Article
Agriculture, Dairy & Animal Science
Valentino Palombo, Elena De Zio, Giovanna Salvatore, Stefano Esposito, Nicolaia Iaffaldano, Mariasilvia D'Andrea
Summary: The study assessed the fine-scale genetic structure of Mediterranean trout in two main rivers in Molise region, Italy, using the Affymetrix 57K rainbow-trout-derived SNP array. Results showed that the SNP array can successfully be used for Mediterranean trout genotyping, revealing a fine-scale genetic structure in the populations to support conservation and management actions, including selection of candidate sites for collecting adults and eradication of alien trout.
Article
Biochemistry & Molecular Biology
Zhongqi Chen, Shawn R. Narum
Summary: The study used low coverage whole-genome resequencing to identify genome regions involved in thermal adaptation in wild redband trout. Selective sweeps among populations and association tests for specific phenotypes under thermal stress were conducted, with a particular focus on the cerk gene on chromosome 4 as a potential candidate gene for local thermal adaptation. Further validation is needed to determine the functional role of cerk in influencing thermal performance.
Article
Biodiversity Conservation
Ensieh Habibi, Michael R. Miller, Daphne Gille, Leigh Sanders, Jeff Rodzen, Grace M. Aurniger, Molly Stephens, Amanda J. Finger
Summary: The study provides insights into the population structure and hybridization of the McCloud River Redband Trout. It identifies multiple historical lineages of MRRT and highlights the importance of core conservation populations. Furthermore, it discovers SNP markers for monitoring hybridization and genetic diversity.
CONSERVATION GENETICS
(2022)
Review
Biology
Gianluca Polgar, Mattia Iaia, Tommaso Righi, Pietro Volta
Summary: Trout fishing is a popular recreational activity, but the introduction of non-native trouts has had detrimental effects on ecosystems. In northern Italy, conflicts arise between scientists, institutions, and fishing associations over the conservation of native trout populations. The article recommends stopping the stocking of non-native trouts and suggests future research directions for sustainable fishery resource management in northern Italy.
Article
Biodiversity Conservation
Sasa Maric, David Stankovic, Simona Susnik Bajec, Jasna Vukic, Radek Sanda, Tihomir Stefanov, Dragan Nikolic, Ales Snoj
Summary: This article presents a case study on brown trout populations in the Vlasina Plateau in Southeast Serbia. The study reveals a complex genetic structure and the impact of genetic admixture from the Aegean populations on the Danubian populations. Furthermore, it demonstrates that the biological invasion followed a stepping-stone scenario and provides evidence of increased stocking in the wider region.
BIOLOGICAL INVASIONS
(2022)
Article
Water Resources
Caleb Akoji Odiji, Olaide Monsor Aderoju, Joseph Bisong Eta, Idris Shehu, Adama Mai-Bukar, Hilda Onuoha
Summary: The study evaluated and prioritized the morphometric characteristics of the upper Benue River watershed, identifying specific drainage patterns and high-priority sub-watersheds for mitigation of flood and erosion risks. This information can be utilized by decision-makers for sustainable watershed management and planning.
APPLIED WATER SCIENCE
(2021)
Article
Water Resources
Caleb Odiji, Matthew Adepoju, Idris Ibrahim, Oluwatola Adedeji, Ihenacho Nnaemeka, Olaide Aderoju
Summary: The study identified suitable sites for small hydropower dams in the upper Benue river watershed in Nigeria through the use of Geographic Information System and Analytical Hierarchy Process, and validated the developed method using field data, demonstrating a strong correlation and good prospects for dam site selection.
APPLIED WATER SCIENCE
(2021)
Article
Environmental Sciences
Tommaso Righi, Emanuele Fasola, Mattia Iaia, Fabrizio Stefani, Pietro Volta
Summary: Fish stocking is a common practice in freshwater management worldwide, but few studies have assessed the real impacts of stocking on wild fish populations. The marble trout in Northern Italy is an endangered species and has been negatively affected by restocking. Despite some hybridization, pure native stocks of marble trout still exist, but their future persistence is uncertain. Natural recruitment is found to be the main source of population sustainment, and there are important adaptive differences between wild and domestic trout.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Fisheries
Boone M. La Hood, Tyler C. Thomsen, Allison W. Lenaerts, Madeline G. Tomczak, Emily A. Szott, Zebadiah Woiak, Kyle M. Von Ruden, Katherine D. Bockrath, Kevin S. Irons, James T. Lamer
Summary: The study confirms that bigheaded carp reproduce upstream of LD19 and are capable of transitioning to more advanced larval stages beyond this bottleneck.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2023)
Article
Environmental Sciences
Dawit Samuel Teshome, Megersa Kebede Leta, Habitamu Taddese, Alene Moshe, Terefe Tolessa, Gebiaw T. Ayele, Songcai You
Summary: This study assesses the hydrological responses of land cover changes in the Muger watershed from 1986 to 2020. The key findings are that changes in cultivation land, forest land, and settlement have significant impacts on the hydrological processes. The study outcome can assist decision-makers and planners in preparing adaptable strategies under changing land cover conditions within a watershed.
Article
Ecology
Emma K. T. Carroll, Steven M. Vamosi
Summary: The study reveals that the population and distribution of Bull Trout in their native range are declining due to historic overharvest, invasive non-native species, and habitat loss. While there is evidence of genetic differentiation, significant isolation-by-distance patterns were not observed in the Athabasca River basin.
ECOLOGY AND EVOLUTION
(2021)
Article
Evolutionary Biology
Jan W. Arntzen, Robert Jehle, Ben Wielstra
Summary: The study of deeply diverged yet hybridizing salamander species revealed a skewed sex ratio in the hybrid generation, with gene flow predominantly towards one species and detrimental effects of introgressive hybridization. Factors such as Bateson-Dobzhansky-Muller incompatibilities, ecological segregation, cytonuclear incompatibilities all contribute to maintaining species integrity despite incomplete isolation during secondary contact.
EVOLUTIONARY APPLICATIONS
(2021)
Article
Biodiversity Conservation
Yalan Xiong, Yiran Li, Shiyao Xiong, Guohui Wu, Ouping Deng
Summary: This study used a framework combining Discrete Wavelet Transform and Geographically Weighted Regression to explore the impact of terrain on vegetation coverage in a small watershed of the Upper Minjiang River. The results showed that elevation and aspect index were positively correlated with vegetation index, while slope was negatively correlated.
ECOLOGICAL INDICATORS
(2021)
Article
Biochemistry & Molecular Biology
T. C. Bougie, A. Brelsford, M. Hedin
Summary: Through phylogenomic and clustering methods using RADseq, UCEs, and morphological data, this study revealed the impact of introgressive hybridization on genomes and morphology within a species complex of jumping spiders. Geographic region was a better predictor of phylogenetic relatedness and genomic similarity among species than species or morph identity. Rapid radiation and frequent introgression have homogenized the genomes of species in this system, while selective pressures maintain distinct male morphologies.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2021)
Article
Environmental Sciences
F. S. Pacheco, J. P. H. B. Ometto, L. Gomes, K. Tosto, M. Miranda, S. Loverde-Oliveira, D. D. Pessi, C. Cox
Summary: The study found that phosphorus balance in cropping systems in the Vermelho River watershed in Upper Pantanal, Brazil, is positive, while in grazing systems it tends to be negative. The positive balance in cropping systems is mainly due to high phosphorus inputs from mineral fertilizers and high soil phosphorus sorbing capacities, while the negative balance in grazing systems is a result of nutrient removal without replenishment.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)