Results 31 to 40 of about 354 (121)

Hematological parameters of three freshwater stingray species (Chondrichthyes: Potamotrygonidae) in the middle Rio Negro, Amazonas state. [PDF]

, 2016
This paper aimed to study and compare the hematology of newborns, young, subadults, adult males, adult females and pregnant females of Potamotrygon wallacei (cururu stingray), Potamotrygon motoro and Paratrygon aiereba. Newborn cururu stingrays had lower
ARAÚJO, M. L. G. de, ARIDE, P. H. R., LEMOS, J. R. G. de, MARCON, J. L., OLIVEIRA, A. T. de, PANTOJA-LIMA, J., SALES, R. S. de A., SANTOS, M. Q. de C., TAVARES-DIAS, M.   +8 more
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Ecology of endoparasites of the fluvial stingray Potamotrygon falkneri (Chondrichthyes: Potamotrygonidae) from the upper Paraná River floodplain, Brazil

Brazilian Journal of Biology
The present study investigated the ecological relationships between endoparasites and the host Potamotrygon falkneri from the upper Paraná River by using as indicators the host's relative condition factor (Kn), sex and hepatosomatic relation (HSR). Forty-
ACF. Lacerda, RM. Takemoto, GC. Pavanelli   +2 more
doaj   +1 more source

Length‒Weight and Length‒Length Relationships of Freshwater Fish Species Caught by Professional Fishermen in the Itaipu Reservoir, Brazil

Journal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
Length‒weight relationships (LWRs) and length‒length relationships (LLRs) were estimated for 63 and 58 freshwater fish species, respectively, captured in the Itaipu Reservoir, Paraná River Basin, Paraná State, Brazil. Sampling was carried out from March 1987 to July 2024 at 63 professional fishing sites within the reservoir’s area of influence ...
Éder André Gubiani, Luiz Guilherme dos Santos Ribas, Anderson Luís Maciel, Geuza Cantanhêde, Laís Thayse Meier, Pitágoras Augusto Piana, Caroline Henn, Yintao Jia   +7 more
wiley   +1 more source

Revisão taxonômica e morfológica de Potamotrygon signata Garman [PDF]

, 2021
The order Myliobatiformes comprises the rays with a caudal serrated sting and includes the only subfamily completely adapted to the freshwater environment: Potamotrigoninae, endemic to South America and characterized by the reduction of ...
Araújo, Marcus Vinicius Goncalves
core  

Serum chemistry, thyroxine concentration, and blood cell morphology of wild, young Blackchin Guitarfish Glaucostegus cemiculus sampled on the eastern Mediterranean coastline

Journal of Aquatic Animal Health, Volume 36, Issue 3, Page 281-299, September 2024.
Abstract Objective The Blackchin Guitarfish Glaucostegus cemiculus is endemic to the Mediterranean Sea and is critically endangered, but relevant routine laboratory data are unavailable. Our objectives were to determine the packed cell volume (PCV), comprehensive serum chemistry analytes, and serum total thyroxine (sTT4) concentration; compare serum ...
Nevo Schwartz, Danny Morick, Barak Azrieli, Aviad Scheinin, Dan Tchernov, Itamar Aroch   +5 more
wiley   +1 more source

Freshwater stingray injuries in Belém, Pará State, Brazil/ Lesiones por rayas de agua dulce en Belém, Estado de Pará, Brasil/ Lesões por arraias de água doce em Belém, Estado do Pará, Brasil [PDF]

, 2020
Objective: to describe clinical and epidemiological aspects of freshwater stingray injuries in the city of Belém, Pará, brazilian amazon. Method: descriptive, epidemiological and observational study, carried out between 1999 and 2008, using medical ...
Barbaro, Katia Cristina, Borba, Pedro, Brito, Roberto Messias Oliveira, Ferreira, Hugo, Monteiro, Wuelton Marcelo, Pardal, Pedro Pereira de Oliveira, Pires, Wanda Maria, Silva, Elder Oliveira   +7 more
core   +1 more source

Trauma and envenoming caused by stingrays and other fish in a fishing community in Pontal do Paranapanema, state of São Paulo, Brazil: epidemiology, clinical aspects, and therapeutic and preventive measures [PDF]

, 2012
INTRODUCTION: Accidents caused by fish are common in inland fishing communities in Brazil, being work-related injuries in the majority of cases. These populations have no information on the mechanisms of trauma or envenoming.
Barbaro KC, Bruno da Costa Ancheschi, Cardoso JLC, Domingos Garrone Neto, Edson Luiz Fávero Junior, Felipe Augusto Horácio Ribeiro, Gabriel Isaac Pereira de Castro, Garrone Neto D, Garrone Neto D, Garrone Neto D, Guilherme Borghini Pazuelo, Haddad Jr V, Haddad Jr V, Haddad Jr V, Haddad Jr V, Haddad Jr V, Haddad Jr V, Haddad Jr V, Haddad Jr V, Haddad Jr V, Haddad Jr V, Jun Ricardo Fujii, Pedroso CM, Rafael Costa Martins, Rodolfo Brum Vieira, Sazima I, Silva GC, Vidal Haddad Junior   +27 more
core   +3 more sources

Aplicación forense de los genes Cytb y COI para la identificación de rayas de agua dulce: Un caso de incautación en Bogotá, Colombia [PDF]

Freshwater stingrays of the Potamotrygonidae family are highly valued in the international market as ornamental fish, leading to growing demand and economic significance.
Alméciga–Diaz, Paola, Cuellar, Ana, Gelvez, Lisbeth, Gómez, María, Infante–González, John, Oliveros, Jorge, Pinedo–Castro, Myreya   +6 more
core   +2 more sources

Occurrence record of two potamotrigonids species in the Upper Paraná River and some aspects about their biology [PDF]

, 2007
A distribuição geográfica das raias da família Potamotrygonidae é restrita aos principais sistemas fluviais da América do Sul. No Brasil, a ocorrência de potamotrigonídeos é conhecida em toda a Bacia Amazônica, em alguns rios da região Nordeste e na ...
Garrone Neto, Domingos, Haddad Junior, Vidal, Uieda, Virgínia Sanches, Vilela, Maria José Alencar   +3 more
core   +1 more source

Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River

Neotropical Ichthyology
Hunting tactics of potamotrygonid freshwater rays remain unreported under natural conditions. Three main foraging tactics of Potamotrygon falkneri and P. motoro are described here based on underwater observations in the upper Paraná River.
Domingos Garrone-Neto, Ivan Sazima
doaj   +1 more source