Some Aspects of Reproductive Biology: Asexual Reproduction and Heterogenity of Seeds

Reproductive Biology of Invertebrates. Volume XI: Progress in Asexual Reproduction. Edited by Roger N Hughes. Chichester (United Kingdom) and New York: John Wiley & Sons. $165.00. xvi + 337 p; ill.; subject and species indexes. ISBN: 0–471–48968–9. 2002.

The Quarterly Review of Biology ◽

10.1086/377985 ◽

2003 ◽

Vol 78 (2) ◽

pp. 239-239

Author(s):

Neil W Blackstone

Keyword(s):

New York ◽

United Kingdom ◽

Reproductive Biology ◽

Asexual Reproduction

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Reproductive Biology of Invertebrates, Volume XI: Progress in Asexual Reproduction

Ethology ◽

10.1046/j.0179-1613.2003.00930.x ◽

2003 ◽

Vol 109 (12) ◽

pp. 1023-1025

Author(s):

Stephen M. Shuster

Keyword(s):

Reproductive Biology ◽

Asexual Reproduction

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studies on reproductive biology or Taihangia rupes2 Investigation and study of sexual and asexual reproduction

Biodiversity Science ◽

10.17520/biods.1995002 ◽

1995 ◽

Vol 03 (1) ◽

pp. 8-14

Author(s):

Lu Wenliang ◽

◽

Shen Shihua ◽

Wang Fuhsiung

Keyword(s):

Reproductive Biology ◽

Asexual Reproduction ◽

Sexual And Asexual Reproduction ◽

Investigation And Study

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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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