Close genetic similarity among populations of the white croaker (Micropogonias furnieri) in the south and south-eastern Brazilian coast. I. Allozyme studies

Levy, J.A.; Maggioni, Rodrigo; Conceição, Moisés Basílio da

doi:10.1016/s0165-7836(98)00166-0

Cited by 19 publications

(18 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Low levels of mtDNA divergence between southeast and southern localities (0.011%), although not statistically significant, were more consistent with a pattern of semi-isolation by distance rather than marked subdivision by the oceanographic patterns of the subtropical convergence system. MtDNA results supported the hypothesis of contemporary gene flow among south-central Brazilian coast and were in agreement with previous allozyme data reported by Levy et al (1998), suggesting that migration rate among white mouth croaker populations was high enough to maintain the homogeneity in gene frequencies and therefore, avoided differentiation by genetic drift. The lack of genetic heterogeneity found within M. furnieri in both mtDNA and nuclear gene frequencies was supported by several aspects of the physical environment and white mouth croaker life history, which should facilitate dispersal and minimize geographic subdivision within the south-central Brazil.…”

Section: Resultssupporting

confidence: 91%

“…Genetic studies of M. furnieri using starch-gel electrophoresis of allozymes did not support the multiple-stock hypothesis and confirmed the existence of a single population unit along the southwestern Atlantic coast. Maggioni et al (1994) and Levy et al (1998) found a high degree of genetic homogeneity in allele frequencies and also high levels of gene flow among white mouth croaker sampled from regions between 23° S and 40° S. Recent studies have shown that restriction fragment length polymorphism analysis (RFLP) of mtDNA is more powerful than protein electrophoresis for differentiating populations within several economically important fish species (Avise, 1994). MtDNA is a haploid, circular, and non-recombinant molecule that evolves rapidly and provides character states whose phylogenetic relationships can be deduced (Wilson et al, 1985).…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Genetic structure of Brazilian populations of white mouth croaker Micropogonias furnieri (Perciformes : Sciaenidae)

Puchnick‐Legat¹,

Levy

2006

Braz. arch. biol. technol.

View full text Add to dashboard Cite

Mitochondrial (mt) DNA population structure was examined by using restriction fragment length polymorphism analysis (RFLP) among 149 white mouth croakers (Micropogonias furnieri) sampled from six locations in the Brazilian coast. Heterogeneity tests revealed no differentiation in mtDNA haplotype frequencies within the region between 23°S and 34°S (P=0.263), but significant heterogeneity was detected between north and south of 23°S (P<0.003). Analysis of molecular variance (AMOVA) indicated a low

show abstract

Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 96%

Genetic structure of Brazilian populations of white mouth croaker Micropogonias furnieri (Perciformes : Sciaenidae)

Puchnick‐Legat¹,

Levy

2006

Braz. arch. biol. technol.

View full text Add to dashboard Cite

show abstract

“…Phenotypic characteristics do not provide direct evidence of genetic isolation between stocks; however, these can indicate the prolonged separation of postlarval fish in different environmental regimes . Genetic variation between stocks can provide a direct basis for stock structure, but can prove inadequate in situations where even low levels of larval or adult mixing occur (Begg and Waldman, 1999), and high levels of gene flow between stocks are found (Levy et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic

Volpedo¹,

Cirelli²

2006

Sci. Mar.

View full text Add to dashboard Cite

SUMMARY: Striped weakfish (Cynoscion guatucupa) and whitemouth croaker (Micropogonias furnieri) are important commercial and recreational species found in abundance along the South American Atlantic coast. In recent years otolith chemical composition has been used as a tool for identifying fish stocks for several species. The chemical composition of C. guatucupa and M. furnieri otoliths was determined by inductively coupled plasma-optical emission spectrometry (ICP-OES) in samples from coastal sites (Partido de La Costa, Mar del Plata and San Blás Bay). Significant differences in the ratios of Mg/Ca, Mn/Ca and Sr/Ca for C. guatucupa otoliths and Cd/Ca, Cu/Ca, Mg/Ca, Sr/Ca and Zn/Ca for M. furnieri otoliths suggest the existence of two different fish stocks, one originating in the north (including Samborombón Bay and Partido de La Costa fisheries) and another originating in the south (including "El Rincón" and San Blás fisheries). These results agree with previous studies on the same species using different methodologies. These stocks may be separated by an oceanographic barrier, the "Frente El Rincón". Otolith chemical composition has not been previously used in South America for identifying fish stocks and may be a simple, quick and useful tool for the sustainable exploitation and management of commercial species. -La pescadilla de red (Cynoscion guatucupa) y la corvina rubia (Micropogonias furnieri) son especies de importancia comercial y recracional abundantes a lo largo de la costa atlántica sudamericana. En recientes años, la composición química del otolito es utilizada como una herramienta para la identificación de stocks pesqueros. La composición química de los otolitos de C. guatucupa y M. furnieri se determino por espectrómetro de emisión atómica (ICP-OES) en muestras provenientes de localidades costeras (Partido de La Costa, Mar del Plata y Bahía San Blás). Se hallaron diferencias significativas en las relaciones Mg/Ca, Mn/Ca y Sr/Ca para C. guatucupa y en Cd/Ca, Cu/Ca, Mg/Ca, Sr/Ca y Zn/Ca para M. furnieri, lo que sugiere la existencia de dos diferentes stocks pesqueros, uno originado en el norte (que incluye las pesquerías de Bahía Samborombón y del Partido de La Costa) y otro stock, originado en el sur (que incluye las pesquerías de "El Rincón" y Bahía Blás). Estos resultados coinciden con los hallados en estudios previos utilizando diferentes metodologías. Estos stocks pueden estar separados por un barrera oceanografía el "Frente El Rincón". La composición química del otolito se utilizo por primera vez en Sudamerica para la identificación de stocks pesqueros, siendo un método fácil, rápido y una herramienta útil para el manejo y explotación sustentable de especies comerciales. KeywordsPalabras clave: composición química de los otolitos, discriminación de stocks, Cynoscion guatucupa, Micropogonias furnieri.

show abstract

“…Early biochemical analysis of total crystalline lens (Vazzoler & Phan, 1989) did not find differences between samples from SEB and SB. Levy et al (1998) compared 17 enzymes and one protein encoding loci by starch and polyacrylamide gel electrophoresis in samples from the same specimens utilized in this study and found high degree of genetic homogeneity in the allele frequencies and a high level of gene flow along the study area. Puchnik-Legat & Levy (2006) analysed mitochondrial DNA of specimens from northern to southern Brazil and found significant differences between these regions but not between SB and SEB.…”

Section: Stock Identificationmentioning

confidence: 82%

“…Data to investigate the stock structure of Micropogonias furnieri along southern and southeastern Brazil were collected along a bottom trawl survey in coastal waters at depth under 50 m between latitudes 34° and 22°30'S in December 1989 and February 1990 in which tissue samples for transferrin electrophoresis (Levy et al, 1998), as well as morphological and meristic data and otolith for ageing were collected (Fig. 2).…”

Section: Methodsmentioning

confidence: 99%

Stocks and management units of Micropogonias furnieri (Desmarest, 1823) in southwestern Atlantic

Haimovici¹,

Cardoso²,

Unpierre³

2016

lajar

View full text Add to dashboard Cite

ABSTRACT. The whitemouth croaker Micropogonias furnieri is a demersal coastal and estuarine sciaenid fish intensely exploited by small and large scale fisheries in Brazil, Uruguay and Argentina between 22° and 40°S. To study the stocks structure of the whitemouth croaker along southeastern (SEB) and southern Brazil (SB) between 22°28' and 33°53'S, morphometric, meristic and growth data were collected during a bottom trawl survey. Consistent differences between different latitudes were not observed neither for the univariate comparisons of the number of gill rakers and dorsal and pectoral fin rays nor for five morphometric measurements. A principal component analysis of the five morphometric measures did not show a geographical grouping pattern. However, the age structure and growth differed significantly between south and north of Cape Santa Marta Grande (29•S). Former references and this study support the existence of two independent stocks of whitemouth croaker in southeastern and southern Brazil and diverse published studies indicate some degree of mixture between fishes spawning along southern Brazil, Uruguay and Argentina. In terms of access of the fleets there are three jurisdictions: along SB and SEB, where only Brazilian boats fish, in the common fishery zone of Uruguay and Argentina where both countries fish and south of 39ºS, where only Argentinian boats can fish but where the whitemouth croaker is not an important target. Efficient management requires the identification of management units based in stocks structure, life history, distribution of the fisheries and jurisdictions. When all these factors are taken into account, excluding local coastal small scale fisheries management, three geographical management units were identified in the shared waters of Argentinian and Uruguayan waters, southern Brazil and southeastern Brazil. Keywords: whitemouth croaker, stock identification, populations, geographic variation, morphometry, growth, Brazil.Stocks y unidades de manejo de la corvina Micropogonias furnieri (Desmarest, 1823) en el Atlántico sudoccidental RESUMEN. La corvina Micropogonias furnieri es un pez demersal costero y estuarino de la familia Sciaenidae abundante e intensamente explotado por flotas costeras e industriales entre el sureste de Brasil (22°S) y el norte de Argentina (40°S). Para el estudio de la estructura de los stocks de la corvina blanca a lo largo del sureste y sur de Brasil, se obtuvieron datos morfométricos, merísticos y de crecimiento a lo largo de la costa sur (SB) y sudeste (SEB) de Brasil entre las latitudes 22º28'S y 33º53'S. No se encontraron diferencias significativas entre las diferentes latitudes de pesca en el número de radios branquiales, rayos de las aletas dorsal y pectoral, ni para las cinco medidas morfométricas. El análisis de componentes principales de las cinco mediciones morfométricas no mostró un patrón de agrupación geográfica. Sin embargo, la estructura de edad y crecimiento difirió significativamente entre el sur y norte del Cabo Santa Marta Grande (29°S)....

show abstract

Close genetic similarity among populations of the white croaker (Micropogonias furnieri) in the south and south-eastern Brazilian coast. I. Allozyme studies

Cited by 19 publications

References 30 publications

Genetic structure of Brazilian populations of white mouth croaker Micropogonias furnieri (Perciformes : Sciaenidae)

Genetic structure of Brazilian populations of white mouth croaker Micropogonias furnieri (Perciformes : Sciaenidae)

Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic

Stocks and management units of Micropogonias furnieri (Desmarest, 1823) in southwestern Atlantic

Contact Info

Product

Resources

About