleostei: Belonidae)的年龄、生长和生殖生物学

IF 1.5 4区农林科学 Q3 FISHERIES

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2022-02-17 DOI:10.4194/trjfas21161

M. Châari, L. Boudaya, S. Gancitano, V. Gancitano, L. Neifar

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引用次数: 0

摘要

基于从地中海中部（突尼斯）采集的453个标本，研究了白鳍豚的某些生物学方面。雌性和雄性的总长度分别为24.2至55厘米和25.8至52.5厘米。2.36÷1的总体性别比表明，在所有规模的班级和季节中，女性都具有显著的优势。耳石读数的年龄数据显示，女性属于1-4岁年龄组，男性属于1-5岁年龄组。大多数人年龄在2岁。长重关系和von Bertalanffy生长函数参数为：雌性为W=0.003L3.419，L∞=48.48cm，k=0.57年-1和to=-1年；雄性为W=0.002L3.530，L∞=44.7cm，k=0.67年-1，to=-1岁。性腺体细胞指数模式表明，产卵每年在3月至5月之间发生一次，并持续到6月，两性的活动高峰在3月。第一次成熟时，雌性和雄性的总长度分别为37.26±0.10厘米和37.17±0.40厘米。

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Age, Growth and Reproductive Biology of the Garfish, Belone belone (Linnaeus, 1760) (Teleostei: Belonidae) in the Central Mediterranean Sea

Some aspects of the biology of the garfish Belone belone, were studied based on 453 specimens collected from the central Mediterranean (Tunisia). Total lengths ranged from 24.2 to 55 cm for females and from 25.8 to 52.5 cm for males, respectively. An overall sex ratio of 2.36 ÷ 1 shows significant dominance of females in all size classes and seasons. Age data from otoliths reading revealed that females belonged to age groups from 1 to 4 years and males from 1 to 5 years. Most of the individuals were of age group 2. Length weight relationships and von Bertalanffy growth functions parameters were: W = 0.0003 L 3.419, L∞ = 48.48 cm, k = 0.57 year -1 and to = -1 year for females and W = 0.0002 L 3.530, L∞ = 44.7 cm, k = 0.67 year-1 and to = -1 year for males. Gonadosomatic index pattern indicated that spawning occurs once a year between March and May and extends to June with peak activity in March for both sexes. The length at the first maturity was estimated at a total length of 37.26±0.10 cm for females and 37.17±0.40 cm for males.

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来源期刊

Turkish Journal of Fisheries and Aquatic Sciences FISHERIES-MARINE & FRESHWATER BIOLOGY

CiteScore

3.10

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Turkish Journal of Fisheries and Aquatic Sciences" (TrJFAS) is a refereed academic journal has been published by Central Fisheries Research Institute of Turkey and Japan International Cooperation Agency (JICA), and published in English. It aims to address research and needs of all working and studying within the many varied areas of fisheries and aquatic sciences. The Journal publishes English language original research papers, critical review articles, short communications and technical notes on applied or scientific research relevant to freshwater, brackish and marine environments. TrJFAS was published biannually (April & November) between 2001 and 2009. A great number of manuscripts have been submitted to the journal for review from acceptance of the SCI index. Thereby, the journal has been published quarterly (March, June, September and December) from 2010 to 2017. The journal will be published monthly in 2018.