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首页> 外文期刊>Marine ecology progress series >Latitudinal variation in larval development of coral reef fishes: implications of a warming ocean
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Latitudinal variation in larval development of coral reef fishes: implications of a warming ocean

机译：珊瑚礁鱼类幼体发育的纬度变化：海洋变暖的影响

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摘要

Latitudinal gradients in water temperature may be useful for predicting the likely responses of marine species to global warming. The ranges of coral reef fishes extend into the warmest oceanic waters on the planet, but the comparative life-history traits across their full latitudinal range are unknown. Here, we examined differences in early life-history traits of 2 coral reef fishes, the damselfish Pomacentrus moluccensis and the wrasse Halichoeres melanurus, among 8 locations across 21 degrees of latitude, from northern Papua New Guinea (2.3 degrees S) to the southern Great Barrier Reef (23.3 degrees S). Water temperature during larval development ranged between 25.6 and 29.8 degrees C among sites, with the warmest sites closest to the equator. Recently settled juveniles were collected and otolith microstructure was analysed to estimate pelagic larval duration (PLD), daily growth, and size at settlement. Latitudinal comparisons revealed a non-linear relationship between temperature and each of PLD, larval growth and size at settlement. PLD declined with increasing temperature up to approx. 28 to 29 degrees C, above which it stabilised in P. moluccensis and increased in H. melanurus. Larval growth increased with increasing temperature up to approx. 28 to 29 degrees C before stabilising in P. moluccensis and decreasing in H. melanurus. Size at settlement tended to be highest at mid-latitudes, but overall declined with increasing temperature above 28.5 degrees C in both species. These results indicate that the thermal optima for growth and development is reached or surpassed at low latitudes, such that populations at these latitudes may be particularly vulnerable to global warming.
机译：水温的纬度梯度可能有助于预测海洋物种对全球变暖的可能响应。珊瑚礁鱼类的范围延伸到了地球上最温暖的海洋水域，但整个纬度范围内相对的生命历史特征尚不清楚。在这里，我们检查了从巴布亚新几内亚北部（2.3度）到大南部的8个纬度21个纬度位置的2种珊瑚礁鱼类，雀鲷Pomacentrus moluccensis和濑鱼Halichoeres melanurus在早期生命历史特征上的差异。堡礁（摄氏23.3度）。幼虫发育期间的水温在各个地点之间介于25.6和29.8摄氏度之间，最温暖的地点最靠近赤道。收集最近定居的幼体，并分析耳石的微结构，以估计浮游幼体的持续时间（PLD），日生长和定居时的大小。横向比较显示温度与PLD，幼虫生长和沉降大小之间存在非线性关系。 PLD随温度升高而下降，最高可达约。 28到29摄氏度，高于此温度则在P. moluccensis中稳定，而在H. melanurus中升高。幼虫的生长随着温度的升高而增加。 28至29摄氏度，然后在P. moluccensis中稳定，而在H. melanurus中下降。在这两个物种中，定居点的大小倾向于在中纬度最高，但总体上随着温度升高到28.5摄氏度以上而下降。这些结果表明，在低纬度地区已经达到或超过了增长和发展的热最适状态，因此这些纬度地区的人口可能特别容易受到全球变暖的影响。

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  • 来源
    《Marine ecology progress series》 |2015年第17期|129-141|共13页
  • 作者

    McLeod I. M.; McCormick M. I.; Munday P. L.; Clark T. D.; Wenger A. S.; Brooker R. M.; Takahashi M.; Jones G. P.;

  • 作者单位

    James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia|James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia|James Cook Univ, Estuary & Coastal Wetland Ecol Lab, Townsville, Qld 4811, Australia|James Cook Univ, TropWATER Ctr Trop Water & Aquat Ecosyst Res, Townsville, Qld 4811, Australia|AIMS JCU, Townsville, Qld 4810, Australia|Australian Inst Marine Sci, Townsville, Qld 4810, Australia;

    James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia|James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia;

    James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia|James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia;

    AIMS JCU, Townsville, Qld 4810, Australia|Australian Inst Marine Sci, Townsville, Qld 4810, Australia;

    James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia|James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia;

    James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia|James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia|Georgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA;

    James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia;

    James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia|James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia;

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  • 正文语种 eng
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  • 关键词

    Climate change; Growth rate; Life history plasticity; Latitudinal comparison; Lemon damselfish; Pelagic larval duration; Tail-spot wrasse; Thermal reaction norm;

    机译：气候变化;增长率;生活史可塑性;经纬度比较;柠檬雀鲷;幼虫持续时间;尾斑濑鱼;热反应规范;

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