SURVIVAL AND BAND RECOVERY RATES OF SYMPATRIC GRAY DUCKS AND MALLARDS IN NEW-ZEALAND

被引：16

作者：

CAITHNESS, T ^{[1
]}

WILLIAMS, M ^{[1
]}

NICHOLS, JD ^{[1
]}

机构：

[1] US FISH & WILDLIFE SERV,PATUXENT WILDLIFE RES CTR,LAUREL,MD 20708

来源：

JOURNAL OF WILDLIFE MANAGEMENT | 1991年 / 55卷 / 01期

关键词：

D O I：

10.2307/3809247

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

We used band recovery data from grey ducks (Anas superciliosa) and mallards (A. platyrhynchos) banded sympatrically during 1957-74 to estimate annual survival and recovery rates. Young birds tended to have higher recovery rates and lower survival rates than adults for both species. Both species showed strong evidence of year-to-year variation in annual survival rates. Survival rates of male mallards were higher than those of females, as is typical for this species in North America, but there was no evidence of sex-specific survival differences in grey ducks. Recovery rate estimates for grey ducks were high and were significantly higher than those for mallards. However, survival rates did not differ significantly between the 2 species within any age-sex class. The similar survival rates, when mallard populations were increasing and grey ducks were decreasing, suggest that mallard reproductive rates have been greater than those of grey ducks.

引用

页码：111 / 118

页数：8

共 23 条

[1]

ANDERSON DR, 1976, US FISH WILDL SERV R, V128

[2]

ANDERSON DR, 1975, US FISH WILDL SERV R, V125

[3]

[Anonymous], WILDLIFE MONOGR

[4]

BALHAM RW, 1959, WILDL PUBL, V5

[5]

BELLROSE FC, 1950, 22 ILL NAT HIST SURV

[6]

Blohm R.J., 1987, T N AM WILDL NAT RES, V52, P246

[7]

BROWNIE C, 1985, US FISH WILDL SERV R, V156

[8] COMPOSITE DYNAMIC METHOD AS EVIDENCE FOR AGE-SPECIFIC WATERFOWL MORTALITY [J].

BURNHAM, KP ;

ANDERSON, DR .

JOURNAL OF WILDLIFE MANAGEMENT, 1979, 43 (02) :356-366

[9]

Caithness TA, 1982, GAMEBIRD HUNTING PRO

[10]

EBERHARDT LL, 1972, POPULATION ECOLOGY M, P153

← 1 2 3 →