14 research outputs found
Hábito alimentar do bagre Sciades herzbergii (Siluriformes, Ariidae) da Ilha dos Caranguejos, Maranhão, Brasil
Sacarose e período de cultivo in vitro na aclimatização ex vitro de ginseng brasileiro (Pfaffia glomerata Spreng. Pedersen)
Reproductive aspects of Macrobrachium amazonicum (Decapoda: Palaemonidae) in the State of Amapá, Amazon River mouth
Age influence on quality of shell and penetration in bacterial laying lightweight eggs
Population biology of Macrobrachium jelskii (Miers, 1877) (Decapoda, Palaemonidae) from an artificial pond in Bahia, Brazil
Analysis of fish assemblages in sectors along a salinity gradient based on species, families and functional groups
Effect of Fe (III) on L-asparagine monohydrate investigated under low- and high-temperature conditions
Ichthyofauna of the inner shelf of Paraná, Brazil: checklist, geographic distribution, economic importance and conservation status
Morphology of gills of the seawater fish Cathorops spixii (Agassiz) (Ariidae) by scanning and transmission electron microscopy
Gills of the seawater fish Cathorops spixii (Agassiz, 1829) were submitted to routine processing for observation in scanning and transmission electron microscopy. The wrinkled surface of the gill filaments showed well-defined cellular ultrastructures. Microridges on cellular surface were projected over all gill structures, including respiratory lamellae. Chloride cells were usually at primary lamellae. Some rodlet cells were found. Mucous secretory cells were uncommon at all parts of the gill arches. The pharyngeal region of the gill arches showed a lot of taste buds but no spines. There were small and strong rakers. Such morphology is indicative of fishes that swallow small food but do not have filtering habits. At the ultrastructural level the gills of C. spixii presented the typical morphological pattern of Teleostei fishes