Heterosis in the second and third generation affects litter size in a crossbreed mink (Neovison vison) population
| Autor: | Cino Pertoldi, Vivi Hunnicke Nielsen, Janne Pia Thirstrup, Peter Stein Larsen |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
maternal effect
Litter (animal) education.field_of_study biology Heterosis Ecology Population Maternal effect biology.organism_classification Crossbreed color types General Biochemistry Genetics and Molecular Biology Neovison Animal science environmental variation lcsh:Biology (General) biology.animal Inbreeding depression Mink General Agricultural and Biological Sciences education non-maternal effects lcsh:QH301-705.5 reproductive and urinary physiology |
| Zdroj: | Thirstrup, J P, Pertoldi, C, Larsen, P F & Nielsen, V H 2014, ' Heterosis in the second and third generation affects litter size in a crossbreed mink (Neovison vison) population ', Archives of Biological Sciences, vol. 66, no. 3, pp. 1097-1103 . https://doi.org/10.2298/ABS1403097T Thirstrup, J P, Pertoldi, C, Larsen, P F & Nielsen, V H 2014, ' Heterosis in the second and third generation affects litter size in a crossbreed mink ( Neovison vison ) population ', Archives of Biological Sciences, vol. 66, no. 3, pp. 1097-1103 . https://doi.org/10.2298/ABS1403097T Archives of Biological Sciences, Vol 66, Iss 3, Pp 1097-1103 (2014) |
| ISSN: | 1821-4339 0354-4664 |
| Popis: | Litter sizes in a cross between Brown and Black mink color types were observed through six generations. Litter size was significantly affected by yearly environmental variations. After adjusting for year effects, we found significant increases in litter size in the second and third generations (F2 and F3) after crossing. Thereafter, in the following generations, litter size dropped to a level comparable to the mean litter size of the midparent. Increased litter size in F2 compared to F1 indicated that maternal effects influenced litter size more than non-maternal effects. The heterosis was mainly caused by an increase in litter size compared to the Black parental line. This indicates that the Black line was affected by inbreeding depression prior to crossing. We also found that two-year old F1 females had significantly more offspring compared to one-year old F1 females. |
| Databáze: | OpenAIRE |
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