Structure and genetic variability of golden mussel (Limnoperna fortunei) populations from Brazilian reservoirs. Issue 5 (10th February 2019)

• Record Type: Journal Article
• Authors: Furlan‐Murari, Pâmela Juliana; Ruas, Claudete de Fatima; Ruas, Eduardo Augusto; Benício, Lucas Milanez; Urrea‐Rojas, Angela Maria; Poveda‐Parra, Angela Rocio; Murari, Emerson; Lima, Ed Christian Suzuki de; Souza, Felipe Pinheiro de; Lopera‐Barrero, Nelson Mauricio
• Is Part Of: Ecology and evolution. Volume 9:Issue 5(2019)
• Page Start: 2706
• Page End: 2714
• Publication Date: 2019-02-10
• Subjects: bioinvader -- bivalve -- environmental conservation -- genetic analysis -- microsatellite markers; Ecology -- Periodicals; Evolution -- Periodicals; 577.05
• DOI: 10.1002/ece3.4941
• Languages: English
• ISSNs: 2045-7758

Abstract

Abstract: 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. Abstract : Possible dispersal aided by anthropic factors in the upstream direction. Occurrence of gene flow and lack of genetic structure.