To feed or to breed: morphological constraints of mouthbrooding in coral reef cardinalfishes.

Handle URI:
http://hdl.handle.net/10754/562093
Title:
To feed or to breed: morphological constraints of mouthbrooding in coral reef cardinalfishes.
Authors:
Hoey, Andrew; Bellwood, David R.; Barnett, Adam M.
Abstract:
Functionally coupled biomechanical systems are widespread in nature and are viewed as major constraints on evolutionary diversification, yet there have been few attempts to explore the implications of performing multiple functions within a single anatomical structure. Paternally mouthbrooding cardinalfishes present an ideal system to investigate the constraints of functional coupling as the oral jaws of male fishes are directly responsible for both feeding and reproductive functions. To test the effects of (i) mouthbrooding on feeding and (ii) feeding on reproductive potential we compared the feeding apparatus between sexes of nine species of cardinalfish and compared brood characteristics among species from different trophic groups, respectively. Mouthbrooding was strongly associated with the morphology of the feeding apparatus in males. Male cardinalfishes possessed longer heads, snouts and jaws than female conspecifics irrespective of body size, trophic group or evolutionary history. Conversely, reproductive potential also appeared to be related to trophic morphology. Piscivorous cardinalfishes produced larger, but fewer eggs, and had smaller brood volumes than species from the two invertebrate feeding groups. These interrelationships suggest that feeding and reproduction in the mouth of cardinalfishes may be tightly coupled. If so this may, in part, have contributed to the limited morphological diversification exhibited by cardinalfishes.
KAUST Department:
Red Sea Research Center (RSRC)
Publisher:
The Royal Society
Journal:
Proceedings of the Royal Society B: Biological Sciences
Issue Date:
8-Feb-2012
DOI:
10.1098/rspb.2011.2679
PubMed ID:
22319124
PubMed Central ID:
PMC3350681
Type:
Article
ISSN:
14712954
Sponsors:
We thank M. Depczynski and F. Merida for field assistance; the staff of the Lizard Island Research Station for logistical support; and C. Fulton, J. Hoey, M. Hoogenboom and N. Konow for helpful discussions. Comments from two anonymous reviewers greatly improved the manuscript. Financial support was provided by the Australian Research Council. James Cook University animal experimentation ethics approval no. A650.
Additional Links:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350681
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorHoey, Andrewen
dc.contributor.authorBellwood, David R.en
dc.contributor.authorBarnett, Adam M.en
dc.date.accessioned2015-08-03T09:44:38Zen
dc.date.available2015-08-03T09:44:38Zen
dc.date.issued2012-02-08en
dc.identifier.issn14712954en
dc.identifier.pmid22319124en
dc.identifier.doi10.1098/rspb.2011.2679en
dc.identifier.urihttp://hdl.handle.net/10754/562093en
dc.description.abstractFunctionally coupled biomechanical systems are widespread in nature and are viewed as major constraints on evolutionary diversification, yet there have been few attempts to explore the implications of performing multiple functions within a single anatomical structure. Paternally mouthbrooding cardinalfishes present an ideal system to investigate the constraints of functional coupling as the oral jaws of male fishes are directly responsible for both feeding and reproductive functions. To test the effects of (i) mouthbrooding on feeding and (ii) feeding on reproductive potential we compared the feeding apparatus between sexes of nine species of cardinalfish and compared brood characteristics among species from different trophic groups, respectively. Mouthbrooding was strongly associated with the morphology of the feeding apparatus in males. Male cardinalfishes possessed longer heads, snouts and jaws than female conspecifics irrespective of body size, trophic group or evolutionary history. Conversely, reproductive potential also appeared to be related to trophic morphology. Piscivorous cardinalfishes produced larger, but fewer eggs, and had smaller brood volumes than species from the two invertebrate feeding groups. These interrelationships suggest that feeding and reproduction in the mouth of cardinalfishes may be tightly coupled. If so this may, in part, have contributed to the limited morphological diversification exhibited by cardinalfishes.en
dc.description.sponsorshipWe thank M. Depczynski and F. Merida for field assistance; the staff of the Lizard Island Research Station for logistical support; and C. Fulton, J. Hoey, M. Hoogenboom and N. Konow for helpful discussions. Comments from two anonymous reviewers greatly improved the manuscript. Financial support was provided by the Australian Research Council. James Cook University animal experimentation ethics approval no. A650.en
dc.publisherThe Royal Societyen
dc.relation.urlhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350681en
dc.titleTo feed or to breed: morphological constraints of mouthbrooding in coral reef cardinalfishes.en
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalProceedings of the Royal Society B: Biological Sciencesen
dc.identifier.pmcidPMC3350681en
kaust.authorHoey, Andrewen

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