EFFECTS OF TEMPERATURE ON THE SIZE OF AQUATIC ECTOTHERMS - EXCEPTIONS TO THE GENERAL RULE
EFFECTS OF TEMPERATURE ON THE SIZE OF AQUATIC ECTOTHERMS - EXCEPTIONS TO THE GENERAL RULE
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DOI：
10.1016/0306-4565(94)00028-h
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发表时间：
1995-02-01
影响因子：
2.7
通讯作者：
ATKINSON, D
中科院分区：
文献类型：
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作者：
ATKINSON, D
1.在61项关于水生外温动物的研究中，在55例（90.2%）中，饲养温度升高（显然对生长和发育没有压力）导致生物体在给定发育阶段的大小减小，只有6例（9.8%）增加。大小缩小规则的六个例外包括一种硅藻（三角褐指藻），一种桡足类（鲑鱼）和四种蜉蝣（蜉蝣目）。通过比较它们的生活史和生态位与其他近缘物种的生活史和生态位，研究了这些例外在多大程度上可以由四种机制中的每一种来解释。对三角褐指藻的反应没有满意的解释，但其机制与S.鲑的主要优势是：减少缺氧的风险，低风险的外温动物捕食和生活周期的季节性限制。后者也可能有助于解释四个蜉蝣例外。
1. Of 61 studies of aquatic ectotherms, increased rearing temperature (apparently not stressful for growth and development) caused a reduction in organism size at a given developmental stage in 55 cases (90.2%) and an increase in only six (9.8%).2. The six exceptions to the size-reduction rule included one diatom (Phaeodactylum tricornutum), one copepod (Salmincola salmoneus) and four species of mayfly (Ephemeroptera). The extent to which these exceptions could be explained by each of four mechanisms was investigated by comparing their life cycles and niches with those of other closely-related species.3. No satisfactory explanation could be found for the response of P. tricornutum, but mechanisms consistent with the response of S. salmoneus were: reduced risk of oxygen shortage, low risk of ectotherm predation and seasonal constraints on the life cycle. The latter may also help explain the four mayfly exceptions.