澳大利亚大堡礁与珊瑚覆盖无关的普通珊瑚鳟鱼(plectroomus leopardus)生理状况的变化

IF 2.1 3区 农林科学 Q2 FISHERIES Fishes Pub Date : 2023-10-05 DOI:10.3390/fishes8100497
Morgan S. Pratchett, Ciemon F. Caballes, Jean-Paul A. Hobbs, Joseph D. DiBattista, Brock Bergseth, Peter Waldie, Curtis Champion, Samuel P. Mc Cormack, Andrew S. Hoey
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引用次数: 0

摘要

有各种各样的鱼类只生活在珊瑚礁上,尽管目前还不清楚这些物种(尤其是体型较大的渔业目标物种)在多大程度上依赖于珊瑚提供的特定珊瑚礁栖息地。本研究探讨了澳大利亚大堡礁普通珊瑚鳟鱼(Plecropomus leopardus)生理状况的变化,明确测试了在严重的大规模白化和珊瑚损失之后,鱼类状况是否随着当地珊瑚覆盖的变化而变化。在本研究考虑的地点中,豹豹的生理状况(特别是长度-重量关系、肝细胞空泡和电相角)和生境形成珊瑚的活盖差异很大,但这些因素之间几乎没有对应关系。鱼类状况主要受鱼类大小的影响,并随纬度的变化而变化。虽然最近的珊瑚白化和珊瑚损失对豹斑鲷的生理状况没有明显的影响,但这并不意味着这些重要的渔业物种将不受环境条件和珊瑚礁生境进一步变化的影响。因此,渔业管理人员必须对气候变化和其他人为压力对渔业资源的明显影响保持警惕。
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Variation in the Physiological Condition of Common Coral Trout (Plectropomus leopardus) Unrelated to Coral Cover on the Great Barrier Reef, Australia
There are a wide variety of fishes that occur exclusively on coral reefs, though it is unclear to what extent these species (especially larger-bodied fisheries target species) are reliant on the specific reef habitat provided by corals. This study explored variation in the physiological condition of common coral trout (Plecropomus leopardus) on Australia’s Great Barrier Reef, explicitly testing whether fish condition varied with local coral cover in the aftermath of severe mass bleaching and coral loss. Both the physiological condition (specifically, the length–weight relationships, hepatocyte vacuolation, and electrical phase angle) of P. leopardus and the live cover of habitat-forming corals varied greatly among the sites considered in this study, but there was little correspondence between these factors. Fish condition was largely influenced by fish size and varied with latitude. While there was no apparent effect of recent coral bleaching and coral loss on the physiological condition of P. leopardus, this does not mean that these key fisheries species will be unaffected by further changes to the environmental conditions and reef habitat. It is important, therefore, that fisheries managers remain vigilant to apparent effects of climate change and other anthropogenic pressures on fisheries stocks.
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Fishes
Fishes Multiple-
CiteScore
1.90
自引率
8.70%
发文量
311
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