Alimentação natural de Etropus crossotus Jordan &amp; Gilbert (Teleostei, Pleuronectiformes, Paralichthyidae), na Armação do Itapocoroy, Penha, Santa Catarina, Brasil

Lunardon-Branco, Maria José; Branco, Joaquim Olinto

doi:10.1590/s0101-81752003000400012

Cited by 9 publications

(6 citation statements)

References 17 publications

(11 reference statements)

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“…Species from this trophic category explore the bottom or the periphyton, ingesting a great quantity of sediment associated with unicellular algae and micro organisms and organic matter in fine particles (AGOSTINHO et al 1997). Mechanisms employed by fish for its diet, represent adaptations, which make them able to use a specific kind of prey (LUNARDON-BRANCO & BRANCO 2003). As an adaptation to the iliophagous habit, the digestive tract of C. lepidura presents a mechanic stomach similar to gizzard and long-coiled intestine for a better utilisation of food and does not present teeth in the maxillary (AGOSTINHO et al 1997, GOMES & VERANI 2003.…”

Section: Discussionmentioning

confidence: 99%

Reproductive biology and feeding of Curimatella lepidura (Eigenmann & Eigenmann) (Pisces, Curimatidae) in Juramento reservoir, Minas Gerais, Brazil

et al. 2006

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Reproductive biology and feeding of Curimatella lepidura (Eigenmann & Eigenmann, 1889) were studied in Juramento reservoir, São Francisco River basin, Southeastern Brazil. Histological analyses and gonadosomatic indexes revealed females and males in reproductive activity from October to March and total spawning occurring from January to March coupled with the peak of spermiating males. In the dry season, the fishes accumulated energetic reserves for reproduction during a short rainy season. The species presented sexual dimorphism, being females larger than males and sexual maturation occurring close to 7.7 cm standard length for females and 7.1 cm for males. C. lepidura presented iliophagous feeding habit, ingesting mainly sediment/detritus and a small amount of acari, algae, Tricoptera insects and Ostracoda crustaceans, suggesting a probable role in nutrient recycling of the Juramento reservoir.

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Section: Discussionmentioning

confidence: 99%

Reproductive biology and feeding of Curimatella lepidura (Eigenmann & Eigenmann) (Pisces, Curimatidae) in Juramento reservoir, Minas Gerais, Brazil

et al. 2006

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“…Although studies on the reproductive biology (CHAVES & VENDEL 1997, DIAS et al 2005, feeding ecology (LUNARDON-BRANCO & BRANCO 2003, GUEDES et al 2004, GUEDES & ARAUJO 2008 and population composition (MENDONÇA & ARAUJO 2002) have been conducted on some species of Brazilian coastal flatfish, little is known about the autoecological parameters of most species occurring in the country.…”

mentioning

confidence: 99%

Reproduction of the flatfish Achirus lineatus (Pleuronectiformes: Achiridae) in Paranaguá Bay, state of Paraná, a subtropical region of Brazil

Oliveira¹,

Fávaro²

2010

Zoologia (Curitiba, Impr.)

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ABSTRACT. The present study characterizes the oogenesis and the ovarian maturation scale, and determines the reproductive period, type of spawning, recruitment period, and population variations in the reproductive process of the flatfish Achirus lineatus (Linnaeus, 1758). Specimens were sampled on a monthly basis in the shallow near shore area of the Paranaguá Bay, state of Paraná, Brazil, from March 2006 to February 2007. The specimens collected were measured for morphometric data (total length and total weight) and their gonads were exposed for macroscopic evaluation. The gonads were subsequently removed, weighed and processed for microscopic analyses. Six phases of the ovarian follicle development were defined, as well as five ovarian development stages. Growth patterns differed between the sexes: negative allometry for females and positive allometry for males. Based on the seasonal assessments of the distribution of individual GSI values, the distribution of stages of gonadal development, individual body size, sex ratio, the ratio of juveniles to adults, and histological examination of the ovaries, reproduction was found to occur in the spring (spawning in batches), and recruitment in the autumn. These results show that A. lineatus is an estuarine-resident species that uses the study area for reproduction and recruitment, providing an argument in favor of the need to conserve the estuarine environment in order to preserve stocks. KEY WORDS. Oogenesis; maturity scale; reproductive period; type of spawning; sex ratio.

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“…However, species classified as resident-estuarine may make use of marine areas at certain times of the year to forage, if they can tolerate the marine characteristics. This was observed by Lunardon-Branco & Branco (2003), who studies the diet of E. crossotus in marine areas adjacent to an estuarine area on the coast of Santa Catarina State (subtropical region of Brazil).…”

Section: Discussionmentioning

confidence: 61%

“…Some species of Brazilian coastal flatfishes have added to the knowledge about reproductive biology (Chaves & Vendel, 1997;Dias et al, 2005;Oliveira & Fávaro, 2010), food ecology (Chaves & Serenato, 1998;Lunardon-Branco & Branco, 2003;Guedes et al, 2004;Guedes & Araujo, 2008) and population composition. Even so, little is known about the autoecological parameters of most of the species that occur in Brazil.…”

Section: Introductionmentioning

confidence: 99%

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Reproductive biology of the flatfish Etropus crossotus (Pleuronectiformes: Paralichthyidae) in the Paranaguá Estuarine Complex, Paraná State, subtropical region of Brazil

Oliveira

Fávaro

2011

Neotrop. ichthyol.

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The present work studied the reproduction of the flatfish Etropus crossotus in the Paranaguá Estuarine Complex, Paraná State, subtropical region of Brazil. Monthly collections of biological material occurred from October 2008 to October 2009, at seven sampling sites, through ten-minute otter trawl surveys in the shallow infralittoral areas of the estuary. Temperature, water salinity, photoperiod, and rainfall data were also recorded. Ovarian histology was used to: 1 -describe ovarian development microscopically, 2 -make the quantitative analyses of both sexes more precise. The maturation curve, the frequency of gonadal maturation states and the condition factor verified that the reproductive period occurred from October to January. The frequency of young and adult individuals established that the recruitment period occurred in January and February. There were no significant differences in the sex ratio during the study period. The studied species completes its entire life cycle in an estuary and its reproduction is well-synchronized with the temporal variations implicit in subtropical regions.O presente trabalho estudou a reprodução do linguado Etropus crossotus no complexo estuarino de Paranaguá, região subtropical do Brasil. Coletas mensais de material biológico ocorreram de outubro de 2008 a outubro de 2009, em sete pontos amostrais, através da realização de dez minutos de arrasto de porta no infralitoral raso do estuário. Ainda, foram obtidos dados de temperatura e salinidade da água, fotoperíodo e pluviosidade para caracterização do ambiente. A histologia de ovário foi utilizada para: 1-descrever microscopicamente o desenvolvimento ovariano, 2-conferir precisão aos resultados das análises quantitativas de ambos os sexos. Através da curva de maturação, da frequência de estádios de maturação gonadal e do fator de condição verificou-se que o período reprodutivo ocorreu de outubro a janeiro. A partir da frequência de indivíduos jovens e adultos constatou-se que o período de recrutamento ocorreu em janeiro e fevereiro. Não se obteve diferenças significativas na proporção sexual ao longo do período estudado. A espécie estudada completa todo o seu ciclo de vida em estuários e sua reprodução mostrou-se bem sincronizado às variações temporais implícitas em regiões subtropicais.

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Alimentação natural de Etropus crossotus Jordan & Gilbert (Teleostei, Pleuronectiformes, Paralichthyidae), na Armação do Itapocoroy, Penha, Santa Catarina, Brasil

Cited by 9 publications

References 17 publications

Reproductive biology and feeding of Curimatella lepidura (Eigenmann & Eigenmann) (Pisces, Curimatidae) in Juramento reservoir, Minas Gerais, Brazil

Reproductive biology and feeding of Curimatella lepidura (Eigenmann & Eigenmann) (Pisces, Curimatidae) in Juramento reservoir, Minas Gerais, Brazil

Reproduction of the flatfish Achirus lineatus (Pleuronectiformes: Achiridae) in Paranaguá Bay, state of Paraná, a subtropical region of Brazil

Reproductive biology of the flatfish Etropus crossotus (Pleuronectiformes: Paralichthyidae) in the Paranaguá Estuarine Complex, Paraná State, subtropical region of Brazil

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