Amphibia, Anura, Bufonidae, Melanophryniscus dorsalis: distribution extension in the State of Rio Grande do Sul, Brazil

Quintela, Fernando Marques; Medvedowisky, Igor Gonçalves; Neves, Luís Fernando; Loebmann, Daniel; Figueiredo, Mario Roberto Chim

doi:10.15560/3.2.100

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Considerable new occurrence data were recorded for this study (Table S1), following the indicated areas in Figure S1. We also included the new record published by Quintela et al (2007), which extends the known distribution of M. dorsalis 285 kilometers to the south and was reconfirmed by this study (point 7) (see Table S1). Field expeditions were conducted to confirm species occurrence in points 6, 8 and 10 (M. dorsalis), with a successful rediscovery at point 6 and no success at points 8 and 10.…”

Section: Resultsmentioning

confidence: 83%

Identification of priority areas for conservation of two endangered parapatric species of red-bellied toads using ecological niche models and hotspot analysis

Bernardo-Silva¹,

Martins-Ferreira²,

Maneyro³

et al. 2012

NatCon

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The red-bellied toads Melanophryniscus dorsalis and M. montevidensis are listed as vulnerable on the IUCN list. Uruguayan populations of M. montevidensis are no longer found near the southern limit of its distribution, and information on the ecology and distribution of both species is still needed. We are proposing consensus models and hotspot analysis to identify priority conservation areas for these toads. Here, we present a consensus model based on three algorithms that use presence-only data (BIOCLIM, GARP and Maximum Entropy). Through consensus models, we used a new OpenModeller implementation called "hotspot", which identifies areas of high environmental suitability. Our results indicated areas of high environmental suitability for both species. Fieldwork validation also indicated their absence from some high-suitability areas identified by the consensus and hotspot models. Five hotspot areas of great interest to preserve both species are proposed

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Section: Resultsmentioning

confidence: 83%

Identification of priority areas for conservation of two endangered parapatric species of red-bellied toads using ecological niche models and hotspot analysis

Bernardo-Silva¹,

Martins-Ferreira²,

Maneyro³

et al. 2012

NatCon

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“…Sampling efforts on anuran (Quintela et al 2007, Bernardo-Silva et al 2012, Dalmolin et al 2017, reptilian (Quintela et al 2011) and avian fauna (Gianuca et al 2007(Gianuca et al , 2008(Gianuca et al , 2012 in the insular environments have identified the occurrence of some unexpected taxa for the region, including the southernmost and isolated population of the threatened red-bellied toad Melanophryniscus dorsalis (Mertens, 1933) (Quintela et al 2006, Bernardo-Silva et al 2012. While some groups such as herpetofauna and avifauna are relatively well-known in the island, the ichthyofauna remained practically unexplored.…”

Section: Introductionmentioning

confidence: 99%

Ichthyofauna of Marinheiros Island, Patos Lagoon estuary, southern Brazil

et al. 2018

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Abstract: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. Keywords: Acestrorhynchus pantaneiro, ictiocenose, invasive species, Neotropical region Ictiofauna da Ilha dos Marinheiros, estuário da Lagoa do Patos, sul do BrasilResumo: Marinheiros é a maior ilha do arquipélago estuarino da Lagoa dos Patos e é considerada uma área de relevância biológica na região costeira do extremo sul do Brasil. Com o objetivo de contribuir para o conhecimento sobre a biodiversidade desta importante área, realizamos um inventário ictiofaunístico nos ambientes limnicos da ilha. Vinte e sete visitas foram realizadas entre abril de 2015 e maio de 2017. Um total de 12 locais representativos dos habitats de uma lagoa rasa intermitente, poções intermitentes e um canal artificial perene foram amostrados. A amostragem de 2.436 espécimes revelou a ocorrência de 30 espécies, incluindo o piscívoro não-nativo Acestrorhynchus pantaneiro. Characiformes foi a ordem mais diversa (18 espécies), seguido por Cichliformes (quatro espécies) e Cyprinodontiformes (três espécies). Characiformes foi também a ordem mais numericamente abundante (77%), seguida po Cichliformes (17,6%) e Cyprinodontiformes (5,1%). A riqueza de espécies registrada na Ilha dos Marinheiros é comparável à riqueza observada para sistemas lóticos da planície costeira do extremo sul do Brasil. A assembleia de peixes é composta principalmente por espécies de hábitos límnicos, enquanto que poucos taxa de hábitos estuarino-marinho-límnico e estuarino-límnico foram registrados. Em vista da presença do alóctono A. pantaneiro e ...

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