Geographical Variations in Prosome Length and Body Weight of Neocalanus Copepods in the North Pacific
Geographical Variations in Prosome Length and Body Weight of Neocalanus Copepods in the North Pacific
复制标题
北太平洋新桡足类前体长度和体重的地理差异
DOI：
10.1023/a:1022895802468
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发表时间：
2003
影响因子：
2.3
通讯作者：
S. Hashimoto
中科院分区：
文献类型：
--
作者：
T. Kobari;K. Tadokoro;A. Shiomoto;S. Hashimoto
桡足类新哲水蚤（Neocalanus copepods，N. cristatus，冠突拟步行虫N. plumchrus和N. 1998年和1999年春季至初夏，在北太平洋南北和东西两个样带上采集了10个（flemingeri）样点。向南和向东增加的模式明显的水温，虽然没有观察到显着的模式叶绿素a浓度。所有新哲水蚤物种的原体长度和体重表现出较大的地理差异，较小的南部和东部沃茨。比较前体长度与体重之间的关系，在东部样本中，前体长度与体重之间的偏差很大（在给定的前体长度下体重较低）。cristatus和N. plumchrus。逐步回归分析表明，前体长度和体重的地理变异与温度变化呈显著负相关。这些结果表明，温度是一个更重要的环境因子比叶绿素a浓度的影响，在北太平洋的新哲水蚤桡足类的前体长度和体重的地理变异。
Geographical variations in prosome length and body weight of Neocalanus copepods (N. cristatus, N. plumchrus and N. flemingeri) were investigated on samples from North-South and East-West transects in the North Pacific during spring to early summer in 1998 and 1999. Southward and eastward increasing patterns were pronounced for water temperature, although no significant pattern was observed for chlorophyll a concentrations. All Neocalanus species showed large geographical variations in prosome length and body weight, being smaller in the southern and eastern waters. Comparing the relationship between prosome length and body weight, large deviations (lower body weight at a given prosome length) were evident for the eastern specimens of N. cristatus and N. plumchrus. In stepwise regression analysis, the geographical variations of prosome length and body weight revealed a significantly negative correlation with temperature variations. These results suggest that temperature is a more important environmental factor than chlorophyll a concentration in its effect on geographical variations in prosome length and body weight of Neocalanus copepods in the North Pacific.