NDLI: Morphology of the Pylorus of Bombyx mori (Linnaeus) (Lepidoptera: Bombycidae)

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Neotropical Entomology : Volume 43, Issue 3, June 2014

Neotropical Entomology : Volume 43, Issue 2, April 2014

Neotropical Entomology : Volume 43, Issue 1, February 2014

Neotropical Entomology : Volume 42

Neotropical Entomology : Volume 41

Morphology of the Pylorus of Bombyx mori (Linnaeus) (Lepidoptera: Bombycidae)

Content Provider	Springer Nature Link
Author	Brancalhão, R M C Baggio, M P D Vessaro Silva, S A Ribeiro, L F C
Copyright Year	2014
Abstract	The pylorus is a segment of the hindgut of great morphological diversity, which is subdivided into the posterior interstitial ring, pyloric cone, and pyloric valve. There is no morphological information on Bombyx mori (L.) hybrids, which is an insect of economic interest to Brazil. Consequently, this study aimed to analyze the morphology of the pylorus of hybrid larvae of fifth instars of B. mori from crossbreeding of Chinese and Japanese races. These were anesthetized, and the pylorus was fixed and processed by light microscopy and scanning electron microscopy. The pylorus presented as a separate compartment, consisting of a simple epithelium, with large variation in cell morphology, covered on the luminal side by an intima with specializations in some areas, the spicules. The musculature was formed by bundles of striated muscle fibers in longitudinal and circular arrangement. These fibers were multinucleated with central and peripheral nuclei, operating in peristalsis. The morphology of the pylorus is a reflection of functional dynamism, and this study provided a better understanding of its physiology, which promotes the regulated movement of the bolus, preventing reflux and directing it towards the ileum in the formation of fecal pellets.
Starting Page	344
Ending Page	349
Page Count	6
File Format	PDF
ISSN	1519566X
Journal	Neotropical Entomology
Volume Number	43
Issue Number	4
e-ISSN	16788052
Language	English
Publisher	Springer US
Publisher Date	2014-04-25
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Life Sciences pyloric valve posterior interstitial ring Hindgut Entomology Agriculture spicules pyloric cone
Content Type	Text
Resource Type	Article
Subject	Insect Science

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