Genetics, ethics and the gametes: - on reproductive biology, multiple pregnancies and ICSI

2000 ◽  
Vol 79 (11) ◽  
pp. 913-920
Author(s):  
Ulrik Kvist
Keyword(s):  
Reproductive Biology ◽  
Multiple Pregnancies

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

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.

Morphology, classification, and reproductive biology ofVigna unguiculata (L.) Walpers (Papilionaceae) in Nigeria

1989 ◽  
Vol 100 (3-4) ◽  
pp. 137-145
Author(s):  
R. E. Ugborogho ◽  
C. O. Agomo
Keyword(s):  
Reproductive Biology

Orgasm, Generation, and the Politics of Reproductive Biology

1986 ◽  
Vol 14 (1) ◽  
pp. 1-41 ◽  
Author(s):  
Thomas Laqueur
Keyword(s):  
Reproductive Biology

The Reproductive Biology of Haddock (Mellanogrammus aeglefinus) at the Rockall Bank

2009 ◽  
Vol 40 ◽  
pp. 59-73 ◽  
Author(s):  
E A Filina ◽  
V N Khlivnoy ◽  
V I Vinnichenko
Keyword(s):  
Reproductive Biology

Reproductive Biology and Sexual Dimorphism of Gymnophthalmus vanzoi (Squamata, Gymnophthalmidae) in a Population South of the Amazon River, Brazil

2020 ◽  
Vol 2020 (15) ◽  
pp. 30
Author(s):  
Maiume Silva-da-Silva ◽  
Danilo Augusto Almeida-Santos ◽  
Síria Ribeiro ◽  
Renato Sousa Recoder ◽  
Alfredo P. Santos
Keyword(s):  
Sexual Dimorphism ◽  
Reproductive Biology ◽  
Amazon River

Notes on the Reproductive Biology of Rare Asian Ratsnake Elaphe persica

2011 ◽  
Vol 4 (2) ◽  
pp. 200-202
Author(s):  
Sergei V. Mamet ◽  
Sergei V. Kudryavtsev
Keyword(s):  
Reproductive Biology

Results of a long-term project involving captive reproduction of Elaphe persica are presented, complete with measurements of the youngs.

Prenatal diagnosis of cord entanglement in monoamniotic multiple pregnancies

2001 ◽  
Vol 1 (4) ◽  
pp. 365-371 ◽  
Author(s):  
C. M. Bilardo ◽  
B. Arabin
Keyword(s):  
Prenatal Diagnosis ◽  
Multiple Pregnancies
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