Results 121 to 130 of about 873 (190)

Potamotrygon tatianae Silva & Carvalho, 2011, sp. nov.

, 2011
Potamotrygon tatianae, sp. nov. (Figures 1-12, Tables 1-2) Potamotrygon sp: Silva & Carvalho, 2011: 209, 212, 223, 224, 227, 228, figs. 12-13 (redescription of Potamotrygon falkneri). Holotype MZUSP 107673 (adult male, 348 mm DW), Río Madre de Díos, municipal district of Boca Manu, upper Amazon basin, state of Madre de Dios, Peru, 12°40’S, 71°04’06”W ...
Da Silva, João Paulo C. B., De Carvalho, Marcelo R.   +1 more
openaire   +2 more sources

Estudos genéticos em raias do gênero Potamotrygon (Chondrichthyes: Myliobatiformes: Potamotrygonidae) na Bacia do Rio Paraná

, 2013
The stingrays Potamotrygonidae family are important components of Neotropical ichthyofauna, being completely restricted to the main river systems of South America four genera are related in that family: Heliotrygon, Paratrygon, and Plesiotrygon ...
Cruz, Vanessa Paes da
core   +1 more source

Mapping of the venomous stingrays of the Potamotrygon genus in the Tietê River, São Paulo Sstate, Brazil. [PDF]

Rev Soc Bras Med Trop, 2022
Moreira ISR, Haddad Junior V.
europepmc   +1 more source

The more stirring the better: cichlid fishes associate with foraging potamotrygonid rays

Neotropical Ichthyology
One hunting tactic of freshwater rays (Potamotrygonidae), termed "undulate the disc and stir substrate", is here reported to attract cichlids at two sites in the upper Paraná River.
Domingos Garrone-Neto, Ivan Sazima
doaj   +1 more source

Fig. 6 in Karyotype description and evidence of multiple sex chromosome system X X X X /X X Y in Potamotrygon aff. motoro and P. falkneri (Chondrichthyes: Potamotrygonidae) in the upper Paraná River basin, Brazil

, 2011
Fig. 6. Somatic metaphases of Potamotrygon aff. motoro, the population of Porto Rico (a), population of Ilha Solteira (b), identification of constitutive heterochromatin. Metaphases of Potamotrygon falkneri sample from Porto Rico (c) and Ilha Solteira (d)
Oliveira, Claudio, Shimabukuro-Dias, Cristiane Kioko, Cruz, Vanessa Paes da, Foresti, Fausto   +3 more
core   +1 more source

Occurrence of the hemoparasite Cyrilia spp. in the Amazonian stingray Potamotrygon wallacei

Anais da Academia Brasileira de Ciências
Abstract Freshwater stingrays play a crucial ecological role in the Amazon; however, studies on their parasitic fauna still need to be made available. This study aimed to investigate the occurrence of hemoparasites, specifically Cyrilia spp., in specimens of Potamotrygon wallacei from the Lower Rio Negro, Brazil.
ANA CLARA N. ALVES, LARISSA D. FONSECA, RAYANA M. PAIXÃO, ADRIANO T. OLIVEIRA   +3 more
openaire   +4 more sources

Karyotype description and evidence of multiple sex chromosome system X1X1X2X2/X1X2Y in Potamotrygon aff. motoro and P. falkneri (Chondrichthyes: Potamotrygonidae) in the upper Paraná River basin, Brazil

Neotropical Ichthyology
Cytogenetic analysis of Potamotrygon aff. motoro and P. falkneri indicated the occurrence of an X1X1X2X2/X1X2 Y multiple sex chromosome system in both species, with 2n = 66 chromosomes for females and 2n = 65 chromosomes for males.
Vanessa Paes da Cruz, Cristiane Kioko Shimabukuro-Dias, Claudio Oliveira, Fausto Foresti   +3 more
doaj   +1 more source

Effective Pre-Clinical Treatment of Fish Envenoming with Polyclonal Antiserum. [PDF]

Int J Mol Sci, 2023
Lopes Ferreira M, Falcão MAP, Bruni FM, Haddad V, Marques EE, Seibert CS, Lima C.   +6 more
europepmc   +1 more source

Stingray Venom Proteins: Mechanisms of Action Revealed Using a Novel Network Pharmacology Approach. [PDF]

Mar Drugs, 2021
Kirchhoff KN, Billion A, Voolstra CR, Kremb S, Wilke T, Vilcinskas A.   +5 more
europepmc   +1 more source

Potamotrygon rex Carvalho, 2016, sp. nov.

, 2016
Potamotrygon rex, sp. nov. (Figs. 1–13, 15, 16 a, Tables 1–2) Holotype. MZUSP 120371, adult female, 1110 mm TL, 750 mm DL, 690 mm DW, rio Tocantins near the mouth of the right bank tributary rio Manoel Alves (type locality), Tocantins state, Brazil, 11°18'55"S, 048°27'28"W, 10.vii.2003, col. NEAMB team (ex UNT 7139). Paratypes. (19 specimens).
openaire   +1 more source