NDLI: Brood defense and filial cannibalism in the spottail darter (Etheostoma squamiceps): the effects of parental status and prior experience

Content Provider	Springer Nature Link
Author	Bandoli, James H.
Copyright Year	2001
Abstract	Male spottail darters (Etheostoma squamiceps) defend nest sites in which females deposit eggs over the course of several weeks. In laboratory experiments, I tested three predictions of the hypothesis that the presence of eggs increases the value of a nest site to male spottail darters: (1) males should preferentially defend nests with eggs over empty nests, and males that sired the eggs should (2) spend more time defending them and (3) consume less of their broods than should alloparent males. Parent males were tested using eggs they were guarding in the field; alloparents included males that were not defending eggs immediately prior to the experiment (inexperienced), and males that were defending eggs in the field when captured but were given eggs sired by a different male (experienced). In choice experiments in which males were offered nest sites differing only in the presence of eggs, males preferred to defend nest sites with eggs regardless of parental status. Parent males spent significantly more time defending eggs and consumed less of their broods than did inexperienced alloparent males. Experienced alloparent males were similar to parent males in brood defense but had levels of filial cannibalism similar to inexperienced males, suggesting that prior experience may influence brood defense but not egg consumption.
Starting Page	222
Ending Page	226
Page Count	5
File Format	PDF
ISSN	03405443
Journal	Behavioral Ecology and Sociobiology
Volume Number	51
Issue Number	3
e-ISSN	14320762
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-12-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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