Unveiling the biochemical and haematological profile of blue shark (Prionace glauca) in the Mediterranean after bycatch.

IF 2.5 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION
Conservation Physiology Pub Date : 2025-09-20 eCollection Date: 2025-01-01 DOI:10.1093/conphys/coaf067
Lola Toomey, Andrea Bellodi, Massimiliano Bottaro, Antonella Consiglio, Eleonora Fiocchi, Margherita Soncin, Valentina Bertazzo, Maria Cristina Follesa, Amedeo Manfrin, Simone Niedermüller, Giulia Prato, Pierluigi Carbonara
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引用次数: 0

Abstract

The blue shark (Prionace glauca) is the most frequently by-caught species in longline fisheries targeting swordfish in the Mediterranean Sea. The IUCN classifies the Mediterranean blue shark population as critically endangered, but no information on haematological or biochemical parameters is available for this population. Based on a multi-year dataset of 63 blue sharks (Prionace glauca) and 18 physiological parameters, this study provides the first detailed insights into the variability of physiological indicators following bycatch in the Mediterranean Sea. We also examined differences across three post-capture condition groups and assessed the potential influence of sex and life stage (juvenile vs. adult) on physiological variability. While no significant differences emerged between sexes or life stages, clear distinctions were observed between condition groups, particularly when compared to moribund or dead individuals (condition group 3). These sharks showed signs of enhanced physiological stress, including reduced glucose, elevated lactate, and altered osmoregulatory function (lower urea and chloride, higher phosphorus). These patterns align with stress responses previously described in other shark species. Overall, the study provides a valuable baseline for future research into the physiology and conservation of Mediterranean blue sharks' population.

Abstract Image

Abstract Image

Abstract Image

揭示地中海蓝鲨(Prionace glauca)在兼捕后的生化和血液学特征。
蓝鲨(Prionace glauca)是地中海延绳钓捕捞剑鱼时最常被误捕的物种。世界自然保护联盟将地中海蓝鲨列为极度濒危物种,但没有关于该种群的血液学或生化参数的信息。基于63条蓝鲨(Prionace glauca)的多年数据集和18个生理参数,本研究首次详细了解了地中海副渔获物后生理指标的变化。我们还检查了三个捕获后条件组之间的差异,并评估了性别和生命阶段(青少年与成人)对生理变异性的潜在影响。虽然在性别或生命阶段之间没有显著差异,但在情况组之间观察到明显的差异,特别是与垂死或死亡的个体(情况组3)相比。这些鲨鱼表现出生理压力增强的迹象,包括葡萄糖减少,乳酸升高,渗透调节功能改变(尿素和氯化物降低,磷升高)。这些模式与之前在其他鲨鱼物种中描述的应激反应一致。总的来说,这项研究为未来地中海蓝鲨种群的生理学和保护研究提供了一个有价值的基线。
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来源期刊
Conservation Physiology
Conservation Physiology Environmental Science-Management, Monitoring, Policy and Law
CiteScore
5.10
自引率
3.70%
发文量
71
审稿时长
11 weeks
期刊介绍: Conservation Physiology is an online only, fully open access journal published on behalf of the Society for Experimental Biology. Biodiversity across the globe faces a growing number of threats associated with human activities. Conservation Physiology will publish research on all taxa (microbes, plants and animals) focused on understanding and predicting how organisms, populations, ecosystems and natural resources respond to environmental change and stressors. Physiology is considered in the broadest possible terms to include functional and mechanistic responses at all scales. We also welcome research towards developing and refining strategies to rebuild populations, restore ecosystems, inform conservation policy, and manage living resources. We define conservation physiology broadly and encourage potential authors to contact the editorial team if they have any questions regarding the remit of the journal.
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