Costs and benefits of post-weaning associations in mountain goats
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Abstract
To better understand the potential costs and benefits of prolonged parental care in gregarious species, we studied post-weaning associations in a marked population of mountain goats (Oreamnos americanus) monitored for 22 years. We calculated the occurrence and frequency of associations involving 1- and 2-year-old juveniles. We investigated (1) the influence of maternal characteristics and population size on the formation of post-weaning associations, (2) the short-term costs of associations on maternal reproductive success, and (3) the short-term benefits of associations on life-history traits of juveniles. We found that barren mothers associated more frequently with 1-year-olds than summer yeld and lactating mothers. Associations with 2-year-olds tended to increase the probability that a mother would be barren the following year. Post-weaning associations did not influence the body mass of newborn kids nor the body mass and survival of juveniles. We discuss how benefits for associated juveniles may appear later in life.
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Costs and benefits of post-weaning associations in mountain goats
In: BehaviourSearch for other papers by Karina Charest Castro in
Current site
Google Scholar
PubMed
, Current affiliation: Environment and Climate Change Canada, 1125 Colonel By Drive, Ottawa, ON, Canada K1S 5B6
Search for other papers by Mathieu Leblond in
Current site
Google Scholar
PubMed
Search for other papers by Steeve D. Côté in
Current site
Google Scholar
PubMed
Abstract
To better understand the potential costs and benefits of prolonged parental care in gregarious species, we studied post-weaning associations in a marked population of mountain goats (Oreamnos americanus) monitored for 22 years. We calculated the occurrence and frequency of associations involving 1- and 2-year-old juveniles. We investigated (1) the influence of maternal characteristics and population size on the formation of post-weaning associations, (2) the short-term costs of associations on maternal reproductive success, and (3) the short-term benefits of associations on life-history traits of juveniles. We found that barren mothers associated more frequently with 1-year-olds than summer yeld and lactating mothers. Associations with 2-year-olds tended to increase the probability that a mother would be barren the following year. Post-weaning associations did not influence the body mass of newborn kids nor the body mass and survival of juveniles. We discuss how benefits for associated juveniles may appear later in life.
| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 971 | 208 | 14 |
| Full Text Views | 168 | 1 | 0 |
| PDF Views & Downloads | 51 | 0 | 0 |
