DIVING BEHAVIOR OF LACTATING HARP SEAL, PHOCA-GROENLANDICA, FEMALES FROM THE GULF OF ST-LAWRENCE, CANADA

被引:54
作者
LYDERSEN, C [1 ]
KOVACS, KM [1 ]
机构
[1] UNIV WATERLOO,DEPT BIOL,WATERLOO N2L 3G1,ONTARIO,CANADA
关键词
D O I
10.1006/anbe.1993.1312
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Diving behaviour of four lactating harp seal females was recorded using time-depth recorders. The females spent 20·6 ± 3·8% (X ± SD) of their time hauled out on the surface of the ice, 34·2 ± 2·5% of the time in the water in a surface position, and 45·2 ± 5·9% of the time diving. A total of 3701 dives were recorded with a mean duration of 3·2 ± 2·4 min. The maximum dive duration recorded was 13 min and maximum recorded depth was 90 m. Only 0·6% of the dives exceeded the estimated aerobic dive limit of 10·4 min. The mean duration of haul-out periods was 1·2 ± 2·3 h. The average time between haul-out episodes was 3·9 ± 1·5 h. The majority of the haul-out periods (86%) were only 20·8 ± 10·3 min long, indicating that in most cases females returned to the ice only to nurse their pups. Longitudinal mass records showed that the females were losing an average of 2·8 ± 0·8 kg daily while pups were gaining an average of 2·3 ± 0·4 kg/day. The average mass transfer efficiency was 86 ± 19%. This extremely high transfer rate, with a recorded maximum of 111% for one mother-pup pair, can only be explained by females consuming some food during the lactation period, which is consistent with the diving records obtained during this study, but in contrast to the general belief that in most phocid species females fast throughout lactation. © 1993 The Association for the Study of Animal Behaviour.
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页码:1213 / 1221
页数:9
相关论文
共 32 条
[1]   BIRTH TO WEANING IN 4 DAYS - REMARKABLE GROWTH IN THE HOODED SEAL, CYSTOPHORA-CRISTATA [J].
BOWEN, WD ;
OFTEDAL, OT ;
BONESS, DJ .
CANADIAN JOURNAL OF ZOOLOGY, 1985, 63 (12) :2841-2846
[2]   DIVING BEHAVIOR IN RELATION TO WATER TEMPERATURE IN THE SOUTHERN ELEPHANT SEAL - FORAGING IMPLICATIONS [J].
BOYD, IL ;
ARNBOM, T .
POLAR BIOLOGY, 1991, 11 (04) :259-266
[3]   DISTRIBUTION AND HAUL-OUT BEHAVIOR OF HARBOR SEALS IN GLACIER BAY, ALASKA [J].
CALAMBOKIDIS, J ;
TAYLOR, BL ;
CARTER, SD ;
STEIGER, GH ;
DAWSON, PK ;
ANTRIM, LD .
CANADIAN JOURNAL OF ZOOLOGY, 1987, 65 (06) :1391-1396
[4]   HARP SEAL, PAGOPHILUS-GROENLANDICUS (ERXLEBEN, 1777) .14. CARDIAC ARRYTHMIAS [J].
CASSON, DM ;
RONALD, K .
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY, 1975, 50 (NA2) :307-314
[5]  
CASTELLINI MA, 1992, J EXP BIOL, V165, P181
[6]   THE ENERGETICS OF LACTATION - ACCURATE MEASUREMENTS FROM A LARGE WILD MAMMAL, THE GREY SEAL (HALICHOERUS-GRYPUS) [J].
FEDAK, MA ;
ANDERSON, SS .
JOURNAL OF ZOOLOGY, 1982, 198 (DEC) :473-479
[7]   HAUL-OUT BEHAVIOR AND DENSITIES OF RINGED SEALS (PHOCA-HISPIDA) IN THE BARROW-STRAIT AREA, NWT [J].
FINLEY, KJ .
CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE, 1979, 57 (10) :1985-1997
[8]  
FISHER H. D., 1955, FISH RES BD CANADA ATLANTIC PROG REPT, V61, P5
[9]  
IRVING LAURENCE, 1957, CANADIAN JOUR ZOOL, V35, P497, DOI 10.1139/z57-041
[10]  
Kooyman G.L, 1989, DIVERSE DIVERS PHYSL