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6 results for “Lemur catta”
Fig. 1 in Unveiling a novel parasitosis: Trichostrongylus colubriformis infection in captive ring-tailed lemurs (Lemur catta)
Fig. 1. Morphology of Trichostrongylus colubriformis adult stages: A) anterior end, scale bar 50 μm; B) detail of anterior end of female showing three small lips and a circle of cephalic papillae; C) detail of ovijector, scale bar 50 μm; D) detail of the cuticle; E) posterior end of male showing the structure of bursa, the gubernaculum (g) and short subequal spicules (sp); F) egg, scale bar 50 μm.
Fig. 2 in Unveiling a novel parasitosis: Trichostrongylus colubriformis infection in captive ring-tailed lemurs (Lemur catta)
Fig. 2. The evolutionary history was inferred by using the Maximum Likelihood method based on the Tamura 3-parameter model. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. The analysis involved 27 nucleotide sequences. There were a total of 684 positions in the final dataset.
Data from: Genetic wealth, population health: major histocompatibility complex variation in captive and wild ring-tailed lemurs (Lemur catta)
Across species, diversity at the major histocompatibility complex (MHC) is critical to individual disease resistance and, hence, to population health; however, MHC diversity can be reduced in small, fragmented, or isolated populations. Given the need for comparative studies of functional genetic diversity, we investigated whether MHC diversity differs between populations which are open, that is experiencing gene flow, versus populations which are closed, that is isolated from other populations. Using the endangered ring-tailed lemur (Lemur catta) as a model, we compared two populations under long-term study: a relatively "open," wild population (n = 180) derived from Bezà Mahafaly Special Reserve, Madagascar (2003–2013) and a "closed," captive population (n = 121) derived from the Duke Lemur Center (DLC, 1980–2013) and from the Indianapolis and Cincinnati Zoos (2012). For all animals, we assessed MHC-DRB diversity and, across populations, we compared the number of unique MHC-DRB alleles and their distributions. Wild individuals possessed more MHC-DRB alleles than did captive individuals, and overall, the wild population had more unique MHC-DRB alleles that were more evenly distributed than did the captive population. Despite management efforts to maintain or increase genetic diversity in the DLC population, MHC diversity remained static from 1980 to 2010. Since 2010, however, captive-breeding efforts resulted in the MHC diversity of offspring increasing to a level commensurate with that found in wild individuals. Therefore, loss of genetic diversity in lemurs, owing to small founder populations or reduced gene flow, can be mitigated by managed breeding efforts. Quantifying MHC diversity within individuals and between populations is the necessary first step to identifying potential improvements to captive management and conservation plans.
Data from: Genetic wealth, population health: major histocompatibility complex variation in captive and wild ring-tailed lemurs (Lemur catta)
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Plant species fed on by wild ring-tailed lemurs (Lemur catta) at nine sites
<p>A key aspect of a primate's ecology is its food source – the very nature of which is spatially and seasonally dependent, and may be affected by anthropic pressures. One of the most endangered, yet best-studied, strepsirrhine primates is the ring-tailed lemur (<i>Lemur catta</i>) – a species that has experienced significant human-induced habitat loss over many decades. To help understand feeding variability across time and space, I present a literature review of plant species (and parts) fed on by ring-tailed lemurs at nine sites in Madagascar: Ambatotsirongorongo, Andringitra Massif, Anja Reserve, Antserananomby, Berenty Reserve, Bezà Mahafaly Special Reserve, Cap Sainte-Marie, Tsaranoro Valley Forest, and Tsimanampetsotsa National Park. I gathered literature using keyword searches on Google Scholar (<a href="https://scholar.google.com/">https://scholar.google.com/</a>), and verified scientific names using the "Catalogue of the Plants of Madagascar" (<a href="http://legacy.tropicos.org/Project/Madagascar">http://legacy.tropicos.org/Project/Madagascar</a>). From 24 studies, I identify 221 genera and 241 species of consumed plants, with 92 genera and 70 species consumed at two or more sites. Based on the available distribution data, 63% of species are endemic and 22% native. Sixty-seven plants are known only by Malagasy common names and excluded from analyses. When authors identify the plant tissue consumed, 52% of species in the diet are represented by a single tissue type, typically leaves (mature and immature) or fruit (ripe or unripe). This review highlights the importance of studying multiple populations when creating dietary summaries of species and should prove valuable to those exploring ecological trends and habitat use by ring-tailed lemurs.</p>
Plant species fed on by wild ring-tailed lemurs (Lemur catta) at nine sites
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