Western lowland gorilla diet and resource availability: New evidence, cross-site comparisons, and reflections on indirect sampling methods

被引:155
作者
Doran, DM [1 ]
McNeilage, A
Greer, D
Bocian, C
Mehlman, P
Shah, N
机构
[1] SUNY Stony Brook, Dept Anthropol, Stony Brook, NY 11794 USA
[2] Wildlife Conservat Soc, Bronx, NY USA
[3] SUNY Stony Brook, Interdepartmental Doctoral Program Anthropol Sci, Stony Brook, NY 11794 USA
关键词
Gorilla; foraging strategy; food availability; fecal samples; feeding traces;
D O I
10.1002/ajp.10053
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
We describe the resource availability and diet of western lowland gorillas (Gorilla gorilla gorilla) from a new study site in the Central African Republic and Republic of Congo based on 3 years of study. The results, based on 715 fecal samples and 617 days of feeding trails, were similar to those reported from three other sites, in spite of differences in herb and fruit availability. Staple foods (consumed year-round) included high-quality herbs (Haumania), swamp herbs (when present), and a minimal diversity of fruit. A variety of fruits (average of 3.5 species per day and 10 per month) were selectively consumed; gorillas ignored some common fruits and incorporated rare fruits to a degree higher than predicted based on availability. During periods of fruit abundance, fruit constituted most of the diet. When succulent fruits were unavailable, gorillas used low-quality herbs (i.e., low-protein), bark, and more fibrous fruits as fallback foods. Fibrous fruit species, such as Duboscia macrocarpa and Klainedoxa gabonensis, were particularly important to gorillas at Mondika and other sites as fallbacks. The densities of these two species are similar across sites for which data are available, in spite of major differences in forest structure, suggesting they may be key species in determining gorilla density. No sex difference in diet was detected. Such little variation in western lowland gorilla diet across sites and between sexes was unexpected and may partly reflect limitations of indirect sampling. (C) 2002 Wiley-Liss, Inc.
引用
收藏
页码:91 / 116
页数:26
相关论文
共 29 条
[21]   Body mass in comparative primatology [J].
Smith, RJ ;
Jungers, WL .
JOURNAL OF HUMAN EVOLUTION, 1997, 32 (06) :523-559
[22]  
Tutin Caroline E. G., 1996, P58, DOI 10.1017/CBO9780511752414.007
[23]   FORAGING PROFILES OF SYMPATRIC LOWLAND GORILLAS AND CHIMPANZEES IN THE LOPE RESERVE, GABON [J].
TUTIN, CEG ;
FERNANDEZ, M ;
ROGERS, ME ;
WILLIAMSON, EA ;
MCGREW, WC .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES, 1991, 334 (1270) :179-186
[24]   FOODS CONSUMED BY SYMPATRIC POPULATIONS OF GORILLA-G-GORILLA AND PAN-T-TROGLODYTES IN GABON - SOME PRELIMINARY DATA [J].
TUTIN, CEG ;
FERNANDEZ, M .
INTERNATIONAL JOURNAL OF PRIMATOLOGY, 1985, 6 (01) :27-43
[25]   COMPOSITION OF THE DIET OF CHIMPANZEES AND COMPARISONS WITH THAT OF SYMPATRIC LOWLAND GORILLAS IN THE LOPE RESERVE, GABON [J].
TUTIN, CEG ;
FERNANDEZ, M .
AMERICAN JOURNAL OF PRIMATOLOGY, 1993, 30 (03) :195-211
[26]  
Watts David P., 1996, P16, DOI 10.1017/CBO9780511752414.004
[27]   HERBACEOUS VEGETATION IN DIFFERENT FOREST TYPES IN THE LOPE RESERVE, GABON - IMPLICATIONS FOR KEYSTONE FOOD AVAILABILITY [J].
WHITE, LJT ;
ROGERS, ME ;
TUTIN, CEG ;
WILLIAMSON, EA ;
FERNANDEZ, M .
AFRICAN JOURNAL OF ECOLOGY, 1995, 33 (02) :124-141
[28]  
WILLIAMSON EA, 1989, THESIS U STIRLING ST
[29]  
[No title captured]