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Does fish larval dispersal differ between high and low latitudes?

journal contribution
posted on 2023-05-17, 19:24 authored by Jeffrey LeisJeffrey Leis, Caselle, JE, Bradbury, IR, Kristiansen, T, Llopiz, JK, Miller, MJ, O'Connor, MI, Paris, CB, Shanks, AL, Sogard, SM, Swearer, SE, Treml, EA, Vetter, RD, Warner, RR
Several factors lead to expectations that the scale of larval dispersal and population connectivity of marine animals differs with latitude. We examine this expectation for demersal shorefishes, including relevant mechanisms, assumptions and evidence. We explore latitudinal differences in (i) biological (e.g. species composition, spawning mode, pelagic larval duration, PLD), (ii) physical (e.g. water movement, habitat fragmentation), and (iii) biophysical factors (primarily temperature, which could strongly affect development, swimming ability or feeding). Latitudinal differences exist in taxonomic composition, habitat fragmentation, temperature and larval swimming, and each difference could influence larval dispersal. Nevertheless, clear evidence for latitudinal differences in larval dispersal at the level of broad faunas is lacking. For example, PLD is strongly influenced by taxon, habitat and geographical region, but no independent latitudinal trend is present in published PLD values. Any trends in larval dispersal may be obscured by a lack of appropriate information, or use of ‘off the shelf’ information that is biased with regard to the species assemblages in areas of concern. Biases may also be introduced from latitudinal differences in taxa or spawning modes as well as limited latitudinal sampling. We suggest research to make progress on the question of latitudinal trends in larval dispersal.

History

Publication title

Proceedings of the Royal Society of London B: Biological Sciences

Volume

280

Issue

1759

Article number

20130327

Number

20130327

Pagination

1-9

ISSN

0962-8452

Department/School

Institute for Marine and Antarctic Studies

Publisher

Royal Soc London

Place of publication

6 Carlton House Terrace, London, England, Sw1Y 5Ag

Rights statement

Copyright 2013 The Authors

Repository Status

  • Restricted

Socio-economic Objectives

Marine biodiversity

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