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40 results for “Cheirogaleidae”
Ancient introgression in mouse lemurs (Microcebus:Cheirogaleidae) explains 20 years of phylogenetic uncertainty
<p>Mouse lemurs (genus <em>Microcebus</em>) are a clade of approximately 26 named species of small, nocturnal primates endemic to Madagascar. The genus radiated one and ten million years ago and is morphologically cryptic, with most species having been named within the past 20 years largely based on phylogenetic analysis of short fragments of mitochondrial data. More recent work has been focused on revisiting species designations with autosomal nuclear data using more sophisticated statistical approaches. The order of speciation events in <em>Microcebus </em>remains contentious, particularly with regard to the placement of the <em>M. ravelobensis </em>clade. We investigated support for previous phylogenetic hypotheses based on available whole-genome assemblies from six species and an outgroup. We recovered over 4,000 one-to-one orthologs from these assemblies and used concatenation and coalescent species tree methods to<em> </em>evaluate if differences between previous studies were due to methodological differences or to limitations from too few loci. Observed gene tree discordance was high with patterns inconsistent with incomplete lineage sorting alone. Therefore, we estimated phylogenetic networks to investigate ancient introgression events that may explain observed gene tree distributions and previous phylogenetic conflicts. A network model, invoking some role for introgressive hybridization in the early evolution of <em>Microcebus</em>, better characterizes phylogenetic relationships than does any binary species tree. Our results provide insights into the biogeographic history of a threatened and diverse group of primates while also highlighting an important role for phylogenetic network methods in resolving cases of phylogenetic uncertainty.</p>
Ancient introgression in mouse lemurs (Microcebus:Cheirogaleidae) explains 20 years of phylogenetic uncertainty
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Figure 1 in Morphometrics confirm taxonomic deflation in dwarf lemurs (Primates: Cheirogaleidae), as suggested by genetics
Figure 1. Sampling localities. Sampling sites of both the field samples and the museum specimens included in the analyses of this study are marked with circles. The colours indicate that individuals found at the respective site were classified as Cheirogaleus medius (yellow), Cheirogaleus major (red), and Cheirogaleus crossleyi (blue), or could not be clearly classified (white) by the analyses presented in this study. The Sambava locality is marked by two circles, as two different species were collected at this site. The asterisks denote sites that were newly sampled for this study.
On following page: 26. Crossley's Dwarf Lemur (Cheirogaleus crossleyi); 27. Lesser Iron-gray Dwarf Lemur (Cheirogaleus minusculus). in Cheirogaleidae
On following page: 26. Crossley's Dwarf Lemur (Cheirogaleus crossleyi); 27. Lesser Iron-gray Dwarf Lemur (Cheirogaleus minusculus).
On following pages: 3. Madame Berthe's Mouse Lemur (Microcebus berthae); 4. Peters's Mouse Lemur (Microcebus myoxinus); 5. Golden-brown Mouse Lemur (Microcebus ravelobensis): 6. Bongolava Mouse Lemur (Microcebus bongolavensis); 7. Ambarijeby Mouse Lemur (Microcebus danfossi); 8. Margot Marsh's Mouse Lemur (Microcebus margotmarshae); 9. Sambirano Mouse Lemur (Microcebus sambiranensis): 10. Nosy Be Mouse Lemur (Microcebus mamiratra); 11. Tavaratra Mouse Lemur (Microcebus tavaratra); 12. Montagne d'Ambre Mouse Lemur (Microcebus arnholdi); 13. Rufous Mouse Lemur (Microcebus rufus); 14. Jolly's Mouse Lemur (Microcebusjollyae); 15. Gerp's Mouse Lemur (Microcebus gerpi); 16. Goodman's Mouse Lemur (Microcebus lehilahytsara); 17. Simmons's Mouse Lemur (Microcebus simmons): 18. Anjiahely Mouse Lemur (Microcebus macarthur); 19. Mittermeier''s Mouse Lemur (Microcebus mittermeieri). in Cheirogaleidae
On following pages: 3. Madame Berthe's Mouse Lemur (Microcebus berthae); 4. Peters's Mouse Lemur (Microcebus myoxinus); 5. Golden-brown Mouse Lemur (Microcebus ravelobensis): 6. Bongolava Mouse Lemur (Microcebus bongolavensis); 7. Ambarijeby Mouse Lemur (Microcebus danfossi); 8. Margot Marsh's Mouse Lemur (Microcebus margotmarshae); 9. Sambirano Mouse Lemur (Microcebus sambiranensis): 10. Nosy Be Mouse Lemur (Microcebus mamiratra); 11. Tavaratra Mouse Lemur (Microcebus tavaratra); 12. Montagne d'Ambre Mouse Lemur (Microcebus arnholdi); 13. Rufous Mouse Lemur (Microcebus rufus); 14. Jolly's Mouse Lemur (Microcebusjollyae); 15. Gerp's Mouse Lemur (Microcebus gerpi); 16. Goodman's Mouse Lemur (Microcebus lehilahytsara); 17. Simmons's Mouse Lemur (Microcebus simmons): 18. Anjiahely Mouse Lemur (Microcebus macarthur); 19. Mittermeier''s Mouse Lemur (Microcebus mittermeieri).
Distribution. W in Cheirogaleidae
Distribution. W & SW Madagascar along a narrow strip of forests from the latitude of Toliara just S of the Fiherenana River (including Mikea Forest), N as far as Soalala.
Distribution. N, E in Cheirogaleidae
Distribution. N, E & SE Madagascar, inland from the range of the Greater Dwarf Lemur (C. major) in E Madagascar and extending further N, localities include Lac Alaotra, Andasibe (= Périnet), Imerina, Sambava, Manatenina, Vohémar, the Lavasoa-Ambatotsirongorongo Mts W of Tolagnaro (= Fort-Dauphin) and the mid- to low-elevational forests at Tsinjoarivo.
Distribution. EC Madagascar, known only from the type locality of Ambositra, north of Fianarantsoa; its continuing survival in the forest fragments of that region remains to be confirmed. Reports from the Bongolava Massif to the NW appear to be erroneous. in Cheirogaleidae
Distribution. EC Madagascar, known only from the type locality of Ambositra, north of Fianarantsoa; its continuing survival in the forest fragments of that region remains to be confirmed. Reports from the Bongolava Massif to the NW appear to be erroneous.
Distribution. N, E in Cheirogaleidae
Distribution. N, E & WC Madagascar from the SE tip of the island near Tolagnaro (= Fort-Dauphin) to near the N tip, with an isolated population in the CW, in the S in humid forests of the Vohimena and Anosy mountains and the littoral forest at Mandena, and possibly Sainte-Luce.
Distribution. W in Cheirogaleidae
Distribution. W, NE & SE Madagascar in the S spiny forest, E to the evergreen humid forest of Sainte-Luce, 40 km NE of Tolagnaro in the extreme SE; also in Petriky and Mandena, the Lavasoa-Ambatotsirongorongo Mountains (W of Tolagnaro), in the Tolagnaro region in the SE, in the Bay of Pasandava in the NW, in the Sahamalaza Peninsula, as far NW as Ankarana region, and in Bekaraoka and Sambava in the NE; possibly also in the Daraina area of the NE.
Distribution. CE Madagascar,in a forest patch of 228 km? at Andasivodihazo at about 1660 m above sea level and Ankadivory at about 1470 m above sea level; it may be restricted by the Onive and Mangoro rivers, Anjozorobe, and the corridor to the W half of the Tsinjoarivo forest above 1400 m, in an area ofless than 2000 km?, in Cheirogaleidae
Distribution. CE Madagascar,in a forest patch of 228 km? at Andasivodihazo at about 1660 m above sea level and Ankadivory at about 1470 m above sea level; it may be restricted by the Onive and Mangoro rivers, Anjozorobe, and the corridor to the W half of the Tsinjoarivo forest above 1400 m, in an area ofless than 2000 km?,
Distribution. NW Madagascar in the Sambirano region S of Ambanja, including the Ampasindava Peninsula, extending S to the Andranomalaza River. in Cheirogaleidae
Distribution. NW Madagascar in the Sambirano region S of Ambanja, including the Ampasindava Peninsula, extending S to the Andranomalaza River.
Distribution. NW Madagascar, known only from the Manongarivo Special Reserve, N of the Andranomalaza River and S of the Sambirano River; there are possibly isolated populations on the Ampasindava Peninsula and in the Tsaratanana Massif. in Cheirogaleidae
Distribution. NW Madagascar, known only from the Manongarivo Special Reserve, N of the Andranomalaza River and S of the Sambirano River; there are possibly isolated populations on the Ampasindava Peninsula and in the Tsaratanana Massif.
Distribution. W in Cheirogaleidae
Distribution. W & SW Madagascar in the SW between the Onilahy River in the S and the Tsiribihina River in the N, including Zombitse-Vohibasia and Isalo national parks, to the N of the Tsiribihina River; possibly also Andranomena Special Reserve and Tsingy de Bemaraha and Tsingy de Namoroka national parks.
Distribution. NW Madagascar from the Ampasindava Peninsula between the Mahavavy Nord and Maevarano rivers. in Cheirogaleidae
Distribution. NW Madagascar from the Ampasindava Peninsula between the Mahavavy Nord and Maevarano rivers.
Distribution. NE Madagascar from in and around Anjanaharibe-Sud Special Reserve as far NW as Bealalana. in Cheirogaleidae
Distribution. NE Madagascar from in and around Anjanaharibe-Sud Special Reserve as far NW as Bealalana.
Distribution. NE Madagascar, known only from its type locality near the village of Anjiahely ¢.26 km W of Maroantsetra. It appears to be sympatric with Mittermeier's Mouse Lemur (M. mittermereri) at Anjiahely. in Cheirogaleidae
Distribution. NE Madagascar, known only from its type locality near the village of Anjiahely ¢.26 km W of Maroantsetra. It appears to be sympatric with Mittermeier's Mouse Lemur (M. mittermereri) at Anjiahely.
Distribution. CE Madagascar, but the geographic distribution is poorly known; at present known only from its type locality of Andasibe (= Périnet) and neighboring areas (e.g. Maromizaha Forest), Analamazaotra Special Reserve, Anjozorobe-Angavo Protected Area, and Mantadia National Park. in Cheirogaleidae
Distribution. CE Madagascar, but the geographic distribution is poorly known; at present known only from its type locality of Andasibe (= Périnet) and neighboring areas (e.g. Maromizaha Forest), Analamazaotra Special Reserve, Anjozorobe-Angavo Protected Area, and Mantadia National Park.
Distribution. CE Madagascar, known only from its type locality, the Sahafina Forest (29-230 m above sea level), a lowland rainforest fragment of 15-6 km2, and its surrounding "savoka" (fallow farmland with cultivated trees), about 58 km E of Andasibe-Mantadia National Park and 18 km W of the Indian Ocean. The geographic range is presumably limited to the lowland areas (below 700 m) between the Mangoro River to the S and the Rianila River to the N, an area of about 7600 km?2. in Cheirogaleidae
Distribution. CE Madagascar, known only from its type locality, the Sahafina Forest (29-230 m above sea level), a lowland rainforest fragment of 15-6 km2, and its surrounding "savoka" (fallow farmland with cultivated trees), about 58 km E of Andasibe-Mantadia National Park and 18 km W of the Indian Ocean. The geographic range is presumably limited to the lowland areas (below 700 m) between the Mangoro River to the S and the Rianila River to the N, an area of about 7600 km?2.
Distribution. SE coastal Madagascar, known only from its type locality at Kianjavato, just S of the Mananjary River, and from nearby Mananjary to the NE; it may also be found just S of the Mananara River N to the N bank of the Mananjary River. in Cheirogaleidae
Distribution. SE coastal Madagascar, known only from its type locality at Kianjavato, just S of the Mananjary River, and from nearby Mananjary to the NE; it may also be found just S of the Mananara River N to the N bank of the Mananjary River.
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