𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Identification of the Y-organ in the larval stages of the crab, Cancer anthonyi Rathbun

✍ Scribed by John R. McConaugha

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
556 KB
Volume
164
Category
Article
ISSN
0362-2525

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The Y‐organ has been histologically identified in all six larval stages of the crab, Cancer anthonyi. The paired glands are located anterior to the branchial chamber and ventral to the base of the antennules. In the first zoeal stage the gland consists of a cord of 6 to 10 epidermal cells with dark staining nuclei, sparse cytoplasm, and indistinct cell boundaries. As development progresses the glands become more complex through extensive folding and intertwining of the cellular cords. The glands in all larval stages show cyclical activity which corresponds to the molt cycle. Immediately following a molt the gland is dense and compact with little cytoplasm. At approximately day four in the molt cycle, the glands become greatly hyperthropied due to an increase in the number and size of the cytoplasmic vacuoles. These histological changes suggests a cyclical production and presumably the release of some product most likely ecdysone.

πŸ“œ SIMILAR VOLUMES

Comparative stages in the spermatogenesi
Comparative stages in the spermatogenesis of various Cancer crabs
✍ Nathan Fasten πŸ“‚ Article πŸ“… 1924 πŸ› John Wiley and Sons 🌐 English βš– 675 KB

## Introduction In a previous paper (Biological Bulletin, vol. 34, no. 5, May, 1918) I traced the spermatogenesis of the edible crab of the Pacific coast, Cancer magister Dana. I n the present article various stages in the spermatogenesis of three other species of Cancer crabs, namely, Cancer prod

Neurogenesis in larval stages of the spi
Neurogenesis in larval stages of the spider crab Hyas araneus (Decapoda, Brachyura): proliferation of neuroblasts in the ventral nerve cord
✍ Harzsch, Steffen ;Dawirs, Ralpf R. πŸ“‚ Article πŸ“… 1994 πŸ› Springer-Verlag 🌐 English βš– 914 KB

Larvae of the spider crab Hyas araneus were reared in the laboratory from hatching through to metamorphosis. Neurogenesis was recorded in the ventral nerve cord during development of successive larval stages, zoea 1, zoea 2, megalopa and crab 1. Proliferating cells were detected immunocytochemically

Regulation of protein synthesis in Y-org
Regulation of protein synthesis in Y-organs of the blue crab (Callinectes sapidus): involvement of cyclic AMP
✍ Han, Deug-Woo ;Patel, Nimisha ;Douglas Watson, R. πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 146 KB

## Abstract Paired Y‐organs secrete ecdysteroid hormones that control cycles of growth and molting in crustaceans. Y‐Organs are regulated, at least in part, by molt‐inhibiting hormone (MIH), a polypeptide produced and released by the X‐organ/sinus gland complex of the eyestalks. In the present stud