We investigated the morphological characteristics of physiologically characterized neurones in the procerebrum (PC) of the terrestrial slug Limax marginatus. The electrophysiological characteristics of the neurones were determined using the perforated patch recording technique. By comparing the shapes and sizes of somata, we found that the somata of bursting neurones were larger and had more ob...

In the present investigation we studied the feeding habits of the fishes associated with aquatic macrophytes in the Rosana Reservoir, southeastern Brazil. Twenty fish species were collected during four field trips, regularly distributed across the dry and wet seasons. Focal snorkeling observations of the fishes were made over a total of six hours. Nine species were present in abundances of more...

Bustling around their reef homes, Red Sea dascyllus damselfish (Dascyllus marginatus) do quite well out of their co-habiting arrangement with hood coral (Stylophora pistillata). ‘The coral provide the fish with shelter from predators and a place for social interactions and egg laying’, says Nur Garcia-Herrera, from the Alfred-Wegener-Institut, Germany. Yet the agreement isn’t entirely one sided...

The survival and outgrowth of neurons in culture has usually required conditioning factors. We now report that crustacean neurons, taken from the peptidergic neurosecretory system of the eyestalk of crabs (Cardisoma carnifex) and lobsters (Panulirus marginatus), show immediate outgrowth, sustained for a week or more, in defined medium as simple as physiological saline with glucose and glutamine...

al. Poultry drinking water for avian infl uenza surveillance. Emerg Infect Dis. infl uenza virus in aquatic habitats: what do we need to learn? Avian Dis. 8. World Health Organization. Recommendations and laboratory procedures for detection of avian infl uenza A(H5N1) virus in specimens from suspected human cases. To the Editor: Rickettsia raoultii is an obligate intracellular gram-negative bac...

ABSTRACT We revise the taxonomy of species ant genus Cephalotes occurring in Brazil. Sixty-four are recognized, distributed 14 groups. Five described as new: gabicamacho new species, marycorn and monicaulyssea (angustus group); liviaprado (fiebrigi mariadeandrade (pinelii group). The soldier gyne C. adolphi group), male nilpiei group) for first time. marginatus is synonymized under atratus. bru...