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Competition for territories does not explain allopaternal care in the tessellated darter
 

Summary: Competition for territories does not explain allopaternal
care in the tessellated darter
Miles B. Farmer & Suzanne H. Alonzo
Received: 26 September 2007 /Accepted: 4 April 2008 /Published online: 13 May 2008
# Springer Science + Business Media B.V. 2008
Abstract Extensive research has focused on under-
standing the evolution of parental care, with fishes
providing important model systems for understanding
patterns of variation within and between species.
Classic theory predicts that individuals will care for
offspring when the fitness benefits through increased
offspring survival and growth outweigh the cost to the
parents through decreased future reproductive oppor-
tunities. Yet, a puzzling observation not explained by
this basic theory is the fact that in some species
individuals defend and provision unrelated offspring
and thus exhibit alloparental care. The tessellated
darter, Etheostoma olmstedi, represents one of the
first known examples of allopaternal care in fishes. In
this species, males often clean and guard eggs

  

Source: Alonzo, Suzanne H. - Department of Ecology and Evolutionary Biology, Yale University

 

Collections: Environmental Sciences and Ecology; Biology and Medicine