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Titolo:
Effects of allocare-givers on fitness of infants and parents in callitrichid primates
Autore:
Bales, K; Dietz, J; Baker, A; Miller, K; Tardif, SD;
Indirizzi:
Kent State Univ, Dept Biol Sci, Kent, OH 44242 USA Kent State Univ Kent OH USA 44242 Univ, Dept Biol Sci, Kent, OH 44242 USA Univ Maryland, Dept Biol, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 Dept Biol, College Pk, MD 20742 USA Philadelphia Zool Gardens, Philadelphia, PA USA Philadelphia Zool GardensPhiladelphia PA USA dens, Philadelphia, PA USA
Titolo Testata:
FOLIA PRIMATOLOGICA
fascicolo: 1-2, volume: 71, anno: 2000,
pagine: 27 - 38
SICI:
0015-5713(200001/04)71:1-2<27:EOAOFO>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
MARMOSETS CALLITHRIX-JACCHUS; TAMARIN SAGUINUS-OEDIPUS; COTTON-TOP TAMARINS; GOLDEN LION TAMARINS; COMMUNAL-CARE PRIMATE; NEW-WORLD PRIMATES; REPRODUCTIVE STRATEGIES; LEONTOPITHECUS-ROSALIA; CARRYING BEHAVIOR; HELPING-BEHAVIOR;
Keywords:
cooperative breeding; allocare; marmoset; tamarin;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Tardif, SD Kent State Univ, Dept Biol Sci, Cunningham Hall, Kent, OH 44242USA Kent State Univ Cunningham Hall Kent OH USA 44242 OH 44242 USA
Citazione:
K. Bales et al., "Effects of allocare-givers on fitness of infants and parents in callitrichid primates", FOL PRIMAT, 71(1-2), 2000, pp. 27-38

Abstract

The effects of callitrichid primate helpers (allocare-givers other than aninfant's father) on the survival, reproduction or behavior of infants and parents are reviewed, using both published studies and data from free-ranging golden lion tamarins (Leontopithecus rosalia). Three lines of evidence suggest that helpers may increase their own inclusive fitness: (1)The numberof adult males acting as helpers in free-ranging groups is correlated withthe number of surviving infants in 3 callitrichid species. However, the lack of a negative correlation with number of infants dying suggests that activities other than direct infant care (e.g. territory defense) may be more important, especially in newly formed groups. (2) In 2 species, captive groups with helpers carry infants for longer periods of time than do groups without helpers. Whether such differences would translate into meaningful survival differences in free-ranging groups is unclear. (3) Helpers reduce theenergetic burden of parents by reducing the amount of time they spend transporting or provisioning infants in at least 4 species. Reproductive males are more likely than reproductive females to benefit from the presence of helpers, reducing their investment in infant care activities as the number of helpers in the group increases. In free-ranging golden lion tamarins, thereproductive tenure of males, but not females, increases with the number of helpers in the group, suggesting that a reduction in energetic investmentmay translate into increased survival. 'Decisions' made by helpers to participate in infant transport are weighed against competing needs for foraging, vigilance, territory defense and, in some cases, prospecting for breeding opportunities. Given this complexity, a sophisticated model may be required to answer the question of how helpers 'decide' to participate in infant care versus other activities. Copyright (C) 2000 S. Karger AG. Basel.

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Documento generato il 29/03/20 alle ore 15:24:50