Repeatability and heritability of behavioural types in a social cichlid

Chervet, Neomie; Zöttl, Markus; Schürch, Roger; Taborsky, Michael; Heg, Dik (2011). Repeatability and heritability of behavioural types in a social cichlid. International Journal of Evolutionary Biology, 2011(ID 321729), p. 321729. London: Hindawi 10.4061/2011/321729

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Aim. The quantitative genetics underlying correlated behavioural traits (‘‘animal personality’’) have hitherto been studied mainly in domesticated animals. Here we report the repeatability ( ) and heritability ( ) of behavioural types in the highly social cichlid fish Neolamprologus pulcher. Methods. We tested 1779 individuals repeatedly and calculated the of behavioural types by variance components estimation (GLMM REML), using 1327 offspring from 162 broods from 74 pairs. Results. Repeatability of behavioural types was significant and considerable (0.546), but declined from 0.83 between tests conducted on the same day, to 0.19 on tests conducted up to 1201 days apart. All estimates were significant but low (e.g., pair identity SE). Additionally, we found significant variation between broods nested within the parent(s), but these were not related to several environmental factors tested. Conclusions. We conclude that despite a considerable , in this cichlid species is low, and variability in behavioural type appears to be strongly affected by other (non)genetic effects.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Behavioural Ecology

UniBE Contributor:

Chervet, Noémie; Zöttl, Markus; Schürch, Roger; Taborsky, Michael and Heg, Dierik Hans

Subjects:

500 Science > 590 Animals (Zoology)

ISSN:

2090-8032

Publisher:

Hindawi

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:27

Last Modified:

13 Dec 2014 07:50

Publisher DOI:

10.4061/2011/321729

PubMed ID:

21716729

BORIS DOI:

10.7892/boris.10040

URI:

https://boris.unibe.ch/id/eprint/10040 (FactScience: 215868)

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