Feeding and reproductive ecology of Cichla piquiti Kullander &amp; Ferreira, 2006 within its native range, Lajeado reservoir, rio Tocantins basin

Marto, Vanilcia Clementino de Oliveira; Akama, Alberto; Pelicice, Fernando Mayer

doi:10.1590/1982-0224-20140165

Cited by 11 publications

(6 citation statements)

References 36 publications

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“…The observation of mature males and females during most of the year seems to be a general consensus for nonnative Cichla populations in altered environments in Brazil (Chellapa et al, 2003;Gomiero & Braga, 2004a;Gomiero et al, 2009;Vieira et al 2009;Normando et al 2009;Luiz et al, 2011;Souza et al, 2008), the United States (Shafland, 1999) and Panama (Zaret, 1980). A similar pattern was also reported for populations in native ranges of distribution (but impacted by dams), as in the cases of Cichla piquiti Kullander & Ferreira, 2006, in the Lajeado Reservoir (Tocantins-Araguaia River basin;Marto et al, 2015) and Cichla vazzoleri Kullander & Ferreira, 2006, in the Balbina Reservoir (Central Amazon;Horie, 2013). Although these studies in altered environments indicate that reproduction can potentially occur over a long period, reproductive peaks vary considerably within and between populations, at times and under contrasting environmental conditions.…”

Section: Regenerationmentioning

confidence: 56%

“…Franco et al (2018) reported that increased reservoir water retention time, when combined with warmer and more transparent waters, can increase the abundance of peacock bass. The advantage of the strategy of equilibrium in altered environments may be associated to the fact that the lentic conditions and greater hydrological stability of the reservoirs promote adequate conditions for nest building and protection of juveniles (Marto et al, 2015;Muñoz et al, 2006;Winemiller, 2001). Consequently, the strategy of equilibrium and plasticity in reproductive traits may be the main factors inherent in the successful colonization and settlement of the peacock bass in the environments in which the species were introduced.…”

Section: Regenerationmentioning

confidence: 99%

“…Invasiveness capability seems not to be influenced by genetic diversity and hybridization (Carvalho et al, 2014). Persistence in new environments seems to be linked to phenotypic plasticity in reproductive traits such as fecundity (Normando et al, 2009), size at first maturation (Chellappa et al, 2003;Gomiero et al, 2009) and spawning season (Jepsen et al, 1999;Marto et al, 2015;Vieira et al, 2009). The variability in reproductive traits shown between different populations of Cichla demands that accurate local information be generated to support the correct management of these species, which are today one of the principal invasive piscivores in the world.…”

Section: Introductionmentioning

confidence: 99%

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Equilibrium reproductive strategy of the peacock bass Cichla kelberi facilitates invasion into a Neotropical reservoir

Guedes

Gomes

Nascimento

et al. 2020

Journal of Fish Biology

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The reproductive strategy of the non-native predator cichlid Cichla kelberi was determined to explain its success after more than 60 years of being introduced into an isolated reservoir in southeastern Brazil. This was one of the first-known translocations of the genus Cichla out of its natural range. Macro-and microscopy characteristics of the gonadal development stages and the maturation phases, along with the reproductive features (size at first maturation size, gonado-somatic index and sex ratio), were described. It was hypothesized that the stable conditions of the reservoir, with low connectivity, weakly defined spatial gradient and slight seasonal changes in environmental variables, favour the equilibrium strategy that enables predators to have high offspring survivorship because of great parental investment in individual progeny. Sex ratio was well balanced, with males and females reaching first maturity between 30.0 and 28.6 cm total length (L T), respectively. The stages of oocyte (primary and secondary growth, vitellogenic and atresia) and spermatocyte (spermatogonia, spermatocytes, spermatids and spermatozoa) development were identified. Five phases of gonadal development (immature, developing, spawning capable, regressing and regenerating) were described for both sexes. A long reproductive season was found, with spawning peaks in August/September and, to a lesser extent, in April/May. Parental care and spawns in parcels (batch spawns) corroborated the raised equilibrium strategy that was effective in this isolated reservoir. This species developed reproductive mechanisms that fit to different environmental conditions, with multiple spawning being associated with lentic environments and asynchronous development of oocytes, which are released over long periods. The reproductive plasticity in reservoirs may be one of the main factors inherent to the successful of colonization and establishment of the peacock bass in the environments in which they were introduced.

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Section: Regenerationmentioning

confidence: 56%

Section: Regenerationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Equilibrium reproductive strategy of the peacock bass Cichla kelberi facilitates invasion into a Neotropical reservoir

Guedes

Gomes

Nascimento

et al. 2020

Journal of Fish Biology

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“…As populações de C. piquiti, espécie nativa da bacia hidrográfica do Tocantins-Araguaia, foram avaliadas em reservatórios situados em diferentes latitudes e, consequentemente, diferentes características ambientais e climáticas. Os estudos foram realizados em Tocantins (Marto et al, 2015), São Paulo (Franceschini et al, 2013)…”

Section: Proporção Sexualunclassified

“…Em sua área de distribuição natural (Muñoz et al, 2006), os machos apresentaram peso total superior de duas vezes a três vezes mais elevada que aquelas determinadas nos ambientes onde o tucunaré foi introduzido. O valor de massa corporal mais alto obtido neste estudo foi observado na população de C. piquiti investigada por Marto et al (2015), sendo igual a 3,3kg. Além disso, também foi o segundo maior valor em comprimento, menor apenas que os 55cm relatados para a espécie C. monoculus na Amazônia (Muñoz et al, 2006).…”

Section: Estrutura Populacional Em Comprimento E Pesounclassified

Estrutura Populacional de Espécies do Gênero Cichla (Osteichthyes: Cichliformes) Introduzidas em Diferentes Regiões Brasileiras – uma Revisão Bibliográfica

Monteiro

2022

BioBrasil

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Os sistemas de água doce neotropicais são importantes abrigos da biodiversidade global de peixes. Os tucunarés (Cichla spp) são peixes endêmicos dessa região biogeográfica, ocorrendo naturalmente no Brasil e outros países da América do Sul como Venezuela, Colômbia, Bolívia, Peru, Guiana Francesa, Guiana e Suriname. O interesse econômico pelo mercado de peixes ornamentais, da pesca esportiva, aquicultura e, sobretudo, a criação em reservatórios, culminaram na ampla introdução dos tucunarés nas demais bacias hidrográficas brasileiras e do mundo. O presente artigo teve como objetivo realizar uma revisão bibliográfica sobre a estrutura populacional de diferentes espécies do gênero Cichla introduzidas em ecossistemas não nativos no Brasil. A estrutura populacional foi caracterizada pela proporção sexual, comprimento e peso dos indivíduos. Fatores como as características reprodutivas e alimentares que contribuem para o estabelecimento das populações também foram comentados, bem como os possíveis impactos da introdução do tucunaré à ictiofauna nativa. Apesar da dificuldade de comparação direta dos dados obtidos em cada artigo, as populações de tucunaré demonstraram estar bem estabelecidas em reservatórios, tanto em sua amplitude de ocorrência natural quanto no semiárido nordestino e nas regiões Sudeste e Centro- Oeste do Brasil. A maioria dos estudos identificados em nossa busca foi realizada em reservatórios, reforçando a importância das pesquisas sobre o tucunaré nesses ambientes. No entanto, houve poucos estudos focados na avaliação da estrutura das populações de tucunarés em si. Considerando que estas espécies apresentam elevado potencial de causar impactos negativos à biodiversidade nativa, o monitoramento populacional contínuo é importante para identificar e mitigar os possíveis impactos.

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Invasive peacock basses (Cichla spp.) and decreased abundance of small native fish in Brazilian reservoirs

Franco

Petry

García‐Berthou

et al. 2022

Aquatic Conservation

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1. Peacock basses (Cichla spp.) have been introduced in impoundments for decades, and their negative impacts on the native fish fauna have been documented.However, previous studies largely focused on the overall responses of fish assemblages, often neglecting specific predator-prey interactions and the underlying effects of environmental characteristics.2. Here, the effects of peacock bass introduction on the size structure (<120, 120-180 and >180 mm in total length) of fish assemblages in reservoirs of the Paraíba do Sul river basin were assessed. The abundance and time since the introduction of peacock basses were used as predictors, together with reservoir features, limnological variables and habitat composition as potential influencing factors.3. Descriptors of the overall community (richness, abundance and species composition) were only marginally associated with the occurrence of peacock basses. However, small and (to a lesser extent) medium-sized fish were adversely affected by the abundance and introduction time of peacock basses. Two pelagic native characidsnamely Astyanax cf. bimaculatus and Oligosarcus hepsetuswere the most affected.4. Redundancy analysis showed that reservoir age and macrophyte cover were the best predictors of fish assemblage composition. Older reservoirs and reservoirs with a higher cover of macrophytes showed a greater abundance of catfish and characids, respectively. 5. Peacock basses appear to affect fish assemblages through predation on small fish.Therefore, analyses of assemblages by size are recommended, as the use of overall assemblage descriptors may not be sufficient to capture the adverse effects of peacock basses. Moreover, these findings underscore the importance of conserving and restoring habitats in littoral zones, which function as refuges for native fish species in reservoirs. Further educational and management measures are warranted to prevent the spread of peacock basses to other reservoirs in Brazil.

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Feeding and reproductive ecology of Cichla piquiti Kullander & Ferreira, 2006 within its native range, Lajeado reservoir, rio Tocantins basin

Cited by 11 publications

References 36 publications

Equilibrium reproductive strategy of the peacock bass Cichla kelberi facilitates invasion into a Neotropical reservoir

Equilibrium reproductive strategy of the peacock bass Cichla kelberi facilitates invasion into a Neotropical reservoir

Estrutura Populacional de Espécies do Gênero Cichla (Osteichthyes: Cichliformes) Introduzidas em Diferentes Regiões Brasileiras – uma Revisão Bibliográfica

Invasive peacock basses (Cichla spp.) and decreased abundance of small native fish in Brazilian reservoirs

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