Hidden in the ocean: The importance of detecting hybridisation in pelagic and deep-water fishes

IF 5.6 1区 农林科学 Q1 FISHERIES
Carlo Pecoraro, Chiara Papetti, Carmelo Fruciano
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Abstract

The widespread occurrence of hybridisation in fishes suggests the need to revisit its importance for both a basic understanding of biological principles and practical applications for management and conservation. Despite evidence of its pervasiveness, the phenomenon of hybridisation in fish is not uniformly studied across species and environments. We note how natural hybridisation in pelagic and deep-sea fish has been rarely reported. For this reason, we carry out an analysis using both standard and phylogenetic comparative methods. Our results suggest a lack of evidence for the idea that pelagic and deep-sea fish are inherently less prone to hybridise. Likely, hybridisation and introgression are systematically underestimated in these groups. In light of this, we discuss why underestimation of hybridisation is problematic, and what may be done to ameliorate the situation. We propose scalable and cost-effective prioritisation, sampling and analysis strategies, to ease existing biases in assessing the impact of hybridisation among pelagic and deep-sea species and to ultimately improve the management and conservation – as well as basic biological knowledge – of these important species.

Abstract Image

隐藏在海洋中:检测中上层和深水鱼类杂交的重要性
鱼类杂交现象的广泛存在表明,有必要重新审视其重要性,既要对生物学原理有基本的理解,又要对管理和保护有实际应用。尽管有证据表明其普遍存在,但鱼类杂交现象并没有在不同物种和环境中得到统一的研究。我们注意到中上层和深海鱼类的自然杂交很少被报道。因此,我们使用标准和系统发育比较方法进行了分析。我们的研究结果表明,缺乏证据支持远洋和深海鱼类天生不太容易杂交的观点。在这些群体中,杂交和渗入很可能被系统地低估了。有鉴于此,我们讨论了为什么低估杂交是有问题的,以及可以采取什么措施来改善这种情况。我们提出了可扩展且具有成本效益的优先顺序、采样和分析策略,以缓解评估远洋和深海物种杂交影响时存在的偏见,并最终改善这些重要物种的管理和保护,以及基本的生物学知识。
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来源期刊
Fish and Fisheries
Fish and Fisheries 农林科学-渔业
CiteScore
12.80
自引率
6.00%
发文量
83
期刊介绍: Fish and Fisheries adopts a broad, interdisciplinary approach to the subject of fish biology and fisheries. It draws contributions in the form of major synoptic papers and syntheses or meta-analyses that lay out new approaches, re-examine existing findings, methods or theory, and discuss papers and commentaries from diverse areas. Focal areas include fish palaeontology, molecular biology and ecology, genetics, biochemistry, physiology, ecology, behaviour, evolutionary studies, conservation, assessment, population dynamics, mathematical modelling, ecosystem analysis and the social, economic and policy aspects of fisheries where they are grounded in a scientific approach. A paper in Fish and Fisheries must draw upon all key elements of the existing literature on a topic, normally have a broad geographic and/or taxonomic scope, and provide general points which make it compelling to a wide range of readers whatever their geographical location. So, in short, we aim to publish articles that make syntheses of old or synoptic, long-term or spatially widespread data, introduce or consolidate fresh concepts or theory, or, in the Ghoti section, briefly justify preliminary, new synoptic ideas. Please note that authors of submissions not meeting this mandate will be directed to the appropriate primary literature.
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