Featured Research

from universities, journals, and other organizations

Estimating endangered lemur abundance: Coquerel’s sifaka

Date:
January 29, 2014
Source:
Instituto Gulbenkian de Ciência (IGC)
Summary:
Biologists provide the first abundance estimates of Coquerel’s sifaka an endangered lemur species, in its last main refuge, the Ankarafantsika National Park (ANP) in Madagascar.

Coquerel's sifaka.
Credit: Lounès Chikhi, IGC

In a study now published in the American Journal of Primatology, Célia Kun-Rodrigues and Jordi Salmona, from Lounès Chikhi's laboratory at the Instituto Gulbenkian de Ciência (IGC) provide the first abundance estimates of Coquerel's sifaka (Propithecus coquereli), an endangered lemur species, in its last main refuge, the Ankarafantsika National Park (ANP) in Madagascar.

Related Articles


Madagascar is one of the hottest Biodiversity hotspots, well known by the diverse species of lemurs living there. The Coquerel's sifaka is one of the lemur species that has been classified by the International Union for Conservation of Nature (IUCN) as an "endangered" species. Despite this status, no reliable population density and abundance estimates were available until now, that could be used in the planning of conservation strategies.

It was known that Coquerel's sifaka survives in small areas of the highly fragmented forests, and in the ANP, the largest forested area in northwest Madagascar with about 1000 km2. The fieldwork developed in the ANP allowed Kun-Rodrigues and Salmona to determine that the density of the Coquerel's sifaka population was dramatically different among the surveyed sites, varying from 5 to 100 individual per km². Sites closer to rivers have a higher density, whereas those closer to roads and forest edges present a lower number of sikafas.

Furthermore, the researchers observed a major decline of the population in the last 20 to 30 years, reaching a decrease of more than 90% in, at least, one spot of the park. It is difficult to estimate the number of individuals of Coquerel's sifaka living in the ANP since densities appeared to vary widely across the park. But a preliminary estimation of the total population size in the ANP made by the researchers indicates approximately 47,000 individuals. Habitat loss and poaching are probably the major factors that contribute to this species decline.

Lounès Chikhi says: "We believe that conservation actions are required at the community level but also at a wider geographical scales to reduce charcoal consumption in nearby towns and deforestation fuelled by foreign demands."

Jordi Salmona adds: "If nothing is done to protect Coquerel's sifaka, low densities such as 5 to 10 individuals per km2 may extend to the whole ANP. This would mean that in the next decade or two a population of just 5,000 individuals could be reached."


Story Source:

The above story is based on materials provided by Instituto Gulbenkian de Ciência (IGC). Note: Materials may be edited for content and length.


Journal Reference:

  1. Célia Kun-Rodrigues, Jordi Salmona, Aubin Besolo, Emmanuel Rasolondraibe, Clément Rabarivola, Tiago A. Marques, Lounès Chikhi. New density estimates of a threatened sifaka species (Propithecus coquereli) in Ankarafantsika National Park. American Journal of Primatology, 2014; DOI: 10.1002/ajp.22243

Cite This Page:

Instituto Gulbenkian de Ciência (IGC). "Estimating endangered lemur abundance: Coquerel’s sifaka." ScienceDaily. ScienceDaily, 29 January 2014. <www.sciencedaily.com/releases/2014/01/140129075810.htm>.
Instituto Gulbenkian de Ciência (IGC). (2014, January 29). Estimating endangered lemur abundance: Coquerel’s sifaka. ScienceDaily. Retrieved November 23, 2014 from www.sciencedaily.com/releases/2014/01/140129075810.htm
Instituto Gulbenkian de Ciência (IGC). "Estimating endangered lemur abundance: Coquerel’s sifaka." ScienceDaily. www.sciencedaily.com/releases/2014/01/140129075810.htm (accessed November 23, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Sunday, November 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

AFP (Nov. 23, 2014) — The arable district of Kenema in Sierra Leone -- at the centre of the Ebola outbreak in May -- has been under quarantine for three months as the cocoa harvest comes in. Duration: 01:32 Video provided by AFP
Powered by NewsLook.com
Anglerfish Rarely Seen In Its Habitat Will Haunt You

Anglerfish Rarely Seen In Its Habitat Will Haunt You

Newsy (Nov. 22, 2014) — For the first time Monterey Bay Aquarium recorded a video of the elusive, creepy and rarely seen anglerfish. Video provided by Newsy
Powered by NewsLook.com
Birds Around the World Take Flight

Birds Around the World Take Flight

Reuters - Light News Video Online (Nov. 22, 2014) — An imperial eagle equipped with a camera spreads its wings over London. It's just one of the many birds making headlines in this week's "animal roundup". Jillian Kitchener reports. Video provided by Reuters
Powered by NewsLook.com
Could Your Genes Be The Reason You're Single?

Could Your Genes Be The Reason You're Single?

Newsy (Nov. 21, 2014) — Researchers in Beijing discovered a gene called 5-HTA1, and carriers are reportedly 20 percent more likely to be single. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins