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Titolo:
INFANT SURVIVAL AND NUMBER OF HELPERS IN CAPTIVE GROUPS OF COMMON MARMOSETS (CALLITHRIX-JACCHUS)
Autore:
ROTHE H; KOENIG A; DARMS K;
Indirizzi:
UNIV GOTTINGEN,INST ANTHROPOL,BURGERSTR 50 W-3400 GOTTINGEN GERMANY
Titolo Testata:
American journal of primatology
fascicolo: 2, volume: 30, anno: 1993,
pagine: 131 - 137
SICI:
0275-2565(1993)30:2<131:ISANOH>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
TAMARINS SAGUINUS-OEDIPUS; COTTON-TOP TAMARIN; SOCIAL-ORGANIZATION; CALLITRICHIDAE; COLONY;
Keywords:
GROUP SIZE; NUMBER OF NONREPRODUCTIVE HELPERS; CALLITRICHIDS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
H. Rothe et al., "INFANT SURVIVAL AND NUMBER OF HELPERS IN CAPTIVE GROUPS OF COMMON MARMOSETS (CALLITHRIX-JACCHUS)", American journal of primatology, 30(2), 1993, pp. 131-137

Abstract

In a colony of captive marmoset monkeys (Callithrix jacchus), the survival rate of infants up to the age of 90 days after birth was analyzed with special reference to the number of members in the group. The number of group members (newborns excluded) varied between two (parents only) and 18 (parents plus non-reproductive helpers); the number of adult group members varied between two and 15. Five hundred ninety-two live-born, parent-reared infants of 263 litters from 56 breeding females were included in the analysis. The greatest reproductive success wasobserved in groups of ten to 11 members or four to five adults, including the parents. However, the survival rate was fairly constant over group size at approximately 80% of an expected maximum value and no significant correlation was observed between the total number of group members and infant survival rate, or between the number of adult members and infant survival. While helpers may be necessary to increase the survival rate of infants in wild groups, help of non-reproductive animals is not required in captivity, where energetic demands are comparatively low and ecological constraints absent. Under laboratory conditions the parents' skill in infant handling and the mother's physical condition, i.e., the ability to provide enough milk for the infants, is likely to be the most important factor for infant survival.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 11:06:12