Distribution and abundance of fish larvae in the channel area of the Patos Lagoon, Brazil are reported. The Patos Lagoon is a shallow coastal lagoon with a very narrow connection with the Atlantic Ocean. Its southernmost ...

The franciscana dolphin has been considered the most threatened small cetacean in the south-western Atlantic Ocean due to gillnet by-catch. The estimation of the species’ abundance has been recommended as the highest ...

A new mark-recapture abundance estimate and a photographic census were carried out to investigate the possible decline in the abundance of the bottlenose dolphins, Tursiops truncatus (Montagu, 1821), in the Patos Lagoon ...

Surveys and commercial fishing landings data of the short fin squid Illex argentinus were analyzed to address three related issues: the seasonal and spatial pattern of abundance; seasonal and regional variation of growth ...

Neste estudo procurou-se determinar quais fatores controlam a abundância de bactérias livres (BL) e aderidas a partículas (BA) em nove lagos presentes no Campus Carreiros da FURG, na região sul da planície costeira do Rio ...

Fortnightly beam trawl samples, collected daily and nightly, were used to ... and diversity of decapod crustaceans inhabiting widgeon grass (Ruppia marítima. Linnaeus, 1753) and nearby unvegetated habitats in the shallow ...

Acartid copepods are abundant in estuaries, harbours, and semi-enclosed waters. A monitoring programme with the objective of evaluating copepod production, particularly that of Acartia tonsa, the dominant taxon in the Patos ...

Survival and physiological parameters associated with metabolism and osmoregulation were evaluated in juveniles of the Lebranche mullet Mugil liza acclimated to different water salinities (5, 10, 20, 30, and 40‰) for 15 ...

Cassino Beach (lat. 32°13’S, long. 52°15’W, Southern Brazil) is an exposed, intermediate to dissipative sandy beach, where dense accumulations of the diatom Asterionellopsis glacialis occur in the surf zone. The frequency ...

Copepods (Acartia tonsa) were exposed (48 h) to waterborne, diet-borne (non-Cu-equilibrated and Cu-equilibrated food), and waterborne plus diet-borne Cu in either the absence or the presence of food (diatom Thalassiosira ...

Cobia Rachycentron canadum is a fast growing fish with world-wide potential for aquaculture, and has been considered for rearing in recirculating aquaculture systems (RAS). Nitrate is considered the least toxic nitrogenous ...

Microcystins (MCs) are toxins produced by cyanobacteria (blue-green algae), primarily Microcystis aeruginosa, forming water blooms worldwide. When an organism is exposed to environmental perturbations, alterations in normal ...

Fish are potentially submitted to water acidification when reared in recirculating aquaculture systems. This study evaluated the responses of juvenile cobia Rachycentron canadum after acute exposure to acid water. ...

This study evaluated the median lethal concentra-tion values (LC50) and the histopathological effectsof un-ionized ammonia (NH3--N) on juvenile mar-oon clownfishPremnas biaculeatus. After 96 h ofexposure to different ...

Nitrogenous compounds can be toxic to aquatic animals especially when they are reared at high stocking densities. Cobia (Rachycentron canadum) is a fast growing fish currently reared in cages, but with expanding production ...

O cromo não possui essenciabilidade comprovada na nutrição das plantas, porém é requerido pelos microrganismos em alguns processos metabólicos específicos. Nesse sentido, elaborou-se o presente trabalho com o objetivo de ...

Sequential infrared satellitebeen usedbetween November images 1995 and August 1996 have to derive sea sur- face advective velocities in the southwestern Atlantic Ocean using the Maximum Cross-Correlation (MCC) technique. ...

The coastal demersal sciaenid Macrodon atricauda (Günther, 1880), formerly M. ancylodon (Bloch and Schneider, 1801) was sampled for ageing during four periods (1977–1979, 1984–1986, 1997–1998 and (2006–2009) in commercial ...