Results 181 to 190 of about 519,530 (231)

The influence of environmental bacteria in freshwater stingray wound-healing

Toxicon, 2011
Invasion by bacteria can influence the course of healing of wounds acquired in aquatic environment. In this study, the bacteria present in Potamotrygon motoro stingray mucus and in the Alto Paraná river water were identified, and their ability to induce tissue injury and resist antibiotics was determined. Biochemical identification analysis showed that
Marcia R Franzolin
exaly   +3 more sources

Some of the next articles are maybe not open access.

Related searches:

CESTODES OF CESTODES OF PERUVIAN FRESHWATER STINGRAYS

Journal of Parasitology, 2003
Adult tetraphyllidean tapeworms (Platyhelminthes: Eucestoda) from the spiral intestines of 3 species of potamotrygonid stingrays (Paratrygon aiereba, Potamotrygon castexi, and Portamotrygon motoro) in the Madre de Dios river in Peru were found to host numerous cysts embedded in their parenchymal tissues.
F B, Reyda, P D, Olson
openaire   +2 more sources

Visual Pigment of the Freshwater Stingray, Paratrygon motoro

Nature, 1973
IN general the absorbance spectra of the visual pigments of deep-water and pelagic marine animals are blueshifted compared to those of coastal and estuarine animals, and the pigments of the latter are blueshifted compared with those of freshwater animals.
W R, Muntz, E, Church, H J, Dartnall
openaire   +2 more sources

Tetanus after envenomations caused by freshwater stingrays

Toxicon, 2015
Injuries caused by freshwater stingray are common in several regions of South America, although they are underreported. The riverside inhabitants are the main victims in the Amazonian and Midwest regions of South America. The fishermen are injured mainly in the new focus of colonization of the rivers by freshwater stingrays.
Pasesa P Q, Torrez, Mariana M, Quiroga, Renato, Said, Paulo A M, Abati, Francisco O S, França   +4 more
openaire   +2 more sources

Serial reversal learning in freshwater stingrays (Potamotrygon motoro)

Animal Cognition, 2019
Serial reversal learning is considered a reliable approach for the testing of behavioral flexibility, and animals that inhabit fluctuating habitats and different environments are expected to possess behavioral and cognitive flexibility. The ocellate river stingray (Potamotrygon motoro) is one such species.
Martha M. M. Daniel, Vera Schluessel
openaire   +2 more sources

Ultrastructure of spermiogenesis in a freshwater stingray, Himantura signifer

Ichthyological Research, 2005
Ultrastructural changes of spermatids during spermiogenesis in a freshwater stingray, Himantura signifer, are described. Differentiation of spermatids begins with modification of the nuclear envelope adjacent to the Golgi apparatus, before the attachment of the acrosomal vesicle.
Kannika Chatchavalvanich, Amara Thongpan, Masaaki Nakai   +2 more
exaly   +2 more sources

Morphology, DNA Barcoding and Range Extension of a Poorly Known Freshwater Stingray Fontitrygon garouaensis Stauch & Blanc, 1962 from Nigerian Inland Water.

Integrative and Comparative Biology
Increasingly sophisticated taxonomic tools have enhanced our understanding of species diversity and phylogenetic relationships in elasmobranchs.
S. Oladipo, Amaya Everett, Jean-Dominique Durand, K. Adelakun, Wongibe P. Dieudonne, Asiamah Maame, I. C. Nneji, A. Ayoola, O. T. Atofarati, J. B. Kachi, L. M. Nneji   +10 more
semanticscholar   +1 more source

Functional Morphology of the Gill in Amazonian Freshwater Stingrays (Chondrichthyes: Potamotrygonidae): Implications for Adaptation to Freshwater

Physiological and Biochemical Zoology, 2010
The gill morphologies of six species of potamotrygonid freshwater stingrays from the Amazon basin were investigated using light and electron microscopy. Some unique features were found in the potamotrygonid gill: (1) fingerlike protuberances on the gill filament, (2) an Alcian blue/periodic acid-Schiff-positive histochemical reaction for several cell ...
Wallice Paxiúba, Duncan, Oscar Tadeu Ferreira, da Costa, Marise Margareth, Sakuragui, Marisa Narciso, Fernandes   +3 more
openaire   +2 more sources

A deep dive into the venom apparatus of the freshwater stingray: an integrated investigation of biochemical, morphological, and pathophysiological parameters

Toxin Reviews
The stinger of stingrays, located along the tail’s mid-dorsal line, contains venom and mucus glands. This study aims to analyze the secretions of the stinger and dorsal mucus (DM) in Potamotrygon wallacei and examine their epithelium.
Lucas Castanhola-Dias, J. Lameiras, G. Coelho, Bianca Cestari Zychar, C. Dale, V. R. da Silva Oliveira, D. P. Cury, Karoline dos Prazeres Silva, D. Pimenta, Ruben Dario Morales-Gamba, Monica Viviana Abreu Falla, O. Costa   +11 more
semanticscholar   +1 more source

Design and Experiment on a Biomimetic Robotic Fish Inspired by Freshwater Stingray

Journal of Bionic Engineering, 2015
Freshwater stingrays undulate their flexible disc-like pectoral fins to perform cruising, manoeuvring, and other motions. This undulatory propulsion has a higher propulsive efficiency and more precise manoeuvrability than most other species at low swimming velocity.
Dongbiao Zhao
exaly   +2 more sources