The Experts below are selected from a list of 1023 Experts worldwide ranked by ideXlab platform

Patricia Jacqueline Thyssen - One of the best experts on this subject based on the ideXlab platform.

Antonio Cesar Rios Leite - One of the best experts on this subject based on the ideXlab platform.

  • salivary glands of second and third instars of Dermatobia hominis diptera oestridae
    Journal of Medical Entomology, 2007
    Co-Authors: L G Evangelista, Antonio Cesar Rios Leite
    Abstract:

    Salivary glands of Dermatobia hominis (L., Jr.) (Diptera: Oestridae) larvae were studied under light and electron microscopy. The salivary glands of second (L2) and third instars (L3) are similar and consist of pairs of translucent tubules. The individual efferent ducts unite to form a single deferent duct, which inserts dorsally into the cephalopharingeal skeleton. Each gland has a monolayer of epithelial cells surrounded by basement membrane and connective tissue. The cellular plasma membrane is enfolded at its base, forming a labyrinthine area. The cell surface is linked to the basement membrane (BM) by hemidesmosomes and to adjacent cells by septet junctions and desmosomes. Irregular channels with several vesicles occur between the cytoplasm and BM. Golgi complex, rough and smooth endoplasmic reticulum, ribosome, lysosomes, multivesicular bodies, and myelin figures are usually present in the cells. The nucleus is large, with diffuse chromatin. The connective tissue circling the BM contains collagen fibrils, muscle fibers and tracheal tubes. Lined cuticle encloses the efferent and deferent ductal cells, which have few, widely dispersed mitochondria, free ribosomes, microtubules, and a large nucleus with diffuse chromatin.

  • midgut ultrastructure of the third instar of Dermatobia hominis diptera cuterebridae based on transmission electron microscopy
    Journal of Medical Entomology, 2003
    Co-Authors: L G Evangelista, Antonio Cesar Rios Leite
    Abstract:

    The midgut ultrastucture of the third-instar of Dermatobia hominis (L., Jr.) was investigated using transmission electron microscopy (TEM). The tubular midgut bears a monolayer of epithelial cells with the plasma membrane showing multiple folding where it adjoins the basement membrane. Septate junctions bound the epithelial cells on each side. These cells have electrolucent cytoplasm containing mitochondria, vacuoles, rough and smooth endoplasmic reticula, lamellar bodies, and a prominent nucleus with dispersed chromatin. The peritrophic matrix is close to elongate microvilli, which are sometimes forked. Regenerative cells, in an undifferentiated state when closest to the basement membrane, are scattered throughout the epithelial cells. A thick basement membrane, surrounded by thick connective tissue including muscle, tracheal tubes, and extracellular matrix is linked to epithelial cells by hemidesmosome-like structures. Entero-endocrine, goblet or cuprophilic cells were not observed.

Bárbara Maria Cerqueira Maia - One of the best experts on this subject based on the ideXlab platform.

Gonzalo Efrain Moya Borja - One of the best experts on this subject based on the ideXlab platform.

  • flutuacao sazonal de Dermatobia hominis em peles bovinas oriundas de matadouro
    Pesquisa Veterinaria Brasileira, 2000
    Co-Authors: Luciana G Brito, Gonzalo Efrain Moya Borja
    Abstract:

    The effect of temperature, rainfall and relative humidity on the seasonal fluctuation of Dermatobia hominis was investigated by counting the parasitized skins of slaughtered cattle at the abattoir of Pirai county, in the state of Rio de Janeiro, Brazil, from November 1995 to October 1997. The higher incidence of parasitized skins was observed in November 1995 and December 1996. Secondary peaks were observed in March and May 1996 and March 1997. High percentage of parasitism in skins through the summer seasons was associated with mean temperatures of 25°C and rainfall of 200 mm. The larval populations declined in both years from June to October, probably due to low temperatures at an average between 21oC and 22.5oC, and to low rainfall (under 50 mm). In a total of 5,142 skins checked in the 2-year study, 2,710 skins (52.7%) were parasitized with D. hominis larvae.

  • descricao inedita de fannia sp diptera fanniidae como vetor dos ovos de Dermatobia hominis diptera cuterebridae em seropedica rj
    Revista Brasileira de Ciência Veterinária, 1999
    Co-Authors: Virginia Pereira Silva, Andre Souza Leandro, Gonzalo Efrain Moya Borja
    Abstract:

    Descreve-se a ocorrencia inedita de um exemplar femea de Fannia sp., capturado em Seropedica, Rio de Janeiro,carreando 1 o ovos de Dermatobia hominis, no lado esquerdo do abdomen. O exemplar encontrava-se pousado sobre umbovino, sendo capturado com rede entomologica.

  • ocorrencia do berne Dermatobia hominis diptera cuterebridae em varios hospedeiros no rio de janeiro brasil
    Parasitología al día, 1998
    Co-Authors: Virginio Pereira Silva, Andre Souza Leandro, Gonzalo Efrain Moya Borja
    Abstract:

    OCCURRENCE OF BERNE, Dermatobia hominis (DIPTERA: CUTEREBRIDAE) IN SEVERAL HOST, IN THE RIO DE JANEIRO, BRAZIL The authors describe cases of hosts with infestation Dermatobia hominis larvae in Rio de Janeiro, Brazil. Larvae were observed in swine, caprine, canine, feline and man. The study have importance because larvae location in swine ear and in dog prepuce, and this animals dont common host. The observation were develop in region with great incidence of berne in bovines. A review from occurrence the D. hominis in this species were describe

L G Evangelista - One of the best experts on this subject based on the ideXlab platform.

  • salivary glands of second and third instars of Dermatobia hominis diptera oestridae
    Journal of Medical Entomology, 2007
    Co-Authors: L G Evangelista, Antonio Cesar Rios Leite
    Abstract:

    Salivary glands of Dermatobia hominis (L., Jr.) (Diptera: Oestridae) larvae were studied under light and electron microscopy. The salivary glands of second (L2) and third instars (L3) are similar and consist of pairs of translucent tubules. The individual efferent ducts unite to form a single deferent duct, which inserts dorsally into the cephalopharingeal skeleton. Each gland has a monolayer of epithelial cells surrounded by basement membrane and connective tissue. The cellular plasma membrane is enfolded at its base, forming a labyrinthine area. The cell surface is linked to the basement membrane (BM) by hemidesmosomes and to adjacent cells by septet junctions and desmosomes. Irregular channels with several vesicles occur between the cytoplasm and BM. Golgi complex, rough and smooth endoplasmic reticulum, ribosome, lysosomes, multivesicular bodies, and myelin figures are usually present in the cells. The nucleus is large, with diffuse chromatin. The connective tissue circling the BM contains collagen fibrils, muscle fibers and tracheal tubes. Lined cuticle encloses the efferent and deferent ductal cells, which have few, widely dispersed mitochondria, free ribosomes, microtubules, and a large nucleus with diffuse chromatin.

  • midgut ultrastructure of the third instar of Dermatobia hominis diptera cuterebridae based on transmission electron microscopy
    Journal of Medical Entomology, 2003
    Co-Authors: L G Evangelista, Antonio Cesar Rios Leite
    Abstract:

    The midgut ultrastucture of the third-instar of Dermatobia hominis (L., Jr.) was investigated using transmission electron microscopy (TEM). The tubular midgut bears a monolayer of epithelial cells with the plasma membrane showing multiple folding where it adjoins the basement membrane. Septate junctions bound the epithelial cells on each side. These cells have electrolucent cytoplasm containing mitochondria, vacuoles, rough and smooth endoplasmic reticula, lamellar bodies, and a prominent nucleus with dispersed chromatin. The peritrophic matrix is close to elongate microvilli, which are sometimes forked. Regenerative cells, in an undifferentiated state when closest to the basement membrane, are scattered throughout the epithelial cells. A thick basement membrane, surrounded by thick connective tissue including muscle, tracheal tubes, and extracellular matrix is linked to epithelial cells by hemidesmosome-like structures. Entero-endocrine, goblet or cuprophilic cells were not observed.