MtDNA and nDNA corroborate existence of sympatric dwarf lemur species at Tsinjoarivo, eastern Madagascar

2010 ◽  
Vol 55 (3) ◽  
pp. 833-845 ◽  
Author(s):  
Linn F. Groeneveld ◽  
Marina B. Blanco ◽  
Jean-Luc Raharison ◽  
Vololonirina Rahalinarivo ◽  
Rodin M. Rasoloarison ◽  
...  
Keyword(s):  
Dwarf Lemur ◽  
Lemur Species

scholarly journals Discovery of Sympatric Dwarf Lemur Species in the High-Altitude Rain Forest of Tsinjoarivo, Eastern Madagascar: Implications for Biogeography and Conservation

2008 ◽  
Vol 80 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Marina B. Blanco ◽  
Laurie R. Godfrey ◽  
Mamihasimbola Rakotondratsima ◽  
Vololonirina Rahalinarivo ◽  
Karen E. Samonds ◽  
...  
Keyword(s):  
High Altitude ◽  
Rain Forest ◽  
Dwarf Lemur ◽  
Lemur Species

scholarly journals I Like the Way You Eat It: Lemur (Indri indri) Gut Mycobiome and Geophagy

2021 ◽  
Author(s):  
Luigimaria Borruso ◽  
Alice Checcucci ◽  
Valeria Torti ◽  
Federico Correa ◽  
Camillo Sandri ◽  
...  
Keyword(s):  
Plant Material ◽  
Soil Characteristics ◽  
Nutrient Supply ◽  
Fungal Species ◽  
High Concentration ◽  
Beneficial Role ◽  
Intimate Connection ◽  
Indri Indri ◽  
Lemur Species

AbstractHere, we investigated the possible linkages among geophagy, soil characteristics, and gut mycobiome of indri (Indri indri), an endangered lemur species able to survive only in wild conditions. The soil eaten by indri resulted in enriched secondary oxide-hydroxides and clays, together with a high concentration of specific essential micronutrients. This could partially explain the role of the soil in detoxification and as a nutrient supply. Besides, we found that soil subject to geophagy and indris’ faeces shared about 8.9% of the fungal OTUs. Also, several genera (e.g. Fusarium, Aspergillus and Penicillium) commonly associated with soil and plant material were found in both geophagic soil and indri samples. On the contrary, some taxa with pathogenic potentials, such as Cryptococcus, were only found in indri samples. Further, many saprotrophs and plant-associated fungal taxa were detected in the indri faeces. These fungal species may be involved in the digestion processes of leaves and could have a beneficial role in their health. In conclusion, we found an intimate connection between gut mycobiome and soil, highlighting, once again, the potential consequent impacts on the wider habitat.

scholarly journals On species delimitation: Yet another lemur species or just genetic variation?

2011 ◽  
Vol 11 (1) ◽  
Author(s):  
Matthias Markolf ◽  
Markus Brameier ◽  
Peter M Kappeler
Keyword(s):  
Genetic Variation ◽  
Species Delimitation ◽  
Lemur Species

Predation on Two Lemur Species in Sahamalaza Peninsula, North-Western Madagascar

Leaping Ahead ◽  
2012 ◽  
pp. 105-110
Author(s):  
Guy Hermas Randriatahina ◽  
N. Sylviane M. Volampeno
Keyword(s):  
North Western ◽  
Lemur Species

scholarly journals RADseq data reveal a lack of admixture in a mouse lemur contact zone contrary to previous microsatellite results

2021 ◽  
Author(s):  
Jelmer Wijtze Poelstra ◽  
B. Karina Montero ◽  
Jan Lüdemann ◽  
Ziheng Yang ◽  
S. Jacques Rakotondranary ◽  
...  
Keyword(s):  
Gene Flow ◽  
Contact Zone ◽  
Mouse Lemur ◽  
Biological Processes ◽  
Microsatellite Data ◽  
Ancestral Gene ◽  
Mouse Lemurs ◽  
Low Levels ◽  
Future Work ◽  
Lemur Species

Despite being one of the most fundamental biological processes, the process of speciation remains poorly understood in many groups of organisms. Mouse lemurs are a species-rich genus of small primates endemic to Madagascar, whose diversity has only recently been uncovered using genetic data and is primarily found among morphologically cryptic, allopatric populations. To assess to what extent described species represent reproductively isolated entities, studies are needed in areas where mouse lemur taxa come into contact. Hybridization has previously been reported in a contact zone between two closely related mouse lemur species (Microcebus murinus and M. griseorufus) based on microsatellite data. Here, we revisit this system using RADseq data for populations in, near, and far from the contact zone, including many of the individuals that had previously been identified as hybrids. Surprisingly, we find no evidence for admixed nuclear ancestry in any of the individuals. Re-analyses of microsatellite data and simulations suggest that previously inferred hybrids were false positives and that the program NewHybrids can be particularly sensitive to erroneously inferring hybrid ancestry. Using coalescent-bases analyses, we also show an overall lack of recent gene flow between the two species, and low levels of ancestral gene flow. Combined with evidence for local syntopic occurrence, these data indicate that M. murinus and M. griseorufus are reproductively isolated. Finally, we estimate that they diverged less than a million years ago, suggesting that completion of speciation is relatively rapid in mouse lemurs. Future work should focus on the underpinnings of reproductive isolation in this cryptic primate radiation, which are mostly unknown. Our study also provides a cautionary tale for the inference of hybridization with microsatellite data.

scholarly journals Seed dispersal syndromes in the Madagascan flora: the unusual importance of primates

Oryx ◽  
2018 ◽  
Vol 52 (3) ◽  
pp. 418-426 ◽  
Author(s):  
Aurélie Albert-Daviaud ◽  
Sarah Perillo ◽  
Wolfgang Stuppy
Keyword(s):  
Seed Dispersal ◽  
Data Science ◽  
Plant Traits ◽  
Bird Species ◽  
Lower Percentage ◽  
Endemic Plant ◽  
Ecological Processes ◽  
Dispersal Syndromes ◽  
Plant Animal Interactions ◽  
Lemur Species

AbstractMadagascar is one of the most threatened biodiversity hotspots, and protection of its biodiversity is becoming increasingly urgent as deforestation of the island continues. For the long-term success of conservation efforts it is essential that key ecological processes, such as seed dispersal, are protected and restored. Therefore, the identification of ecological gaps is a vital task. For Madagascar, only little is known about plant–animal interactions, and traditional methods of ecological research are too time-consuming to provide crucial information about breakdowns in these interactions. To identify likely dispersal gaps we therefore used a theoretical approach to analyse plant–disperser interactions in Madagascar. We used data science tools to impute missing data on relevant plant traits to subsequently predict the most likely dispersal agents for each of Madagascar's endemic plant species. We found that 38% of the endemic species (N = 8,784) are endozoochorous, and among these 26–41% display a primate syndrome and 17–19% a bird syndrome (depending on the definition of syndromes). This lower percentage of endozoochorous species and higher percentage of species with a primate syndrome in Madagascar compared to other tropical areas reflects the unusual disperser guild on the island. Only five bird species but 20 lemur species are frugivorous, and 16 of those lemur species are currently threatened with extinction. The disappearance of frugivorous lemurs would significantly change the vegetation dynamics of Madagascar's ecosystems, and a high proportion of Madagascar's endemic plants would enter an extinction vortex.

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