Data from: Divergence of ovipositor length and egg shape in a brood parasitic bitterling fish through the use of different mussel hosts
Kitamura, Jyun-ichi, Mie Prefectural Museum, Tsu, Mie, Japan
Nakajima, Jun, Fukuoka Institute of Health and Environmental Sciences
Sota, Teiji, Kyoto University
Published Jan 04, 2012 on Dryad.
Cite this dataset
Kitamura, Jyun-ichi; Nagata, Nobuaki; Nakajima, Jun; Sota, Teiji (2012). Data from: Divergence of ovipositor length and egg shape in a brood parasitic bitterling fish through the use of different mussel hosts [Dataset]. Dryad. https://doi.org/10.5061/dryad.qh1n088f
Bitterling fishes deposit their eggs on the gills of living mussels using a long ovipositor. We examined whether ovipositor length and egg shape correlated with differences in host mussel species in the family Unionidae among populations of the tabira bitterling (Acheilognathus tabira) in Japan. Bitterling populations that use mussels in the sub-family Anodontinae possessed longer ovipositors and more elongated eggs than those using mussels of Unioninae, as expected from the difference in host size between the sub-families (anodontine mussels are larger than unionine mussels). Based on a robust phylogeny of A. tabira populations, we demonstrated that the evolution of both ovipositor length and egg shape were correlated with host differences, but not with each other, suggesting that these traits have been selected for independently. Our study demonstrates how adaptive traits for brood parasitism may diverge with host shift due to different host availability and/or interspecific competition for hosts.
Sample locality, subspecies, habitat type, host mussel, and dimensions of females and mature eggs for Acheilognathus tabira. All data were collected from field-collected samples.