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首页> 外文期刊>Estuarine Coastal and Shelf Science >Sympatric occurrence and population dynamics of Scylla spp. in equatorial climate: Effects of rainfall, temperature and lunar phase
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Sympatric occurrence and population dynamics of Scylla spp. in equatorial climate: Effects of rainfall, temperature and lunar phase

机译：Scylla spp的同胞发生和种群动态。在赤道气候中：降雨，温度和月相的影响

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摘要

Mud crabs (Scylla spp.) are known to exist sympatrically in the wild. However, information on their population dynamics and the influence of climate parameters and lunar phase, especially along the equatorial region, are limited. Four sampling stations representing three seas (the Strait of Malacca, South China Sea and Sulu Sea) along the equator were selected. Mud crabs were collected using baited traps during spring tides from April 2012 to July 2013. All three Scylla species, S. olivacea, S. tranquebarica and S. paramamosain live in sympatry in the three seas. Scylla olivacea is the most prevalent species in the Strait of Malacca and South China Sea, whereas S. paramamosain dominates the Sulu Sea. The total crab abundance was not affected by rainfall or temperature. The abundance of S. tranquebarica in Strait of Malacca was negatively correlated with temperature and positively correlated with rainfall whereas the abundance of S. paramamosain positively correlated with temperature only at South China Sea. Scylla tranquebarica was the largest in terms of body size and it showed interchanging abundance trends with S. paramamosain. The average body size of S. paramamosain did not differ significantly with that of S. tranquebarica and S. olivacea. This decrease is most likely attributed to overfishing. Significant seasonal fluctuations in mean carapace width were detected in S. tranquebarica and S. paramamosain, but not in S. olivacea. The monthly sex ratio of all three species occasionally fluctuates above the equal sex ratio value. Lunar phase did not affect species abundance, but males and females were significantly heavier during full moon. These findings serve as a baseline of seasonal variation in crab population dynamics that are useful in mud crab fisheries and resource management. (C) 2017 Elsevier Ltd. All rights reserved.
机译：泥蟹（Scylla spp。）已知可以在野生环境中同时存在。但是，关于它们的种群动态以及气候参数和月相的影响，特别是沿赤道地区的信息有限。沿赤道选择了代表三个海洋（马六甲海峡，南中国海和苏禄海）的四个采样站。在2012年4月至2013年7月的春季潮汐期间，使用诱捕器收集了泥蟹。所有三种Scylla物种，S。olivacea，S。tranquebarica和S. paramamosain都生活在这三个海中。在马六甲海峡和南海海域中，橄榄小圆盘藻是最普遍的物种，而苏拉海中则以副生沙门氏菌为主。蟹的总丰度不受降雨或温度的影响。马六甲海峡海域S. tranquebarica的丰度与温度呈负相关，与降雨呈正相关，而副沙门氏菌S. paramamosain的丰度仅与南海呈正相关。锡兰小yl在体型上最大，并且显示出与副寄生沙门氏菌相互交换的丰度趋势。 S. paramamosain的平均体重与S. tranquebarica和S. olivacea的平均体重没有显着差异。这种减少很可能归因于过度捕捞。在S. tranquebarica和S. paramamosain中发现平均甲壳宽度有明显的季节性波动，而在S. olivacea中则没有。这三个物种的每月性别比偶尔会在相等的性别比值以上波动。月相不影响物种的丰度，但在满月期间，雄性和雌性的体重明显增加。这些发现是螃蟹种群动态季节性变化的基线，对泥蟹渔业和资源管理很有用。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2017年第ptaa期|299-310|共12页
  • 作者

    Fazhan Hanafiah; Waiho Khor; Azri Mohammad Farhan Darin; Al-Hafiz Ismail; Norfaizza Wan Ibrahim Wan; Megat Fadhlul Hazmi; Jasmani Safiah; Ma Hongyu; Ikhwanuddin Mhd;

  • 作者单位

    Univ Malaysia Terengganu, Inst Trop Aquaculture, Kuala Terengganu 21030, Terengganu, Malaysia|Shantou Univ, Guangdong Prov Key Lab Marine Biotechnol, Shantou 515063, Guangdong, Peoples R China;

    Univ Malaysia Terengganu, Inst Trop Aquaculture, Kuala Terengganu 21030, Terengganu, Malaysia|Shantou Univ, Guangdong Prov Key Lab Marine Biotechnol, Shantou 515063, Guangdong, Peoples R China;

    Univ Malaysia Sarawak, Fac Resource Sci & Technol, Dept Mol Biol, Kota Samarahan 94300, Sarawak, Malaysia;

    Univ Malaysia Sarawak, Ctr Preuniv Studies, Kota Samarahan 94300, Sarawak, Malaysia;

    Univ Malaysia Terengganu, Inst Trop Aquaculture, Kuala Terengganu 21030, Terengganu, Malaysia;

    Univ Malaysia Terengganu, Inst Trop Aquaculture, Kuala Terengganu 21030, Terengganu, Malaysia;

    Univ Malaysia Terengganu, Inst Trop Aquaculture, Kuala Terengganu 21030, Terengganu, Malaysia;

    Shantou Univ, Guangdong Prov Key Lab Marine Biotechnol, Shantou 515063, Guangdong, Peoples R China;

    Univ Malaysia Terengganu, Inst Trop Aquaculture, Kuala Terengganu 21030, Terengganu, Malaysia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Population dynamics; Air temperature; Rainfall; Lunar phase; Scylla; Equatorial climate;

    机译：人口动态;气温;降雨;月相;西拉;赤道气候;

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