Results 71 to 80 of about 972 (148)

Біологічні властивості збудників ранової інфекції у Potamotrygon leopoldi

, 2017
Potamotrygon leopoldi is a poorly studied stingray species. In this study two potential causative agents of fish and human infections which belong to Citrobacter freundii and Shewanella algae were isolated and their morphological, cultural and ...
Караванський, Юрій Вікторович, Khaydukova, D. O., Хайдукова, Д. О., Kovtalo, M. S., Karavanskyi, Yurii V., Ковтало, М. С., Zinchenko, Oksana Yu., Зинченко, Оксана Юрьевна, Зінченко, Оксана Юріївна, Караванский, Юрий Викторович   +9 more
core   +1 more source

From historical expedition diaries to whole genome sequencing: A case study of the likely extinct Red Sea torpedo ray

Zoologica Scripta, Volume 53, Issue 1, Page 32-51, January 2024.
Abstract Torpedo rays (Torpedinidae, Torpediniformes) are small to moderately large batoids that produce an electric discharge. They are distributed worldwide in temperate and tropical seas and are, as a result of their bottom‐dwelling behaviour, susceptible to trawl fishing and often end up as victims of bycatch.
Anja Palandačić, Martin Kapun, Carola Greve, Tilman Schell, Sandra Kirchner, Luise Kruckenhauser, Nikolaus Szucsich, Nina Bogutskaya   +7 more
wiley   +1 more source

Activity and habitat use of two species of stingrays (Myliobatiformes: Potamotrygonidae) in the upper Paraná River basin, Southeastern Brazil

Neotropical Ichthyology
The life history of freshwater stingrays (Potamotrygonidae) under natural conditions has been poorly documented. In this study, we investigated theperiod of activity and the habitat use of two species of the genus Potamotrygon in the upper Paraná River ...
Domingos Garrone Neto, Virgínia Sanches Uieda   +1 more
doaj   +1 more source

Morphology of lateral line canals in Neotropical freshwater stingrays (Chondrichthyes: Potamotrygonidae) from Negro River, Brazilian Amazon

Neotropical Ichthyology
The relationship between the distribution of the lateral line canals and their functionality has not been well examined in elasmobranchs, especially among Neotropical freshwater stingrays of the family Potamotrygonidae.
Akemi Shibuya, Jansen Zuanon, Maria Lúcia G. de Araújo, Sho Tanaka   +3 more
doaj   +1 more source

Ergasilus trygonophilus sp. nov. (Copepoda: Ergasilidae) a branchial parasite of freshwater stingrays (Potamotrygonidae) from state of Pará, Brazil

Zoologia (Curitiba), 2010
Ergasilus trygonophilus sp. nov. is described from freshwater stingrays (Potamotrygon spp. and Plesiotrygon iwamae Rosa, Castello & Thorson, 1987) from the state of Pará, Brazil.
Marcus V. Domingues, Taísa M. Marques
doaj   +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

Hematology, biochemical profile and thyroid hormones of four species of freshwater stingrays of the genus Potamotrygon

, 2015
Potamotrygonidae e um grupo de raias endêmicas da América do Sul distribuídas nas principais bacias hidrográficas brasileiras, mas informações sobre suas variáveis hematológicas e bioquímicas são escassas.
Mundim, Antônio Vicente, Moraes, Julieta Rodini Engrácia de, Moraes, Flávio Ruas de, Yunis, Jefferson, Tavares-Dias, Marcos, Claudiano, Gustavo da Silva, Viadanna, Pedro Henrique Oliveira, Brito, Fernando Moraes Machado   +7 more
core   +1 more source

Hematological parameters of freshwater stingrays from the lower river negro, Amazonas, Brazil [PDF]

Brazilian Journal of Biology
Freshwater stingrays of the subfamily Potamotrygoninae represent a unique group of elasmobranchs exclusively adapted to freshwater environments in South America.
R. M. Paixão, A. R. S. Liebl, M. F. S. Gomes, M. W. S. Ribeiro, A. N. A. Santos, J. P. F. Rufino, A. C. N. Alves, A. T. Oliveira   +7 more
doaj   +2 more sources

Argulus juparanensis (Branchiura) em raias Potamotrygon spp. (Potamotrygonidae) na foz do rio Amazonas (Brasil). [PDF]

, 2017
Este estudo descreve a ocorrência de Ar gulus juparanensis Lemos de Castro, 1950 (Argulidae) na superfície corporal de P otamotrygon constellata, Potamotrygon dumerilii, P otamotrygon motoro, Potamotrygon orbignyi, P otamotrygon scobina e P otamotrygon ...
FERREIRA SOBRINHO, A., VIEIRA, I. M., GAMA, C. S., SILVA JÚNIOR, A. C., TAVARES-DIAS, M   +4 more
core  

FIGURE 24 in Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855)

, 2016
FIGURE 24. Morphological details of Potamotrygon leopoldi (MZUSP 35986). A) Lower jaw region showing both angular cartilages; B) Close-up of multiple rows of closely-packed dorsal tail thorns; C) Tail region showing distribution of dorsal tail thorns ...
MARCELO R. DE CARVALHO, De Carvalho, Marcelo R.   +1 more
core   +1 more source