Male Pygmy Sculpins (Cottus pygmaeus) were found to abandon nests that contained clutches of eggs, presumably establishing new nests elsewhere. These abandoned nests were readily occupied by new males (allopaternal males) that continued paternal care of existing clutches and usually acquired new clutches. Significantly more eggs were lost to cannibalism when new males acquired nests than when the original males stayed with their own brood. The size of males that abandoned nests did not differ from that of allopaternal males. Female preference for males with nests that already contain eggs may be the selective force for the occurrence of allopaternal care in this species.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 2000 • No. 1