The nucleus is restricted to the basal region of the cell and the apical cytoplasm contains numerous small vacuoles that seem to be released by apocrine secretion. [ Links ], Hirsch, G. C. & Jacobs, W. Der Arbeitsrhythmus der Mitteldarmdrilse von Astacus leptodactylus. The cytoplasm is basophilic and contains a round central nucleus (Fig. History and global status of freshwater prawn farming. ), Freshwater Prawn Farming: The Farming of Macrobrachium rosenbergii. The nucleus is centrally located. J. Mar. revistas de investigación científica y social, Citoarquitectura del hepatopáncreas del camarón Artemesia longinaris Bate (Crustacea, Decapoda, Penaeidae), Distribution of articles by age of the cited document, Distribution of articles by cited document type. Similar results are described for Penaeus spp. The dorsal and ventral secondary tubules derive from the medial portion of the principal tubule (Fig. B. [ Links ], Van Weel, P. B. Hepatopancreas?. The hepatopancreas is a large, yellowish-brown, compact organ, which occupies much of the cephalothoracic cavity, posterior to the cardiac portion of the stomach. Each duct branches into many hepatopancreatic tubules, which comprise the hepatopancreas (Johnston et al; Souza & Petriella). Citoarquitectura del hepatopáncreas del camarón Artemesia longinaris Bate (Crustacea, Decapoda, Penaeidae) Thirty adult male and female M. amazonicum were selected and randomly transferred to five experimental units (six individuals per experimental unit). However, there is little information available about this organ in caridean prawns. 4:34. [ Links ], Lovett, D. L. & Felder, D. L. Ontogeny of gut morphology in the white shrimp Penaeus setiferus (Decapoda, Penaeidae). The hepatopancreas is morphologically similar in most decapods (Gibson & Barker; Al-Mohanna & Nott, 1987; 1989; Caceci et al). All the hepatopancreatic tubules are lined with a pseudostratified epithelium with the same cell types. »!Ñ!A“c’h)I0Ù…ôÕdS.%bÕ)ÊÚµp@WS˜( ôÿ§ÊO0TbÍiÃE—¨h�œ‡ÉL©ÂÌgĵÜ�ÎÜ@}¾,6ÿnl_4ìwH*[=�dyğŒ3hñóÛøiŸ}說:A�‰+ªU“Ã×9¾ˆ™ŒúèÚ•v±€ğWV.7hSurIŞÁ…+³ÜÕ¹°. However, in P. semisulcatus, B-cells occur in the proximal region of the hepatopancreatic tubules (Al-Mohanna & Nott, 1989). [ Links ], Icely, J. D. & Nott, J. J. Morphol, 769:225-58, 1981. Oceanogr. The metabolism and the histological and histochemical changes of the hepatopancreas are observed in response to physiological demands: moult, reproduction, digestive process (Icely & Nott; Vogt et al., 1985; Johnston et al.). [ Links ], Drake, R.; Vogl, W. & Mitchell, A. W. M. Gray's Anatomy for Students. The animals were maintained in the experimental units and received no food for 48 h. After this period, they were killed by thermal shock. Four cell types have been consistently identified in the epithelium of the decapod hepatopancreas. 2. This work was supported by a Grant of the Conselho Nacional de Desenvolvimento Científico e Tecnológio -CNPq (140151/2003-6 and 131456/2004-0) and FUNDUNESP. Aquaculture, 48:1-12, 1985. TÉCNICAS DE SIEMBRA DE LARVAS DE CAMARÓN - Duration: 17:49. J. Mar. The principal tubule gives rise to four secondary tubules at each hepatopancreatic lobe. M-cells have been observed in the hepatopancreatic tubule of P. semisulcatus (Al-Mohanna et al., 1985; Al-Mohanna & Nott, 1987; 1989) and H. americanus (Icely & Nott). [ Links ], Arnaud, J.; Brunet, M. & Mazza, J. Cytochemical detection of phosphatase and arylsulphatase activities in the midgut of Centropages typicus (Copepod, Calanoid). 1). Studies on the midgut of Centropages typicus (Copepod, Calanoid). (Ed. M-cells mature progressively toward to the proximal end of the hepatopancreatic tubule, but changes in structure are linked more with phases in the molt cycle rather than in the feeding cycle (Al-Mohanna & Nott, 1987). Histological section of Macrobrachium amazonicum hepatopancreas (WE).
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