Fish, Gymnotiformes, Apteronotidae, Apteronotus magdalenensis (Miles, 1945): distribution extension of an endangered endemic knifefish, in northern Colombia

Agudelo-Zamora, Henry D.; Pelayo‐Villamil, Patricia; Ochoa, Luz E.; Jiménez‐Segura, Luz F.

doi:10.15560/5.4.879

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“…Until May 2008, it was only known from the type locality in the Torrents of Honda, río Magdalena. However, recent collections performed at the lower stretches of the río Magdalena and río Cauca, captured four additional individuals, two in the main channel of the río Magdalena in the municipality of Puerto Berrio (186 km downriver from the type locality), one in the main channel of the río Sogamoso close to its confluence with the río Magdalena almost 210 km downriver from the type locality (Agudelo-Zamora et al, 2009), and one in the main channel of the lower río Cauca in the municipality of Caucasia (approximately 168 km from the confluence between the río Cauca and río Magdalena). These records extend the species distribution range in the río Magdalena-Cauca basin (Fig.…”

Section: Color In Live Specimens (Seementioning

confidence: 99%

On Apteronotus magdalenensis (Miles, 1945) (Gymnotiformes: Apteronotidae): a poorly known species endemic to the río Magdalena basin, Colombia

2011

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Based on the examination of the two available paratypes and recently collected material, we present new data and information on the electric knifefish Apteronotus magdalenensis, a species endemic to the río Magdalena-Cauca basin in Colombia. Since Miles' description in 1945, this species was not collected until recent field work at the Torrents of Honda and additional localities. We present data on the external morphology, morphometrics, pigmentation and electric organ discharges (EODs), of A. magdalenensis. We also review its distribution, ecology and conservation status.Basados en la revisión de los dos paratipos disponibles y material recientemente colectado, presentamos nuevos datos e informaciones del pez cuchillo eléctrico Apteronotus magdalenensis, una especie endémica de la cuenca del río MagdalenaCauca en Colombia. Desde su descripción en 1945 por Miles, esta especie no fue colectada hasta trabajo de campo llevado a cabo recientemente en los rápidos de Honda y localidades adicionales. Presentamos datos sobre la morfología externa, morformetría, pigmentación y descarga del órgano eléctrico (EOD) de A. magdalenensis. También revisamos su distribución, ecología y estatus de conservación.

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Section: Color In Live Specimens (Seementioning

confidence: 99%