摘要:

A brief survey was conducted in East Kalimantan, Indonesia, to determine the influence of selective logging operations on primate populations. Data were also collected on some birds and squirrels. Selective logging that causes only moderate habitat disturbance does not seem to result in a significant decrease in the densities of several primate species. Whereas some species adjust readily to moderately disturbed habitats, other species may have difficulty in maintaining a breeding population in logged areas. A review of the literature plus our own data suggest that rain forest birds and squirrels seem to be the most disrupted by selective logging of their habitats. While some of the other mammals are directly harmed by selective logging, others are endangered only by the human encroachment that often follows. Suggestions regarding enlightened tropical forestry practices, additional studies of the influence of selective logging, and the establishment of forest preservation areas are also discussed.

ISSN:0015-5713    

DOI:10.1159/000155676

出版商:S. Karger AG    

年代:1975

数据来源: Karger

摘要:

As descriptions of the facial muscles of lorisiform primates are lacking, the species Perodicticus potto and Nycticebus coucang are examined. The results are compared with other prosimians.

ISSN:0015-5713    

DOI:10.1159/000155677

出版商:S. Karger AG    

年代:1975

数据来源: Karger

摘要:

Study of sequences of dental development and eruption of extant and applicable fossil prosimians, as well as similar data available on Anthropoidea and insectivores, indicates that the ancestral primate stock was characterized by the initial appearance of the anterior dentition, not the molars. From this primitive condition two morphoclines, not one, can be defined with the sharing of derived character states indicating sister-group relationships between Galaginae and Cheirogaleinae and between Lepilemur, Megaladapis, and Adapidae.

ISSN:0015-5713    

DOI:10.1159/000155678

出版商:S. Karger AG    

年代:1975

数据来源: Karger

摘要:

The number of precaudal vertebrae in three African cercopithecine species are analyzed, with two definitions for thoracic and lumbar vertebrae compared. It is found that generic averages obscure some rather substantial differences at the species level for both Cercopithecus and Cercocebus. Further, when zygapophysis structure is used to define vertebral type, rather than presence or absence of rib facets, there is a substantial change in thoracic and lumbar averages that may be important from a functional (locomotion) standpoint.

ISSN:0015-5713    

DOI:10.1159/000155679

出版商:S. Karger AG    

年代:1975

数据来源: Karger

ISSN:0015-5713    

DOI:10.1159/000155680

出版商:S. Karger AG    

年代:1975

数据来源: Karger

ISSN:0015-5713    

DOI:10.1159/000155675

出版商:S. Karger AG    

年代:1975

数据来源: Karger