Habitat selectivity and reliance on live corals for Indo-Pacific hawkfishes (family: Cirrhitidae)

D.J. Coker, A.S. Hoey, Shaun Wilson, Martial Depczynski, N.A.J. Graham, J.P.A. Hobbs, Thomas Holmes, M.S. Pratchett

Research output: Contribution to journalArticle

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Abstract

© 2015 Coker et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Hawkfishes (family: Cirrhitidae) are small conspicuous reef predators that commonly perch on, or shelter within, the branches of coral colonies. This study examined habitat associations of hawkfishes, and explicitly tested whether hawkfishes associate with specific types of live coral. Live coral use and habitat selectivity of hawkfishes was explored at six locations from Chagos in the central Indian Ocean extending east to Fiji in the Pacific Ocean. A total of 529 hawkfishes from seven species were recorded across all locations with 63% of individuals observed perching on, or sheltering within, live coral colonies. Five species (all except Cirrhitus pinnulatus and Cirrhitichthys oxycephalus) associated with live coral habitats. Cirrhitichthys falco selected for species of Pocillopora while Paracirrhites arcatus and P. forsteri selected for both Pocillopora and Acropora, revealing that these habitats are used disproportionately more than expected based on the local cover of these coral genera. Habitat selection was consistent across geographic locations, and species of Pocillopora were the most frequently used and most consistently selected even though this coral genus never comprised more than 6% of the total coral cover at any of the locations. Across locations, Paracirrhites arcatus and P. forsteri were the most abundant species and variation in their abundance corresponded with local patterns of live coral cover and abundance of Pocilloporid corals, respectively. These findings demonstrate the link between small predatory fishes and live coral habitats adding to the growing body of literature highlighting that live corals (especially erect branching corals) are critically important for sustaining high abundance and diversity of fishes on coral reefs.
Original languageEnglish
Article numbere0138136
Pages (from-to)1-17
Number of pages17
JournalPLoS One
Volume10
Issue number11
DOIs
Publication statusPublished - 3 Nov 2015

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Anthozoa
Ecosystem
corals
habitats
Reefs
Fish
Cirrhitidae
Fishes
Fiji
Pacific Ocean
Perches
Coral Reefs
Indian Ocean
Geographic Locations
Acropora
Falco
Licensure
perch
habitat preferences
coral reefs

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Coker, D. J., Hoey, A. S., Wilson, S., Depczynski, M., Graham, N. A. J., Hobbs, J. P. A., ... Pratchett, M. S. (2015). Habitat selectivity and reliance on live corals for Indo-Pacific hawkfishes (family: Cirrhitidae). PLoS One, 10(11), 1-17. [e0138136]. https://doi.org/10.1371/journal.pone.0138136
Coker, D.J. ; Hoey, A.S. ; Wilson, Shaun ; Depczynski, Martial ; Graham, N.A.J. ; Hobbs, J.P.A. ; Holmes, Thomas ; Pratchett, M.S. / Habitat selectivity and reliance on live corals for Indo-Pacific hawkfishes (family: Cirrhitidae). In: PLoS One. 2015 ; Vol. 10, No. 11. pp. 1-17.
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Coker, DJ, Hoey, AS, Wilson, S, Depczynski, M, Graham, NAJ, Hobbs, JPA, Holmes, T & Pratchett, MS 2015, 'Habitat selectivity and reliance on live corals for Indo-Pacific hawkfishes (family: Cirrhitidae)' PLoS One, vol. 10, no. 11, e0138136, pp. 1-17. https://doi.org/10.1371/journal.pone.0138136

Habitat selectivity and reliance on live corals for Indo-Pacific hawkfishes (family: Cirrhitidae). / Coker, D.J.; Hoey, A.S.; Wilson, Shaun; Depczynski, Martial; Graham, N.A.J.; Hobbs, J.P.A.; Holmes, Thomas; Pratchett, M.S.

In: PLoS One, Vol. 10, No. 11, e0138136, 03.11.2015, p. 1-17.

Research output: Contribution to journalArticle

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T1 - Habitat selectivity and reliance on live corals for Indo-Pacific hawkfishes (family: Cirrhitidae)

AU - Coker, D.J.

AU - Hoey, A.S.

AU - Wilson, Shaun

AU - Depczynski, Martial

AU - Graham, N.A.J.

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AU - Holmes, Thomas

AU - Pratchett, M.S.

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N2 - © 2015 Coker et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Hawkfishes (family: Cirrhitidae) are small conspicuous reef predators that commonly perch on, or shelter within, the branches of coral colonies. This study examined habitat associations of hawkfishes, and explicitly tested whether hawkfishes associate with specific types of live coral. Live coral use and habitat selectivity of hawkfishes was explored at six locations from Chagos in the central Indian Ocean extending east to Fiji in the Pacific Ocean. A total of 529 hawkfishes from seven species were recorded across all locations with 63% of individuals observed perching on, or sheltering within, live coral colonies. Five species (all except Cirrhitus pinnulatus and Cirrhitichthys oxycephalus) associated with live coral habitats. Cirrhitichthys falco selected for species of Pocillopora while Paracirrhites arcatus and P. forsteri selected for both Pocillopora and Acropora, revealing that these habitats are used disproportionately more than expected based on the local cover of these coral genera. Habitat selection was consistent across geographic locations, and species of Pocillopora were the most frequently used and most consistently selected even though this coral genus never comprised more than 6% of the total coral cover at any of the locations. Across locations, Paracirrhites arcatus and P. forsteri were the most abundant species and variation in their abundance corresponded with local patterns of live coral cover and abundance of Pocilloporid corals, respectively. These findings demonstrate the link between small predatory fishes and live coral habitats adding to the growing body of literature highlighting that live corals (especially erect branching corals) are critically important for sustaining high abundance and diversity of fishes on coral reefs.

AB - © 2015 Coker et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Hawkfishes (family: Cirrhitidae) are small conspicuous reef predators that commonly perch on, or shelter within, the branches of coral colonies. This study examined habitat associations of hawkfishes, and explicitly tested whether hawkfishes associate with specific types of live coral. Live coral use and habitat selectivity of hawkfishes was explored at six locations from Chagos in the central Indian Ocean extending east to Fiji in the Pacific Ocean. A total of 529 hawkfishes from seven species were recorded across all locations with 63% of individuals observed perching on, or sheltering within, live coral colonies. Five species (all except Cirrhitus pinnulatus and Cirrhitichthys oxycephalus) associated with live coral habitats. Cirrhitichthys falco selected for species of Pocillopora while Paracirrhites arcatus and P. forsteri selected for both Pocillopora and Acropora, revealing that these habitats are used disproportionately more than expected based on the local cover of these coral genera. Habitat selection was consistent across geographic locations, and species of Pocillopora were the most frequently used and most consistently selected even though this coral genus never comprised more than 6% of the total coral cover at any of the locations. Across locations, Paracirrhites arcatus and P. forsteri were the most abundant species and variation in their abundance corresponded with local patterns of live coral cover and abundance of Pocilloporid corals, respectively. These findings demonstrate the link between small predatory fishes and live coral habitats adding to the growing body of literature highlighting that live corals (especially erect branching corals) are critically important for sustaining high abundance and diversity of fishes on coral reefs.

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