Author:
McLaren I. A.,Sévigny J.-M.,Frost B. W.
Abstract
Feulgen microspectrophotometry revealed wide variation within and among six species of Pseudocalanus in estimated amounts of DNA in diploid somatic nuclei of adults. Because of similar numbers of nuclei within stages across species, body sizes and temperature-corrected development times of embryos and older stages were positively correlated with these genome sizes, with adaptive consequences for life-history and production characteristics. The six genome sizes among Pseudocalanus, together with those of seven species of Calanus, form a highly significantly nonrandom series of ca. 4, 8, 13, 17, 21, and 25 pg DNA/nucleus, not attributable to polyploidy. This pattern could reflect abrupt and perhaps sympatric speciation.
Publisher
Canadian Science Publishing
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Cited by
60 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献