PDF(Pubmed)
Abstract：
Isotopic analyses of the incrementally growing baleen in Mysticeti have been used to learn about their feeding and movement patterns. Using methods previously applied to Pacific minke whales, stable δ15N and δ13C isotope values were measured along the baleen plates of male and female minke whales from two locations in the Northeast Atlantic. The sample sizes used in this study are comparable to those previously used in the literature, and, although limited in size, the evidence suggests differences in isotopic signatures between whales caught at different locations. Both the δ15N and δ13C data suggest whales at the higher latitude site of Svalbard have a narrower diet than the whales from Lofoten/Vesterålen in Norway. Across all whales, the δ15N data indicate the whales primarily prey on fish for much of the year, only switching to zooplankton during the spring bloom. The δ13C data fail to confirm whether the whales migrate over long distances.
摘要：
已使用对Mysticeti中逐渐生长的baleen的同位素分析来了解它们的摄食和运动模式。使用以前适用于太平洋小须鲸的方法，沿着东北大西洋两个地点的雄性和雌性小须鲸的baleen板测量了稳定的δ15N和δ13C同位素值。本研究中使用的样本量与文献中以前使用的样本量相当，and,虽然尺寸有限，证据表明，在不同地点捕获的鲸鱼之间的同位素特征存在差异。δ15N和δ13C数据均表明，斯瓦尔巴特群岛高纬度地区的鲸鱼的饮食要比挪威Lofoten/Vesterlolen的鲸鱼窄。在所有鲸鱼中，δ15N数据表明，鲸鱼在一年中的大部分时间里主要捕食鱼类，只有在春天盛开的时候才转向浮游动物。δ13C数据无法确认鲸鱼是否长距离迁移。
