Forty-three specimens of Leptodactylus podicipinus (Anura: Leptodactylidae) were collected in the south-eastern Pantanal, municipality of Corumbá, State of Mato Grosso do Sul, Brazil in February and July 2007, and examined for endoparasites. Forty (93%) specimens were infected with at least one helminth species. The predominant parasites were nematodes (Aplectana sp., Cosmocerca podicipinus, Os...

The consumption of anurans by subsistence hunters in the Brazilian Amazon is unrecorded. Given this scenario, objective study to present first record White-lipped Frog region Rondônia. data were collected through interviews with two migrant from state Espírito Santo, currently residing municipality Itapuã do Oeste used consume white-lipped frog (possibly Leptodactylus latrans) their origin, and...

In this paper two attacks on a multiple length hash function whose construction is proposed by Knudsen and Preneel. One can violates the security bound claimed in the proposal paper [6] if t = 1 and d > 3.

The reaction of hydroxyurea with the oxyhaemocyanins of Astacus leptodactylus and Helix pomatia yielded methaemocyanins which could be regenerated with hydroxylamine. Hydroxyurea did not react with Astacus methaemocyanin, but quantitatively regenerated Helix methaemocyanin under N2. The reaction of hydroxyurea with Helix haemocyanin at pH 5.7 under air thus led to a steady state, with an oxyhae...

For several hundred years freshwater crayfish (Crustacea-Decapoda-Astacidea) have played an important ecological, cultural and culinary role in Scandinavia. However, many native populations of noble crayfish Astacus astacus have faced major declines during the last century, largely resulting from human assisted expansion of non-indigenous signal crayfish Pacifastacus leniusculus that carry and ...

Rapid range expansion is one of the major attributes of invasion success. During range expansion, dispersing individuals face a novel environment where trade-offs between benefits of reduced conspecific density and pressure from niche competitors may differentially affect life-history traits essential for population growth. In this study, we examined differences in sex ratio, body condition, ph...

•Leptodactylus natalensis has a prolonged calling season, typically from May to September. Individuals occur in and call from the most forested patch of habitat on the campus of the Universidade Federal de Sergipe. Two kinds of calls were recorded and analyzed•advertisement and chirp calls. The function of the chirp call is unknown. The advertisement call has two carrier frequency bands, known ...

Accurate characterization of pure silicon-substituted hydroxyapatite powders 1 synthesized by a new precipitation route 2 David MARCHAT, Maria ZYMELKA, Cristina COELHO, Laurent GREMILLARD, 3 Lucile JOLY-POTTUZ, Florence BABONNEAU, Claude ESNOUF, Jérôme 4 CHEVALIER, Didier BERNACHE-ASSOLLANT 5 1 Ecole Nationale Supérieure des Mines, CIS-EMSE, CNRS:FRE3312, F-42023 158 cours 6 Fauriel Saint-Etien...