in this study gill-net selectivity for alburnus chalcoides inhabiting the almus dam lake was estimated. experimental gill-net fishing was conducted using gill-net with 15 mm and 20 mm mesh-size, during october 2002 and september 2003. a total of 254 and 198 specimens of a. chalcoides were caught by gill-net with 15 mm and 198 with the 20 mm mesh-size, respectively. the total length of the fish ...

The seawater fish Oligoplites palometa (Cuvier,1833) is found in the American continent, from Guatemala to the coastline of São Paulo, Brazil. Below this area, it does not occur frequently. (MENEZES & FIGUEIREDO,1980). Scientific literature on its biology is scarce. However, studies have shown that this species presents lepidophagous habits. Lepidophagy is characteristic to some fishes that mus...

In a market undergoing constant evolution, the production of chicken meat that consumers would perceive as "natural" and "animal friendly" is crucial. The use of probiotics in rurally reared chickens could represent a major opportunity to achieve mutual benefit for both the industry and consumers. A total of 264 male Kabir chicks were randomly distributed to one of 2 dietary treatments: the L g...

control of poultry feed microbial contamination could reduce carcass contamination at processing plants and resultin improvement of public health. in this study the effects of commercial blend of organic acids (salkil® and formycine®), formalin 37% and formaldehyde gas on morphology of intestinal mucosa and gut microflora in broilers were investigated. three hundreds 1-d-old chicks (ross 308) w...

Surveys carried out along the coast of South Africa revealed the presence of a secondary symbiont of the genus Ellobiophrya Chatton et Lwoff, 1923 found attached to the narrow basal part adoral to the scopula of Mantoscyphidia spadiceae Botes, Basson et Van As, 2001 and M. midae Botes, Basson et Van As, 2001 occurring on the gills of Haliotis spadicea Donovan, 1808 and H. midae Linnaeus, 1758, ...

A fundamental question in biology is how an organism's morphology and physiology are shaped by its environment. Here, we evaluate the effects of a hypersaline environment on the morphology and physiology of a population of livebearing fish in the genus Limia (Poeciliidae). We sampled from two populations of Limia perugiae (one freshwater and one hypersaline) in the southwest Dominican Republic....