海面温度对澳大利亚昆士兰州雌性珍珠鲈鱼(Glaucosoma capblare Macleay,1881)繁殖生物学的影响

IF 0.7 4区 农林科学 Q4 FISHERIES Journal of Applied Ichthyology Pub Date : 2023-08-01 DOI:10.1155/2023/5529782
M. J. Campbell, Jaimee E. Joiner, Mark F. McLennan, I. Tibbetts
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引用次数: 0

摘要

珍珠鲈鱼是澳大利亚东海岸的特有物种,有着悠久的开发历史。最近的种群评估表明,从长远来看,目前的捕鱼死亡率是不可持续的。为了更好地为珍珠鲈鱼种群的管理提供信息,并解决我们对其生殖生物学理解的差距,我们调查了2018年至2022年间从昆士兰南部和中部水域采集的雌性鲈鱼的性腺发育模式、成熟时的估计长度和年龄以及批量繁殖力。平均性腺体指数(GSI)在时间和空间上都有变化,最大值出现在昆士兰州南部的南秋和昆士兰州中部的夏季,与25.26至26.32°C的海面温度一致。雌性成熟时的长度和年龄为353 mm(叉长,FL)和4.42 年,批量繁殖力(B)与FL相关,因此Ln(B) = 2.45 × Ln(FL) + 3.90.我们的研究结果将为管理策略提供信息,以将库存恢复到可接受的开采水平。
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Sea Surface Temperature Affects the Reproductive Biology of Female Pearl Perch (Glaucosoma scapulare Macleay, 1881) in Queensland, Australia
Pearl perch (Glaucosoma scapulare) are endemic to the east coast of Australia and have a long history of exploitation. Recent stock assessments indicate that the current rate of fishing mortality is unsustainable in the long term. To better inform the management of the pearl perch stock and to address gaps in our understanding of their reproductive biology, we investigated patterns in gonad development and estimated length- and age-at-maturity and batch fecundity from females collected from southern and central Queensland waters between 2018 and 2022. The mean gonadosomatic index (GSI) varied both temporally and spatially, with maxima in the austral autumn in southern Queensland and in summer in central Queensland, coinciding with sea surface temperatures between 25.26 and 26.32°C. The length- and age-at-maturity of females were 353 mm (fork length, FL) and 4.42 years, respectively, and batch fecundity (B) was correlated to FL such that Ln(B) = 2.45 × Ln(FL) + 3.90. Our results will inform a management strategy to recover the stock to acceptable levels of exploitation.
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来源期刊
Journal of Applied Ichthyology
Journal of Applied Ichthyology 生物-海洋与淡水生物学
CiteScore
2.30
自引率
11.10%
发文量
73
审稿时长
3-8 weeks
期刊介绍: The Journal of Applied Ichthyology publishes articles of international repute on ichthyology, aquaculture, and marine fisheries; ichthyopathology and ichthyoimmunology; environmental toxicology using fishes as test organisms; basic research on fishery management; and aspects of integrated coastal zone management in relation to fisheries and aquaculture. Emphasis is placed on the application of scientific research findings, while special consideration is given to ichthyological problems occurring in developing countries. Article formats include original articles, review articles, short communications and technical reports.
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