Large females connect Atlantic cod spawning sites
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, more
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| Authors | | Top |
- Olsen, E.M.
- Karlsen, Ø.
- Skjæraasen, J.E.
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| Abstract |
The decline of the size of individuals within a species, from trees to fishes, is a human impact that we often overlook. However, the loss of large individuals can have population- and ecosystem-level impacts. Olsen et al. looked at historically large female Atlantic cod, some of which still remain in the waters off Norway, and found that they make longer, more complex, movements than smaller females. Such movements not only benefit the breeding females, but also connect populations and habitats in a way that a population with only smaller females would be unable to do. —Sacha Vignieri. |
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