Ichthyofauna of Marinheiros Island, Patos Lagoon estuary, southern Brazil

Marinheiros is the largest island of the estuarine archipelago of Patos lagoon and is considered an area of biological relevance in the coastal region of the extreme south of Brazil. Aiming to contribute to the knowledge on the biodiversity of this important area, we conducted an ichthyofaunistic inventory in the limnic environments of the island. Twenty-seven field trips were performed between April 2015 and May 2017. A total of 12 sites representative of habitats of an intermittent shallow lagoon, intermittent pools and a perennial artificial channel were sampled. Sampling of 2,436 specimens revealed the occurrence of 30 species, including the non-native piscivorous Acestrorhynchus pantaneiro. Characiformes was the most diverse order (18 species), followed by Cichliformes (four species) and Cyprinodontiformes (three species). Characiformes was also the most numerically abundant order (77%) followed by Cichliformes (17.6%) and Cyprinodontiformes (5.1%). The species richness recorded in Marinheiros Island is is comparable to the richness observed for lotic systems of southernmost Brazilian coastal plain. The fish assemblage is composed mainly of species of limnic habits whereas few taxa of estuarine-marine-limnic and estuarine-limnic habits were recorded. In view of the presence of allochtonous A. pantaneiro and its potential to impact native species, monitoring is recommended to the ichthyofauna of Marinheiros Island and the other estuarine islands, as well as peninsular systems connected to Patos lagoon estuary.

[1]  E. Périco,et al.  First record of the Lesser Snouted Treefrog Scinax nasicus (Cope, 1862) in Brazilian coast and new species records for the state of Rio Grande do Sul. , 2016, Brazilian journal of biology = Revista brasleira de biologia.

[2]  L. Malabarba,et al.  Inventory of the freshwater fishes from a densely collected area in South America-a case study of the current knowledge of Neotropical fish diversity. , 2016, Zootaxa.

[3]  F. Corrêa,et al.  The ichthyofauna of limnic systems in Quaternary deposits of extreme southern Brazil , 2016, ZooKeys.

[4]  C. Monteiro-Neto,et al.  Marine protected area and the spatial distribution of the gill net fishery in Copacabana, Rio de Janeiro, RJ, Brazil. , 2016, Brazilian journal of biology = Revista brasleira de biologia.

[5]  M. Kluge.  Ecological Studies In Tropical Fish Communities , 2016 .

[6]  F. Corrêa,et al.  Ichthyofauna of the hydrographic basin of the Chasqueiro Stream (Mirim Lagoon system, southern Brazil): generating subsidies for conservation and management , 2015 .

[7]  C. Freitas,et al.  Intra- and inter-annual changes in the condition factors of three Curimatidae detritivores from Amazonian floodplain lakes , 2015 .

[8]  F. Corrêa,et al.  NEW AREA OF OCCURRENCE TO Acestrorhynchus pantaneiro (MENEZES, 1992) (CHARACIFORMES, ACESTRORHYNCHIDAE) IN THE CHASQUEIRO STREAM BASIN, PATOS-MIRIM SYSTEM, RIO GRANDE DO SUL, BRAZIL , 2014 .

[9]  S. M. Hartz,et al.  Estabilidade e persistência de uma comunidade de peixes em lagoa costeira neotropical , 2013 .

[10]  R. F. Bastos,et al.  Scientific Note Fish species list of coastal streams in southern Brazil, with notes on austral distribution limits of marine and freshwater endangered species , 2013 .

[11]  C. B. Fialho,et al.  Scientific Note First record of the non-native species Acestrorhynchus pantaneiro Menezes, 1992 (Characiformes, Acestrorhynchidae) in the Tramandaí River system, Rio Grande do Sul, Brazil , 2013 .

[12]  C. M. Vooren,et al.  Abundance, breeding and food of the Little Blue Heron Egretta caerulea (Aves, Ardeidae) in the Patos Lagoon estuary, a recently colonized area in southern Brazil , 2012 .

[13]  T. Freitas,et al.  Identification of Priority Areas for Conservation of Two Endangered Parapatric Species of Red-bellied Toads Using Ecological Niche Models and Hotspot Analysis , 2012 .

[14]  F. M. Quintela,et al.  Reptiles recorded in Marinheiros Island, Patos Lagoon estuary, southern Brazil , 2011 .

[15]  M. A. Bemvenuti,et al.  Distribuição, dominância e estrutura de tamanhos da assembleia de peixes da lagoa Mangueira, sul do Brasil , 2009 .

[16]  Fernando Marques Quintela,et al.  Relação dos anfíbios da Ilha dos Marinheiros, estuário da Lagoa dos Patos, Rio Grande do Sul, Brasil , 2009 .

[17]  Paulo H. F. Lucinda,et al.  Systematics and biogeography of the genus Phalloceros Eigenmann, 1907 (Cyprinodontiformes: Poeciliidae: Poeciliinae), with the description of twenty-one new species , 2008 .

[18]  N. M. Gianuca,et al.  Ocorrência regular da garça-azul Egretta caerulea (Ciconiiformes, Ardeidae) no estuário da Lagoa dos Patos, Rio Grande do Sul, Brasil , 2008 .

[19]  F. M. Quintela,et al.  Amphibia, Anura, Bufonidae, Melanophryniscus dorsalis: Distribution extension in the State of Rio Grande do Sul, Brazil. , 2007 .

[20]  J. Vieira,et al.  Checklist comparison and dominance patterns of the fish fauna at Taim Wetland, South Brazil , 2006 .

[21]  J. Vieira,et al.  Evidence of habitat fragmentation affecting fish movement between the Patos and Mirim coastal lagoons in southern Brazil , 2006 .

[22]  C. B. Fialho,et al.  Primeiro registro de Acestrorhynchus pantaneiro Menezes, 1992 (Characiformes, Acestrorhynchidae) no sistema da laguna dos Patos, Rio Grande do Sul, Brasil , 2006 .

[23]  M. A. Miglino,et al.  Morfologia da glândula mamária de gambás da espécie Didelphis sp associada ao modelo marsupial , 2006 .

[24]  A. Arthington,et al.  Translocation and Spread of Piscivorous Fishes in the Burdekin River, North-eastern Australia , 2006, Biological Invasions.

[25]  D. Loebmann,et al.  Distribuição espacial e abundância das assembléias de peixes no Parque Nacional da Lagoa do Peixe, Rio Grande do Sul, Brasil , 2005 .

[26]  K. Winemiller,et al.  Comparison of 1982–1983 and 1997–1998 El Niño effects on the shallow-water fish assemblage of the Patos Lagoon estuary (Brazil) , 2004 .

[27]  C. B. Fialho,et al.  Fish community composition, seasonality and abundance in Fortaleza Lagoon, cidreira , 2004 .

[28]  W. Burgess.  CHECK LIST OF THE FRESHWATER FISHES OF SOUTH AND CENTRAL AMERICA , 2004, Copeia.

[29]  A. Garcíaa,et al.  Effects of 1997 – 1998 El Niño on the dynamics of the shallow-water fish assemblage of the Patos Lagoon Estuary ( Brazil ) , 2003 .

[30]  P. Tagliani.  Ecologia da assembleia de peixes de tres riachos da planicie costeira do rio grande do sul , 1994 .

[31]  B. Kjerfve.  Comparative oceanography of coastal lagoons , 1986 .