Throughout the 1980s, reproductive success of the top-predator cod declined and stock sizes of the main prey species herring and especially sprat, important planktivorous predators in the system, increased substantially. Although the hydrographic conditions conducive for survival of early life stages improved during the 1990s, recruitment success of cod remained far below average. As clupeids h...

The diet of Saguinus midas is characterised by analysis of stomach contents samples on an annual and seasonal basis. The diet comprises significant proportions of both fruit and insects all year round, although fruit use shows important seasonal variations. The tamarins reduce their use of fruit resources during the peak fruiting season and instead exploit increased opportunities for insectivor...

First of all, ‘GOR’ should be distinguished from ‘GOR disease’ or ‘pathological GOR’. ‘GOR’ usually refers to an episode of reflux of the gastric contents into the oesophagus. This is a normal phenomenon at all ages. Classifying it as pathological GOR or GOR disease is dependent on the severity as defined by various objective criteria. I infer from the article that the authors implicitly refer ...

There are many little books of this sort, but we think few, if any, will be found superior to the one by Dr. Hewat, now in its fifth edition. It is small, handy and cheap as well as full of information and account. Of its 200 pages, 125 are devoted to the urine, and in fact this portion of the book is practically a revision of the fourth edition of Husbands' well-known book on the urine. The ot...

In order to verify the carbon source and trophic position of the main species of fishes, of the Paraná River floodplain, we analysed the proportion of stable carbon (delta 13C) and nitrogen (delta 15N) isotopes in muscle of fishes sampled in the rainy season. We analyzed adult individuals of Loricariichthys platymetopon, Schizodon borellii, Leporinus lacustris, Auchenipterus osteomystax, Iherin...

The American workers, Brown et al. (1923), studying the problem from a clinical point of view, and Haden and Orr (1923a), Whipple, Cook, and Stearns (1917), studying it experimentally, have confirmed the findings of Porges (loc. cit.). A study of these papers shows that the hypochloremic condition may appear in the following five groups of instances :? 1. Hypochlorsemia appearing in conditions ...

Knowledge of the diet of a species is crucial for understanding it’s behavior and ecology, and also has relevance to assessing the impact of potential changes in behavior or spatial use that may be associated with anthropogenic activities. Assessing diet for many species of cetaceans is difficult, given that most foraging occurs far below the surface and that stomach contents of stranded animal...

Specimens of the characid Brycinus nurse (N = 980) were collected in Asa reservoir, Nigeria, from November 1991 to October 1993. The diet was analyzed from stomach contents using the frequency of occurrence, numerical and gravimetric methods. Fish sex affected occurrence, number and weight of food items. The relative importance index (RI) indicates that diet varied seasonally. There was also a ...

Spatio-temporal changes in the diet, niche breadth and niche overlap of two species of Characidium from three different sites along a Neotropical coastal stream were studied during a dry and rainy season. Seasonal changes were restricted to the occurrence of plant items in the stomach contents. The relative importance of food items in the diet of both species varied across sites, but Diptera, E...

introduction: mental stress is one of the most important causes of the gastric ulcer. on the other hand, flavonoids such as quercetin show protective effects. the aim of this study was to investigate possible protective effect of quercetin on water restraint stress-induced ulcer in rats. methods: adult male wistar rats were divided into seven groups each containing eight animals. the first grou...