|
|
|
| Registros recuperados: 11 | |
|
|
| Chaves,Paulo de Tarso da Cunha; Vazzoler,Celso. |
| Foi descrita a constituição histológica do esófago, estômago e cecos pilóricos de Semaprochilodus insignis, um Characiforma de expressiva ocorrência na Amazônia central, onde é usualmente conhecido como "jaraqui escama-grossa". As camadas epitelial e muscular mostraram-se bastante variáveis de órgão para órgão, e mesmo em diferentes segmentos de um único órgão. O epitélio do esôfago é inicialmente estratificado pavimentoso e finalmente simples mucoso. O estômago compõe-se de uma porção descendente, revestida por glândulas gástricas, e uma ascendente, não-glandular. A camada muscular nestes dois órgãos sofre substituição gradual da estriada para a lisa, bem como a orientação dos feixes. Os cecos pilóricos, pequenos e numerosos, não apresentam nem... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1984 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671984000200343 |
| |
|
|
| Costa,Luciano; Chaves,Paulo de Tarso da Cunha. |
| O presente estudo foi realizado no litoral entre a divisa dos Estados do Paraná e Santa Catarina, em duas comunidades pesqueiras artesanais que integram os municípios de Guaratuba (PR) e Itapoá (SC). Foram acompanhadas as atividades pesqueiras das comunidades, entre julho de 2001 e março de 2003, com o objetivo de: listar as espécies de elasmobrânquios capturadas pelas comunidades em questão; avaliar o uso comercial das espécies; observar a ocorrência sazonal das espécies nos desembarques; estimar a freqüência relativa de captura por aparelho de pesca; e inferir sobre a biologia reprodutiva das espécies. Durante o período estudado foram capturados: Carcharhinus falciformis, Galeocerdo cuvier, Rhizoprionodon lalandii, R. porosus, Sphyrna lewini, S. zygaena,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Raias; Tubarões; Cações; Chondricthyes; Biologia reprodutiva. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000300007 |
| |
|
|
| Chaves,Paulo de Tarso da Cunha; Otto,Gislaine. |
| Diapterus rhombeus (Cuvier, 1829) is one of the most common Gerreidae species in the estuarine region at the Guaratuba Bay, Southern Brazil. Based on studies developed between July, 1993 and January, 1997, it was observed that its presence in the mangrove area is not regular: the smallest individuais are more abundam during late summer and in autumn, and the largest ones during spring and early summer. Its diet comprises plant material and invertebrates, specially polychaets. The morphological aspects of the gonads, the monthly changes on the Condition Factor, and lhe monthly distribution of the individual size groups, suggest that this population spawns during the spring, out the estuarine region. The smaller individuais use the mangrove area of Guaratuba... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diapterus rhombeus; Gerreidae; Guaratuba; Paraná; Brazil. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000200002 |
| |
|
|
| Vendel,Ana Lúcia; Chaves,Paulo de Tarso da Cunha. |
| Seasonal variation of food items of Bairdiella ronchus (Cuvier, 1830) classified by size was analysed based on monthly samples between september/1993 and september/1996 at the Guaratuba Bay, Southern Brazil. The stomach contents of a hundred eighty-two fishes were analysed by the Occunence Frequency Method and Point Count for a Lot Method. The individuais were divided in two groups, smaller and longer than 140mm, and a comparative study of digestive tract and branchial are was performed for these groups. For fishes smaller than 140mm the following sequence of items was obtained matching both methods by using the Preponderance índices: decapods (subdivided in Brachyura, Caridea and Penaeidea), polychaets, isopods, fishes, unidentified material, copepods,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet; Bairdiella ronchus; Sciaenidae; Guaratuba Bay. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000200003 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Chaves,Paulo de Tarso da Cunha. |
| Reproductive and biometrical analyses were pertormed on 1629 individuals of P. corvinaeformis collected monthly from October 1993 to September 1996, at Guaratuba Bay, Southern Brazilian coast. The results indicate that the species is more abundant in the mangrove area during winter, when the largest individuais were collected, and spring, when the water temperature is lower and the salinity higher than summer or autumn. The relationship of body weight to body length, for grouped sexes, is "lnTW= -12,0456 + 3,1831 lnTL". The monthly Condition Factor is highest during summer and lowest during winter. It is suggested that P. corvinaeformis is present in the mangrove area during a specific etape of its life cycle and does not use this area to maturation and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pomadasys corvinaeformis; Fishes; Mangrove; Guaratuba Bay; Brazil. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000100018 |
| |
|
|
| Chaves,Paulo de Tarso da Cunha; Vendei,Ana Lúcia. |
| Seasonal variation of the food items of the "bagre-urutu", Genidens genidens is analysed based on monthly samples between September, 1993 and April, 1995 at the Guaratuba Bay, coast of Paraná. The stomach contents of 105 fish is analysed by the Occurrence Frequency Method and 41 of these have also been analysed by the Volumetric Method. Matching both methods using the Preponderance índices, a larger incidence of decapods is determined, followed by other crustaceans, molluscs, polychaets, fish, and plant material. The data show the existence of a strong seasonal variation in the diet. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Guaratuba Bay; Estuary; Ariidae; Seasonal Variation; Diet. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300016 |
| |
|
|
| Chaves,Paulo de Tarso da Cunha. |
| Based on original and literature data, this study discusses the close relationship that seems to exist between the pre-ovulatory hydratation (POH) on fish oocytes and the marine environment, contrasting with the absence of this process on freshwater species. The difference is mainly explained by the necessity or not of intraoocitary water on eggs flutuation, in one or another situation, according to the surroundings. Once accepted this hipothesis, it is proposed that POH should be an efficient indicator of the adaptation to freshwater environment in fish species originated from marine groups. |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1989 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751989000300007 |
| |
| Registros recuperados: 11 | |
|
|
|
