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1.
Int. j. morphol ; 29(1): 94-99, Mar. 2011. ilus
Article in English | LILACS | ID: lil-591957

ABSTRACT

This paper describes the digestive system of Caiman crocodilus, Melanosuchus niger and Paleosuchus palpebrosus based on anatomical and topographical inferences. The study involves two digestive systems of C. crocodilus, one of M. niger and one of P. palpebrosus, already fixed in 10 percent formaldehyde, belonging to the collection of the Wild Animal Research Laboratory (LAPAS) of the Federal University of Uberlândia. The work begins with a description of the digestive system of the aforementioned crocodilians, followed by topographical associations, aided by photographs taken with a SONY® DSC-H20 camera, X-rays of the gastrointestinal tract and a photograph of the digestive system of C. crocodilus prior to formaldehyding, which also belong to the LAPAS collection. The results indicate that the digestive system of crocodilians consists of a wide mouth, short pharynx, long straight esophagus, dilated stomach in relation to the rest of the tract, pancreas lodged between the first two ventral duodenal loops, coiled small intestine, large intestine with diameter larger than the preceding segments, and cloaca as the terminal portion of the digestive, urinary and reproductive systems. The anatomical and topographical description of the digestive system of C. crocodilus (Linnaeus, 1758) (Crocodylia: Alligatoridae), M. niger (Spix, 1825) (Crocodylia: Alligatoridae) and P. palpebrosus (Cuvier, 1807) (Crocodylia: Alligatoridae) can be extended to the other crocodilians due to interspecies and intraspecific behavioral similarities.


Mediante comparaciones anatómicas y topográficas describimos el sistema digestivo de C. crocodillus, M. nigeri y P. palpebrosus. Se utilizaron dos sistemas digestivos de C. crocodillus, uno de M. nigeri y uno de P. palpebrosus, fijados en formalina al 10 por ciento y pertenecientes al laboratorio de enseñanza e investigación de fauna silvestre (LAPAS) de la Universidade Federal de Uberlândia. En primera instancia se realizó la descripción del sistema digestivo de las mencionadas especies, seguido de comparaciones topográficas. Luego, fueron tomados registros fotográficos con cámara DSC H20 SONY. Adicional a esto, nos apoyamos con radiografías del tracto gastrointestinal y fotografías del sistema digestivo de C. crocodillus antes de ser fijados en formalina. Los resultados demuestraron que el sistema digestivo de estas tres especies de caimanes está constituido por una boca grande, faringe corta, esófago alargado y rectilíneo, estómago dilatado con relación a las otras partes del tracto digestivo, páncreas alojado entre las dos primeras curvaturas duodenales ventrales, intestino delgado plegado, intestino grueso con un diámetro mayor en relación a los segmentos anteriores y una cloaca donde también terminan los sistemas urinarios y reproductor. La descripción anatómica y topográfica del sistema digestivo de C. crocodillus, M. niger y P. palpebrosus puede ser extrapolada para otros cocodrilos por la semejanza comportamental interespecies e intraespecíficas.


Subject(s)
Animals , Alligators and Crocodiles/anatomy & histology , Alligators and Crocodiles/growth & development , Gastrointestinal Tract/anatomy & histology , Gastrointestinal Tract/embryology , Gastrointestinal Tract/innervation , Gastrointestinal Tract/ultrastructure , Anatomy, Regional
2.
Int. j. morphol ; 25(4): 683-687, Dec. 2007. ilus
Article in English | LILACS | ID: lil-626923

ABSTRACT

The pirarucu, Arapaimidae family fish, is one of the most important and emblematic species of Amazon. To investigate their circulatory system anatomies features were used 10 specimens with 74 cm medium total length, from river Araguaia lakes, Sao Miguel do Araguaia, Goias, Brazil. The fishes had their celomatic cavity open with dorsal aorta artery identified and cannulation where was injected synthetic latex. Fixation of those specimens was by injection of 10% formalin. In that specie, the coeliac-mesenteric artery is the only one arterial vessel responsible to digestive tract flow and always ramified from 2nd, 3rd and 4th left efferent branchial arteries. The stomach is flowing by coeliac artery and a gastric branch of the cecal ventral artery; intestine receives coeliac-mesenteric artery branchs and cranial and caudal mesenteries arteries branchs; the dorsal and ventral cecum are supplied by cecal dorsal and ventral arteries respectively.


El pirarucu, pez de la familia Arapaimidae, es una de las especies más importantes y emblemáticas de la ictiofauna amazónica. Para estudiar las características anatómicas de su sistema circulatorio, fueron utilizados 10 ejemplares de Arapaima gigas, con un longitud total media de 74 cm, provenientes de lagos del río Araguaia, Sao Miguel do Araguaia, Goiás, Brasil. A los peces se les abrió la cavidad celomática donde se identificó y canalizó la arteria aorta dorsal, injectándose una solución coloreada de látex sintético. La fijación del material se realizó con inyecciones de formol al 10%. La arteria celiacomesentérica es responsable de la irrigación del tubo digestivo y tiene origen en las 2ª, 3ª y 4ª arterias branquiales eferentes izquierdas. El estómago está irrigado por la arteria celíaca y por una rama gástrica de la arteria cecal ventral. El intestino recibe ramas arteriales procedentes de la arteria celiacomesentérica y de las arterias mesentéricas craneal y caudal; los ciegos dorsal y ventral están irrigados por las arterias cecales dorsal y ventral, respectivamente.

3.
Biosci. j ; 21(2): 123-129, May-Aug. 2005. ilus, tab
Article in Portuguese | LILACS | ID: lil-430574

ABSTRACT

No presente relato, descreve-se um caso de discoespondilose deformante em uma onça parda (Puma concolor). O animal foi avaliado no Hospital Veterinário da Universidade Federal de Uberlândia, apresentando prostação e paresia de membros pélvicos. Pelos exames radiográficos e laboratoriais de hemograma, pesquisa de hemoparasita e urinálise, foi possível diagnosticar discoespondilose deformante, sendo indicada realização de hemilaminectomia.


Subject(s)
Animals , Carnivora , Spinal Osteophytosis , Spine
4.
Biosci. j ; 21(1): 189-195, Jan.-Apr. 2005. ilus
Article in Portuguese | LILACS | ID: lil-561938

ABSTRACT

Neste estudo, verificou-se a origem e a distribuição do nervo isquiático de 30 gatos sem raça definida, 17 fêmeas e 13 machos, após fixação em solução aquosa de formaldeído a 10%. O nervo isquiático originou-se em 55 antímeros (91,67%) do ramo ventral do sexto nervo espinhal lombar, em 60 (100%) do ramo ventral do sétimo nervo espinhal lombar e do ramo ventral do primeiro nervo espinhal sacral e em 44 antímeros (73,33%), do ramo ventral do segundo nervo espinhal sacral. O aludido nervo cedeu ramos nervosos, em todos os animais, para os músculos glúteo profundo, piriforme, gêmio, bíceps femoral, semitendinosos e semimembranosos e, em alguns animais, para os músculos quadrado femoral (75,00%) abdutor crural caudal (78,33%), além do ramo comunicante com o nervo pudendo (71,67%). Após análise dos resultados, constatou-se diferença significativa (p<0,05) para os ramos nervosos emitidos aos músculos quadrado femoral em fêmeas profundo e quadrado femoral em machos e fêmeas.


The origin and distribution of the sciatic nerves were studied in 30 adult unknown breed cats. The sample included 17 females and 13 males. The nerves were fixed in 10% formaldehyde solution. Sciatic nerves were observed to originate, in 55 sample (91.67%), from the ventral branch of the sixth limbar spinal nerve; in 60 sample (100%), from the ventral branch of the seventh lumbar spinal berve; in 60 sample (100%), from the ventral branch of the first sacral nerve and, in 44 sample (73.33%), from the ventral branch of the second sacral nerve. The sciatic nerves branched out, in all of the animals studied, to the gluteus profundus, piriformis, gemelli, biceps femoris, semitendinosus and semimembranosus muscles, and some animals, to the quadratus femoris (75.00%) and abductor cruris caudalis muscles (78.33%). The nerves also extended to the communicant branch of the pudende nerve (71.67%). Significant difference (p<0.05) was observed among branches emitted to the quadratus femoris muscles in females and the gluteus produndus and quadratus femoris in males and females.


Subject(s)
Animals , Male , Female , Adult , Cats , Formaldehyde/administration & dosage , Sciatic Nerve , Cats , Sciatic Nerve/anatomy & histology
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