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Morphology and histology of P. argentinus (Crustacea, Decapoda, Caridea) digestive tract

LILIANA SOUSA1, ANA MARÍA PETRIELLA1,2

Depto. de Ciencias Marinas, Facultad de Ciencias Exactas y Naturales, UNMP. Mar del Plata, Argentina.
CONICET.
Address correspondence to: Dra. Liliana Sousa. Dpto. de Ciencias Marinas, Facultad de Ciencias Exactas y Naturales, UNMP. Funes 3350. B7602AYL. Mar del Plata, ARGENTINA. E-mail: lgsou@mdp.edu.ar

BIOCELL 2006, 30(2), 287-294. https://doi.org/10.32604/biocell.2006.30.287

Abstract

This work describes the morphology and histology of the P. argentinus digestive tract. The foregut comprises the mouth, oesophagus, and stomach and is lined by a simple cylindrical epithelium overlain by cuticle. There are tegumental glands in the oral region and in the first portion of the oesophagus and of the hindgut. The cardiac stomach is an oval dorsal sac in the cephalothorax and has no calcified structures. The pyloric stomach comprises an upper chamber and a lower gland filter. The filter consists of an outer row of elongated setae and an inner row of dorsally curved setae forming longitudinal channels 16-18μm wide. The midgut runs from the dorsal chamber of the pyloric stomach to the sixth abdominal somite without caeca. The hindgut runs from the sixth abdominal somite to the ventral anus. The mid-gut epithelium comprises dominant cylindrical cells and small undifferentiated cells in the first portion. The hindgut wall presents longitudinal folds, conspicuous muscular bundles, and a folded cuticle. The digestive tract of P. argentinus is basically similar to that of most of decapods. The absence of calcified structures in the stomach and the width of the longitudinal channels in the filter are related to the predominantly detritivorous diet.

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APA Style
SOUSA, L., PETRIELLA, A.M. (2006). Morphology and histology of p. argentinus (crustacea, decapoda, caridea) digestive tract. BIOCELL, 30(2), 287-294. https://doi.org/10.32604/biocell.2006.30.287
Vancouver Style
SOUSA L, PETRIELLA AM. Morphology and histology of p. argentinus (crustacea, decapoda, caridea) digestive tract. BIOCELL . 2006;30(2):287-294 https://doi.org/10.32604/biocell.2006.30.287
IEEE Style
L. SOUSA and A.M. PETRIELLA, "Morphology and histology of P. argentinus (Crustacea, Decapoda, Caridea) digestive tract," BIOCELL , vol. 30, no. 2, pp. 287-294. 2006. https://doi.org/10.32604/biocell.2006.30.287

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cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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