Thermal dependency of burrowing in three species within the bivalve genus Laternula: a latitudinal comparison

Simon Anthony Morley; Koh Siang Tan; Robert W. Day; Stephanie M. Martin; Hans-O. Poertner; Lloyd S. Peck

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Thermal dependency of burrowing in three species within the bivalve genus Laternula: a latitudinal comparison

机译：双壳类属Laternula中三个物种的穴位热依赖性：经纬度比较

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The upper thermal limits for burrowing and survival were compared with micro-habitat temperature for anomalodesmatan clams: Laternula elliptica (Antarctica, 67°S); Laternula recta, (temperate Australia, 38°S) and Laternula truncata (tropical Singapore, 1°N). Lethal limits (LT_(50)) were higher than burrowing limits (BT_(50)) in L. elliptica (7.5-9.0 and 2.2℃) and L. recta (winter, 32.8-36.8 and 31.1-32.8℃) but the same range for L. truncata (33.0-35.0 and 33.4-34.9℃). L. elliptica and L. truncata had a BT_(50) 0.4 and 2.4-3.9℃, respectively, above their maximum experienced temperature. L. recta,rnwhich experience solar heating during midday low tides, had a BT_(50) 0.7-2.4℃ below and a range for LT_(50) that spanned their predicted environmental maximum (33.5℃). L. recta showed no seasonal difference in LT_(50) or BT_(50). Our single genus comparisons contrast with macrophysiological studies showing that temperate species cope better with elevated temperatures.

机译：将穴居和生存的热上限与异形蛤的微生境温度进行了比较：椭圆红Later（南极洲，67°S）；直枝红大猩猩（澳大利亚温带，南纬38度）和特兰卡特热带大树（新加坡，热带，南纬1度）。在椭圆乳杆菌（7.5-9.0和2.2℃）和直肠乳杆菌（冬天，32.8-36.8和31.1-32.8℃）中，致死极限（LT_（50））高于洞穴极限（BT_（50）），但相同truncata的最高温度范围（33.0-35.0和33.4-34.9℃）。椭圆L. elliptica和特兰卡L. truncata的BT_（50）分别比其最高经历温度高0.4和2.4-3.9℃。在中午退潮时经历太阳加热的直立乳酸菌的BT_（50）低于0.7-2.4℃，而LT_（50）的范围超过了其预测的最大环境温度（33.5℃）。直肠乳杆菌显示LT_（50）或BT_（50）没有季节性差异。我们的单属比较与宏观生理学研究相反，后者表明温带物种在高温下能更好地应对。

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《Marine biology》 |2009年第10期|1977-1984|共8页
作者
Simon Anthony Morley; Koh Siang Tan; Robert W. Day; Stephanie M. Martin; Hans-O. Poertner; Lloyd S. Peck;
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British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK;

Tropical Marine Science Institute, National University of Singapore, 14 Kent Ridge Road, Singapore 119223, Singapore;

Zoology Department, University of Melbourne, Parkville 3010, Australia;

14 Duck Lane, Eynesbury, St. Neots, Cambs PE192DD, UK;

Alfred Wegener Institute for Polar and Marine Research, Postfach 12 01 61, 27515 Bremerhaven, Germany;

British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK;

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Thermal dependency of burrowing in three species within the bivalve genus Laternula: a latitudinal comparison

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