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Registros recuperados: 7
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Age and Sex-Related Geometrical Variation of Ramus mandibulae of Sus scrofa's (Mammalia: Artiodactyla) Jaws International Journal of Morphology
Hohl,Leandro dos S. L; Sicuro,Fernando L; Azorit,Concepción; Carrasco,Rafael; Rocha-Barbosa,Oscar.
Morphological variation of the ramus mandibulae of wild Sus scrofa was described and correlated to sex and age differences. Young forms (n=27, 15 males, 12 females) and adults (n=23, 13 males, 10 females) were analyzed through Geometric Morphometrics (2-D) to assess differences between groups. We found significant differences between age- and sex-related shape variations at ramus mandibulae level. Young wild boars present bulky angular process with backward oriented coronoid process, while adults show slender jaw vertical ramus, and orthogonally oriented coronoid process. The ramus mandibulae in female wild boars is more robust and bulky than in males. The morphological changes between young and adult forms are related to alterations in the osteo-muscular...
Tipo: Journal article Palavras-chave: Mandible; Ontogeny; Sexual Dimorphism; Wild boar.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400026
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Bats of the Serra da Bocaina National Park, southeastern Brazil: an updated species list and a distribution extension for Trinycteris nicefori (Sanborn, 1949) Biota Neotropica
Delciellos,Ana Cláudia; Motta,Adarene; Dias,Daniela; Almeida,Brunna; Rocha-Barbosa,Oscar.
Abstract: The Serra da Bocaina National Park (SBNP) is a large remnant of Atlantic Forest located within an endangered biodiversity hotspot, which contributes to the connectivity among protected areas in the region. Despite the ecological importance of the SBNP, its bat fauna is poorly-known, and no comprehensive inventory is available. The present study provides an updated list of the bat species found in the SBNP. The four-year study was based on a capture-mark-recapture approach at four sites within the park, in the municipality of Paraty, Rio de Janeiro state, Brazil. A total of 22 bat species were recorded, representing two families, Phyllostomidae (n = 19 species) and Vespertillionidae (n = 3). This added 14 species to the known bat fauna of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Forest; Chiroptera; Faunistic inventory; Species richness.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400303
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Excavatory Cycle of Leposternon microcephalum Wagler, 1824 (Reptilia, Amphisbaenia) International Journal of Morphology
Barros-Filho,José Duarte de; Hohl,Leandro dos Santos Lima; Rocha-Barbosa,Oscar.
The excavatory movements of the spade-snouted amphisbaenid Leposternon microcephalum (Reptilia, Squamata) was studied with the aid of videofluorscopy (X-ray) techniques. This allows the observation of skull and column movements along tunneling, and a more detailed motion observation, being so a novel approach for amphisbaenian excavatory rescarches. A single specimen of Leposternon microcephalum was kept in a glass terrarium filled with semoline, and filmed with a scopy (X-ray) machine. Fixed anatomical marks on the head of the specimen were put in drawings from the framed recordings. Selected sequences of the recordings were fragmented in isolated frames for motion observation. The analysis of the recordings revealed a repetitive pattern of excavatory...
Tipo: Journal article Palavras-chave: Reptilia; Amphisbaenia; Leposternon microcephalum; Scopy; Locomotion.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000200027
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Kinematic description of the vertical climbing of Dasypus novemcinctus (Xenarthra, Dasypodidae): the first report of this ability in armadillos Mastozool. neotrop.
Costa,Fabiana R; Clerici,Giannina P; Rosa,Patrícia S; Ribeiro,Leonardo L; Rocha-Barbosa,Oscar.
Armadillos are well-known quadrupeds whose digging abilities classify them differently into many fossorial categories. This is the first time a kinematic description is provided on the vertical climbing sequences performed by these animals, more specifically by the nine-banded armadillo Dasypus novemcinctus. After an opportunistic observation of climbing behavior, video recording sessions were setup to document wire mesh climbing. The individuals climbed up to its top showing four distinct ways of vertical progression, such as lat­eral and diagonal-sequences as well as few styles that resemble the asymmetrical motions used by quadrupeds on land. Sharp claws were used as strategic points of attachment on a substrate, and tails provided additional support...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Behavior; Cingulata; Locomotion; Nine-banded armadillo; Xenarthra.
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832017000200019
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Origin and Antimeric Distribution of the Femoral Nerves in New Zealand Rabbits International Journal of Morphology
Medeiros-do-Nascimento,Renata; Alves-Pereira,Jorge Luiz; Rocha-Barbosa,Oscar; Abidu- Figueiredo,Marcelo.
The origin and distribution of the femoral nerves in both antimeres were studied in 30 New Zealand rabbits (15 males and 15 females). The specimens were collected after natural death and fixed with 10% formaldehyde solution. In males, the femoral nerve originated from the ventral branches of the fourth, sixth and seventh lumbar spinal nerves in seven animals (46.67%), in two animals (13.33%) from the ventral branches of the fifth and sixth lumbar spinal nerves, in one animal (6.67%) from the ventral branch of the fifth lumbar spinal nerve, in three animals (20%) from the ventral branches of the fifth, sixth and seventh lumbar spinal nerves, in one animal (6.67%) from the ventral branches of the fourth and fifth lumbar spinal nerves, and in one animal...
Tipo: Journal article Palavras-chave: New Zealand rabbits; Femoral nerves; Variation; Oryctolagus cuniculus; Lagomorpha.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200035
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Structure of claws and toes of two tropidurid lizard species of Restinga from Southeastern Brazil: adaptations to the vertical use of the habitat RChHN
Carvalho Ribas,Sueli; Velloso,Ana Lucia Rosario; Teixeira-Filho,Pedro; Rocha-Barbosa,Oscar; Evangelista,Heitor; Alves dos Santos,Elaine.
Tropidurus torquatus and Liolaemus lutzae, found in a restinga habitat, show some morphological differences associated with differential microhabitats use. There were made measurements of the snout-vent length, length and width of the largest toe of hand and foot, and length, width, height and curvature of the claws. We counted the number of adhesive lamellae of the largest toe of each member. T. torquatus has larger toes, greater number of adhesive lamellae and higher and more curve claws than L. lutzae. No significant differences in toe and claw widths were found. These results suggest that the differences found in the morphology of toes and claws of these two species would be associated with the differential microhabitat use. T. torquatus has...
Tipo: Journal article Palavras-chave: Tropiduridae; Ecomorphology; Lizard; Claw; Microhabitat use.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000400003
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Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae) International Journal of Morphology
Aveiro-Lins,Gustavo; Rocha-Barbosa,Oscar; Salomão,Maria da Graça; Puorto,Giuseppe; de Castro Loguercio,Mariana Fiuza.
Imantodes cenchoa (Duméril, 1853) is an arboreal, nocturnal and oviparous xenodontine snake, which feeds on amphibians and lizards. It is found in Central and South America, including northern and central Brazil. In this work, we investigated the relationship between topographic anatomy and habitat in I. cenchoa. Twenty specimens (13 non pregnant females and 7 males) were examined. The topographic anatomy study was realized through observations of the internal anatomy, particularly the position and size of lung, heart, liver, left and right gonads and left and right kidneys. Results showed that all the organs are located in a posterior position in relation to the snout vent length (SVL). The centre of gravity is found at about 74% of SVL in both males and...
Tipo: Journal article Palavras-chave: Snakes; Ecomorphology; Anatomy; Allometry; Arboreality.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000100009
Registros recuperados: 7
Primeira ... 1 ... Última
 

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