Estrutura da população e aspectos reprodutivos do peixe-rei Atherinella brasiliensis (Quoy &amp; Gaimard) (Atheriniformes, Atherinopsidae) em áreas rasas do complexo estuarino de Paranaguá, Paraná, Brasil

Fávaro, Luís Fernando; Oliveira, Elton Celton de; Verani, Nelsy Fenerich

doi:10.1590/s0101-81752007000400036

Cited by 17 publications

(16 citation statements)

References 5 publications

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“…Three characteristics of A. brasiliensis were identified as factors important to its success in estuarine areas: salinity tolerance (Souza-Bastos, Freire, 2011), slow rates of growing with positive alometric coeficients and short-lived life cycle (Contente et al, 2011;Carvalho et al, 2017). Furthermore, in accordance with the findings of other authors, the Brazilian silverside showed higher abundance in habitats less affected by the hydrodynamic process, such as extensive sand (Pessanha, Araujo, 2001) and mud flats (Campos et al, 2015), and also in sites which provide more availability of habitats, as such tidal creeks and mangroves (Neves et al, 2006;Fávaro et al, 2007). As a consequence, these sheltered habitats can be used as refuges from predation and/or contribute significantly to high food resource.…”

Section: Discussionsupporting

confidence: 71%

Intraspecific food resource partitioning in Brazilian silverside Atherinella brasiliensis (Atheriniformes: Atherinopsidae) in a tropical estuary, Brazil

et al. 2019

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We investigated the intraspecific partitioning of food resources of the Brazilian silverside Atherinella brasiliensis in a tropical estuary. A total of 1,099 stomachs were analyzed, and the diet consisted mainly of Gastropoda, Ceratopogonidae larvae, Decapoda larvae, Calanoida, Cyclopoida, Hymenoptera and Brachyura. Ordination of the mean volumetric percentage contribution of preys indicated differences in the dietary compositions between sites and size classes. By SIMPER analysis, we detected high dissimilarity between size classes, suggesting ontogenetic niche shifts: the diet of the early juveniles was based in zooplankton, whereas adults consumed mainly benthic macroinvertebrates. These shifts were related to changes in feeding structures and foraging abilities that show a strong relationship with body size, and showed functional trade-offs in swimming capacity, and feeding strategies used to capture prey. Differences in the diet between size classes and habitat selection by Brazilian silverside are likely strategies to avoid intraspecific competition, clearly related to the abundance and accessibility of resources along the estuarine habitats.Nós investigamos a partição intraespecífica de recursos alimentares do peixe-rei Atherinella brasiliensis em um estuário tropical. Um total de 1.099 estômagos foi analisado, e a dieta foi constituída principalmente de Gastropoda, Larva de Ceratopogonidae, Larva de Decapoda, Calanoida, Cyclopoida, Hymenoptera e Brachyura. A análise de ordenação da contribuição do volume das presas indicou diferenças na composição da dieta entre locais e classes de tamanho. Pela análise do SIMPER, nós detectamos alta dissimilaridade entre as classes de tamanho, sugerindo mudanças ontogenéticas: a dieta dos indivíduos menores foi baseada em zooplâncton, enquanto os maiores indivíduos consumiram principalmente macroinvertebrados bentônicos. Essas variações foram relacionadas com mudanças nas estruturas para captura do alimento e na habilidade de forrageamento que evidenciaram uma forte relação com o tamanho do corpo, e mostraram trade-offs funcionais na capacidade de natação e no modo de captura das presas. Diferenças na dieta entre as classes e a seleção de habitat pelo peixe-rei são estratégias para evitar a competição intraespecífica, claramente relacionada com a abundância e a acessibilidade dos recursos alimentares ao longo dos habitats estuarinos. Palavras-chave:Áreas costeiras, Estratégia Trófica, Heterogeneidade de habitat.

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Section: Discussionsupporting

confidence: 71%

Intraspecific food resource partitioning in Brazilian silverside Atherinella brasiliensis (Atheriniformes: Atherinopsidae) in a tropical estuary, Brazil

et al. 2019

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“…This assumption is corroborated by the studies of CHAVES (1994, CHAVES & VENDEL (1997, ROCHA et al (2002), SCHULTZ et al (2002), FÁVARO et al (2003FÁVARO et al ( , 2005FÁVARO et al ( , 2007, who reported that the spring is the period of greatest reproductive activity for the estuarine-resident species in the shores of Paraná (subtropical region). However, different results have been reported for estuarine species in the Brazilian tropical region (BARBIERI et al 1991, GOMES et al 1999and PESSANHA & ARAUJO 2001.…”

mentioning

confidence: 67%

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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“…Atherinella brasiliensis is common in estuarine areas, but also occurs in coastal waters (HostimSilva et al 1995, Pessanha and Araújo 2001, Neves et al 2006, Fávaro et al 2007). The species has generalist and opportunist feeding habits (Chaves andVendel 2008, Contente et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Growth of the silverside Atherinella brasiliensis in a subtropical estuary with some insights concerning the weight-length relationship

Carvalho

Barradas

Fontoura

et al. 2017

An. Acad. Bras. Ciênc.

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Estrutura da população e aspectos reprodutivos do peixe-rei Atherinella brasiliensis (Quoy & Gaimard) (Atheriniformes, Atherinopsidae) em áreas rasas do complexo estuarino de Paranaguá, Paraná, Brasil

Cited by 17 publications

References 5 publications

Intraspecific food resource partitioning in Brazilian silverside Atherinella brasiliensis (Atheriniformes: Atherinopsidae) in a tropical estuary, Brazil

Intraspecific food resource partitioning in Brazilian silverside Atherinella brasiliensis (Atheriniformes: Atherinopsidae) in a tropical estuary, Brazil

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

Growth of the silverside Atherinella brasiliensis in a subtropical estuary with some insights concerning the weight-length relationship

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