A morphological study on gills of the brown shrimp, Penaeus aztecus.

Abstract:

:The gills of Penaeus aztecus were examined by light and electron microscopy. They are dendrobranchiate, consisting of a central axis with biserially arranged branches that subdivide into bifurcating filaments. A septum divides the lumina of these structures into afferent and efferent channels. Hemolymph from the sternal sinus flows through the afferent channels into the filaments where it is directed into the efferent channels and finally to the pericardial cavity. In addition to these channels, numerous blood vessels permeate the gill. The cuticle covering the gill overlies a thin epithelium which is separated from hemolymph by a basal lamina. The epithelium, which is active in cuticle secretion, has a series of pillar processes that form subcuticular lacunae. The apical membranes of epithelial cells become folded in shrimp exposed to hypo- and hyperosmotic salinities. Granular cells that contain elaborate Golgi apparati and several types of granules are present throughout the gill. Nephrocytes resembling glomerular podocytes line the efferent channels. A large nerve traverses the septum in the axis.

journal_name

Tissue Cell

journal_title

Tissue & cell

authors

Foster CA,Howse HD

doi

10.1016/0040-8166(78)90008-3

subject

Has Abstract

pub_date

1978-01-01 00:00:00

pages

77-92

issue

1

eissn

0040-8166

issn

1532-3072

pii

0040-8166(78)90008-3

journal_volume

10

pub_type

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