A test of male infanticide as a reproductive tactic in a cichlid fish

Published on Mar 8, 2017in Royal Society Open Science2.647
· DOI :10.1098/RSOS.160891
Shagun Jindal5
Estimated H-index: 5
(McMaster University),
Aneesh P. H. Bose9
Estimated H-index: 9
(McMaster University)
+ 1 AuthorsSigal Balshine39
Estimated H-index: 39
(McMaster University)
Sources
Abstract
Infanticide and offspring cannibalism are taxonomically widespread phenomena. In some group-living species, a new dominant individual taking over a group can benefit from infanticide if doing so in...
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Summary Parental care is costly for animal parents [ 1 , 2 , 3 ], who often desert, abort, or kill their offspring and sometimes even eat them—so-called filial cannibalism [ 1 , 4 ]. A primary adaptive hypothesis for filial cannibalism centers on the expected nutritional benefits from eating offspring (the energy-based [EB] hypothesis [ 5 , 6 , 7 ]). However, many empirical studies are inconsistent with the EB hypothesis [ 8 , 9 ]. One notable case is total filial cannibalism observed in some fi...
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Although the consumption of one's own offspring is often viewed as maladaptive, under some circumstances this behaviour can be a beneficial way to terminate parental care. When the costs of providing care are extremely high or the benefits of performing care are especially low, parents will sometimes cannibalize their own young, which is called filial cannibalism. This behaviour enables them to cease to care while recouping lost energy. Most studies examining the link between the cost/benefit ra...
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