Overview

Comprehensive Description

Sternarchorhynchus ZBK sp.

Brazil : Amazonas : INPA uncat. 1, 126, Cachoeira da Ponte, Balbina, M. Jégu , 23 Nov 1985 . INPA 4227, 1, 96, Rio Solimões , Januacá , Lago do Castanha, J. Donath, 17 Mar 1978 . Brazil : Pará : INPA 4829, 1, 246, Rio Tocantins, Tucuruí near of dam, INPA Icthyology Team, Dec 1984 . INPA 6811, 1, 109, Rio Jamamxim, afluent of Rio Tapajós , Ilha de Terra Preta, L. Py-Daniel & J. Zuanon, 20 Oct 1991 . Roraima : INPA 10578, 1, 178, Rio Mucajaí , E. Ferreira & M. Jégu , 18 Feb 1987 . INPA 10590, 1, 200, Rio Mucajaí mouth of igarapé Traira, E. Ferreira & M. Jégu , 21 Feb 1987 .

  • Carlos David de Santana, William G. R. Crampton (2006): Sternarchorhynchus curumim (Gymnotiformes: Apteronotidae), a new species of tube-snouted ghost electric knifefish from the lowland Amazon basin, Brazil. Zootaxa 1166, 57-68: 66-66, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:9F94D386-15AE-424A-88C9-4169AB93DB60
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[[ Sternarchorhynchus Castelnau ZBK ]]

Species of the tube-snouted electric knifefish genus Sternarchorhynchus Castelnau ZBK , are common components of the deepwater benthic fauna of many large rivers throughout the Atlantic drainages of South America (Lopez-Rojas et al., 1984; Lundberg et al., 1987; Marrero, 1987; Marrero et al., 1987; Marrero & Taphorn, 1991; Marrero & Winemiller, 1993; Barletta, 1995; Garcia, 1995; Lasso et al., 1997; Campos-da-Paz, 2000; CoxFernandes, 1999; Cox-Fernandes et al., 2004). Sternarchorhynchus ZBK species generate weak periodic (wave-type) electric organ discharges (EODs) with known rates of 944-1992 Hz (Kramer et al., 1981; Crampton, 1998; Crampton & Albert, 2006). Currently, six valid species of Sternarchorhynchus ZBK are recognized (Mago-Leccia, 1994; Campos-da-Paz, 2000; Albert, 2003), of which four are known from the upper Amazon basin in Brazil: S. mormyrus (Steindachner) , S. roseni Mago-Leccia ZBK , S. oxyrhynchus ( Mueller & Troschel) , and S. cf. curvirostris (Barletta, 1995; Crampton, 1998; Cox-Fernandes et al., 2004; Crampton & Albert, 2006). Sternarchorhynchus roseni ZBK is also known from the Orinoco basin, and S. oxyrhynchus is known from the Orinoco and Essequibo basins (Lopez-Rojas et al., 1984; Marrero & Taphorn, 1991; Mago-Leccia, 1994). Sternarchorhynchus curvirostris (Boulenger) was originally described from Canelos, Ecuador (Mago-Leccia, 1994). Sternarchorhynchus britskii Campos-da-Paz ZBK is known from the Paraná River basin, and S. mesensis Campos-da-Paz ZBK is known from the upper Tocantins River basin (Camposda-Paz, 2000).

Sternarchorhynchus ZBK is unquestionably represented by many other undescribed species (e.g., Campos-da-Paz, 1992; Crampton & Albert, 2006) and is currently the most diverse genus in the Sternarchorhynchinae (Albert, 2001). This contrasts with several apteronotid genera that have low species-level diversity, including the monotypic genera Sternarchorhamphus Eigenmann ZBK , Orthosternarchus Boulenger , Parapteronotus Albert ZBK , and Platyurosternarchus Mago-Leccia ZBK (Mago-Leccia, 1994; Albert & Campos-da-Paz, 1998; Albert, 2001; Albert & Crampton, 2005).

At least one species of Sternarchorhynchus ZBK , S. roseni ZBK , is known to exhibit a sexual dimorphism in which males develop a crown of external teeth on the lower jaw (MagoLeccia, 1994; Py-Daniel & Cox-Fernandes, 2005). Sternarchorhychus mormyrus exhibits variation in cranial morphology, with mature males exhibiting a wider snout than females (pers. obs.). The remaining described species of Stenarchorhynchus exhibit no dimorphism (Mago-Leccia, 1994; Campos-da-Paz, 1992, 2000). Here we describe a new species from deepwater channels of the lowland Amazon basin of Brazil, with information on its electric organ discharges and ecology.

  • Carlos David de Santana, William G. R. Crampton (2006): Sternarchorhynchus curumim (Gymnotiformes: Apteronotidae), a new species of tube-snouted ghost electric knifefish from the lowland Amazon basin, Brazil. Zootaxa 1166, 57-68: 57-58, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:9F94D386-15AE-424A-88C9-4169AB93DB60
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Ecology

Habitat

Depth range based on 1 specimen in 1 taxon.

Environmental ranges
  Depth range (m): 2.25 - 2.25
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Sternarchorhynchus sp. - AP104

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Sternarchorhynchus

Sternarchorhynchus is a genus of ghost knifefishes found in tropical South America. There are currently 32 described species in this genus.

Species

References


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