Unraveling the systematics and evolution of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species complex

Argolo, Leandro Araujo; López‐Fernández, Hernán; Batalha‐Filho, Henrique; Affonso, Paulo Roberto Antunes de Mello

doi:10.1016/j.ympev.2020.106855

Cited by 28 publications

(28 citation statements)

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“…G. brasiliensis is a Brazilian native species, distributed from the Amazon Basin to the north region of Argentina and Uruguay (Rantin and Petersen, 1985;Kullander et al, 2003), which presents omnivorous feeding habits (Abelha and Goulart, 2004) and can reach up to 35 cm total length (Beatty et al, 2013) This fish can be found in water bodies with distinct characteristics, including in estuaries (Monteiro-Neto et al, 1990;Malabarba et al, 2013), which makes it an option for mariculture in such regions. The group Geophagus covers 10 species/lineages (Argolo et al, 2020), and it is popularly known as cará or acará. It presents gray coloration with shades varying from blue to green (Weis et al, 1981), making it a much appreciated species in fishkeeping (Beatty et al, 2013).…”

Section: /8mentioning

confidence: 99%

GROWTH OF <i>Geophagus brasiliensis</i> REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

et al. 2021

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The aim of this study was to evaluate the growth performance of Geophagus brasiliensis rearedb under distinct temperatures (24.3 ± 0.9, 28.1 ± 1.0, and 31.7 ± 0.8°C) and feeding regimes (apparent satiety and a supply of 4% of the total biomass). About 500 wild-caught individuals were sorted and identified, to screen 180 fish to be used in the experiment (6.81 ± 1.15 g and 7.51 ± 0.47 cm). After a 55-day acclimatization period, the fish were distributed in experimental tanks, considering a double factorial randomized blocks scheme, composed of six treatments and three replicates. Growth performance parameters, somatic indexes and carcass yield were evaluated at the end of the experimental period (72 days). Fish fed to the point of apparent satiety presented higher (p <0.05) final weight, weight gain, specific growth rate and hepatosomatic index. The animals reared at a temperature of 24.3°C displayed higher (p <0.05) final weight, weight gain, specific growth, hepatosomatic index, lower visceral fat, and feed conversion index. It was concluded that G. brasiliensis presents higher productive indexes when fed until apparent satiety and reared in temperatures close to 24.3°C.

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Section: /8mentioning

confidence: 99%

GROWTH OF <i>Geophagus brasiliensis</i> REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

et al. 2021

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“…Complementarmente, puçá malha 5 mm (entre nós adjacentes) foi aplicado ativamente por 30 minutos em cada ponto, sob a vegetação marginal e no substrato, revolvendo troncos e pedras. As identificações foram baseadas em literatura relativa à ictiofauna regional (OYAKAWA et al, 2006;ABRAHÃO et al, 2015), bem como trabalhos de descrição e/ou revisão de algumas espécies (LUCINDA, 2008;THOMAZ et al, 2019;ARGOLO et al, 2020;COSTA et al, 2021). Após o processo de identificação, a classificação e nomenclatura seguiram Fricke et al (2021) e Betancur-R et al (2017) para Cichlidae.…”

Section: Procedimentos De Captura E Identificaçãounclassified

Ictiofauna Da Área De Influência De Condomínio Industrial Localizado Em Fragmento De Mata Atlântica, No Litoral Norte De Santa Catarina, Brasil

Ticiani¹,

Keppeler²,

Onghero³

et al. 2021

Acta

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O uso de peixes como bioindicadores possui grande importância no diagnóstico da integridade biótica de ecossistemas naturais. Os objetivos desse trabalho foram contribuir com o conhecimento da fauna de peixes de um fragmento de Mata Atlântica e avaliar a influência da operação de atividade antrópica sobre os padrões de composição e distribuição da ictiofauna. O estudo foi conduzido na área de influência de uma siderúrgica, em Santa Catarina. As amostragens ocorreram bimestralmente em quatro pontos, entre setembro de 2017 e outubro de 2018. A análise de dados incluiu a caracterização da ictiofauna quanto a constância, origem e ameaça, além de análises de suficiência amostral, variação espaço-temporal e avaliação da influência das variáveis ambientais. Foram registrados 924 indivíduos, pertencentes a 15 espécies, dentre as quais destaca-se Hollandichthys multifasciatus, considerado “Em Perigo” (EN) a nível estadual. Nós observamos um padrão de estruturação longitudinal vinculado a melhora na qualidade de água, com a redução dos níveis de condutividade e aumento do oxigênio no sentido montante-jusante. Demonstramos a importância de remanescentes ciliares de Mata Atlântica, que atuam na melhoria da qualidade de água e influenciam na estruturação da ictiofauna. Ademais, constatamos que as atividades do condomínio industrial avaliado não afetam diretamente a comunidade de peixes.

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“…This is also consistent with the study of Melo et al (2021) , who studied patterns of diversification of Characoid fishes, and identified a burst of diversification in Anostomidae, Serrasalmidae and Characidae families. DNA-based species discovery analyses focusing on lower taxonomic units such as genera of cichlids, also discovered multiple divergent evolutionary lineages ( e.g ., Astronotus Swainson, 1839 ( Colatreli et al, 2012 ); Apistogramma Regan, 1913 ( Tougard et al, 2017 ); Gymnogeophagus Miranda-Ribeiro, 1918 ( Říčan et al, 2018 ); Australoheros Říčan & Kullander, 2006 ( Ottoni et al, 2019 ); and Geophagus Heckel, 1840 ( Alves-Silva & Dergam, 2014 ; Carvalho et al, 2018 ; Argolo et al, 2020 )) suggesting cryptic diversity and, possibly, undescribed species.…”

Section: Introductionmentioning

confidence: 99%

“…The three groups also have allopatric distribution in the Neotropics: The Geophagus sensu stricto species group, with 20 species is distributed within the Amazon, Orinoco, Parnaiba, and northern Atlantic coast river basins; the ‘ Geophagus ’ steindachneri species group, with three trans-Andean species is distributed in Panamá, Colombia and Venezuela; and the ‘ Geophagus ’ brasiliensis species group, with eight species is distributed in eastern South American river basins. While the ‘ Geophagus ’ steindachneri and ‘ Geophagus ’ brasiliensis species groups have been left without a formal generic assignment ( Argolo et al, 2020 ) and their phylogenetic relationships remains unclear ( López-Fernández, Winemiller & Honeycutt, 2010 ; Ilves, Torti & López-Fernández, 2018 ), this has not impeded active taxonomic interest in these species groups. Recently an integrative taxonomic analysis of the ‘ G .’ brasiliensis species group using SLSD methods, multilocus RADseq data, and geometric morphometrics ( Argolo et al, 2020 ) provided support for the eight nominal species of this group and suggested the recognition of an additional two species, increasing the taxonomic diversity of this group by 20%.…”

Section: Introductionmentioning

confidence: 99%

“…While the ‘ Geophagus ’ steindachneri and ‘ Geophagus ’ brasiliensis species groups have been left without a formal generic assignment ( Argolo et al, 2020 ) and their phylogenetic relationships remains unclear ( López-Fernández, Winemiller & Honeycutt, 2010 ; Ilves, Torti & López-Fernández, 2018 ), this has not impeded active taxonomic interest in these species groups. Recently an integrative taxonomic analysis of the ‘ G .’ brasiliensis species group using SLSD methods, multilocus RADseq data, and geometric morphometrics ( Argolo et al, 2020 ) provided support for the eight nominal species of this group and suggested the recognition of an additional two species, increasing the taxonomic diversity of this group by 20%.…”

Section: Introductionmentioning

confidence: 99%

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Mapping the hidden diversity of the Geophagus sensu stricto species group (Cichlidae: Geophagini) from the Amazon basin

Ximenes

Bittencourt

Machado

et al. 2021

PeerJ

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South American freshwater ichthyofauna is taxonomically the most diverse on the planet, yet its diversity is still vastly underestimated. The Amazon basin alone holds more than half of this diversity. The evidence of this underestimation comes from the backlog of morphologically distinct, yet undescribed forms deposited in museum collections, and from DNA-based inventories which consistently identify large numbers of divergent lineages within even well-studied species groups. In the present study, we investigated lineage diversity within the Geophagus sensu stricto species group. To achieve these objectives, we analyzed 337 individuals sampled from 77 locations within and outside the Amazon basin representing 10 nominal and six morphologically distinct but undescribed species. We sequenced the mitochondrial cytochrome c oxidase subunit I (COI) and delimited lineages using four different single-locus species discovery methods (mPTP-15 lineages; LocMin-14 lineages; bGMYC-18 lineages; and GMYC-30 lineages). The six morphologically distinct but undescribed species were also delimited by the majority of the species discovery methods. Five of these lineages are restricted to a single collection site or a watershed and their habitats are threatened by human activities such as deforestation, agricultural activities and construction of hydroelectric plants. Our results also highlight the importance of combining DNA and morphological data in biodiversity assessment studies especially in taxonomically diverse tropical biotas.

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Unraveling the systematics and evolution of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species complex

Cited by 28 publications

References 70 publications

GROWTH OF <i>Geophagus brasiliensis</i> REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

GROWTH OF <i>Geophagus brasiliensis</i> REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

Ictiofauna Da Área De Influência De Condomínio Industrial Localizado Em Fragmento De Mata Atlântica, No Litoral Norte De Santa Catarina, Brasil

Mapping the hidden diversity of the Geophagus sensu stricto species group (Cichlidae: Geophagini) from the Amazon basin

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