Fine structure of the alimentary canal of the larval blow fly Chrysomya megacephala (Diptera: Calliphoridae)

Morphology of the alimentary canal of the mature third instar larva of the blow fly, Chrysomya megacephala (F.), was examined using light, scanning, and transmission electron microscopy. Salivary structures consist of a single median deferent duct that bifurcates into efferent ducts connected to pai...

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Main Authors: Boonsriwong W., Sukontason K., Olson J.K., Vogtsberger R.C., Chaithong U., Kuntalue B., Ngern-Klun R., Upakut S., Sukontason K.L.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-33845766183&partnerID=40&md5=32766ddb15fb8a3c8787baab38191e01
http://www.ncbi.nlm.nih.gov/pubmed/17102987
http://cmuir.cmu.ac.th/handle/6653943832/5314
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-53142014-08-30T02:56:24Z Fine structure of the alimentary canal of the larval blow fly Chrysomya megacephala (Diptera: Calliphoridae) Boonsriwong W. Sukontason K. Olson J.K. Vogtsberger R.C. Chaithong U. Kuntalue B. Ngern-Klun R. Upakut S. Sukontason K.L. Morphology of the alimentary canal of the mature third instar larva of the blow fly, Chrysomya megacephala (F.), was examined using light, scanning, and transmission electron microscopy. Salivary structures consist of a single median deferent duct that bifurcates into efferent ducts connected to paired, tubular salivary glands comprised of closely packed conical-shaped epithelial cells with large nuclei. The crop occurs as a large, swollen diverticulum of the digestive tube and is lined internally with convoluted cuticle (epicuticle and endocuticle). The esophagus is a simple, straight tube internally lined with cuticle and externally encompassed by muscle fibers. The cardia is a bulb-like structure composed of anterior foregut tissue and posterior midgut tissue from which the peritrophic membrane (PM) is produced. The midgut begins within the cardia which is flanked posteriorly by four tubular gastric caeca that are lined internally with four to five layers of cuboidal epithelial cells bearing microvilli. Midgut tissue is lined with simple cuboidal epithelium whose cells are filled with numerous secretory granules and possessed long microvilli facing the lumen. A peritrophic membrane is contained within the midgut lumen. The larval hindgut consists of the pylorus, Malpighian tubules, ileum, colon, rectum, and anus, posteriorly. The pylorus is characterized by a single layer of epithelial cells encircled by a muscular layer and the presence of PM within the lumen. Malpighian tubules each diverge into two tubular structures totalling four long tubules of long chained cuboidal cells bearing microvilli internally. The wall of the ileum is comprised primarily of a monolayer of cuboidal epithelial cells with large oval nuclei and more intense muscular fibers surrounding the periphery. A cuticular layer surrounds the lumen containing the PM. This inner cuticle consists of a thin epicuticle that is electron-dense; whereas, the endocuticle is much thicker but less electron-dense. Myo-epithelial cells are dense in the anal region, where the PM persists. © 2006 Springer-Verlag. 2014-08-30T02:56:24Z 2014-08-30T02:56:24Z 2007 Article 09320113 10.1007/s00436-006-0363-0 17102987 PARRE http://www.scopus.com/inward/record.url?eid=2-s2.0-33845766183&partnerID=40&md5=32766ddb15fb8a3c8787baab38191e01 http://www.ncbi.nlm.nih.gov/pubmed/17102987 http://cmuir.cmu.ac.th/handle/6653943832/5314 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description Morphology of the alimentary canal of the mature third instar larva of the blow fly, Chrysomya megacephala (F.), was examined using light, scanning, and transmission electron microscopy. Salivary structures consist of a single median deferent duct that bifurcates into efferent ducts connected to paired, tubular salivary glands comprised of closely packed conical-shaped epithelial cells with large nuclei. The crop occurs as a large, swollen diverticulum of the digestive tube and is lined internally with convoluted cuticle (epicuticle and endocuticle). The esophagus is a simple, straight tube internally lined with cuticle and externally encompassed by muscle fibers. The cardia is a bulb-like structure composed of anterior foregut tissue and posterior midgut tissue from which the peritrophic membrane (PM) is produced. The midgut begins within the cardia which is flanked posteriorly by four tubular gastric caeca that are lined internally with four to five layers of cuboidal epithelial cells bearing microvilli. Midgut tissue is lined with simple cuboidal epithelium whose cells are filled with numerous secretory granules and possessed long microvilli facing the lumen. A peritrophic membrane is contained within the midgut lumen. The larval hindgut consists of the pylorus, Malpighian tubules, ileum, colon, rectum, and anus, posteriorly. The pylorus is characterized by a single layer of epithelial cells encircled by a muscular layer and the presence of PM within the lumen. Malpighian tubules each diverge into two tubular structures totalling four long tubules of long chained cuboidal cells bearing microvilli internally. The wall of the ileum is comprised primarily of a monolayer of cuboidal epithelial cells with large oval nuclei and more intense muscular fibers surrounding the periphery. A cuticular layer surrounds the lumen containing the PM. This inner cuticle consists of a thin epicuticle that is electron-dense; whereas, the endocuticle is much thicker but less electron-dense. Myo-epithelial cells are dense in the anal region, where the PM persists. © 2006 Springer-Verlag.
format Article
author Boonsriwong W.
Sukontason K.
Olson J.K.
Vogtsberger R.C.
Chaithong U.
Kuntalue B.
Ngern-Klun R.
Upakut S.
Sukontason K.L.
spellingShingle Boonsriwong W.
Sukontason K.
Olson J.K.
Vogtsberger R.C.
Chaithong U.
Kuntalue B.
Ngern-Klun R.
Upakut S.
Sukontason K.L.
Fine structure of the alimentary canal of the larval blow fly Chrysomya megacephala (Diptera: Calliphoridae)
author_facet Boonsriwong W.
Sukontason K.
Olson J.K.
Vogtsberger R.C.
Chaithong U.
Kuntalue B.
Ngern-Klun R.
Upakut S.
Sukontason K.L.
author_sort Boonsriwong W.
title Fine structure of the alimentary canal of the larval blow fly Chrysomya megacephala (Diptera: Calliphoridae)
title_short Fine structure of the alimentary canal of the larval blow fly Chrysomya megacephala (Diptera: Calliphoridae)
title_full Fine structure of the alimentary canal of the larval blow fly Chrysomya megacephala (Diptera: Calliphoridae)
title_fullStr Fine structure of the alimentary canal of the larval blow fly Chrysomya megacephala (Diptera: Calliphoridae)
title_full_unstemmed Fine structure of the alimentary canal of the larval blow fly Chrysomya megacephala (Diptera: Calliphoridae)
title_sort fine structure of the alimentary canal of the larval blow fly chrysomya megacephala (diptera: calliphoridae)
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-33845766183&partnerID=40&md5=32766ddb15fb8a3c8787baab38191e01
http://www.ncbi.nlm.nih.gov/pubmed/17102987
http://cmuir.cmu.ac.th/handle/6653943832/5314
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