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 rep...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.466.5534 2023-05-15T18:41:13+02:00 Maintenance of two genetic entities by habitat selection Thierry De Meeûs Michael E. Hochberg The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.466.5534 http://gemi.mpl.ird.fr/SiteSGASS/SiteTDM/Publications/EVOECO95.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.466.5534 http://gemi.mpl.ird.fr/SiteSGASS/SiteTDM/Publications/EVOECO95.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://gemi.mpl.ird.fr/SiteSGASS/SiteTDM/Publications/EVOECO95.pdf Selected polymorphism habitat selection genetic isolation text ftciteseerx 2016-01-08T06:57:27Z 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. Text Turbot Copepods Unknown |
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Open Polar |
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English |
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Selected polymorphism habitat selection genetic isolation |
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Selected polymorphism habitat selection genetic isolation Thierry De Meeûs Michael E. Hochberg Maintenance of two genetic entities by habitat selection |
topic_facet |
Selected polymorphism habitat selection genetic isolation |
description |
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. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Thierry De Meeûs Michael E. Hochberg |
author_facet |
Thierry De Meeûs Michael E. Hochberg |
author_sort |
Thierry De Meeûs |
title |
Maintenance of two genetic entities by habitat selection |
title_short |
Maintenance of two genetic entities by habitat selection |
title_full |
Maintenance of two genetic entities by habitat selection |
title_fullStr |
Maintenance of two genetic entities by habitat selection |
title_full_unstemmed |
Maintenance of two genetic entities by habitat selection |
title_sort |
maintenance of two genetic entities by habitat selection |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.466.5534 http://gemi.mpl.ird.fr/SiteSGASS/SiteTDM/Publications/EVOECO95.pdf |
genre |
Turbot Copepods |
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Turbot Copepods |
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http://gemi.mpl.ird.fr/SiteSGASS/SiteTDM/Publications/EVOECO95.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.466.5534 http://gemi.mpl.ird.fr/SiteSGASS/SiteTDM/Publications/EVOECO95.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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