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Influence of Reduced Salinity on the Histochemical Fiber Type Composition of the Claw Closer Muscle of Two Estuarine Crab Species, Cyrtograpsus angulatus and Neohelice granulata (Decapoda: Varunidae) International Journal of Morphology
Longo,María Victoria; Díaz,Alcira Ofelia.
The estuarine crustaceans are exposed to frequent and abrupt environmental salinity changes that involve adjustments at different levels in muscle tissue. The histochemical composition of fiber types of the claw closer muscle of Cyrtograpsus angulatus and Neohelice granulata (Dana, 1851) under hyper regulatory conditions was analyzed. Cryosections of the muscle were treated with myosin-adenosine triphosphatase (m-ATPase), succinic dehydrogenase (SDH), periodic acid Schiff (PAS) and Sudan Black B. The mean diameters, the relative area and the proportion of each muscle fiber type were calculated. Types I and IV would belong to 'extreme' groups, whereas types II and III would be considered 'intermediate'. Type I fibers were large and exhibited a weak reaction...
Tipo: Journal article Palavras-chave: Euryhaline crabs; Histochemistry; Hyper regulation; Muscle fibers; Salinity stress.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200025
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Preliminary Study of the Sonic Muscle of Micropogonias furnieri (Actinopterygii, Sciaenidae): Morfología e Histoquímica International Journal of Morphology
Devincenti,Clelia Viviana; Díaz,Alcira Ofelia; Longo,María Victoria; García,Alicia Mabel; Figueroa,Daniel; Goldemberg,Adriana Lía.
The present study highlights the morphology of the Micropogonias furnieri sonic muscle by means of histochemical techniques, relating it to previous histochemical studies of the pectoral fin and myotomal muscles. In order to classify the muscle fibres, succinic dehydrogenase (SDH) for mitochondria, periodic acid Schiff (PAS) for glycogen, Sudan Black and Red for lipids and myosin adenosine triphosphatase (m-ATPase) pre-incubated at alkaline and acid pHs to visualize the contraction velocity, were used. The sonic fibres were smaller than the white myotomal and pectoral fibres, showed homogenous size and distribution and had features common to white fibres: negative to SDH and lipids, weakly positive to PAS and m-ATPase following acid pre-incubation, and...
Tipo: Journal article Palavras-chave: Sonic muscle; Micropogonias furnieri; Morphology; Histochemistry.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400027
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Surface Ultrastructure of the Gills of Odontesthes bonariensis (Valenciennes, 1835)(Teleostei: Atheriniformes) from a Temperate Shallow Lake International Journal of Morphology
Tano de la Hoz,María Florencia; Longo,María Victoria; Escalante,Alicia Haydée; Díaz,Alcira Ofelia.
We studied the gill epithelium of juveniles of Odontesthes bonariensis using scanning electron microscopy with a particular interest in the relationship between cell morphology and the different functional aspects of gills. The specimens used were collected in Laguna de los Padres, Buenos Aires Province, Argentina. The gill filaments or primary lamellae are arranged in two rows along the convex outer face of the gill arch forming the anterior and posterior hemibranchiae. On its concave inner face, each arch supports two rows of gill rakers forming the pharyngeal region wall. The primary lamellae are lined by a stratified epithelium made up of polygonal cells with well-defined outlines and cell membrane microfolds. Several mucous and chloride cells were...
Tipo: Journal article Palavras-chave: Morphology; SEM; Gills; Fishes; Odontesthes bonariensis.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400035
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The adductor pectoral fin muscle of Micropogonias furnieri (Perciformes: Sciaenidae): a morphological and histochemical study Rev. Bras. Zool.
Hernández,María Sol; Longo,María Victoria; Devincenti,Clelia Viviana; Díaz,Alcira Ofelia.
ABSTRACT The adductor pectoral fin muscle in post-spawning females of the white croaker Micropogonias furnieri (Desmarest, 1823) is described from a morphological, histochemical and morphometric perspectives. A description of the morphological characteristics was conducted after dissections in different layers, down to the deep layer. Five muscles were found: superficial, medial, radial and deep adductors, and dorsal arrector. Their fibers were studied after applying histochemical techniques: succinic dehydrogenase (SDH) to reveal mitochondria, periodic acid-Schiff (PAS) for glycogen, Sudan black for lipids, myosin adenosinetriphosphatase (mATPase) to reveal the types of fibers, and modified mATPase to evidence the capillaries. Fiber diameters were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fin musculature; Histochemistry; Morphology; Morphometry; White croaker.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000600902
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