A total of 256 sites in 11 habitats were surveyed for Biomphalaria in Melquiades rural area (State of Minas Gerais) in August and November 1999 and in March 2000. Of the 1,780 Biomphalaria collected, 1,721 (96.7%) were B. glabrata and 59 (3.3%) B. straminea. Snails were found in all habitats except in wells, with the largest mean numbers in tanks, seepage ponds and canals, and the smallest numb...

The present study was aimed at characterising Biomphalaria species using both morphological and molecular (PCR-RFLP) approaches. The specimens were collected in 15 localities in 12 municipalities of the southern region of the state of Rio Grande do Sul, Brazil. The following species were found and identified: Biomphalaria tenagophila guaibensis, Biomphalaria oligoza and Biomphalaria peregrina. ...

This paper reports on a study of 62 collection cultivars Sudangrass evaluated by economic traits for 4 years to create new source material the selection higher nutritional value adapted Cis-Ural steppe. The research revealed some highly productive and early-maturing selecting varieties adaptive local agro-climatic conditions. Early ripening Chishminskaia ranniaia, Yaktash, Demskaia, Smena, Novo...