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First Record of Laimosemion Xiphidius (Huber 1979) (Cyprinodontiformes: Rivulidae) in Brazil

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First Record of Laimosemion Xiphidius (Huber 1979) (Cyprinodontiformes: Rivulidae) in Brazil aqua, International Journal of Ichthyology First record of Laimosemion xiphidius (Huber 1979) (Cyprinodontiformes: Rivulidae) in Brazil Fabio Origuela de Lira1, Dalton Tavares Bressane Nielsen2 and Luciano Medeiros de Araujo3 1) IKB-Instituto Killifish Brasil, Rua Hercilio Faria Alves 244, 95560-000,Torres, RS, Brazil. Email: [email protected] 2) Laboratório de Zoologia, departamento de Biologia, Universidade de Taubaté, Av. Tiradentes 180, 12030-180, Taubaté, SP, Brazil. Email: [email protected] 3) Rua Tibúrcio Custódio 73, 32042-500 Bairro Alvorada, Contagem, MG, Brazil. Email: [email protected] Received: 25 February 2018 – Accepted: 07 May 2018 Keywords name, Guiana, Venezuela, and Colombia. Laimo se - Laimosemion geayi, Amapá state, Oyapock River, French mion was originally erected as a subgenus of Rivu- Guyana, range extension. lus by Huber (1999), including the following species: Rivulus agilae Hoedeman, 1954, R. diba- Abstract phus Myers, 1927, R. breviceps Eigenmann, 1909, The first record for the rivulid killifish Laimosemion xiphidius (Huber) for Brazil is presented. The species was R.cladophorus Huber, 1991, R. corpulentus Tho - recorded in a small tributary of the Oyapock River (Rio merson & Taphorn, 1993, R. frenatus Eigenmann, Oiapoque in Brazil), Amapá state, at the border with 1912, R. geayi Vaillant, 1899, R. gransabanae Las- French Guyana. The potential occuurence of the species in so, Taphorn & Thomerson, 1992, R. lyricauda other sites in Brazil is remarked. Thomerson, Berkenkamp & Taphorn, 1991, R. ni - coi Thomerson & Taphorn, 1992, R. strigatus Re- Zusammenfassung gan, 1912, R. torrenticola Vermeulen & Isbrücker, Präsentiert wird der Erstnachweis des rivuliden Killifis- 2000, and R. xiphidius Huber, 1979. Costa (2011) ches Laimosemion xiphidius (Huber) für Brasilien. Vertreter der Art wurden in einem kleinen Nebenarm des Oyapock raised Laimosemion to the genus category and in- River (Rio Oiapoque auf Brasilianisch), Staat Amapá, an cluded Owiyeye Costa, 2006 as a subgenus of Lai - der Grenze zu Französisch Guyana, gefunden. mo semion. Hingewiesen wird auf die Möglichkeit des Vorkommens Laimosemion xiphidius (Huber, 1979) was de- an anderen Orten Brasiliens. scribed from specimens collected in the Oyapock River basin, French Guyana, upstream of Saint- Sommario Georges, in the back of Maripa falls, a few hundred Viene presentata la prima registrazione del ciprinodon- meters of the Oyapock River (Rio Oiapoque in tide rivulide Laimosemion xiphidius (Huber) per il Brasile. La specie è stata censita in un piccolo affluente del fiume Brazil), near the border with Brazil. The Oiapock Oyapock (Rio Oiapoque in Brasile), nello stato di Amapá, River defines the border between Brazil and French al confine con la Guyana francese. Si osserva la potenziale Guyana. The distribution of known populations of presenza della specie in altri siti del Brasile. the species, including the new record presented here, is mapped on Fig. 1. Additionally, Laimo - INTRODUCTION semion xiphidius is reported for the rivers Iracoubo, The genus Laimosemion Huber includes 31 valid Sinnamary, Kourou, Comté, and Approuague in species, distributed across the Amazon basin, French Guyana (Keith et al. 2000). The species was Orinoco basin, and guyanese river systems in north- reported to Brazil by Huber (1992), but no pre- ern South America, in Brazil, French Guyana, Suri- served specimens or exact locality were provided. 23 aqua vol. 24 no. 1 - 05 June 2018 First record of Laimosemion xiphidius (Huber 1979) (Cyprinodontiformes: Rivulidae) in Brazil Fig. 1. Geographical distribution of some populations of Laimosemion xiphidius. Fig. 2. Laimosemion xiphidius. ZUEC 16797, male, 34.0 mm SL, from Amapá, Oiapoque, igarapé Serrapini (tributary of the Rio Oiapoque). Photo by F. Origuela de Lira. aqua vol. 24 no. 1 - 05 June 2018 24 Fabio Origuela de Lira, Dalton Tavares Bressane Nielsen and Luciano Medeiros de Araujo Fig. 3. The locality of Laimosemion xiphidius in Brazil, the Igarapé Serrapini, at the forest near the border of the state of Amapá, Brazil with French Guiana, Rio Oiapoque basin. Photo by F. Origuela de Lira. Fig. 4. Laimosemion geayi, specimen not preserved, male, 25.3 mm SL, from Amapá, Oiapoque, Rio Oiapoque basin. Photo by F. Origuela de Lira. 25 aqua vol. 24 no. 1 - 05 June 2018 First record of Laimosemion xiphidius (Huber 1979) (Cyprinodontiformes: Rivulidae) in Brazil The first record of Laimosemion xiphidius was (Fig. 4), was collected syntopically, and presented a done in 1925 by Carl Ternetz, in a creek tributary higher abundance, with more than 20 specimens to the Approuague River (Huber 1991). The collected. Despite additional collecting efforts in species was introduced in the european aquarium the area, the species was only recorded at this single hobby in 1978 by the aquarist G. Oeker. Males of site. A search for other populations of the species in Laimosemion xiphidius have a remarkable color pat- the region proved fruitless, other streams and pools tern, with a black longitudinal band at lower third sampled in the area were inhabited solely by L. of the body, extending into caudal fin, margined by geayi. However, given the presence of much suit- light blue pigmentation, an overall reddish body able habitat for the species in the region, we con- color, and a rounded, red caudal fin. sider very likely that Laimosemion xiphidius will Laimosemion xiphidius is considered to be one of eventually be found in another locations in the the most beautiful Rivulidae, and pictures of the Brazilian side of the border. species are often portrayed in book and magazine covers, as for example Vermeulen (2015). In the ACKNOWLEDGEMENTS present note, the first confirmed record for the Thank you to Itamar Alves Martins of the Uni- species in Brazil is presented. versity of Taubaté (UNITAU), Paulo Mário de Araújo (Ecology Brazil), Gledison Souza, Everton MATERIALS AND METHODS Carvalho and Sérgio Martins of the Killifish Brazil Specimens were identified based on Huber Institute (IKB) for technical and logistical support. (1992) and Keith et al. (2000). Specimens were Victória F. C. de Araújo (UERJ) was of fundamen- kept alive, with the exception of two voucher spec- tal assistance in fieldwork. Flávio C. T. Lima imens, that were fixed in formalin 10% and subse- (ZUEC) reviewed the manuscript and offered use- quently stored in 70% alcohol, and were deposited ful suggestions. at ZUEC (Museu de Zoologia da Universidade Estadual de Campinas, Campinas). REFERENCES RESULTS COSTA, W. J. E. M. 2011. Phylogenetic position and taxo- Laimosemion xiphidius (Huber, 1979) (Fig. 2) nomic status of Anablepsoides, Atlantirivulus, Cyn- odonichthys, Laimosemion and Melanorivulus (Cyprin- Material examined: ZUEC 16797, 2, 1 male, odontiformes: Rivulidae). Ichthyological Exploration of 27.5 mm SL, 1 female, 24.2 mm SL: Brazil, Freshwaters 22: 233-249. Amapá, Oiapoque, Igarapé Serrapini (a tributary HUBER, J. H. 1979. A propos de quatre nouvelles collec- of Rio Oiapoque), 3°48’11.34”N 51°51’26.77”W; tions de Rivulus des Guyanes, avec description de Rivulus Fabio Origuela de Lira & Victoria Freitas Correia xiphidius n. sp. et Rivulus amphoreus n.sp. Revue Française de Araújo, 12 November 2017. d’Aquariologie et herpétologie 6: 65-72. Comments: The population of Laimosemion HUBER, J. H. 1992. Review of Rivulus. Ecobiogeography- xiphidius was recorded in a small forest stream Relationships. Cybium Suppl., Société Française d’Ichty- ologie, Paris, 572 pp. (Igarapé Serrapini) (Fig. 3), a tributary of the Rio HUBER, J. H. 1999. Updates to the phylogeny and system- Oiapoque, near the border of the state of Amapá atics of the Neotropical cyprinodont genus Rivulus and (Brazil) with French Guiana (Fig. 1). The Igarapé its allied (Cyprinodontiformes: Rivulinae). Cybium 23: Serrapini is less than 5 meters wide, and present a 29-52. maximum depth of 50 cm. The brook bed is cov- KEITH, P., LE BAIL, P.-Y. & PLANQUETTE, P. 2000. Atlas des ered with pebbles and laterized sediments. Physical poissons d’eau douce de Guyane. Tome 2, fascicule 1. Batra- and chemical water parameters at the site of cap- choidiformes, Mugiliformes, Beloniformes, Cyprinodontif- ture were: pH 6.28, conductivity 24 us/cm, dis- ormes, Synbranchiformes, Perciformes, Pleuronectiformes, Tetraodontiformes. Muséum National d’Histoire Na- solved oxygen 5.8 mg/L, turbidity 8 unt, and tem- turelle/Institut d Écologie et de Gestion de la Biodiver- perature 24.2°C. Eight specimens were collected, a sité/Service du Patrimoine Naturel, Paris, 1-295 pp. single male (27.5 mm SL) and 7 females (22.1- VERMEULEN, F. 2015. The Killi’s of the lost world. Vol.1. 24.2 mm SL). One congener, Laimosemion geayi Pastelaria Studius. Portugal, 158 pp. aqua vol. 24 no. 1 - 05 June 2018 26.
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