Results 61 to 70 of about 3,591 (200)

Delayed healthcare and secondary infections following freshwater stingray injuries: risk factors for a poorly understood health issue in the Amazon

Revista da Sociedade Brasileira de Medicina Tropical
INTRODUCTION This study aimed to describe the profile of freshwater stingray injuries in the State of Amazonas, Brazilian Amazon, and to identify the associated risk factors for secondary infections.
Jacqueline de Almeida Gonçalves Sachett, Vanderson Souza Sampaio, Iran Mendonça Silva, Akemi Shibuya, Fábio Francesconi Vale, Fabiano Peixoto Costa, Pedro Pereira de Oliveira Pardal, Marcus Vinícius Guimarães Lacerda, Wuelton Marcelo Monteiro   +8 more
doaj   +1 more source

Proposal of a non-lethal visual census method to estimate freshwater stingray abundance

Universitas Scientiarum, 2016
There is not a current method to estimate South American freshwater stingray’s abundance. Therefore we designed a census method and tested it in the field.
Mónica Andrea Morales-Betancourt, Carlos Andrés Lasso-Alcalá   +1 more
doaj   +1 more source

Anthropogenic disturbance modifies spatial patterns of reef sharks

Journal of Applied Ecology, Volume 63, Issue 4, April 2026.
Species‐specific sensitivities mean that non‐extractive human presence can strongly reshape reef predator distributions even where fishing pressure is limited. Integrating tourism intensity and coastal development into marine spatial planning is therefore essential for reef shark conservation, and combining ecological surveys with open‐source social ...
Twan Stoffers, Jimmy van Rijn, Martin de Graaf, Hendrik V. Winter, Tadzio Y. Bervoets, Mark E. Bond, Chris C. Duinmeijer, Michael Heithaus, Matthew Needle, Georgios Papageorgiou, Jan Jaap Poos, Stijn Schep, Koen Tieskens, Leopold A. J. Nagelkerke   +13 more
wiley   +1 more source

A tackle box guide to: common saltwater fishes of southwest Florida [PDF]

, 1993
There are well over 150 species of fish caught by hook and line in local waters. The 86 species included in this book were selected by the author and editors because they are the most frequently encountered.
Allen, Ralph, Seagle, James, Sheftall, Will, Stevely, John, Sweat, Don   +4 more
core  

Behavioral Evidence of Predator–Predator Commensalism: Cobia Track and Feed on Prey Disturbed by Southern Stingrays

Ethology, Volume 132, Issue 3, Page 225-234, March 2026.
We documented a novel predator–predator commensal foraging interaction between cobia (Rachycentron canadum) and a southern stingray (Hypanus americanus) in a shallow coastal habitat of Biscayne Bay, Florida. Using drone‐based observations, we recorded a 7‐min sequence in which a cobia closely tracked the stingray's movements and fed on prey disturbed ...
Julia Saltzman, John Hlavin, Christine Martin, Emily A. Yeager, Catherine C. Macdonald   +4 more
wiley   +1 more source

Phyloinformatics in the age of Wikipedia [PDF]

, 2010
This talk describes a mapping between the NCBI taxonomy database and Wikipedia. These two databases were chosen because the NCBI taxonomy contains all the taxa for which sequences are publicly available, and for many taxa Wikipedia is the first site ...
Roderic Page
core   +1 more source

A Conceptual Framework and Methods for Studying the Connectivity of Fishes

Fish and Fisheries, Volume 27, Issue 2, Page 342-369, March 2026.
ABSTRACT Connectivity is a multifaceted concept that has important implications for the management and conservation of marine and freshwater fishes. We developed a conceptual framework that encompasses multiple, interrelated categories of connectedness, including landscape (e.g., structural, functional) connectivity and ecological (e.g., trophic ...
Jordanna N. Bergman, Jessica A. Robichaud, Jasper McCutcheon, Michael T. Booth, Brendan Campbell, Grace A. Casselberry, Cienna R. Cooper, Bronwyn M. Gillanders, Lucas P. Griffin, Edward Hale, Luc LaRochelle, Karen J. Murchie, Mary Peacock, Reid G. Swanson, Simon D. Stewart, Ryan. J. Woodland, Daniel P. Zielinski, Steven J. Cooke, Morgan L. Piczak   +18 more
wiley   +1 more source

Morphology and morphometry of blood cells of two species of freshwater stingrays (Chondrichthyes: Potamotrygoninae) from the lower Solimões river, Amazon [PDF]

Anais da Academia Brasileira de Ciências
Cytomorphological evaluation of peripheral blood provides information about the health status of animals, in addition to being indicators of environmental contamination.
MARCIO QUARA DE C. SANTOS, FLÁVIA DAYANE F. FARIAS, PAULO HENRIQUE R. ARIDE, ADRIANO T. OLIVEIRA   +3 more
doaj   +1 more source

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

Journal of Fish Biology, Volume 108, Issue 3, Page 922-931, March 2026.
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

The use of pelvic fins for benthic locomotion during foraging behavior in Potamotrygon motoro (Chondrichthyes: Potamotrygonidae)

Zoologia (Curitiba), 2015
Synchronized bipedal movements of the pelvic fins provide propulsion (punting) during displacement on the substrate in batoids with benthic locomotion. In skates (Rajidae) this mechanism is mainly generated by the crural cartilages.
Akemi Shibuya, Marcelo R. de Carvalho, Jansen Zuanon, Sho Tanaka   +3 more
doaj   +1 more source