The ontogeny of home ranges: evidence from coral reef fishes

Welsh, J.Q., Goatley, C.H.R., and Bellwood, D.R. (2013) The ontogeny of home ranges: evidence from coral reef fishes. Proceedings of the Royal Society of London Series B, Biological Sciences, 280 (1773). pp. 1-7.

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Abstract

The concept of home ranges is fundamental to ecology. Numerous studies have quantified how home ranges scale with body size across taxa. However, these relationships are not always applicable intraspecifically. Here, we describe how the home range of an important group of reef fish, the parrotfishes, scales with body mass. With masses spanning five orders of magnitude, from the early postsettlement stage through to adulthood, we find no evidence of a response to predation risk, dietary shifts or sex change on home range expansion rates. Instead, we document a distinct ontogenetic shift in home range expansion with sexual maturity. Juvenile parrotfishes displayed rapid home range growth until reaching approximately 100–150 mm length. Thereafter, the relationship between home range and mass broke down. This shift reflected changes in colour patterns, social status and reproductive behaviour associated with the transition to adult stages. While there is a clear relationship between body mass and home ranges among adult individuals of different species, it does not appear to be applicable to size changes within species. Ontogenetic changes in parrotfishes do not follow expected mass–area scaling relationships.

Item ID: 30529
Item Type: Article (Refereed Research - C1)
Keywords: home range, ecosystem function, coral reefs, ontogeny, parrotfish
ISSN: 1471-2954
Funders: Australian Research Council (ARC)
Date Deposited: 09 Dec 2013 04:14
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060201 Behavioural Ecology @ 50%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060202 Community Ecology (excl Invasive Species Ecology) @ 50%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830199 Fisheries - Aquaculture not elsewhere classified @ 70%
90 COMMERCIAL SERVICES AND TOURISM > 9098 Environmentally Sustainable Commercial Services and Tourism > 909899 Environmentally Sustainable Commercial Services and Tourism not elsewhere classified @ 30%
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