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Titolo:
FOSTERING BEHAVIOR AND THE EFFECT OF FEMALE DENSITY IN HAWAIIAN MONK SEALS, MONACHUS-SCHAUINSLANDI
Autore:
BONESS DJ; CRAIG MP; HONIGMAN L; AUSTIN S;
Indirizzi:
SMITHSONIAN INST,NATL ZOOL PK,DEPT ZOOL RES WASHINGTON DC 20008 NOAA,NATL MARINE FISHERIES SERV HONOLULU HI 96822
Titolo Testata:
Journal of mammalogy
fascicolo: 3, volume: 79, anno: 1998,
pagine: 1060 - 1069
SICI:
0022-2372(1998)79:3<1060:FBATEO>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
NORTHERN ELEPHANT SEAL; BAT MATERNITY COLONIES; HARBOR SEAL; PHOCA-VITULINA; ALLOPARENTAL CARE; BUBALUS-BUBALIS; WATER-BUFFALO; GREY SEAL; ADOPTION; MOTHER;
Keywords:
MONACHUS SCHAUINSLANDI; HAWAIIAN MONK SEALS; FOSTERING; NON-OFFSPRING NURSING; MATERNAL CARE; DENSITY EFFECTS; PINNIPEDS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
D.J. Boness et al., "FOSTERING BEHAVIOR AND THE EFFECT OF FEMALE DENSITY IN HAWAIIAN MONK SEALS, MONACHUS-SCHAUINSLANDI", Journal of mammalogy, 79(3), 1998, pp. 1060-1069

Abstract

Frequent nursing of pups by non-filial females (fostering) has been reported in Hawaiian monk seals (Monachus schauinslandi) at French Frigate Shoals in the Northwestern-Hawaiian Islands. We present data on the occurrence of fostering at Laysan Island, NWHI, and compare spatial patterns and behavior of seals at Laysan Island and East Island, French Frigate Shoals, to investigate the importance of density in frequency of fostering. Fostering was common at Laysan Island; 53% of 17 females nursed pups other than their own for some part of their lactation period. This level of fostering was significantly less than that at East Island, where ca. 90% of females fostered pups in 2 separate years (n = 30 in 1987 and 10 in 1989). Density of females was significantly lower at Laysan Island than East Island (0.5 versus 1.5 femaIes/1,000 m(2)), and nearest female neighbors were significantly farther away (58versus 27 m) at Laysan Island. Stage of lactation at which fostering started, the total duration of foster care and the duration of fostering episodes did not differ between colonies. However, mean number of pups fostered per female at the denser colony (2.3 pups, East Island) was greater than at the less dense colony (1.3 pups, Laysan Island). Nodifference occurred between islands in relative frequency of aggressive interactions between females, which are known to result in females exchanging pups. High female density does appear to increase fosteringfrequency but not through female-female aggression as expected. Instead, high density increases the likelihood that separated females and pups will encounter another potential partner before reuniting.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 12:22:29