澳大利亚东海岸黑宝石鱼(Protonibea diacanthus)的繁殖生物学

IF 0.7 4区 农林科学 Q4 FISHERIES Journal of Applied Ichthyology Pub Date : 2024-08-13 DOI:10.1155/2024/8877169
Samuel M. Williams, Jonathan D. Mitchell, Naomi L. Brunjes, Susannah Leahy, Adam Barnett, Heather Middleton, Darryl L. Whitehead
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引用次数: 0

摘要

黑宝石鱼(Protonibea diacanthus)分布于印度洋-太平洋中部的热带沿海水域。长期以来,它一直被视为重要的休闲和个体渔业物种,但由于对其大鱼鳔的需求,它已日益成为商业渔业的目标。为了更好地了解捕捞压力的变化会如何影响整个澳大利亚东部的P. diacanthus种群的可持续开发,我们对昆士兰中部两个管理区的该物种的繁殖生物学进行了评估。研究的生殖特征包括成熟时的大小、受精率、产卵模式和季节。对两个主要管理区的产卵周期进行了评估,结果表明,在早春时节,性腺指数会增加,随后在 9 月至 3 月期间会出现产卵现象,9 月至 11 月是产卵高峰期。雌鱼每批产卵 450 万 ± 140 万个卵母细胞(平均值 ± SE)。产卵周期在纬度上没有差异,但与澳大利亚北部其他地区有所不同。本研究提供了可靠的成熟度和受精率信息,以改进未来对P. diacanthus的评估和可持续管理。
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Reproductive Biology of Black Jewfish (Protonibea diacanthus) off the East Coast of Australia

The black jewfish (Protonibea diacanthus) occurs in tropical coastal waters throughout the central Indo-Pacific. It has long been valued as an important recreational and artisanal fishery species but has become increasingly targeted by commercial fisheries due to demand for its large swim bladder. To better understand how changes in fishing pressure may impact the sustainable exploitation of P. diacanthus populations throughout Eastern Australia, we evaluated the reproductive biology of the species across two management regions in Central Queensland. Reproductive characteristics studied included the size at maturity, fecundity, spawning mode, and season. Spawning periodicity was evaluated throughout the two major management regions and revealed an increase in the gonadosomatic index during the early austral spring, followed by evidence of spawning occurring from September through March with a peak from September to November. Females were found to produce ∼4.5 million ± 1.4 million oocytes (mean ± SE) per batch. Spawning periodicity did not vary latitudinally but was found to differ from other regions in northern Australia. The present study provides reliable maturity and fecundity information to improve future assessment and sustainable management of P. diacanthus.

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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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