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Seasonal distribution and reproductive strategy of seahorses

机译：海马的季节性分布和繁殖策略

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摘要

The unique morphology and life history characteristics make seahorses excellent flagship species for marine ecosystems. The ecological rarity of seahorses has made it difficult to address fundamental demographic processes of seahorses, such as seasonal migration and ecological characteristics. This 3-year investigation evaluated, for the first time, the seasonal distribution of a wild seahorse, Hippocampus mohnikei, and its ecological significance. The results revealed a significant difference in the abundance of wild H. mohnikei populations between warm and cold seasons, indicating that seahorses might undertake a seasonal inshore-offshore migration every year. A total of 42 794 samples were taken during the 3-year survey in the Laizhou Bay, and migratory seahorses had the highest reproductive rates from July to September each year, suggesting that seahorse reproduction might be an important trigger for variation in distribution and migration. Moreover, water temperature might also affect the temporal and spatial abundance of migratory seahorses. There was no genetic subdivision among the different geographical populations of H. mohnikei along China's coast. In conclusion, this study confirmed that large-scale seasonal seahorse migrations occur periodically and that reproduction is one of the important drivers, suggesting that closed-season fishing of breeding grounds is essential and applicable for seahorse conservation.
机译：独特的形态和生活史特征使海马成为海洋生态系统的极佳旗舰物种。海马的生态稀缺性使得难以解决海马的基本人口统计过程，例如季节性迁徙和生态特征。这项为期3年的调查首次评估了野生海马mohnikei的季节性分布及其生态意义。结果表明，在温暖和寒冷季节之间，野生H. mohnikei种群的数量存在显着差异，这表明海马每年可能会进行季节性的近岸-近海迁移。在为期三年的莱州湾调查中，共采集了42 794个样本，而迁徙海马的繁殖率在每年7月至9月间最高，表明海马繁殖可能是分布和迁移变化的重要诱因。此外，水温还可能影响迁徙海马的时空丰度。在中国沿海地区的不同地理种群中，无基因细分。总之，这项研究证实，大规模季节性海马迁徙是周期性发生的，繁殖是重要的驱动因素之一，这表明繁殖季节的封闭季节捕捞对于海马养护至关重要。

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  • 来源
    《ICES Journal of Marine Science》 |2017年第8期|2170-2179|共10页
  • 作者

    Qin Geng; Zhang Yanhong; Ho Adeljean L. F. C.; Zhang Yuan; Lin Qiang;

  • 作者单位

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, 164 Xingangxi Rd, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, 164 Xingangxi Rd, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, 164 Xingangxi Rd, Guangzhou 510301, Guangdong, Peoples R China|Bethune Cookman Univ, Dept Integrated Environm Sci, 640 Dr Mary McLeod Bethune Blvd, Daytona Beach, FL 32114 USA;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, 164 Xingangxi Rd, Guangzhou 510301, Guangdong, Peoples R China|Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, 164 Xingangxi Rd, Guangzhou 510301, Guangdong, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    genetic divergence; Hippocampus mohnikei; migration; population; reproduction;

    机译：遗传差异;海马;迁移;种群;繁殖;

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