Distribuição, abundância relativa e movimentos sazonais de bagres marinhos (Siluriformes, Ariidae) no estuário da Lagoa dos Patos (RS), Brasil

Araújo, Francisco Gerson

doi:10.1590/s0101-81751988000400002

Cited by 48 publications

(61 citation statements)

References 5 publications

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“…In general, water quality was considered to be good (Haase et al 2003). The fishing pressure on marine catfish of this region has been high (Araújo 1988;Reis 1986a;Reis 1986b;Macahdo et al 2012). Over the years, the lack of management of estuarine fish stocks increased the catch rate of the Ariidae family, which caused a decline in the abundance of the main species (Araújo 1988;Reis 1986a;Reis 1986b).…”

Section: Resultsmentioning

confidence: 99%

“…The fishing pressure on marine catfish of this region has been high (Araújo 1988;Reis 1986a;Reis 1986b;Macahdo et al 2012). Over the years, the lack of management of estuarine fish stocks increased the catch rate of the Ariidae family, which caused a decline in the abundance of the main species (Araújo 1988;Reis 1986a;Reis 1986b). This overfishing could have lead to a reduction of the effective population size, favoring the inbreeding and the expression of the gene for albinism (Sanabria et al 2010).…”

Section: Resultsmentioning

confidence: 99%

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First record of partial albinism in two catfish species of Genidens (Siluriformes: Ariidae) in an estuary of Southern Brazil

Leal

Schulz

Albornoz

et al. 2013

Braz. arch. biol. technol.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

First record of partial albinism in two catfish species of Genidens (Siluriformes: Ariidae) in an estuary of Southern Brazil

Leal

Schulz

Albornoz

et al. 2013

Braz. arch. biol. technol.

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“…G. genidens apresentou uma ampla distribuição na zona interna, enquanto S. luniscutis ocorreu em elevadas abundâncias, tanto na zona interna quanto na zona externa da Baía. Araújo (1988) reportou que N. barba permanece no estuário da Lagoa dos Patos durante os dois primeiros anos de vida, juntando-se aos adultos posteriormente e migrando para o mar. Tal padrão não foi verificado no presente caso, provavelmente, devido a menor ocorrência dessa espécie na região Sudeste.…”

Section: Discussionunclassified

“…Padrões sazonais de ocorrência para bagres marinhos em regiões estuarinas foram reportados por vários autores como relevante no ciclo de vida desses peixes (Reis, 1982;Araújo, 1988;Mishima & Tanji, 1981;Yañez-Aracibia et al, 1976). Segundo Lara-Dominguez et al (1981), a sazonalidade dos bagres marinhos parece ser controlada por fatores abióticos, principalmente temperatura e salinidade.…”

Section: Discussionunclassified

“…Os peixes denominados bagres marinhos pertencem à família Ariidae e ocorrem nas zonas litorâneas tropicais e subtropicais, em ambientes marinhos, estuarinos e de água doce, sendo geralmente abundantes em águas costeiras com fundo lodoso e pouco profundas (Araújo, 1988;Andreata et al, 1989). Procuram a embocadura dos rios e regiões lagunares na época da desova (Figueiredo & Menezes, 1978;Moyle & Cech-Jr, 1988).…”

Section: Introductionunclassified

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Variação espacial e temporal de bagres marinhos (Siluriformes, Ariidae) na Baía de Sepetiba, Rio de Janeiro

et al. 1999

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Spacial and temporal variation of marines catfishes on Sepetiba Bay, RJ.Marine catfishes (Ariidae) are abundant fishery resource in the Sepetiba Bay, Rio de Janeiro State (Lat. 22º54'-23º04'S; Long. 43º34'-44º10'W), that is considered an important rearing area to a great number of juvenile fish. Artisanal fisheries are important economic activity in the region. Spatial and seasonal distribution and relative abundance of marine catfish, based on the number and weight of fish catched per sample (Catch per Unit Effort = CPUE) were assessed based on 151 otter trawl sampling in seven sampling sites in the Sepetiba Bay, between July 1993 and June 1996. For spatial comparisons, the study area was devised in an inner zone, located in the inner Bay and an outer zone, near to the sea limit. Environmental parameters of surface and bottom water temperature and salinity, transparency and depth were recorded at each sampling. A spatial variation pattern, assessed by multivariate methods, is shown with higher depths and transparencies in the outer bay and lower in the inner bay, while salinity seems to decrease slightly toward the inner bay. Only temperature showed seasonal variation. Five marine catfish species were recorded in the following order of decreasing numerical abundance: Genidens genidens (Valenciennes, 1839), Cathorops spixii (Agassiz, 1829) Sciadeichthys luniscutis (Valenciennes, 1840), Netuma barba (Lacepéde, 1803) and Bagre marinus (Mitchill, 1814).The top four abundant marine catfish occur in higher abundance in the inner Bay, with indication of spatial separation within this area. G. genidens was abundant over all sampling sites in the inner Bay, while C. spixii showed a narrower distribution in this area. N. barba concentrated near to Guandú River estuary, and S. luniscutis showed an ample distribution over all the Bay. Seasonally was not marked for all species. Strategies of spatial separation may be explaining the coexistence of marine catfish in high abundance in the Sepetiba Bay, which is used as fish rearing area mainly due the low depths and transparencies, favorable conditions to their early life cycle development.

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Influences of the reproductive cycle on condition of marine catfishes (Siluriformes, Ariidae) in a coastal area at southeastern Brazil

Gomes

Araújo

2004

Environmental Biology of Fishes

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SynopsisMarine catfishes use estuaries and bays as part of their life cycle for spawning and feeding purposes, respectively. We compared three species of the family Ariidae in two different environmental conditions: a relatively stable bay site and an estuarine site, which differ in their magnitudes of environmental fluctuation to investigate effects of spawning on condition. We found differences in the parameter b (slope) and in the y-intercept (a) among species and sexes. The parameter a varied inversely with b, and thus is not a good indicator to express fish condition. Condition factor did not differ between the two sites for species and sexes when we consider the pooled data. Overall condition was associated with reproductive process, and was high before the reproductive season, decreasing during the spawning period in the estuary, then increasing when fish move to the bay (April-August). Temporal segregation in the reproductive period and small-scale movements between the estuary and the bay are the probable mechanisms to optimize the use of the area by the three species.

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Distribuição, abundância relativa e movimentos sazonais de bagres marinhos (Siluriformes, Ariidae) no estuário da Lagoa dos Patos (RS), Brasil

Abstract: ABSTRACT

Cited by 48 publications

References 5 publications

First record of partial albinism in two catfish species of Genidens (Siluriformes: Ariidae) in an estuary of Southern Brazil

First record of partial albinism in two catfish species of Genidens (Siluriformes: Ariidae) in an estuary of Southern Brazil

Variação espacial e temporal de bagres marinhos (Siluriformes, Ariidae) na Baía de Sepetiba, Rio de Janeiro

Influences of the reproductive cycle on condition of marine catfishes (Siluriformes, Ariidae) in a coastal area at southeastern Brazil

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