Traits controlling body size in copepods: separating general constraints from species-specific strategies
Traits controlling body size in copepods: separating general constraints from species-specific strategies
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DOI：
10.3354/meps11873
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发表时间：
2016-10-25
影响因子：
2.5
通讯作者：
Campbell, Robert G.
中科院分区：
文献类型：
--
作者：
Banas, Neil S.;Campbell, Robert G.
一个新的合成的实验室测量的食物饱和的发展和增长，在不同的桡足类类群进行了区分一般异速生长限制桡足类生理学的应急策略，与其他原因的大小相关的理论框架。经过温度校正后，哲水蚤个体发育的生长速率异速生长不一致，其中它遵循经典的-0.3幂律缩放，以及更宽的成虫大小W-α谱（0.3至2000 μ g C，Oithona spp.新哲水蚤属（Neocalanus spp.），在其上，经典缩放似乎仅表示上限。在全尺寸谱上，经过温度校正后，相对于-0.3幂定律的生长速率g（0）与成虫尺寸的相关性优于相对（温度校正）发育速率u（0）;相反，在更精细的多样性尺度上（在哲水蚤属中，或在一般大于50 μ g C的类哲水蚤中，u（0）与成体大小的相关性较好，g（0）的影响不显著。在所有这些尺度中，相对生长和发育速率的比值g（0）/u（0）比单独的g（0）或u（0）更好地预测了成体大小，与个体生长的简单模型一致。
A new synthesis of laboratory measurements of food-saturated development and growth across diverse copepod taxa was conducted in a theoretical framework that distinguishes general allometric constraints on copepod physiology from contingent strategies that correlate with size for other reasons. After temperature correction, the allometry of growth rate is inconsistent between the ontogeny of Calanus spp., where it follows the classic -0.3 power-law scaling, and a broader spectrum of adult size W-a (0.3 to 2000 mu g C, Oithona spp. to Neocalanus spp.), across which the classic scaling appears to represent only an upper limit. Over the full size spectrum, after temperature correction, a growth rate g(0) relative to the -0.3 power law correlates with adult size better than does relative (temperature- corrected) development rate u(0); in contrast, at a finer scale of diversity (among Calanus spp., or among large (>50 mu g C) calanoids in general), u(0) is the better correlate with adult size and the effect of g(0) is insignificant. Across all these scales, the ratio of relative growth and development rates g(0)/u(0) is a better predictor of adult size than g(0) or u(0) alone, consistent with a simple model of individual growth.