Results 181 to 190 of about 116,028 (352)

Branchial localization of acid (A‐type) and base (B‐type) excreting ionocytes in Amazonian stenohaline freshwater Potamotrygon ray

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, C. M. Wood, A. L. Val, J. M. Wilson   +3 more
wiley   +1 more source

Biogeographic variation in the diet of juvenile blacktip sharks across the Galapagos Archipelago. [PDF]

Sci Rep
Ryburn SJ, Wisely E, Espinoza E, Armijos D, Capone HE, Pazmiño DA, Hearn A, Bruno JF.   +7 more
europepmc   +1 more source

Organization of Public Opinion for Effective Measures Against Loan Sharks [PDF]

, 1941
Gisler, George L.
core   +2 more sources

Expression of corticoid‐regulatory genes in the gills of Atlantic salmon (Salmo salar) parr and smolt and during salinity acclimation

Journal of Fish Biology, EarlyView.
Abstract In teleost fishes, cortisol is the major corticoid and has both glucocorticoid and mineralocorticoid actions. However, how fish tissues discriminate between these distinct corticosteroid actions is unclear. In mammals, the major factors responsible for intracellular corticosteroid regulation are glucocorticoid receptors (grs) and the ...
Makoto Kusakabe, Takashi Yada, Graham Young, Amy M. Regish, Stephen D. McCormick   +4 more
wiley   +1 more source

First Confirmed Record of a Bull Shark in Lake Gatun, the Freshwater Body of the Panama Canal. [PDF]

Ecol Evol
Castellanos-Galindo GA, Robertson DR, Bravo V, Saltonstall K, Sanchez P, Morales L, Cahill R, Torchin ME.   +7 more
europepmc   +1 more source

FIGURE 7 in A new chondrichthyan (Sharks and Rays) Fossil Assemblage from the Miocene Cacela Fm. at Albufeira (Algarve, Portugal) with two new species: Palaeoecology and Biogeography

Landau, Bernard. M., Hovestadt, Dirk C., Da Silva, Carlos M.   +2 more
openalex   +1 more source

‘It's not much, but it's honest work’: The status of environmental DNA analyses of fish biodiversity in southern Africa

Journal of Fish Biology, EarlyView.
Abstract Environmental DNA (eDNA) biodiversity surveys have the power to transform the detection of species in natural environments, which is crucial for the conservation and management of freshwater, estuarine and marine environments. Globally, eDNA‐based analyses have increased significantly, with fishes being the most widely studied aquatic ...
Sophie von der Heyden
wiley   +1 more source

Distribution modelling for Neotropical freshwater stingrays Potamotrygon brachyura and Potamotrygon motoro (Myliobatiformes, Potamotrygonidae) in the Uruguay River basin

Journal of Fish Biology, EarlyView.
Abstract This study aimed to identify geographical distribution patterns of the giant short‐tailed river stingray Potamotrygon brachyura and the motoro stingray Potamotrygon motoro in the Uruguay River basin. Data on presence/absence of stingrays were based on fishers' knowledge accessed by interviews through expeditions in Brazil, Argentina and ...
Danilo Araujo Soares Pereira, Roberto E. Reis, Nelson F. Fontoura   +2 more
wiley   +1 more source

Sharks

, 2000
Biblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 planta; 28014 Madrid; Tel.
Powling, Chris, Wyk, Rupert van
openaire   +1 more source

The uranium isotopic composition of modern stromatolites forming in Shark Bay, Western Australia

, 2021
A. Martin, Monika Markowska, Allan R. Chivas, Stefan Weyer   +3 more
openalex   +1 more source