The more stirring the better: cichlid fishes associate with foraging potamotrygonid rays
Neotropical IchthyologyOne 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
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Argulus juparanensis (Branchiura) em raias Potamotrygon spp. (P otamotrygonidae) 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. +4 more
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Neotropical IchthyologyCytogenetic 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 +3 more
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Bibliografía de los peces de agua dulce de Argentina y Uruguay : Suplemento 1982 [PDF]
, 1982 Fil: López, Hugo Luis. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Menni, Roberto Carlos. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Ringuelet, Raúl Adolfo. Instituto de Limnología Dr. Raúl A. Ringuelet (ILPLA); Facultad de
López, Hugo Luis +2 more
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Behavioural assessment of Potamotrygon stingrays under different food enrichment strategies
Frontiers in EthologyIntroductionFreshwater stingrays of the genus Potamotrygon are endemic to South America and increasingly maintained in aquaria worldwide, yet welfare studies on these species remain limited.
Cassia Regina Ramos Gonzaga +7 more
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Freshwater Stingray Embryos Store Yolk in Their Intestinal Epithelial Cells [PDF]
, 2016 Intestines of freshwater stingray embryos sampled in South America were examined histologically. During embryonic development, yolk, which is transported through the yolk stalk from the external yolk sac, appeared to be accumulating in the intestinal ...
Teshima, Kazuyuki +5 more
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Checklist of the Freshwater Fishes of Argentina (CLOFFAR) [PDF]
, 2015 The purpose of this paper is to present an updated list of freshwater fishes found in Argentina based on the available literature. Since the last list was published in 2003, most systematical and distributional changes were presented on www.pecescriollos.
Koerber, Stefan, Mirande, Juan Marcos
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, 2018 XXXII Congresso Brasileiro de Zoologia, Foz do Iguaçu, 2018. Tema: Desafios e perspectivas para a Zoologia na América LatinaCaderno de Resumos de Trabalhos da Área temática Parasitologia, do XXXII Congresso Brasileiro de ZoologiaSociedade Brasileira de ...
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El aporte de Mariano Castex al estudio de las Rayas de agua dulce de la Región Neotropical [PDF]
, 2023 Los potamotrygónidos pertenecen a una subfamilia exclusiva de América del Sur, llamadas comúnmente rayas o chuchos de río. Poseen especializaciones morfológicas y fisiológicas únicas: un proceso mediano anterior de la cintura pélvica muy expandido, baja ...
Lucifora, Luis Omar +2 more
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Calidad del agua en el manejo post captura de Potamotrygon motoro "raya motoro" (Pisces: Potamotrygonidae) en el acuario comercial "Amazon Tropicals Aquarium" de la ciudad de Iquitos - Perú [PDF]
, 2016 El estudio se realizó entre los meses de abril y setiembre de 2015, en las instalaciones del acuario comercial “Amazon Tropicals Aquarium E.I.R.L.”, ubicado en el distrito de San Juan Bautista de la Región Loreto; el trabajo experimental tuvo un periodo ...
Flores Pérez, Miguel Angel +1 more
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