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Testing Allsop and West's size at sex change invariant within a fish species: A spurious ratio or a useful group descriptor?

AuthorsLinde, Marta ; Palmer, Miquel
KeywordsSize at sex change
Teleost fish
Life-history invariants
Dimensionless analysis
Issue Date2008
PublisherBlackwell Publishing
CitationJournal of Evolutionary Biology 21(3): 914-917 (2008)
AbstractRecently, it has been suggested that sequential hermaphrodites, from a variety of taxa and a wide range of sizes, change sex at the same relative size. It is said that there exists an invariant (a constant ratio) for such a life trait. However, recent criticisms point out that these results could be a statistical artefact. It has been argued that the wider the range of x-axis values (from 2 mm to 1.5 m in the case of sex change), the higher the probability of identifying an invariant by chance. Here, the invariance of the size at sex change ratio is analysed within a single fish species for which the size of sex change varies within a range of only 6.5 cm. Our results support the invariant rule that fishes change sex when reaching 79% of their maximum size. © 2008 The Authors.
Identifiersdoi: 10.1111/j.1420-9101.2008.01508.x
issn: 1010-061X
Appears in Collections:(IMEDEA) Artículos
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