+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Maintenance of two genetic entities by habitat selection

Evolutionary Ecology 9(2): 131-138
Maintenance of two genetic entities by habitat selection
In the laboratory, the two species of copepods Lepeophtheirus thompsoni and Lepeophtheirus europaensis, ectoparasites of flatfishes, can meet and mate on at least one host species. In the wild however, these two species are found isolated on their sympatric hosts. Habitat selection theoretically represents a powerful enough mechanism to explain the maintenance of genetic heterogeneity in the wide sense. In this paper, the host colonization process is studied for both parasite species. It is shown that each parasite can develop and reach adult age on each host species. However, L. thompsoni is highly selective; it almost totally refuses to colonize hosts other than its natural one. Lepeophtheirus europaensis, on the contrary, readily infests turbot and brill in single-host experiments, but strongly prefers the brill when it has a choice. It appears that these two genetic entities are sympatrically maintained due to strong habitat selection. Such a pattern could theoretically only occur in a soft-selection context (density dependence). This point is discussed with respect to the different patterns in host use found in the geographical distribution of these parasites.

Accession: 002889041

DOI: 10.1007/bf01237752

Download PDF Full Text: Maintenance of two genetic entities by habitat selection

Related references

Experimental analysis of habitat selection and maintenance of genetic variation. Unknown, 1990

Theoretical analysis of habitat selection and the maintenance of genetic variation. Unknown, 1990

Joint effects of pleiotropic selection and stabilizing selection on the maintenance of quantitative genetic variation at mutation-selection balance. Genetics 162(1): 459-471, 2002

Genetic concepts for habitat conservation: the transfer and maintenance of genetic variation. Landscape and Urban Planning. February; 281: 55-62 (Special Issue), 1994

Genetic variation of loci potentially under selection confounds species-genetic diversity correlations in a fragmented habitat. Molecular Ecology (): -, 2016

Hierarchical and interactive habitat selection in response to abiotic and biotic factors The effect of hypoxia on habitat selection of juvenile estuarine fishes. Environmental Biology of Fishes 93(1): 31-41, 2012

Habitat selection attributes of an avian community: a discriminant analysis investigation Birds, Colorado River valley, habitat selection, riparian. Ecological monographs 53(3): 263-290, 1983

Habitat selection and risk of predation: re-colonization by lynx had limited impact on habitat selection by roe deer. Plos One 8(9): E75469-E75469, 2014

Habitat selection in grasshoppers in typical steppe: relationship between habitat selection and horizontal structure. Wuyi Science Journal 14: 251-257, 1998

Sex-dependent habitat selection and genetic polymorphism. American Naturalist 141(3): 491-500, 1993