On a new genus and four new species of the subfamily Cyprettinae (Crustacea, Ostracoda) from Brazilian floodplains.

We describe the new genus Triangocypretta gen. nov. and four new species from Brazilian floodplains.

An annotated checklist of recent non-marine Ostracoda (Crustacea) from Argentina, South America.

According to an updated list of extant non-marine ostracods, there are 2,330 subjective species in 270 genera in the world, of which 333 species are known from the Neotropical region. However, the knowledge about the ostracod fauna in Argentina is scarce, fragmented and incomplete. Thus, the aim of this study was to present the first checklist of the recent non-marine ostracods from Argentina, including geographical distributions and ecological characteristics of the species.

On a new tribe, genus and species of Cypricercinae McKenzie, 1971 (Crustacea, Ostracoda, Cyprididae) from New Caledonia (Pacific Ocean).

The New Caledonian Archipelago is a hot spot for biodiversity and endemism. Here, we describe Lithocypris peyia gen. et spec.

An updated checklist of recent non-marine Ostracoda (Crustacea) from Venezuela.

Information on the known species diversity of the non-marine ostracods in Venezuela is compiled from the available literature. The review resulted in 34 species and two varieties, belonging to the superfamilies Cypridoidea and Cytheroidea. Of these, the presence of one species should be confirmed for the country.

On , a new genus and species of Psychrodromini Martens, 2001 (Crustacea, Ostracoda, Herpetocypridinae) from New Caledonia (Pacific Ocean).

The New Caledonian Archipelago is a hot spot for biodiversity and endemism. Whereas popular groups such as birds and plants are well-studied, invertebrate groups such as ostracods remain ill-known. Here, is described from a single locality on 'Grande Terre', the main island of the archipelago.

Seven new species and two new genera of Physocypria sensu latu (Crustacea, Ostracoda) from Brazilian floodplains.

We describe seven new species in two new genera of the Physocypria sensu latu clade (Cyclocypridinae) from three of the main Brazilian floodplains. Brasilocypria pea gen. et spec.

Redescription of the type species of the genus Cypretta (Ostracoda, Crustacea), with notes on the taxonomy of the genus.

With 53 formally described species, the genus Cypretta is one of the most common freshwater ostracod genera in the world. It has a mainly circumtropical distribution. The type species, Cypretta tenuicauda (Vávra, 1895), was described from Zanzibar (Africa) in a superficial way.

On a New Species of Klie, 1932 (Crustacea, Ostracoda) from the Neotropical Region, with a Discussion on the Position of the Genus.

sp. nov. (named after the carapace spots resembling the word "Love") is here described from all-female populations from the four major floodplains in Brazil.

Ecotoxicological effects of conventional herbicides and a natural herbicide on freshwater fish ().

The contamination of aquatic environments has increased over time, affecting environmental integrity and human health. Herbicides represent a source of this contamination, and among the most commercialized are the triazines and glyphosate. In contrast, there are natural herbicides, which are less harmful to the environment.

Feeding behaviour after injection of α-adrenergic receptor agonists into the median raphe nucleus of food-deprived rats.

This study investigated the participation of median raphe nucleus (MnR) α1-adrenergic receptors in the control of feeding behaviour. The α1-adrenergic agonist phenylephrine (PHE) and α2-adrenergic agonist clonidine (CLON) (at equimolar doses of 0, 6 and 20 nmol) were injected into the MnR of: a) rats submitted to overnight fasting (18 h); or b) rats maintained with 15 g of lab chow/day for 7 days. Immediately after the drug injections, the animals were placed in the feeding chamber and feeding and non-ingestive behaviours such as grooming, rearing, resting, sniffing and locomotion were recorded for 30 min.

Alpha1 receptor antagonist in the median raphe nucleus evoked hyperphagia in free-feeding rats.

Serotonergic neurons in the median raphe nucleus (MnR) are stimulated by α(1)-adrenergic agonists and inhibited by α(2)-agonists. This study investigated the effect of the blockade of the MnR α(1)-adrenergic receptors of free feeding rats as an attempt to elucidate the functional role of these receptors in the control of feeding behavior. In addition, an α(2)-receptor antagonist was also administered in the MnR in order to strengthen the previous suggestion that α(2)-adrenergic receptors participate in the control of feeding behavior, probably decreasing the facilitatory influence on MnR serotonergic neurons.

Phenylephrine into the median raphe nucleus evokes an anxiolytic-like effect in free-feeding rats but does not alter food intake in free feeding rats.

This study investigated the role of MnR α₁-adrenergic receptors in the control of anxiety-like and feeding behaviors and attempted to reveal a possible functional association between both behaviors. The α₁-adrenergic agonist phenylephrine (PHE) (at doses of 0.2, 2, 6, 20 nmol) or saline was injected into the MnR or into the pontine nucleus (Pn) of free-feeding rats.

Changes in food intake and anxiety-like behaviors after clonidine injected into the median raphe nucleus.

Serotonergic neurons in the median raphe nucleus (MnR) are stimulated by alpha(1)-adrenergic agonists and inhibited by alpha(2) agonists. This study investigated the participation of MnR alpha(2)-adrenergic receptors in the control of anxiety-like behavior and feeding as an attempt to establish a functional association between these behaviors. The alpha(2)-adrenergic agonist clonidine (CLON) was injected into the MnR (0, 0.