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5 results for “Limnoperna fortunei”
Effects of the Invasive Freshwater Mussel Limnoperna fortunei on Sediment Properties and Accumulation Rates
<p>Environmental data and results of an experiment conducted in the vicinity of the Río de la Plata Estuary (Argentina), aimed at assessing the influence of the invasive mussel <em>Limnoperna fortunei</em> on sediment properties and accumulation rates. In the experiment, eighteen 20 L flow-through experimental units with and without mussels were used monitoring where changes in the mass and characteristics of the sediments accumulated throughout a yearly cycle in monthly, biannual and annual intervals.</p>
FIGURA 1 in Prospecção Do Molusco Invasor Limnoperna Fortunei (Dunker, 1857) Nos Principais Corpos Hídricos Do Estado Do Paraná, Brasil
FIGURA 1: Mapa de ocorrência de Limnoperna fortunei (mexilhão dourado) nos pontos amostrais dos principais rios do Paraná. Em preto: presença não detectada. Em vermelho: detectada por pelo menos um dos métodos.
Data from: Structure and genetic variability of golden mussel (Limnoperna fortunei) populations from Brazilian reservoirs
The golden mussel, Limnoperna fortunei a highly invasive species in Brazil, has generated productive, economical, and biological impacts. To evaluate genetic structure and variability of L. fortunei populations present in fish farms in the reservoirs of Canoas I (CANFF), Rosana (ROSFF), and Capivara (CAPFF) (Paranapanema river, Paraná, Brazil), eight microsatellite loci were amplified. Five of those eight loci resulted in 38 alleles. The observed heterozygosity (Ho) was lower than the expected heterozygosity (He) in all populations, with a deviation from the Hardy-Weinberg equilibrium (HWE). The average value for the inbreeding coefficient (Fis) was positive and significative for all populations. There was higher genetic variability within populations than among them. The fixation index (Fst) showed a small genetic variability among these populations. The occurrence of gene flow was identified in all populations, along with the lack of a recent bottleneck effect. The clustering analysis yielded K = 2, with genetic similarity between the three populations. The results demonstrate low genetic structure and suggest a founding population with greater genetic variability (ROSFF). Our data point to the possible dispersal of L. fortunei aided by anthropic factors in the upstream direction. It was concluded that the three populations presented a unique genetic pool for Paranapanema river, with occurrence of gene flow.
Evaluating the role of predatory fish controlling the invasion of the Asian golden mussel (Limnoperna fortunei) in a subtropical river
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Data from: Structure and genetic variability of golden mussel (Limnoperna fortunei) populations from Brazilian reservoirs
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