The importance of ecological and behavioural data in studies of hybridisation among marine fishes

Montanari, Stefano R., Hobbs, Jean-Paul A., Pratchett, Morgan S., and Van Herwerden, Lynne (2016) The importance of ecological and behavioural data in studies of hybridisation among marine fishes. Reviews in Fish Biology and Fisheries, 26 (2). pp. 181-198.

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Natural hybridisation is a widespread phenomenon, particularly well documented in terrestrial and freshwater ecosystems, where it has been ascribed substantial evolutionary and adaptive relevance. Hybridisation has received comparatively less attention in marine systems, though there has been a recent surge of reported marine hybrids, particularly among corals and fishes. This review summarises the current knowledge of hybridisation in marine fishes, with a focus on ecological and behavioural factors that may play a role in hybridisation processes. Rarity of one or both parental species within the hybrid zone, overlap in habitat use, dietary overlap and the breakdown in assortative mating appear to have a role in facilitating hybridisation. Despite this, most of the recent literature on marine fish hybridisation has a strong genetic focus, with little or no quantitative information about the ecological and behavioural factors that initiate or facilitate hybridisation. Future studies should attempt to gather ecological and behavioural data from hybrid zones, thus teasing out which processes are most relevant to overcoming pre-zygotic barriers to reproductive isolation. Not only will this advance our understanding of the adaptive and evolutionary relevance of hybridisation in marine fishes, but it will also provide unique insights into the maintenance of reproductive isolation and the process of speciation in the marine environment.

Item ID: 44136
Item Type: Article (Research - C1)
ISSN: 1573-5184
Keywords: diet, ecology, habitat, hybridisation, marine, rarity
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A version of this publication was included as Chapter 1 of the following PhD thesis: Montanari, Stefano R. (2018) Causes and consequences of natural hybridisation among coral reef butterflyfishes (Chaetodon: Chaetodontidae). PhD thesis, James Cook University, which is available Open Access in ResearchOnline@JCU. Please see the Related URLs for access.

Funders: AIMS@JCU (SRM)
Date Deposited: 27 Jul 2016 04:08
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310305 Marine and estuarine ecology (incl. marine ichthyology) @ 30%
31 BIOLOGICAL SCIENCES > 3109 Zoology > 310901 Animal behaviour @ 30%
31 BIOLOGICAL SCIENCES > 3104 Evolutionary biology > 310499 Evolutionary biology not elsewhere classified @ 40%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 100%
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