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240 results for “Molossidae”
FIG. 18 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 18. — Ventral view of the skull of Molossus pretiosus Miller, 1902. Note the crest between the occipital and the basisphenoid pits. Scale bar: 1 mm.
FIG. 13 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 13. — Molossus molossus (Pallas, 1766) skull: A, dorsal view; B, frontal view; C, ventral view; D, posterior view; E, lateral view. Scale bar: 1 mm.
FIG. 14 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 14. — Molossus molossus (Pallas, 1766). Photo courtesy of Dr Marco A. R. Mello (https://marcoarmello.wordpress.com).
FIG. 12 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 12. — Geographic range of Molossus rufus (E. Geoffroy, 1805) in Brasil. The numbers represent the localities described in Appendix 1.
FIG. 10 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 10. — Molossus rufus (E. Geoffroy, 1805). Photo courtesy of Dr Marco A. R. Mello (https://marcoarmello.wordpress.com).
FIG. 11 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 11. — Skull of Molossus rufus E. Geoffroy, 1805: A, dorsal view; B, posterior view; C, lateral view; D, frontal view. Scale bar: 1 mm.
FIG. 2 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 2. — Variable characters in skull morphology within Molossus E. Geoffroy, 1805 (Pallas, 1766): A, B, lateral views; C, D, ventral views; E, F, posterior view; H, G, frontal view. Numbers represents characters described in the text: 1, skull robustness; 2, sagittal crest; 3, basioccipital pits; 4, projection of the canines; 5, lambdoidal crest and occipital complex; 6, mastoid process; 7, rostrum shape; 8, infraorbital foramen; 9, upper incisors; 10, nasal process. Not to scale.
FIG. 8 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 8. — Ventral view of skull of Molossus coibensis Allen, 1904. The arrow shows the absence of the basioccipital pits.
FIG. 6 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 6. — Molossus aztecus Saussure, 1860 skull: A, ventral view; B, posterior view; C, lateral view; D, frontal view. Scale bar: 1 mm.
FIG. 5. — Strict consensus tree from eight most parsimonious trees recovered for Molossus E. Geoffroy, 1805 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 5. — Strict consensus tree from eight most parsimonious trees recovered for Molossus E. Geoffroy, 1805. Numbers above the branches indicate Bootstrap values and bottom numbers indicate Bremer support values.
FIG. 3 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 3. — Principal Components Analysis plot of PC1 and PC2 based on 13 cranial and external variables of Molossus E. Geoffroy, 1805: A, females, B, males. Symbols: ■, M. pretiosus Miller, 1902; ■, M. rufus (E. Geoffroy, 1805); ▲, M. currentium Thomas, 1901; +, M. molossus (Pallas, 1766); X, M. coibensis Allen, 1904; ▲, M. aztecus Saussure, 1860;, M. sinaloae Allen, 1906; *, and Molossus sp.
FIG. 1 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 1. — Definition of skull measurements used in this study of Molossus E. Geoffroy, 1805. Abbreviations: see Material & Methods. Reprinted from Loureiro
FIG. 7 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 7. — Geographic range of Molossus aztecus Saussure, 1860 in Brazil (Gregorin et al. 2011). -, represents new records for the country, the numbers represent the localities described in Appendix 1.
FIG. 4 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 4. — Principal component analysis of the first two main components (PC1 and PC2) based on 13 cranial and external variables of Molossus molossus: A, males,B, females.Symbols:■, Rio de Janeiro; ▲, Ceará; ▼, Pará; +, Rio Grande do Sul; ▲, Piauí; ●, Mato Grosso do Sul; O, Minas Gerais; *, Bahia; ◆, Amazonas; ●, Paraíba;, São Paulo; ❚, Mato Grosso; x, Paraiba, ▼, Acre; ●, Piaui.
FIG. 19 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 19. — Geographic range of Molossus pretiosus Miller, 1902 in Brasil. The numbers represent the localities described in Appendix 1.
FIG. 17 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 17. — Geographic range of Molossus currentium Thomas, 1901 in Brasil: -, represents new records for the country. The numbers represent the locality described in Appendix 1.
FIG. 9 in Diversity, morphological phylogeny, and distribution of bats of the genus Molossus E. Geoffroy, 1805 (Chiroptera, Molossidae) in Brazil
FIG. 9. — Geographic range of Molossus coibensis Allen, 1904 in Brazil: -, Represents new records for the country. The numbers represent the localities described in Appendix 1.
Figs 1-5 in Use of roof as roost of Eumops perotis (Molossidae: Chiroptera) in southeast Brazil
Figs 1-5. Different postures adopted by bats of the species Eumops perotis inside the roost in northwestern SÃo Paulo, Brazil. We highlight a group of seven overlapping individuals (Fig. 1), the posture adopted by solitary males (Figs 2 and 3), and the position adopted by pups in the maternity colony (Figs 4 and 5) inside the refuge.
Figure 4 in First record of Eumops glaucinus (Wager, 1843) (Chiroptera, Molossidae) to the Brazilian state of Maranhão
Figure 4. Neighbor-Joining phylogenetic tree of Eumops species based on the analysis of the COI sequences, using the Tamura-Nei algorithm. The E. glaucinus specimen from Maranhão (CUMA72) is highlighted. The values at each node refer to the Neighbor-Joining/Maximum Parsimony/Maximum Likelihood bootstrap scores. Legend: USA = United States; CAN = Canada; FG = French Guiana; MA = Maranhão, Brazil.
Craniodental traits predict feeding performance and dietary hardness in a community of Neotropical free-tailed bats (Chiroptera: Molossidae)
<p>Form-function studies have established a strong link between dental morphology and the mechanical properties of food items, with animals evolving tooth shapes theoretically ideal for their diets. However, information on how teeth perform under natural conditions is rare, which limits our understanding of how dental morphology influences dietary ecology and niche partitioning within animal communities.</p> <p>Free-tailed bats (Chiroptera: Molossidae) are a diverse clade of aerial insectivorous mammals that exhibit an outstanding variation in size and craniodental traits, which have been directly related to ecological segregation among sympatric species.</p> <p>We investigate the mechanisms that allow functional dietary specialization and trophic segregation among sympatric free-tailed bat species inhabiting a Neotropical forest. To do so, we coupled data on 3D dental topographic metrics, head and skull dimensions, field-collected feeding performance and dietary hardness measurements.</p> <p>We found that evolved differences in molar topography and skull size vary in tandem with the mechanical demands of prey items naturally consumed by sympatric molossid species. This may be explained by feeding performance capabilities resulting from both molar shape and the overall size of the feeding apparatus, which seem to allow efficient processing of prey items with specific mechanical properties. For instance, smaller bats with higher molar topographic values (sharper, more complex molars) and more gracile heads mainly feed on softer insects, whereas bigger bats with lower molar topographic values (blunter, less complex molars) and more robust heads mostly feed on tougher insects. Species with a broader range of sizes, craniodental morphologies, and insect hardness are also present in the community.</p> <p>Our results illustrate how the morphology and size of feeding structures, and how they perform, may facilitate trophic segregation among sympatric insectivorous bats. Similar mechanisms may help structure other communities of insectivorous mammals, therefore the approaches presented here could be used to generate a better understanding of the ecomorphological traits and processes that underlie their diversity.</p>
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