Relationship tenure differentially influences pair bond behavior in male and female socially monogamous titi monkeys (Callicebus cupreus)
| Autor: | Logan E. Savidge, Karen L. Bales, Emily S. Rothwell, Sarah B. Carp, Sally P. Mendoza |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Male Time Factors Titi Titi monkey Relationship maintenance Biology 010603 evolutionary biology 01 natural sciences Callicebus Article Preference test Animals 0501 psychology and cognitive sciences 050102 behavioral science & comparative psychology Social Behavior Ecology Evolution Behavior and Systematics Pair Bond Sex Characteristics 05 social sciences biology.organism_classification Pair bond Aggression Behavioral test Animal Science and Zoology Female Scan sampling Female partner Demography |
| Zdroj: | Am J Primatol |
| Popis: | Pair bonded primates have uniquely enduring relationships and partners engage in a suite of behaviors to maintain these close bonds. In titi monkeys, pair bond formation has been extensively studied, but changes across relationship tenure remain unstudied. We evaluated differences in behavioral indicators of pair bonding in newly-formed (~6 mo. paired, n = 9) compared to well-established pairs (avg. 3 yr. paired, n = 8) of titi monkeys (Callicebus cupreus) as well as sex differences within the pairs. We hypothesized that overall males would contribute more to maintenance than females, but that the pattern of maintenance behaviors would differ between newly-formed and well-established pairs. Each titi monkey (N = 34) participated in a partner preference test (PPT) where the subject was placed in a middle test cage with grated windows separating the subject from the partner on one side and an opposite sex stranger on the other side. During this 150-minute behavioral test, we quantified four key behaviors: time in proximity to the partner or stranger as well as aggressive displays toward the partner or stranger. Overall, we found different behavioral profiles representing newly-formed and well-established pair bond relationships in titi monkeys and male-biased relationship maintenance. Males spent approximately 40% of their time in the PPT maintaining proximity to the female partner, regardless of relationship tenure. Males from well-established bonds spent less time (14%) near the female stranger compared to males from newly-formed bonds (21%) at the trend level. In contrast, females from well-established bonds spent less (23%) time near the male partner in the PPT compared to females from newly-formed bonds (47%). Aggressive displays were more frequent in newly-formed bonds compared to well-established bonds, especially for females. Scan sampling for homecage affiliation showed that newly-formed pairs were more likely to be found tail-twining than well-established pairs. |
| Databáze: | OpenAIRE |
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