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Science 30 September 1966:
Vol. 153. no. 3744, pp. 1641 - 1642
DOI: 10.1126/science.153.3744.1641
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Articles

Polyteny: A Source of Cryptic Speciation among Copepods

I. A. McLaren 1, Susan M. Woods 1, and J. R. Shea Jr. 1

1 Marine Sciences Centre and Anatomy Department, McGill University, Montreal, Quebec

A large form of the copepod Pseudocalanus is found in two warm, semi-landlocked fiords in arctic Canada, together with a similar but smaller form attributable to the widespread P. minutus. The large form has the same chromosomne number as P. minutus, but has larger chromosomes and a higher nuclear DNA content. There are suggestions in the literature that other similar polytenic and cryptic species occur among copepods.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Evolution of genome size by DNA doublings.
A. Sparrow and A. Nauman (1976)
Science 192, 524-529
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Science. ISSN 0036-8075 (print), 1095-9203 (online)