Diet and reproductive dynamics of Trachelyopterus lucenai (Siluriformes: Auchenipteridae) in subtropical coastal lagoons in southern Brazil

Maia, Renata Rodrigues; Artioli, Luiz Guilherme Schultz; Hartz, Sandra Maria

doi:10.1590/s1984-46702013000300002

Cited by 14 publications

(14 citation statements)

References 26 publications

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“…In T. piresi, gonadal activity peaked mainly in the dry season, which is distinct from the data available for other auchenipterid species (Araujo et al, 1999;Silva and Viana, 2003;Freitas et al, 2011;Maia et al, 2013;Santos et al, 2013). A reproductive peak in the dry season may be related to a strategy for the selection of spawning sites.…”

Section: Discussionmentioning

confidence: 54%

“…Some recent studies have focused on reproductive parameters in a small number of auchenipterid species (Freitas et al, 2011;Maia et al, 2013;Santos et al, 2013). The present study provides the first published data on the biology of Tocantinsia piresi.…”

Section: Discussionmentioning

confidence: 76%

“…A predominance of females has been observed in other auchenipterids (Araujo et al, 1999;Becker, 2001;Freitas et al, 2011;Maia et al, 2013) and may be the result of population-level strategies adopted for the optimisation of reproductive success, given that males can fertilise more than one female (Burgess, 1989).…”

Section: Discussionmentioning

confidence: 96%

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Influence of the flood pulse on the reproduction of Tocantinsia piresi (Miranda Ribeiro) and Auchenipterus nuchalis (Spix & Agassiz) (Auchenipteridae) of the middle Xingu River, Brazil

et al. 2015

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This study investigates the influence of the flood pulse on the reproductive biology of the auchenipterids Tocantisia piresi (Miranda Ribeiro, 1920) and Auchenipterus nuchalis (Spix & Agassiz, 1829) from the middle Xingu River in the Brazilian state of Pará. The specimens were collected every three months between April, 2012, and January, 2014, covering four distinct periods (flood, ebb, dry, and filling). The sex ratio, size at first maturity, gonadosomatic index, and condition factor were analysed in the two species, and evaluated in the context of the different hydrological periods. A total of 897 specimens of T. piresi were collected, of which 467 were female, and 430 males, and 383 A. nuchalis (286 females and 97 males). In T. piresi, the sex ratio was biased only in the filling and ebb periods, whereas in A. nuchalis, it departed significantly from the expected ratio of 1:1 in all periods, with a predominance of females. The female T. piresi mature at a smaller size than the males, with the opposite of the pattern being recorded in A. nuchalis. In T. piresi, the breeding peak was observed during the low water periods, whereas in A. nuchalis, the peak was recorded in the flood periods. Male and female T. piresi presented similar positively allometric growth rates, whereas in A. nuchalis, growth was negatively allometric, but rates were different between genders. A higher condition factor was recorded in the females of both species during the ebb period. Overall, the results of this study reveals distinct flood pulse effects on the reproductive parameters of the two auchenipterid species studied; for A. nuchalis the spawning seems to happen at the flood period and for T. piresi at the dry season of the middle Xingu River.Keywords: Amazon, Auchenipteridae, flood pulse, fish reproduction. Influência do pulso de inundação na reprodução de

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Section: Discussionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 76%

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Influence of the flood pulse on the reproduction of Tocantinsia piresi (Miranda Ribeiro) and Auchenipterus nuchalis (Spix & Agassiz) (Auchenipteridae) of the middle Xingu River, Brazil

et al. 2015

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“…3;Hartz, Barbieri, 1994;Fialho et al, 1998;Schifino et al, 1998;Becker, 2001;Nunes et al, 2004;Maia et al, 2013). One example is C. voga.…”

Section: Discussionmentioning

confidence: 99%

Defining the reproductive period of freshwater fish species using the Gonadosomatic Index: a proposed protocol applied to ten species of the Patos Lagoon basin

et al. 2018

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This contribution records the reproductive periods of ten dominant freshwater fish species from the Patos Lagoon and Guaíba Lake (Astyanax fasciatus, Cyphocharax voga, Hoplias malabaricus, Oligosarcus jenynsii, Oligosarcus robustus, Hoplosternum littorale, Loricariichthys anus, Parapimelodus nigribarbis, Trachelyopterus lucenai, Pachyurus bonariensis). Data were derived from monthly samples in Casamento Lake (northern Patos Lagoon; Nov. 2002 to Apr. 2004) and Guaíba Lake (Jun. 2005 to May 2006). The reproductive period was determined according to the monthly variation of the gonadosomatic index (GSI). Fish reproduction was identified during all months of the year. Oligosarcus jenynsii started reproduction in winter, but extended spawning to spring (early warming-water reproduction). Three species also presented reproduction during warming water months, but beginning in spring and finishing in summer (late warm-water reproduction): P. nigribarbis, T. lucenai and P. bonariensis. Three species presented relatively short reproduction periods on summer (spotted warm-water reproduction): H. malabaricus, H. littorale and L. anus, and only one species reproduces almost continuously during warmer waters (long-season warm-water reproduction): A. fasciatus. Finally, two other species presented a very distinct reproductive pattern, starting reproduction on late summer but increasing GSI values along autumn and winter (long-season cooling-water reproducers): C. voga and O. robustus.

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“…Regarding the Family Auchenipteridae (Siluriformes), available data on ecology and biology addresses only a few species (Moresco & Bemvenuti, 2005;Santos, 2005;Freitas et al 2011;Maia et al, 2013;Santos et al, 2013). The Auchenipteridae species are endemic to the Neotropics and belong to two subfamilies: Centromochlinae and Auchenipterinae (Birindelli, 2014).…”

mentioning

confidence: 99%

Distribution, feeding and ecomorphology of four species of Auchenipteridae (Teleostei: Siluriformes) in Eastern Amazonia, Brazil

Freitas

Montag

Barthem

2017

Iheringia, Sér. Zool.

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ABSTRACT. Fish exhibit morphological, physiological and behavioral specializations which enable them to display diff erent ways to explore the environments and resources. Thus, the aim of this study was to verify how four Auchenipteridae species diff er in the distribution, feeding habits and morphological traits: Auchenipterichthys longimanus (Günther, 1864), Auchenipterus nuchalis (Spix & Agassiz, 1829), Tatia intermedia (Steindachner, 1877) and Trachelyopterus galeatus (Linnaeus, 1766). This study was conducted in rivers and bays of the Anapú Basin, Pará State (Brazil), where these species are abundant. Specimens were collected using gillnets, and after caught the stomachs were removed for the contents analyzes. Eighteen morphometric measurements from ten adult specimens of each species were taken, combined into fi fteen ecomorphological attributes. The species distribution showed that A. longimanus was restricted to rivers, while the others were exclusively caught in the bays. All four species had their diet composed of allochthonous insects, but A. longimanus also exhibited a great frugivorous habit. The most important ecomorphological attributes were relative to the consumption of larger food items (for A. longimanus and T. galeatus) and to the longer swimming capacity (for A. longimanus and T. intermedia). These morphological diff erences and the trophic diversity presented in this study highlighted some important information about how ecomorphological similar species behave and share resources, which may play a signifi cant role on the coexistence of these species in the Anapú Basin.KEYWORDS. Fish, morphology, diet, adaptation.RESUMO. Distribuição, alimentação e ecomorfologia de quarto espécies de Auchenipteridae (Teleostei: Siluriformes) da Amazônia Oriental, Brasil. Peixes apresentam especializações morfológicas, fi siológicas e comportamentais que permite a exploração do ambiente e dos recursos de diferentes maneiras. Sendo assim, o objetivo deste trabalho foi verifi car como quatro espécies de peixes da Família Auchenipteridae diferem quanto à distribuição, alimentação e traços morfológicos: Auchenipterichthys longimanus (Günther, 1864), Auchenipterus nuchalis (Spix & Agassiz, 1829), Tatia intermedia (Steindachner, 1877) e Trachelyopterus galeatus (Linnaeus, 1766). Esse estudo foi realizado nos rios e baías da Bacia do Rio Anapú, Estado do Pará (Brasil), onde essas espécies são abundantes. Os espécimes foram coletados com rede de espera, e após a captura os estômagos foram removidos para a análise dos conteúdos. Dezoito medidas morfométricas foram aferidas de dez indivíduos adultos de cada espécie, posteriormente combinadas em quinze atributos ecomorfológicos. A distribuição das espécies evidenciou que A. longimanus foi restrita aos ambientes de rios, enquanto as demais foram exclusivamente capturadas nas baías. Todas as quatro espécies tiveram a dieta composta por insetos alóctones, mas A. longimanus também apresentou hábito frugívoro. Os mais importantes atributos ecomorfológicos foram relativos ...

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Diet and reproductive dynamics of Trachelyopterus lucenai (Siluriformes: Auchenipteridae) in subtropical coastal lagoons in southern Brazil

Cited by 14 publications

References 26 publications

Influence of the flood pulse on the reproduction of Tocantinsia piresi (Miranda Ribeiro) and Auchenipterus nuchalis (Spix & Agassiz) (Auchenipteridae) of the middle Xingu River, Brazil

Influence of the flood pulse on the reproduction of Tocantinsia piresi (Miranda Ribeiro) and Auchenipterus nuchalis (Spix & Agassiz) (Auchenipteridae) of the middle Xingu River, Brazil

Defining the reproductive period of freshwater fish species using the Gonadosomatic Index: a proposed protocol applied to ten species of the Patos Lagoon basin

Distribution, feeding and ecomorphology of four species of Auchenipteridae (Teleostei: Siluriformes) in Eastern Amazonia, Brazil

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