Demographic and life history characteristics influence the cytonuclear composition of mosquitofish populations
Links
- More information: Publisher Index Page
- Download citation as: RIS | Dublin Core
Abstract
Experimental laboratory crosses and population experiments reveal significant differences in individual life-history traits and population demography between two related species of mosquitofish, Gambusia affinis and G. holbrooki. With respect to life-history traits, progeny from G. holbrooki exhibit larger size at birth and earlier age at sexual maturity than do progeny from G. affinis parents. With respect to demography, populations of G. holbrooki exhibit higher recruitment and carrying capacity and loser overwinter mortality than do populations of G. affinis. These differences help t explain the dramatic changes in cytonuclear genotype frequency observed in replicated experimental hybrid populations of Gambusia monitored over 52 weeks. These experimental results are interpreted in the context of introgression patterns previously studied indirectly from distributions of cytonuclear genotypes in a natural mosquitofish hybrid zone.
| Publication type | Book chapter |
|---|---|
| Publication Subtype | Book Chapter |
| Title | Demographic and life history characteristics influence the cytonuclear composition of mosquitofish populations |
| Chapter | 5.5 |
| ISBN | 978-0-412-49370-6 |
| Year Published | 1994 |
| Language | English |
| Publisher | Chapman and Hall |
| Publisher location | London, UK |
| Contributing office(s) | Alaska Science Center |
| Description | 11 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Monograph |
| Larger Work Title | Genetics and evolution of aquatic organisms |
| First page | 280 |
| Last page | 290 |
| Google Analytic Metrics | Metrics page |