Partial migration: growth varies between resident and migratory fish

Biology Letters
Bronwyn M GillandersQifeng Ye

Abstract

Partial migration occurs in many taxa and ecosystems and may confer survival benefits. Here, we use otolith chemistry data to determine whether fish from a large estuarine system were resident or migratory, and then examine whether contingents display differences in modelled growth based on changes in width of otolith growth increments. Sixty-three per cent of fish were resident based on Ba : Ca of otoliths, with the remainder categorized as migratory, with both contingents distributed across most age/size classes and both sexes, suggesting population-level bet hedging. Migrant fish were in slightly better condition than resident fish based on Fulton's K condition index. Migration type (resident versus migratory) was 56 times more likely to explain variation in growth than a model just incorporating year- and age-related growth trends. While average growth only varied slightly between resident and migratory fish, year-to-year variation was significant. Such dynamism in growth rates likely drives persistence of both life-history types. The complex relationships in growth between contingents suggest that management of species exhibiting partial migration is challenging, especially in a world subject to a changing climate.

Associated Datasets

References

Sep 25, 2008·Proceedings. Biological Sciences·Lars-Anders Hansson, Samuel Hylander
Jan 19, 2010·Proceedings of the National Academy of Sciences of the United States of America·Carsten EgevangJanet R D Silk
Jun 4, 2010·Nature·Daniel E SchindlerMichael S Webster
Oct 15, 2010·Biology Letters·Peter T StevickCarole Carlson
Jul 19, 2012·Journal of Fish Biology·B B ChapmanC Brönmark

❮ Previous
Next ❯

Citations

Aug 8, 2015·Oecologia·Zoë A DoubledayBronwyn M Gillanders
Jun 28, 2016·Marine Environmental Research·Ashley M FowlerJohn Stewart
Aug 10, 2019·Journal of Fish Biology·Ana C G MaiJoão P Vieira
Nov 9, 2019·Journal of Biological Dynamics·Hidekazu YoshiokaMasayuki Fujihara
Aug 29, 2019·Proceedings. Biological Sciences·Emily K FobertStephen E Swearer
Oct 19, 2019·Ecology and Evolution·Grégoire Saboret, Travis Ingram
Jan 11, 2019·PeerJ·Dominique AlòThomas F Turner
Jun 24, 2021·The Journal of Animal Ecology·Joshua S BarrowJohn R Morrongiello

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Migration

Cell migration is involved in a variety of physiological and pathological processes such as embryonic development, cancer metastasis, blood vessel formation and remoulding, tissue regeneration, immune surveillance and inflammation. Here is the latest research.

Related Papers

The Annals of Otology, Rhinology, and Laryngology
L B Jongkees
The American Journal of Dermatopathology
A Bernard Ackerman
Nature Reviews. Genetics
Tanita Casci
© 2021 Meta ULC. All rights reserved