Results 91 to 100 of about 31,301 (243)
Fish Advisories: Useful Or Difficult to Interpret? [PDF]
, 1996 The authors note that fish and shellfish offer significant exposure to environmental toxins but find that consumer knowledge and other factors may limit efforts to control risk in urban ...
Burger, Joanna, Gochfeld, Michael
core +1 more source
New perspectives on head and neck allometry and ecomorphology in tetrapods
Biological Reviews, EarlyView.ABSTRACT The skull and neck are vital parts of the body, influencing feeding ecology, habitat exploitation and locomotion. Numerous studies have therefore sought to understand how the size of these segments vary with ecology and scale with overall body size.
Alice E. Maher +4 more
wiley +1 more source
Increased tolerance to humans among disturbed wildlife. [PDF]
, 2015 Human disturbance drives the decline of many species, both directly and indirectly. Nonetheless, some species do particularly well around humans. One mechanism that may explain coexistence is the degree to which a species tolerates human disturbance ...
Blumstein, Daniel T +4 more
core +3 more sources
Nitrogen excretion and oxygen consumption under severe hypoxia in siluriform fishes from the Amazon
Journal of Fish Biology, EarlyView.Abstract Siluriform fishes collected from the Rio Negro and Rio Solimões proved to be highly resistant to aquatic hypoxia. In all four species analysed in this study, aquatic oxygen consumption significantly decreased from normoxic levels at water PO2 values near 1 kPa. Air‐breathing activity was observed only in Sturisoma sp. (Rio Negro).
Bernd Pelster +2 more
wiley +1 more source
Neotropical IchthyologyThirty-two species of commercially important fish from three trophic levels and nine trophic categories were sampled at a floodplain lake of the Solimões River (Lago Grande de Manacapuru).
Sandra Beltran-Pedreros +5 more
doaj +1 more source
Levels of digestible protein to surubim (Pseudoplatystoma sp.) reared in net cages
Semina: Ciências Agrárias, 2014 The Pseudoplatystoma sp. is species of carnivorous fish that require special attention in the diet offered. This work had the objective to determine the digestible protein requirement of juvenile the Pseudoplatystoma sp. reared in net cages.
Claucia Aparecida Honorato +6 more
doaj +1 more source
Algal cover in mangroves affects distribution and predation rates by carnivorous fishes
Journal of Experimental Marine Biology and Ecology, 2012 Abstract Distribution and survival of fish are influenced by benthic habitat and complexity. While many studies have investigated the effects of algal cover on fishes in reef habitats, comparatively less is known regarding this relationship in mangrove habitats.
Jaxion-Harm, J, Speight, M
openaire +2 more sources
Journal of Fish Biology, EarlyView.Abstract The branchial epithelium of Potamotrygon—a member of the only strictly freshwater elasmobranch family Potamotrygonidae—was observed via immunohistochemistry, and two distinct forms of ionocytes were identified. The acid (A‐type) and base (B‐type) secreting cells with respective basolateral–apical localizations of Na+/K+‐ATPase–Na+/H+ exchanger
M. W. Rossi +3 more
wiley +1 more source
Journal of Fish Biology, EarlyView.Abstract Circadian processes are key drivers of animal behaviour, influencing patterns of activity, resource partitioning and competition avoidance. Studies evaluating circadian changes on the structure of marine assemblages are lacking, especially for reef fish.
Marcos B. Lucena +3 more
wiley +1 more source
Revista de Biología Tropical, 2013 In India, freshwater aquatic resources are suffering from increasing human population, urbanization and shortage of all kind of natural resources like water.
Vineet Kumar Dubey +3 more
doaj