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Pisces, Gymnotiformes, Hypopomidae, Brachyhypopomus Draco (Giora, Malabarba and Istributio

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Pisces, Gymnotiformes, Hypopomidae, Brachyhypopomus Draco (Giora, Malabarba and Istributio View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Directory of Open Access Journals ISSN 1809-127X (online edition) © 2010 Check List and Authors Chec List Open Access | Freely available at www.checklist.org.br Journal of species lists and distribution N Pisces, Gymnotiformes, Hypopomidae, Brachyhypopomus draco (Giora, Malabarba and ISTRIBUTIO D Crampton, 2008): New species record at Lagoa do Peixe National Park, state of Rio Grande do Sul, Brazil RAPHIC G EO G * N Marlucy Coelho Claudino , Fabiano Corrêa, Rodrigo Ferreira Bastos and Alexandre Miranda Garcia O OTES N Brazil. * CorrepondingUniversidade Federal author. deE-mail: Rio Grande, [email protected] Instituto de Oceanografia, Laboratório de Ictiologia, Campus Carreiros. Caixa Postal 474. Rio Grande, RS, Abstract: The present paper describes a new occurrence of the species Brachyhypopomus draco in a wetland area of the Lagoa do Peixe National Park, state of Rio Grande do Sul, Brazil. 6 km east from the city of Mostardas in the Lagoa do families of the Order Gymnotiformes Reis et al. (2003), all Peixe National Park (LPNP) (Figure 2). Our current of whichThe Familyproduce Hypopomidae weak electric impulsesis one offor fivethe purposesnominal records extend 81 Km southeastern the previous known of communication and electrolocation (Sullivan and Hopkins 2009). This family is comprised of approximately record in a national park located along the RS coastline 19 species (Loureiro and Silva 2006; Sullivan and Hopkins (Figuredistribution 2). Individualsof the species of B. and draco also were represent collected its withfirst 2009). As proposed by Albert and Crampton (2003), the a small seine net (1x1m of opening and with size mesh morphologic characters: teeth absent from both jaws, snout’sspecies oflength Hypopomid from moderate family are to identified short, small by theeyes, following a nasal of 5the mm) Rio altogether Grande Federalwith several University, other speciesFURG (SISBIO’sduring a capsule near the eye, anterior nares located outside gape, research field trip conducted by the Ichthyology Laboratory trapezoidal, hyomandibula oriented oblique to long axis of thelicense Ichthyology for field Laboratorycollection number based primarily14443-1). on Specimens Giora et infraorbital bones ossified as slender tubes, operculum al.were (2008). preserved Specimens in 10 %examined formalin wereand laterdeposited identified at the at Brachyhypopomus Ichthyology Laboratory in the same university (catalogue dracohead, anal-finGiora, Malabarba origin ventral and Crampton,or posterior 2008, to pectoral is a electric fin- number FURG2186). base and no caudal fin or dorsal organ. recently described by Giora et al. (2008) (Figure 1). Thesefish belonging authors tocharacterized the Hypopomidae the species family by that the haspresence been of urogenital papilla in females and males, although pigmented rays and perpendicular insertion; pectoral- less developed in juveniles; pectoral fins rounded with fin rays i-ii + 13-15 (15-17 total pectoral-fin rays, n = 47, Figure 1. Picture of female Brachyhypopomus draco collected in a median = 16). Anal fin relatively long with vii-xii + 148-186 wetland area of the Lagoa do Peixe National Park, Rio Grande do Sul state, rays (155-198 total anal-fin rays, n = 41, mean = 181.3) Brazil (Picture by Fabiano Corrêa). which are pigmented. Anal-fin origin located posterior isto widelyposterior distributed edge of pectoral in the Rio fin. Grande Precaudal do Sulvertebrae (RS) state, 21- occurring23 (20-22 in anterior, its central, 1-2 southern transitional; and coastal n= 6). regions This species and it Recently, an extensive fish inventory conducted by is also found in Uruguay, Argentina and Paraguay (Giora et toLoebmann occur in andseveral Vieira freshwater (2005) didand notestuarine found sitesthis specieof the al. 2008). Brachyhypopomus draco inhabits lagoons, rives of electric fish among the 73 fish species they reported occurrence of B. draco in the LPNP, which is considered LPNP. The present work reports for the first time the edges,On slowFebruary moving 20 creeksth, 2009, and we flood collected areas with three abundant female a national park by Brazilian authorities in 1986. The specimensfloating vegetation. of B. draco (average total length, TL, of 61 ± as a “Biosphere Reserve” by UNESCO and was declared 19mm and average weight of 0.68 ± 0.38 g) in a wetland inside the LPNP highlights the urgent need to reinforce conservationoccurrence of actions this recently aiming discovered to protect electricits aquatic fish habitats, species (31°6’5.10”Check List | VolumeS, 50°51’16.71” 6 | Issue 3 | 2010 W) located approximately 358 Claudino et al. | Pisces, Gymnotiformes, Hypopomidae, Brachyhypopomus draco (Giora, Malabarba and Crampton, 2008) Figure 2. Southern Brazil (A) and the Lagoa do Peixe National Park (B) showing the location of wetland area where the specimens of Brachyhypopomus draco were captured. Blue dots denote the previous known geographic distribution of B. draco. The red dot denotes the current record of B. draco inside the borders of the Lagoa do Peixe National Park. Loureiro M. and A. Silva. 2009. A New Species of Brachyhypopomus Ongoing anthropogenic impacts related to private land use (Gymnotiformes, Hypopomidae) from Northeast Uruguay. Copeia withinincluding the park,marginal such areasas cattle that grazing are andseasonal farming, flooded. could Reis, R.E., S.O. Kullander, and C.J. Ferraris, Jr. (Eds.). 2003. Checklist 4:of pose serious threats to his habitats and, consequently, the665-673. freshwater fishes of South and Central America. EDIPUCRS, Porto Sullivan, J.P. and C.D. Hopkins. 2009. Brachyhypopomus bullock, new LPNP. Alegre, Brasil. 729 p. to the future maintenance of this new fish species in the northern South America. Proceedings of the Academy of Natural Sciencesspecies ofof Philadelphiaelectric kinfefish (Gymnotiformes: Hypopomidae), from Literature Cited , 158: 183-192. Albert,2003. J.S. Check and ListW. Crampton.of Freshwater 2003. Fishes Family of the SouthHypopomidae and Central (Bluntnose America. Knifefishes) In: Reis, R. E., S.O. Kullander and C.J. Ferraris Jr. (Eds.). 2008. Brachyhypopomus dracoPorto Alegre: Edipucrs. 729 p. Giora,from J., L.R.southern Malabarba South and America W.G.R. Crampton. (Gymnotiformes: Hypopomidae). Neotropical, a new Ichthyology sexually dimorphic species of Neotropical electric fish : April 2010 : April 2010 do Parque Nacional da 6:Lagoa 159-168. do Peixe, Rio Grande do Sul, Brasil e Received : May 2010 Loebmann,comentários D. and sobre J.P. Vieira. a fauna 2005. acompanhante Composição de e abundânciacrustáceos decápodos. dos peixes Revised : August 2010 Atlântica Accepted : Javier A. Maldonado O. Published online 27(2): 131-137. Editorial responsibility Check List | Volume 6 | Issue 3 | 2010 359.
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