| ecological divergence and habitat isolation between two migratory forms of japanese threespine stickleback (gasterosteus aculeatus). | when two closely related species migrate to divergent spawning sites, divergent use of spawning habitats can directly reduce heterospecific mating. furthermore, adaptations to divergent spawning habitats can promote speciation as a by-product of ecological divergence. here, we investigated habitat isolation and ecological divergence between two anadromous forms of threespine stickleback (gasterosteus aculeatus), the japan sea and pacific ocean forms. in several coastal regions of eastern hokkaid ... | 2010 | 20456572 |
| speciation in ninespine stickleback: reproductive isolation and phenotypic divergence among cryptic species of japanese ninespine stickleback. | although similar patterns of phenotypic diversification are often observed in phylogenetically independent lineages, differences in the magnitude and direction of phenotypic divergence have been also observed among independent lineages, even when exposed to the same ecological gradients. the stickleback family is a good model with which to explore the ecological and genetic basis of parallel and nonparallel patterns of phenotypic evolution, because there are a variety of populations and species ... | 2013 | 23663028 |
| sea-run migratory behaviour in the japan sea form of three-spined stickleback gasterosteus aculeatus in the tidal pool of eastern hokkaido island, japan. | juveniles in the japan sea form of three-spined stickleback gasterosteus aculeatus collected from a tidal pool in eastern hokkaido island, japan, had a unimodal standard length (l(s)) frequency distribution in each period, ranging from 11.9 to 31.6 mm, and those of sea-run migrating individuals collected from the outlet of this tidal pool ranged from 17.0 to 36.0 mm, suggesting juveniles of this form would migrate towards the sea when they reached >17.0 mm. in general linear models (glm) for tes ... | 2009 | 20738529 |