The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Marta Bolgan - One of the best experts on this subject based on the ideXlab platform.
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Air movement sound production by alewife, white sucker, and four salmonid fishes suggests the phenomenon is widespread among freshwater fishes
PloS one, 2018Co-Authors: Rodney A. Rountree, Francis Juanes, Marta BolganAbstract:We sought to describe sounds of some of the common fishes suspected of producing unidentified air movement sounds in soundscape surveys of freshwater habitats in the New England region of North America. Soniferous behavior of target fishes was monitored in real time in the field in both natural and semi-natural environments by coupling Passive Acoustic Monitoring (PAM) with direct visual observation from shore and underwater video recording. Sounds produced by five species including, alewife (Alosa pseudoharengus, Clupeidae), white sucker (Catastomus commersonii, Catostomidae), brook trout (Salvelinus fontinalis, Salmonidae), brown trout (Salmo trutta, Salmonidae), and rainbow trout (Oncorhynchus mykiss, Salmonidae) were validated and described in detail for the first time. In addition, field recordings of sounds produced by an unidentified salmonid were provisionally attributed to Atlantic salmon (Salmo salar, Salmonidae). Sounds produced by all species are of the air movement type and appear to be species specific. Our data based on fishes in three distinct orders suggest the phenomenon may be more ecologically important than previously thought. Even if entirely incidental, air movement sounds appear to be uniquely identifiable to species and, hence, hold promise for PAM applications in freshwater and marine habitats.
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Does the Arctic charr Salvelinus alpinus produce sounds in a captive setting
Journal of fish biology, 2016Co-Authors: Marta Bolgan, Rodney A. Rountree, Joanne O'brien, Martin P. GammellAbstract:Arctic charr Salvelinus alpinus did not appear to invest in acoustic communication during courtship and agonistic interactions in captivity. Salvelinus alpinus did, however, produce four different types of sounds which were found to be associated with three different types of air exchange behaviours which probably have a swimbladder regulation function. Since air passage sounds appear to be common among Salmonidae, it is suggested that the potential of passive acoustics techniques for behavioural and ecological monitoring should be further investigated in future field and laboratory investigations.
N Abad - One of the best experts on this subject based on the ideXlab platform.
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comparison of age structured and length converted catch curves of brown trout salmo trutta in two french rivers
Fisheries Research, 1995Co-Authors: Daniel Pauly, J. Moreau, N AbadAbstract:Abstract Age-structured catch curves (ACC) and two different types of length-converted catch curves (LCC), covering the same size/age range of trout Salmo trutta (Pisces: Salmonidae) in two French rivers, were used to estimate total mortality ( Z ). It is shown that standard LCC overestimate Z when ACC are used as controls, while LCC explicitly considering seasonal growth oscillations produce unbiased estimates. The implications of this finding for length-based fish stock assessment are discussed.
Steven Weiss - One of the best experts on this subject based on the ideXlab platform.
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Inferring phylogenetic structure, hybridization and divergence times within Salmoninae (Teleostei: Salmonidae) using RAD-sequencing
Molecular phylogenetics and evolution, 2018Co-Authors: Laurene Alicia Lecaudey, Ulrich K. Schliewen, A. G. Osinov, Eric B. Taylor, Louis Bernatchez, Steven WeissAbstract:Abstract Phylogenetic studies focusing on Salmonidae have revealed significant obstacles in trying to clarify some interspecific relationships within the Salmoninae subfamily, due to a limited number of markers typed, conflicting phylogenetic signals and ancient hybridization events. To infer reliable phylogenetic relationships, evaluate several putative scenarios of ancient hybridization, and estimate divergence times within Salmoninae, we applied restriction-site associated DNA sequencing (RAD-seq) to 43 samples, including 26 genetic lineages across 21 species, largely representing the subfamily, with an emphasis on the genus Salvelinus. We identified 28,402 loci and 28,363 putatively unlinked SNPs, which were used in downstream analyses. Using an iterative k-means partitioned dataset and a Maximum Likelihood approach; we generated a well-supported phylogeny, providing clear answers to several previous phylogenetic uncertainties. We detected several significant introgression signals, presumably ancient, in the genus Salvelinus. The most recent common ancestor of Salmonidae dates back to approximately 58.9 MY ago (50.8–64 MY) and the crown age of Salmoninae was estimated to be 37.7 MY (35.2–40.8 MY) using a Bayesian molecular dating analysis with a relaxed molecular clock. The divergence among genera of the subfamily occurred between the late Eocene and middle of the Miocene (≈38–11 MY) such as the divergence between the genus Oncorhynchus and Salvelinus, which we estimated to 21.2 MY ago (95% HPD: 19.8–23.0 MY), while species diversification took place mainly during the Neogene (≈22–1.5 MY), with more than half of these events occurring in the last 10 MY.
Louis Bernatchez - One of the best experts on this subject based on the ideXlab platform.
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Inferring phylogenetic structure, hybridization and divergence times within Salmoninae (Teleostei: Salmonidae) using RAD-sequencing
Molecular phylogenetics and evolution, 2018Co-Authors: Laurene Alicia Lecaudey, Ulrich K. Schliewen, A. G. Osinov, Eric B. Taylor, Louis Bernatchez, Steven WeissAbstract:Abstract Phylogenetic studies focusing on Salmonidae have revealed significant obstacles in trying to clarify some interspecific relationships within the Salmoninae subfamily, due to a limited number of markers typed, conflicting phylogenetic signals and ancient hybridization events. To infer reliable phylogenetic relationships, evaluate several putative scenarios of ancient hybridization, and estimate divergence times within Salmoninae, we applied restriction-site associated DNA sequencing (RAD-seq) to 43 samples, including 26 genetic lineages across 21 species, largely representing the subfamily, with an emphasis on the genus Salvelinus. We identified 28,402 loci and 28,363 putatively unlinked SNPs, which were used in downstream analyses. Using an iterative k-means partitioned dataset and a Maximum Likelihood approach; we generated a well-supported phylogeny, providing clear answers to several previous phylogenetic uncertainties. We detected several significant introgression signals, presumably ancient, in the genus Salvelinus. The most recent common ancestor of Salmonidae dates back to approximately 58.9 MY ago (50.8–64 MY) and the crown age of Salmoninae was estimated to be 37.7 MY (35.2–40.8 MY) using a Bayesian molecular dating analysis with a relaxed molecular clock. The divergence among genera of the subfamily occurred between the late Eocene and middle of the Miocene (≈38–11 MY) such as the divergence between the genus Oncorhynchus and Salvelinus, which we estimated to 21.2 MY ago (95% HPD: 19.8–23.0 MY), while species diversification took place mainly during the Neogene (≈22–1.5 MY), with more than half of these events occurring in the last 10 MY.
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Framing the Salmonidae Family Phylogenetic Portrait: A More Complete Picture from Increased Taxon Sampling
PloS one, 2012Co-Authors: Alexis Crête-lafrenière, Laura K. Weir, Louis BernatchezAbstract:Considerable research efforts have focused on elucidating the systematic relationships among salmonid fishes; an understanding of these patterns of relatedness will inform conservation- and fisheries-related issues, as well as provide a framework for investigating evolutionary mechanisms in the group. However, uncertainties persist in current Salmonidae phylogenies due to biological and methodological factors, and a comprehensive phylogeny including most representatives of the family could provide insight into the causes of these difficulties. Here we increase taxon sampling by including nearly all described salmonid species (n = 63) to present a time-calibrated and more complete portrait of Salmonidae using a combination of molecular markers and analytical techniques. This strategy improved resolution by increasing the signal-to-noise ratio and helped discriminate methodological and systematic errors from sources of difficulty associated with biological processes. Our results highlight novel aspects of salmonid evolution. First, we call into question the widely-accepted evolutionary relationships among sub-families and suggest that Thymallinae, rather than Coregoninae, is the sister group to the remainder of Salmonidae. Second, we find that some groups in Salmonidae are older than previously thought and that the mitochondrial rate of molecular divergence varies markedly among genes and clades. We estimate the age of the family to be 59.1 MY (CI: 63.2-58.1 MY) old, which likely corresponds to the timing of whole genome duplication in salmonids. The average, albeit highly variable, mitochondrial rate of molecular divergence was estimated as ∼0.31%/MY (CI: 0.27–0.36%/MY). Finally, we suggest that some species require taxonomic revision, including two monotypic genera, Stenodus and Salvethymus. In addition, we resolve some relationships that have been notoriously difficult to discern and present a clearer picture of the evolution of the group. Our findings represent an important contribution to the systematics of Salmonidae, and provide a useful tool for addressing questions related to fundamental and applied evolutionary issues.
Rodney A. Rountree - One of the best experts on this subject based on the ideXlab platform.
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Air movement sound production by alewife, white sucker, and four salmonid fishes suggests the phenomenon is widespread among freshwater fishes
PloS one, 2018Co-Authors: Rodney A. Rountree, Francis Juanes, Marta BolganAbstract:We sought to describe sounds of some of the common fishes suspected of producing unidentified air movement sounds in soundscape surveys of freshwater habitats in the New England region of North America. Soniferous behavior of target fishes was monitored in real time in the field in both natural and semi-natural environments by coupling Passive Acoustic Monitoring (PAM) with direct visual observation from shore and underwater video recording. Sounds produced by five species including, alewife (Alosa pseudoharengus, Clupeidae), white sucker (Catastomus commersonii, Catostomidae), brook trout (Salvelinus fontinalis, Salmonidae), brown trout (Salmo trutta, Salmonidae), and rainbow trout (Oncorhynchus mykiss, Salmonidae) were validated and described in detail for the first time. In addition, field recordings of sounds produced by an unidentified salmonid were provisionally attributed to Atlantic salmon (Salmo salar, Salmonidae). Sounds produced by all species are of the air movement type and appear to be species specific. Our data based on fishes in three distinct orders suggest the phenomenon may be more ecologically important than previously thought. Even if entirely incidental, air movement sounds appear to be uniquely identifiable to species and, hence, hold promise for PAM applications in freshwater and marine habitats.
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Does the Arctic charr Salvelinus alpinus produce sounds in a captive setting
Journal of fish biology, 2016Co-Authors: Marta Bolgan, Rodney A. Rountree, Joanne O'brien, Martin P. GammellAbstract:Arctic charr Salvelinus alpinus did not appear to invest in acoustic communication during courtship and agonistic interactions in captivity. Salvelinus alpinus did, however, produce four different types of sounds which were found to be associated with three different types of air exchange behaviours which probably have a swimbladder regulation function. Since air passage sounds appear to be common among Salmonidae, it is suggested that the potential of passive acoustics techniques for behavioural and ecological monitoring should be further investigated in future field and laboratory investigations.
