Increased number of hybrids between benthic and limnetic three-spined sticklebacks in Enos Lake, Canada; the collapse of a species pair?
Article first published online: 19 APR 2005
Journal of Fish Biology
Volume 58, Issue 5, pages 1458–1464, May 2001
How to Cite
Kraak, S. B. M., Mundwiler, B. and Hart, P. J. B. (2001), Increased number of hybrids between benthic and limnetic three-spined sticklebacks in Enos Lake, Canada; the collapse of a species pair?. Journal of Fish Biology, 58: 1458–1464. doi: 10.1111/j.1095-8649.2001.tb02300.x
- Issue published online: 19 APR 2005
- Article first published online: 19 APR 2005
- (Received 27 May 2000, Accepted 29 November 2000)
- benthic/limnetic species pair;
- three-spined stickleback;
- Gasterosteus aculeatus;
- loss of biodiversity;
In July 1999, 49 three-spined sticklebacks were sampled from Enos Lake, Canada. Here a benthic/limnetic species pair is known to exist. In the sample, six individuals (12%) were of intermediate phenotype. These represent 17% of the 35 males in the sample. This large number of intermediates contrasts with the 1% in previous samples reported in 1984 and 1992 and may signal the collapse of the species pair.