scholarly journals Decline of Propithecus diadema edwardsi and Varecia variegata variegata (Primates: Lemuridae) in south-east Madagascar

Oryx ◽  
2005 ◽  
Vol 40 (1) ◽  
pp. 108-111 ◽  
Author(s):  
Shawn M. Lehman ◽  
Jonah Ratsimbazafy ◽  
Andry Rajaonson ◽  
Sabine Day
Keyword(s):  
Forest Cover ◽  
Field Surveys ◽  
Black And White ◽  
Varecia Variegata ◽  
Conservation Authorities ◽  
Propithecus Diadema ◽  
Conservation Plans ◽  
Ruffed Lemur ◽  
Propithecus Diadema Edwardsi ◽  
Lemur Species

This paper describes the results of field surveys for two Endangered lemurs, Milne-Edward's sifaka Propithecus diadema edwardsi and the black and white ruffed lemur Varecia variegata variegata, in the unprotected Fandriana-Marolambo forest corridor in south-east Madagascar. Published range maps show P. d. edwardsi and V. v. variegata present in the corridor, although few surveys have been conducted in this area. A total of 292.9 km of surveys were conducted at eight sites in the corridor but P. d. edwardsi and V. v. variegata were each located at only one site. Absence of these species at other sites may be the combined result of altitudinal and anthropogenic effects. Conservation plans for P. d. edwardsi and V. v. variegata are complicated because gaps in forest cover prevent dispersal of conspecifics from nearby protected areas. Conservation authorities should be cautious in using range maps based on the presumed distribution of lemur species.

The Behavioral Repertoire of the Black-and-White Ruffed Lemur, Varecia variegata variegata (Primates: Lemuridae)

1988 ◽  
Vol 51 (1) ◽  
pp. 1-32 ◽  
Author(s):  
Michael E. Pereira ◽  
Martha L. Seeligson ◽  
Joseph M. Macedonia
Keyword(s):  
Behavioral Repertoire ◽  
Black And White ◽  
Varecia Variegata ◽  
Ruffed Lemur

RECURRENT CALCIUM PHOSPHATE UROLITHIASIS IN A BLACK-AND-WHITE RUFFED LEMUR (VARECIA VARIEGATA)

2014 ◽  
Vol 45 (1) ◽  
pp. 148-152 ◽  
Author(s):  
Andrew C. Cushing ◽  
George Kollias ◽  
S. Emmanuelle Knafo ◽  
Renee Streeter ◽  
Noha Abou-Madi
Keyword(s):  
Calcium Phosphate ◽  
Black And White ◽  
Varecia Variegata ◽  
Ruffed Lemur

scholarly journals Black-and-White Ruffed Lemur (Varecia variegata) in Captivity: Analysis of the Oral Microbiota in a One Health Perspective

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2905
Author(s):  
Carolina Silva ◽  
João F. Requicha ◽  
José J. Martins ◽  
Aida Duarte ◽  
Isabel R. Dias ◽  
...  
Keyword(s):  
Biofilm Formation ◽  
One Health ◽  
Hospital Environment ◽  
Oral Microbiota ◽  
Gram Negative ◽  
Wild Mammals ◽  
Black And White ◽  
Varecia Variegata ◽  
In Captivity ◽  
Ruffed Lemur

This study aimed to characterize the susceptibility profile to antibiotics and biofilm formation of Gram-negative bacterial isolates obtained from the oral cavity of the black-and-white ruffed lemur (Varecia variegata). From eight individuals from a zoo located in Portugal, samples of the oral microbiota were collected with sterile swabs and then placed in closed tubes with a transport medium. Culture was carried out for media of Gram-negative bacteria. Twenty-two isolates were obtained and subjected to susceptibility tests to twenty-five antimicrobial agents belonging to seven different classes. All tested isolates demonstrated resistance to, at least, one antibiotic, and it was possible to observe multidrug resistance in 11 of the 22 isolates (50%). It should be noted that an isolate showed phenotypic resistance to imipenem, an antibiotic for exclusive use in a hospital environment. All the isolates showed an increasing ability of biofilm formation over time. The obtained results show that wild mammals in captivity could be reservoirs and potential sources of multi-resistant pathogens. In view of this fact and considering the One Health concept, it will be advisable to establish local monitoring programs worldwide that benefit and protect human, animal and environmental health.

Patch size and isolation influence genetic patterns in black-and-white ruffed lemur (Varecia variegata) populations

2013 ◽  
Vol 14 (3) ◽  
pp. 615-624 ◽  
Author(s):  
Sheila M. Holmes ◽  
Andrea L. Baden ◽  
Rick A. Brenneman ◽  
Shannon E. Engberg ◽  
Edward E. Louis ◽  
...  
Keyword(s):  
Patch Size ◽  
Black And White ◽  
Varecia Variegata ◽  
Genetic Patterns ◽  
Ruffed Lemur

Necrotizing Meningoencephalitis in a Captive Black and White Ruffed Lemur (Varecia variegata variegata) Caused by Acanthamoeba T4 Genotype

2015 ◽  
Vol 153 (4) ◽  
pp. 231-235 ◽  
Author(s):  
N. Gaide ◽  
M. Pelandakis ◽  
C. Robveille ◽  
O. Albaric ◽  
G. Jouvion ◽  
...  
Keyword(s):  
Black And White ◽  
Varecia Variegata ◽  
Ruffed Lemur

Primary seed dispersal by the black-and-white ruffed lemur (Varecia variegata) in the Manombo forest, south-east Madagascar

2011 ◽  
Vol 27 (5) ◽  
pp. 529-538 ◽  
Author(s):  
Kara L. Moses ◽  
Stuart Semple
Keyword(s):  
Seed Dispersal ◽  
Dispersal Patterns ◽  
Black And White ◽  
Structure And Dynamics ◽  
Gut Passage ◽  
Faecal Analysis ◽  
Varecia Variegata ◽  
Ranging Behaviour ◽  
Dispersal Distances ◽  
Ruffed Lemur

Abstract:Seed dispersal is a pivotal ecological process but remains poorly understood on Madagascar, where lemurs are key dispersers. The black-and-white ruffed lemur (Varecia variegata) possesses many behavioural and ecological attributes potentially conducive to effective seed dispersal, but no studies have investigated dispersal patterns in this species. This 3-mo study quantified aspects of the primary seed dispersal patterns generated by two Varecia variegata groups (7 individuals). Feeding and ranging behaviour was quantified using behavioural observation (345.6 h), dispersal quantity and seed identity was determined by faecal analysis, and 10-wk germination trials tested effects of gut passage on germination of four species. Individual lemurs dispersed an estimated 104 seeds d−1, of 40 species. Most seeds were large (>10 mm); the largest was 42 mm long. Gut passage was rapid (mean 4.4 h) and generally increased germination speed and success. Mean and maximum inferred dispersal distances were 180 and 506 m respectively; low compared with many anthropoids, but possibly typical of lemurs. Though limited by a short study period, results suggest that the ruffed lemur is an effective disperser of seeds and possibly a critical disperser of large-seeded species which other frugivores cannot swallow. Loss of large-bodied seed dispersers such as Varecia variegata may have far-reaching ecological consequences including impacts on forest structure and dynamics.

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