Reproductive output and duration of the pelagic larval stage determine seascape-wide connectivity of marine populations

Treml, Eric A, Roberts, Jason J, Chao, Yi, Halpin, Patrick N, Possingham, Hugh P and Riginos, Cynthia 2012, Reproductive output and duration of the pelagic larval stage determine seascape-wide connectivity of marine populations, Integrative and comparative biology, vol. 52, no. 4, pp. 525-537, doi: 10.1093/icb/ics101.

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Title Reproductive output and duration of the pelagic larval stage determine seascape-wide connectivity of marine populations
Author(s) Treml, Eric AORCID iD for Treml, Eric A
Roberts, Jason J
Chao, Yi
Halpin, Patrick N
Possingham, Hugh P
Riginos, Cynthia
Journal name Integrative and comparative biology
Volume number 52
Issue number 4
Start page 525
End page 537
Total pages 13
Publisher Oxford University Press
Place of publication Oxford, Eng.
Publication date 2012-10-01
ISSN 1540-7063
Keyword(s) animals
models, biological
oceans and seas
science & technology
life sciences & biomedicine
Summary Connectivity among marine populations is critical for persistence of metapopulations, coping with climate change, and determining the geographic distribution of species. The influence of pelagic larval duration (PLD) on connectivity has been studied extensively, but relatively little is known about the influence of other biological parameters, such as the survival and behavior of larvae, and the fecundity of adults, on population connectivity. Furthermore, the interaction between the seascape (habitat structure and currents) and these biological parameters is unclear. We explore these interactions using a biophysical model of larval dispersal across the Indo-Pacific. We describe an approach that quantifies geographic patterns of connectivity from demographically relevant to evolutionarily significant levels across a range of species. We predict that at least 95% of larval settlement occurs within 155 km of the source population and within 13 days irrespective of the species' life history, yet long-distant connections remain likely. Self-recruitment is primarily driven by the local oceanography, larval mortality, and the larval precompetency period, whereas broad-scale connectivity is strongly influenced by reproductive output (abundance and fecundity of adults) and the length of PLD. The networks we have created are geographically explicit models of marine connectivity that define dispersal corridors, barriers, and the emergent structure of marine populations. These models provide hypotheses for empirical testing.
Language eng
DOI 10.1093/icb/ics101
Field of Research 0608 Zoology
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2012, The Author
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Document type: Journal Article
Collection: School of Life and Environmental Sciences
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