Results 31 to 40 of about 134,297 (295)

The causes and consequences of inbreeding avoidance and tolerance in cooperatively breeding vertebrates [PDF]

open access: yes, 2017
Cooperative breeders provide a particularly interesting scenario for studying inbreeding. Such populations are viscous due to delayed dispersal and short dispersal distances, resulting in the build-up of relatives in the local population. This leads to a
Aranzamendi   +139 more
core   +2 more sources

Relationships Between Habitat and Snag Characteristics and the Reproductive Success of the Brown-headed Nuthatch (Sitta pusilla) in Eastern Texas. [PDF]

open access: yes, 2004
Habitat use and reproductive success of the Brown-headed Nuthatch (Sitta pusilla Latham) were studied in East Texas during the 2001-2002 breeding seasons. We compared nest cavity selection at used and randomly selected non-used areas.
Burt, Brent   +3 more
core   +2 more sources

Helpers compensate for age‐related declines in parental care and offspring survival in a cooperatively breeding bird

open access: yesEvolution Letters, 2021
Offspring from elderly parents often have lower survival due to parental senescence. In cooperatively breeding species, where offspring care is shared between breeders and helpers, the alloparental care provided by helpers is predicted to mitigate the ...
Martijn Hammers   +7 more
doaj   +1 more source

Commodity-specific punishment for experimentally induced defection in cooperatively breeding fish [PDF]

open access: yesRoyal Society Open Science, 2020
Coercion is an important but underrated component in the evolution of cooperative behaviour. According to the pay-to-stay hypothesis of cooperative breeding, subordinates trade alloparental care for the concession to stay in the group. Punishment of idle
Jan Naef, Michael Taborsky
doaj   +1 more source

Analysis of Seed Potato Systems in Ethiopia [PDF]

open access: yes, 2010
This study aimed to analyze the seed potato systems in Ethiopia, identify constraints and prioritize improvement options, combining desk research, rapid appraisal and formal surveys, expert elicitation, field observations and local knowledge. In Ethiopia,
Hirpa, A.   +6 more
core   +1 more source

Of apples and oranges? The evolution of “monogamy” in non-human primates [PDF]

open access: yes, 2020
Behavioral ecologists, evolutionary biologists, and anthropologists have been long fascinated by the existence of “monogamy” in the animal kingdom.
Di Fore, Anthony   +2 more
core   +2 more sources

The sentinel behaviour of Arabian babbler floaters [PDF]

open access: yesRoyal Society Open Science, 2017
The sentinel behaviour of 38 Arabian babbler adult floaters, who lived alone within a territory belonging to a foreign group, was studied and compared with their own sentinel behaviour in the past, when they were group members.
Roni Ostreiher, Aviad Heifetz
doaj   +1 more source

Production of homeobox A10 gene transgenic pigs by somatic cell nuclear transfer

open access: yesJournal of Integrative Agriculture, 2019
Homeobox A10 (Hoxa10) gene is one of the most important candidate genes associated with the reproductive performance of humans and mice. Overexpression of Hoxa10 in mouse endometrium can increase litter size.
Qian XIAO   +9 more
doaj   +1 more source

Expression analysis of the porcine Homeobox A11 gene and its association with litter size in Large White pigs

open access: yesCzech Journal of Animal Science, 2016
The homeobox A11 (HOXA11) gene, a well-known transcriptional regulator, plays a critical role in normal development of the uterus. In this study, the porcine HOXA11 gene, including its promoter region, was cloned and sequenced (GenBank Accession No ...
R. Lin, H. Jia, S. Chen, S. Zhao
doaj   +1 more source

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