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| Registros recuperados: 15 | |
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| Ivanovic, M.L.; Brunetti, N.E.. |
| The morphology and histology of the digestive tract of the Argentine short-finned squid Illex argentinus are described. The structures involved are the buccal mass, oesophagus, vestibulum, stomach, caecum, intestine, digestive gland and digestive duct appendages. A differential development of the tissular components in relation to the function of each organ is observed. The musculature of the buccal mass, oesophagus and stomach, organs involved in the mechanical degradation of food is strongly developed. This development is weaker in the caecum where enzymatic digestion and absorption take place and in the intestine. For the same reason, the epithelia of the mucosae of the oesophagus and stomach secrete a thick cuticle whereas those of the caecum and... |
| Tipo: Journal Contribution |
Palavras-chave: Digestive system; Organism morphology; Histology; Digestive system; Http://aims.fao.org/aos/agrovoc/c_2275. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/1582 |
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| Cuartas, E.I.; Díaz, A.C.; Petriella, A.M.. |
| The decapod crustacean hepatopancreas is a conspicuous and bilobated gland composed of simple, blind-ended tubules, which opens into the pyloric stomach. The gland is completely surrounded by connective tissue which limits also the tubules. In this work midgut gland cells of Argentine shrimp Pleoticus muelleri were investigated under light microscopy. Each tubule has three defined zones: distal, middle and proximal. Four cell types, E-cells (embryonic), F (fibrillar), R (resorptive) and B (secretory) form the epithelium. The histology of the hepatopancreas of P. muelleri is described, emphasizing the particularities in this species whose general features can be compared to that of other decapod crustaceans. |
| Tipo: Journal Contribution |
Palavras-chave: Hepatopancreas; Histology; Organism morphology; Hepatopancreas; Http://aims.fao.org/aos/agrovoc/c_34294. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/1702 |
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| Cruz, M.. |
| Del análisis de 17 muestras del zooplancton, tomadas en el Golfo de Guayaquil, de 4 cruceros correspondientes a Mayo de 1973, Febrero de 1978, Marzo 1982 y Noviembre 1983, se encontraron 5 especies de Pterópodos y 2 de Heterópodos, que son: Creseis chierchiae, C. acicula, Limacina trochiformis, L. inflata, Atlanta gaudichaudi y a. lessueuri. Se da una descricpión morfológica general del organismo, resaltando sus características taxonómicas más importantes de la especie y se complementa con algunas preferencias ecológicas de cada una de ellas. Se presenta un mapa con las estaciones de los diferentes cruceros y dos tablas mostrando la posición y la presencia de las especies en los diferentes años. |
| Tipo: Journal Contribution |
Palavras-chave: Organism morphology; Marine molluscs; Geographical distribution; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_5083. |
| Ano: 1983 |
URL: http://hdl.handle.net/1834/2144 |
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| Balech, E.; Akselman, R.; Negri, R.M.. |
| The present work is a supplement of the monography "The dinoflagellates of the Southwestern Atlantic" by E. Balech (in press). Eightenn species belonging to the genera Ceratium, Dinophysis, Diplopelta, Gonyaulax, Heterochisma. Oblea, Oxyphysis, and Protoperidinium are discussed on accurt of their presence, up to the present unknown in the area. Comments on their geographical distributions, ecological requirements and morphological details are included in the work. |
| Tipo: Journal Contribution |
Palavras-chave: Organism morphology; Geographical distribution; New records; Phytoplankton; Geographical distribution; Phytoplankton; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_13344. |
| Ano: 1984 |
URL: http://hdl.handle.net/1834/2042 |
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| Registros recuperados: 15 | |
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