摘要:

Oestrogen was measured in urine samples collected from captive females representing 7 species of New World monkey to provide an overview of the applicability of such information in the non-invasive monitoring of ovarian function and to assess the potential applicability of such information in phylogenetic studies. Species available for study were the pygmy marmoset, common marmoset, red-bellied tamarin, cotton-top tamarin, golden lion tamarin, Goeldi’s monkey and the owl monkey. Oestrone conjugates were measured in serially collected urine samples to demonstrate ovarian cyclicity. Urine samples obtained during the luteal phase were subjected to HPLC to identify immunoreactive oestrogens; oestrone and oestradiol-17β accounted for almost all of the immunoreactive oestrogen detected while oestriol content was negligible. Urine samples obtained during the follicular phase and luteal phase were subjected to glucuronidase hydrolysis, sulphatase hydrolysis and acid solvolysis, which revealed that the major immunoreactive oestrogen metabolite was: (1) oestradiol sulphate in the pygmy marmoset and common marmoset, (2) residual oestradiol in the red-bellied tamarin, (3) residual oestradiol and oestrone glucuronide in the cotton-top tamarin, and (4) oestrone glucuronide in the golden lion tamarin, Goeldi’s monkey and owl monkey. A phylogenetic tree based on the above shifts in oestrogen excretion suggested that clawed New World monkeys are specialized and that the lineages leading to the study species split off in the following order: Goeldi’s monkey, golden lion tamarin, cotton-top tamarin, red-bellied tamarin, common marmoset and pygmy ma

ISSN:0015-5713    

DOI:10.1159/000156841

出版商:S. Karger AG    

年代:1995

数据来源: Karger

摘要:

The distribution of Varecia variegata at 3 sites in Ranomafana National Park is consistent with the hypothesis that this specialized frugivore is the most susceptible of 12 sympatric lemur species to habitat disruption brought about by selective logging. Varecia is most abundant at the least disturbed site and absent from the most intensively logged site. The logged area showed lower values for overall tree basal area, crown diameters and tree height and an increase in the number of trees, presumably because of growing saplings. Varecia select large food trees of species that are preferentially logged. Although tree species diversity may be higher after logging, many Varecia food trees were absent from disturbed forests.

ISSN:0015-5713    

DOI:10.1159/000156842

出版商:S. Karger AG    

年代:1995

数据来源: Karger

ISSN:0015-5713    

DOI:10.1159/000156843

出版商:S. Karger AG    

年代:1995

数据来源: Karger

ISSN:0015-5713    

DOI:10.1159/000156844

出版商:S. Karger AG    

年代:1995

数据来源: Karger

ISSN:0015-5713    

DOI:10.1159/000156845

出版商:S. Karger AG    

年代:1995

数据来源: Karger

ISSN:0015-5713    

DOI:10.1159/000156846

出版商:S. Karger AG    

年代:1995

数据来源: Karger

ISSN:0015-5713    

DOI:10.1159/000156847

出版商:S. Karger AG    

年代:1995

数据来源: Karger

ISSN:0015-5713    

DOI:10.1159/000156848

出版商:S. Karger AG    

年代:1995

数据来源: Karger