2013
DOI: 10.15560/9.3.655
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First record of Gymnotus henni (Albert, Crampton and Maldonado, 2003) in Panama: phylogenetic position and electric signal characterization

Abstract: Abstract:We present the first record of the weakly electric fish Gymnotus henni in Panama, which also represents the first record of Gymnotus in the Pacific slope of the country. One specimen was collected in a tributary of the Chucunaque River in the Tuira basin. The species showed a monophasic electric organ discharge. Molecular analyses indicated that G. henni from Panama and Colombia are closely related and represent an independent and basal lineage to the Central American G. cylindricus and South American… Show more

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Cited by 9 publications
(5 citation statements)
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References 14 publications
(30 reference statements)
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“…15 Ma (95% HPD: 7.18–24.28) (Lovejoy et al ., ). It is currently represented by several lineages – or species – from Bocas up to Mexico, and a probably more recent colonization restricted to the Tuira drainage (Alda et al ., ), leaving a distribution gap in the central region of the Isthmus of Panama. Therefore, integrating seawater regression and transgression cycles into the new geological model of Isthmus uplift (Farris et al ., ; Montes et al ., ,b) could help us to understand how this corridor contributed to primary freshwater fish dispersal.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…15 Ma (95% HPD: 7.18–24.28) (Lovejoy et al ., ). It is currently represented by several lineages – or species – from Bocas up to Mexico, and a probably more recent colonization restricted to the Tuira drainage (Alda et al ., ), leaving a distribution gap in the central region of the Isthmus of Panama. Therefore, integrating seawater regression and transgression cycles into the new geological model of Isthmus uplift (Farris et al ., ; Montes et al ., ,b) could help us to understand how this corridor contributed to primary freshwater fish dispersal.…”
Section: Discussionmentioning
confidence: 99%
“…In Panama, all genera occur in the eastern drainages of Tuira and Bayano – the biogeographical province of Tuira. Some, such as Eigenmannia and Apteronotus , are restricted to this region (Meek & Hildebrand, ; Reis et al ., ), whereas others have a wider range, such as Sternopygus , which is distributed up to the central Panama drainage of Santa María (Meek & Hildebrand, ), or Gymnotus , which holds two species: G. henni , found only in the Tuira basin (Alda et al ., ), and G. panamensis , found in the Cricamola river on the western Atlantic coast (Albert & Crampton, ). Brachyhypopomus occidentalis (Regan, 1914) is the only gymnotiform that is widely distributed in Panama in nearly all Atlantic‐ and Pacific‐slope drainages in all five biogeographical provinces (Eigenmann & Ward, ; Ellis, ), thus constituting an excellent study system in which to infer the patterns and processes of colonization across LCA.…”
Section: Introductionmentioning
confidence: 99%
“…Species identification based on EODf was possible for our data, because only three species of wave-type fish are known for Panama (Alda et al, 2013). The high densities of sympatric species sharing the same frequency band reported from the Amazon basin (e.g.…”
Section: Species-specific Eod Frequenciesmentioning
confidence: 99%
“…Monophasic pulsed EODs are rare within the gymnotiform and mormyrid lineages, likely because their low-frequency bias attracts predators. Where monophasic species do occur, monophasy appears to be derived rather than plesiomorphic (Alves-Gomes and Hopkins, 1997;Arnegard et al, 2010;Lovejoy et al, 2010;De Santana and Crampton, 2011;Alda et al, 2013;Crampton et al, 2013Crampton et al, , 2016. Evolutionary reemergence of monophasy in weakly electric fish is surprising, given the conspicuousness of monophasic signals to electroreceptive predators.…”
Section: Eod Properties and Detectability By Predatorsmentioning
confidence: 99%