Review of the reproductive biology of amphipods and their endocrine regulation: Identification of mechanistic pathways for reproductive toxicants

Ross V. Hyne

doi:10.1002/etc.673

Review of the reproductive biology of amphipods and their endocrine regulation: Identification of mechanistic pathways for reproductive toxicants

Environmental Toxicology and Chemistry ◽

10.1002/etc.673 ◽

2011 ◽

Vol 30 (12) ◽

pp. 2647-2657 ◽

Cited By ~ 44

Author(s):

Ross V. Hyne

Keyword(s):

Reproductive Biology ◽

Endocrine Regulation ◽

Reproductive Toxicants

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Reproductive biology and endocrine regulation of final oocyte maturation of captive white bass

Journal of Fish Biology ◽

10.1111/j.1095-8649.1997.tb01662.x ◽

1997 ◽

Vol 51 (2) ◽

pp. 234-250 ◽

Cited By ~ 31

Author(s):

C. C. Mylonas ◽

Y. Magnus ◽

Y. Klebanov ◽

A. Gissis ◽

Y. Zohar

Keyword(s):

Reproductive Biology ◽

Oocyte Maturation ◽

Endocrine Regulation ◽

White Bass ◽

Final Oocyte Maturation

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Exploring endocrine regulation of sea urchin reproductive biology: effects of 17ß-oestradiol

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315411001731 ◽

2012 ◽

Vol 92 (6) ◽

pp. 1419-1426 ◽

Cited By ~ 6

Author(s):

Michela Sugni ◽

Daphne Motta ◽

Paolo Tremolada ◽

Maria Daniela Candia Carnevali

Keyword(s):

Reproductive Biology ◽

Lipid Content ◽

Sea Urchins ◽

Gonad Index ◽

Paracentrotus Lividus ◽

Maturation Stage ◽

Endocrine Regulation ◽

The Common ◽

Definitive Role

Although several authors have suggested a plausible involvement of steroids in the reproductive biology of echinoderms, their definitive role is still poorly understood. In this paper we focused on oestradiol (E2), whose presence and variations were previously revealed in different echinoderm tissues. The aim of this investigation was to provide further information on the scarcely known role of this hormone in the reproductive biology of sea urchins. We injected two different concentrations (5 ng ml−1 and 50 ng ml−1) of 17ß-oestradiol into specimens of the common Paracentrotus lividus for 10 weeks. The E2 treatment did not influence the maturation stage of the gonads and the development of the gametes; it caused a slight decrease in the gonad index and an increase in lipid content. Our present results suggest that E2 could have a function different from that reported for vertebrates and suggested for other echinoderms such as asteroids.

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Fine structure and possible functions of the hermaphrodite duct of some pulmonate snails (Mollusca: Gastropoda)

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100157887 ◽

1990 ◽

Vol 48 (3) ◽

pp. 68-69

Author(s):

Alan N. Hodgson

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Fine Structure ◽

Seminal Vesicle ◽

Reproductive Biology ◽

Light Microscope ◽

Light Microscope Level ◽

Transmission Electron ◽

Standard Techniques

The hermaphrodite duct of pulmonate snails connects the ovotestis to the fertilization pouch. The duct is typically divided into three zones; aproximal duct which leaves the ovotestis, the middle duct (seminal vesicle) and the distal ovotestis duct. The seminal vesicle forms the major portion of the duct and is thought to store sperm prior to copulation. In addition the duct may also play a role in sperm maturation and degredation. Although the structure of the seminal vesicle has been described for a number of snails at the light microscope level there appear to be only two descriptions of the ultrastructure of this tissue. Clearly if the role of the hermaphrodite duct in the reproductive biology of pulmonatesis to be understood, knowledge of its fine structure is required.Hermaphrodite ducts, both containing and lacking sperm, of species of the terrestrial pulmonate genera Sphincterochila, Levantina, and Helix and the marine pulmonate genus Siphonaria were prepared for transmission electron microscopy by standard techniques.

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