Record Display for the EPA National Library Catalog


Main Title Rosette Glands in the Gills of the Grass Shrimp, 'Palaemonetes pugio' I. Comparative Morphology, Cyclical Activity, and Innervation.
Author Doughtie, Daniel G. ; Rao, K. Ranga ;
CORP Author University of West Florida, Pensacola.;Environmental Research Lab., Gulf Breeze, FL.
Year Published 1982
Report Number EPA-R-807417; EPA-600/J-82-150 ; ERL.GB-0225
Stock Number PB82-207846
Additional Subjects Exocrine glands ; Shrimp ; Morphology ; Pathology ; Reprints ; Palaemonetes pugio ; Gills
Library Call Number Additional Info Location Last
NTIS  PB82-207846 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 29p
Two types of exocrine rosette glands (type A and type B), located in the gill axes of the grass shrimp, Palaemonetes pugio, are described. The type A glands are embedded within the longitudinal median spetum of the gill axes, whereas the type B glands typically project into the efferent hemolymph channels of the gill axes. Although both glands have certain common characteristics (i.e., a variable number of radially arranged secretory cells, a central intercalary cell, and a canal cell that forms the cuticular ductule leading to the brachial surface), they differ in the following respects. The type B gland is innervated, but type A is not; axonal processes, containing both granular (ca. 900-1300 A) and agranular (ca. 450-640 A) vesicles, occur at a juncture between adjacent secretory cells and the central cell of the type B gland. The secretory cells of type A and B differ in their synthetic potential and membrane glands, most frequently encountered in larger (24-28 mm, total length) grass shrimp, than in the underdeveloped, immature glands that are most abundant in smaller (14-18 mm, total length) grass shrimp. Thus, in mature glands, the secretory cells of type A are characterized by extensive RER, abundant Golgi, and numerous, secretory granules, whereas the secretory cells of type B are characterized by extensively infolded and interdigitated basal plasmalemmas and by the presence of numerous mitochondria.