Change search
ReferencesLink to record
Permanent link

Direct link
Parasitic spawning in sand gobies: an experimental assessment of nest-opening size, sneaker male cues, paternity and filial cannibalism.
Stockholm University, Faculty of Science, Department of Zoology. Ekologi.
Stockholm University, Faculty of Science, Department of Zoology. Ekologi.
2007 (English)In: Behavioral Ecology, Vol. 18, 410-419 p.Article in journal (Refereed) Published
Abstract [en]

Sneaking is common in nest-building fish with paternal care, but the role of nest-opening size in protecting against entry by sneaker males has never been tested before. Using the sand goby (Pomatoschistus minutus), a fish with exclusive paternal care, experimental manipulations of nest openings provided no support for the hypothesis that nest openings serve as physical or visual defense or that sneaker males prefer to parasitize nests with wide openings. Female mating preference was also not influenced by nest-opening size. However, female courtship behavior and visibility were important cues for sneaker males. Most sneak entries occurred when the nest holder was occupied with courtship, chasing another sneaker male or nest building. In half the cases of observed sneak entry, the sneaker male fertilized eggs, also when sneaking only occurred before spawning. Sneak entry and its duration were good estimates of stolen paternity, but neither sneak entries nor degree of fertilizations were correlated with filial cannibalistic behavior. Testes size did not explain parasitic spawning success in replicates with genetically determined sneaking. However, all sneaker males without breeding coloration had huge testes and small sperm duct glands, whereas nest-holding males had small testes and large sperm duct glands, and sneaker males with breeding coloration were intermediate.

Place, publisher, year, edition, pages
2007. Vol. 18, 410-419 p.
National Category
URN: urn:nbn:se:su:diva-19946DOI: doi:10.1093/beheco/arl098ISI: 000244658100019OAI: diva2:186471
Available from: 2007-11-20 Created: 2007-11-20 Last updated: 2011-01-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Svensson, Ola
By organisation
Department of Zoology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 13 hits
ReferencesLink to record
Permanent link

Direct link