scholarly journals Reproductive Biology of Palaemon longirostris (Decapoda: Palaemonidae) from Gironde Estuary (France), with a Comparison with Other European Populations

2010 ◽  
Vol 30 (2) ◽  
pp. 175-185 ◽  
Author(s):  
Mélanie Béguer ◽  
Philippe Boët ◽  
Michel Girardin ◽  
Julien Bergé
Keyword(s):  
Reproductive Biology ◽  
Gironde Estuary ◽  
Palaemon Longirostris ◽  
European Populations

Long-Term Changes in Population Dynamics of the Shrimp Palaemon longirostris in the Gironde Estuary

2012 ◽  
Vol 35 (4) ◽  
pp. 1082-1099 ◽  
Author(s):  
Mélanie Béguer ◽  
Julien Bergé ◽  
Caroline Gardia-Parège ◽  
Laurent Beaulaton ◽  
Gérard Castelnaud ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Gironde Estuary ◽  
Long Term Changes ◽  
Palaemon Longirostris

Seasonal variations of contamination and exoskeletal malformations in the white shrimps Palaemon longirostris in the Gironde estuary, France

2018 ◽  
Vol 25 (23) ◽  
pp. 22689-22701
Author(s):  
Bérenger Levesque ◽  
Jérôme Cachot ◽  
Philippe Boët ◽  
Mario Lepage ◽  
Nicolas Mazella ◽  
...  
Keyword(s):  
Seasonal Variations ◽  
Gironde Estuary ◽  
Palaemon Longirostris

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.

Prevalence of Factor V Leiden Mutation in Non-European Populations

1997 ◽  
Vol 77 (02) ◽  
pp. 329-331 ◽  
Author(s):  
Guglielmina Pepe ◽  
Olga Rickards ◽  
Olga Camacho Vanegas ◽  
Tamara Brunelli ◽  
Anna Maria Gori ◽  
...  
Keyword(s):  
Factor V Leiden ◽  
Indirect Evidence ◽  
Factor V ◽  
Factor V Leiden Mutation ◽  
The World ◽  
Fv Leiden ◽  
Sub Saharan ◽  
Low Prevalence ◽  
European Populations ◽  
Apparently Healthy

SummaryA difference in the prevalence of venous thromboembolism (TE) in major human groups has been described and an uneven distribution of FV Leiden mutation over the world has recently been reported.We investigated FV Leiden mutation in 584 apparently healthy sub#jects mostly from populations different from those previously investi#gated: 170 Europeans (Spanish, Italians), 101 sub-saharan Africans (Fon, Bariba, Berba, Dendi), 115 Asians (Indonesians, Chinese, Tharus), 57 Amerindians (Cayapa), 84 Afroamericans (Rio Cayapa, Viche), and 57 Ethiopians (Amhara, Oromo).The mutation was detected in only 1/115 Asian (Tharu) and in 5/170 Europeans (4 Italians, 1 Spanish).These data confirm that in non-Europeans the prevalence of FV mutation is at least 7 times lower than in Europeans and provide indirect evidence of a low prevalence not only of the FV Leiden gene but also of other genes leading to more severe thrombophilia. Finally, findings from the literature together with those pertaining to this study clearly show a marked heterogeneity among Europeans.

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
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