The moult cycle of the terrestrial isopod Armadillo officinalis Duméril, 1816 (Crustacea: Isopoda: Oniscidea)

2017 ◽  
Vol 99 (3) ◽  
pp. 263-273 ◽  
Author(s):  
Giuseppe Montesanto ◽  
Sofia Cividini
Keyword(s):  
Moult Cycle ◽  
Terrestrial Isopod

Structural organization of neurosecretory cells terminating in the sinus gland of the terrestrial isopod, Oniscus asellus, revealed by paraldehyde fuchsin and cobalt backfilling

1985 ◽  
Vol 63 (3) ◽  
pp. 543-549 ◽  
Author(s):  
R. G. Chiang ◽  
C. G. H. Steel
Keyword(s):  
Optic Lobe ◽  
Neurosecretory Cells ◽  
Neurosecretory System ◽  
Cell Group ◽  
Moult Cycle ◽  
Sinus Gland ◽  
Β Cells ◽  
Terrestrial Isopod ◽  
Medial Side ◽  
The Brain

The morphology of the brain – sinus gland neurosecretory system in the terrestrial isopod, Oniscus asellus, is described with paraldehyde fuchsin and with cobalt backfilling of the sinus gland. Paraldehyde fuchsin stained the A, B, and β cells located medially in the protocerebrum and the γ cells located in the optic lobe. Cobalt applied to the sinus gland delineates an axon tract that extends from the sinus gland medially along the posterior surface of the protocerebrum and descends into the protocerebrum at the level of the central protocerebral neuropile. Cobalt backfilled to the B, β, and γ cells but not to the A cells. One cell group located distally to the most distal optic lobe neuropile filled with cobalt, but was not stained with paraldehyde fuchsin. It is argued that the B and β cells together comprise the equivalent of the decapod "X-organ." Varicosities, which may represent additional storage and (or) release sites for neurosecretion, appear in the axon tract over the region of the optic lobe. Extensive dendritic arborizations of the B and β cells occur along the anterior-medial side of the central protocerebral neuropile. Additional arborizations of these cells occur in the contralateral protocerebral lobe, suggesting a pathway for neural coordination of left and right sinus glands. Further observations on changes in the staining properties of the β and γ cells during the moult cycle suggest the involvement of β cells with moulting and the involvement of γ cells with egg development.

scholarly journals MECHANISMS OF COORDINATION BETWEEN MOULTING AND REPRODUCTION IN TERRESTRIAL ISOPOD CRUSTACEA

1980 ◽  
Vol 159 (1) ◽  
pp. 206-218 ◽  
Author(s):  
C. G. H. STEEL
Keyword(s):  
Terrestrial Isopod

Intraspecific morphological variation related to the moult-cycle in colour forms of the shore crabCarcinus maenas

1992 ◽  
Vol 228 (2) ◽  
pp. 351-359 ◽  
Author(s):  
I. J. McGaw ◽  
M. J. Kaiser ◽  
E. Naylor ◽  
R. N. Hughes
Keyword(s):  
Morphological Variation ◽  
Moult Cycle ◽  
Intraspecific Morphological Variation

TIME-DEPENDENT TOXICOKINETICS OF [14C]LINDANE IN THE TERRESTRIAL ISOPOD PORCELLIONIDES PRUINOSUS

2003 ◽  
Vol 22 (10) ◽  
pp. 2221 ◽  
Author(s):  
Sónia A.P. Santos ◽  
José P. Sousa ◽  
Matthias Frost ◽  
Amadeu M.V.M. Soares
Keyword(s):  
Time Dependent ◽  
Terrestrial Isopod

The energetics of reproduction and parental care in the terrestrial isopod Porcellio laevis

2004 ◽  
Vol 50 (12) ◽  
pp. 1127-1135 ◽  
Author(s):  
Marco A. Lardies ◽  
Ivania S. Cotoras ◽  
Francisco Bozinovic
Keyword(s):  
Parental Care ◽  
Terrestrial Isopod ◽  
Porcellio Laevis

Molecular characterization of calreticulin gene in mud crabScylla paramamosain(Estampador): implications for the regulation of calcium homeostasis during moult cycle

2015 ◽  
Vol 47 (10) ◽  
pp. 3276-3286 ◽  
Author(s):  
Binpeng Xu ◽  
Chen Long ◽  
Weiren Dong ◽  
Qingjun Shao ◽  
Miaoan Shu
Keyword(s):  
Molecular Characterization ◽  
Calcium Homeostasis ◽  
Moult Cycle

Modelling growth and reproduction of Antarctic krill, Euphausia superba, based on temperature, food and resource allocation amongst life history functions

2017 ◽  
Vol 75 (2) ◽  
pp. 738-750 ◽  
Author(s):  
Andrew John Constable ◽  
So Kawaguchi
Keyword(s):  
Antarctic Krill ◽  
Growth Models ◽  
Euphausia Superba ◽  
Day Length ◽  
Moult Cycle ◽  
High Production ◽  
Over Exploitation ◽  
Increasing Temperature ◽  
Antarctic Krill Euphausia Superba ◽  
Growth And Reproduction

Abstract Estimates of productivity of Antarctic krill, Euphausia superba, are dependent on accurate models of growth and reproduction. Incorrect growth models, specifically those giving unrealistically high production, could lead to over-exploitation of the krill population if those models are used in setting catch limits. Here we review available approaches to modelling productivity and note that existing models do not account for the interactions between growth and reproduction and variable environmental conditions. We develop a new energetics moult-cycle (EMC) model which combines energetics and the constraints on growth of the moult-cycle. This model flexibly accounts for regional, inter- and intra-annual variation in temperature, food supply, and day length. The EMC model provides results consistent with the general expectations for krill growth in length and mass, including having thin krill, as well as providing insights into the effects that increasing temperature may have on growth and reproduction. We recommend that this new model be incorporated into assessments of catch limits for Antarctic krill.

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