Galactan biosynthesis in snails: a comparative study of β-(1 → 6) galactosyltransferases from Helix pomatia and Biomphalaria glabrata

2000 ◽  
Vol 170 (8) ◽  
pp. 601-613 ◽  
Author(s):  
H. Bretting ◽  
M. Messer ◽  
L. Bornaghi ◽  
L. Kröger ◽  
P. Mischnick ◽  
...  
Keyword(s):  
Comparative Study ◽  
Helix Pomatia ◽  
Biomphalaria Glabrata

Comparative study on the effect of cyclic nucleotides related to the function of Biomphalaria glabrata hemocytes and human granulocytes

Acta Tropica ◽  
1999 ◽  
Vol 72 (3) ◽  
pp. 275-280 ◽  
Author(s):  
F.S.M. Bezerra ◽  
P.M.Z. Coelho ◽  
M.M. Chaves ◽  
R.L. Martins ◽  
J.A. Nogueira-Machado
Keyword(s):  
Comparative Study ◽  
Cyclic Nucleotides ◽  
Biomphalaria Glabrata ◽  
Human Granulocytes

scholarly journals Comparative study of the fecundity and fertility of Biomphalaria glabrata (Say, 1818) and Biomphalaria straminea (Dunker, 1848) in a laboratory through self-fertilization and cross-fertilization

2004 ◽  
Vol 46 (3) ◽  
pp. 157-163 ◽  
Author(s):  
Marta Julia F.S. Costa ◽  
Carlos Eduardo Grault ◽  
Ulisses E.C. Confalonieri
Keyword(s):  
Comparative Study ◽  
Egg Production ◽  
Biomphalaria Glabrata ◽  
Egg Mass ◽  
Hatching Rate ◽  
Biomphalaria Straminea ◽  
Breeding Grounds ◽  
Self Fertilization ◽  
Natural Breeding ◽  
Cross Fertilization

The aim of this study was to compare the fecundity and fertility of B. glabrata and B. straminea by cross- and self-fertilization. To attain this objective, laboratory-raised strains of B. glabrata and B. straminea were used. The former originated from natural breeding grounds in the municipality Paulista, state of Pernambuco, Brazil. The latter originated from irrigation ditches in the municipality of Petrolândia, in the same state. Snail populations of B. glabrata and B. straminea were maintained for 240 days in laboratory. Their fecundity was evaluated by noting the number of egg-masses, eggs and eggs per mass. Their fertility was evaluated by the number of viable eggs and the hatching rate. B. straminea was markedly more fecund than B. glabrata through cross- and self-fertilization, namely: greater egg-mass; higher egg production and more eggs per mass. Regarding fertility, there seemed to be no preferential period for occlusion to occur or a trend in the rhythm of producing viable eggs.

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