Journal of Great Lakes Research, Journal Year: 2021, Volume and Issue: 47(5), P. 1446 - 1452
Published: June 18, 2021
Language: Английский
Evolutionary Applications, Journal Year: 2021, Volume and Issue: 14(10), P. 2342 - 2360
Published: March 13, 2021
Human impact is noticeable around the globe, indicating that a new era might have begun: Anthropocene. Continuing human activities, including land-use changes, introduction of non-native species and rapid climate change, are altering distributions countless species, often giving rise to human-mediated hybridization events. While interbreeding different populations or can detrimental effects, such as genetic extinction, it be beneficial in terms adaptive introgression an increase diversity. In this paper, I first review mechanisms outcomes anthropogenic based on literature from last five years (2016-2020). The most common leading previously isolated taxa include habitat change (51% studies) (34% intentional 19% unintentional). These human-induced events result (80%). high incidence exchange between hybridizing indicates application genic view speciation (and introgression) provide crucial insights how address This perspective considers genome dynamic collection loci with distinct evolutionary histories, heterogenous genomic landscape differentiation introgression. First, understanding lead better selection diagnostic markers characterize hybrid populations. Second, describing patterns vary across help predict likelihood negative processes, demographic swamping, well positive outcomes, It especially important not only quantify much material introgressed, but also what has been exchanged. Third, comparing pre-Anthropocene current cases novel into swamping collapse during event. However, comparative approach remains tested before applied practice. Finally, combined conservation studies determine legal status hybrids take appropriate measures manage interplay genomics will constant ideas these fields which improve our knowledge origin conserve protect them.
Language: Английский
Citations
94
Hydrobiologia, Journal Year: 2022, Volume and Issue: 850(10-11), P. 2425 - 2445
Published: Sept. 22, 2022
Language: Английский
Citations
41
Genomics, Journal Year: 2024, Volume and Issue: 116(1), P. 110781 - 110781
Published: Jan. 1, 2024
Nile tilapia is one of the most important aquaculture species globally, providing high-quality animal protein for human nutrition and a source income to sustain livelihoods many people in low- middle-income countries. This native Africa nowadays farmed throughout world. However, genetic makeup its populations remains poorly characterized. Additionally, there has been introgression movement (as well as wild) strains connected Africa, yet relationship between wild unknown continent. Genetic characterization potential support conservation supporting selective breeding improve indigenous sustainable profitable production. In current study, total 382 fish were used investigate structure, diversity, ancestry within Ugandan from three major lakes including Lake Albert (L. Albert), Kyoga Kyoga) Victoria Victoria), 10 hatchery farms located catchment regions these lakes. Our results showed clear structure sourced lakes, with L. showing higher similarity. We also observed noticeable among populations, them being genetically similar fish. Admixture (2.55–52.75%) contribution / stocks Uganda's than stock (2.12–28.02%). relatively high diversity across both but some had sizable numbers highly inbred fish, raising concerns about management practices. addition, we identified genomic region on chromosome 5, harbouring key innate immune gene BPI growth GHRH, putatively under selection population. overlaps previously be associated rate tilapia.
Language: Английский
Citations
15
Frontiers in Aquaculture, Journal Year: 2024, Volume and Issue: 3
Published: Feb. 22, 2024
Broodstock nutrition is the most essential constituent of sustainable aquaculture production. Its impact on reproductive performance and profitability commercial has been subject considerable research. The present paper reviews literature available subject, examining implication Nile tilapia broodstock parameters including maturation, fecundity, fertilization, embryo development, larval quality, survival rate. provision a nutritive diet composed macro- micronutrients proteins, lipids, carbohydrates, vitamins, minerals, functional additives, such as prebiotics, enzymes, hormones, probiotics, in different proportions discussed. Special emphasis given to dealing with effects dietary protein lipid vitellogenesis ovarian egg hatching rate, fry number. feeding regime described.
Language: Английский
Citations
11
Animals, Journal Year: 2025, Volume and Issue: 15(2), P. 142 - 142
Published: Jan. 9, 2025
Nile tilapia (Oreochromis niloticus) aquaculture continues to significantly contribute the growth of sector in Uganda. However, its production is beset by erratic and unreliable seed supply. Also, most hatcheries practice inbreeding broodstock, resulting inferior characterized low rates. As such, a selective breeding program necessary readily avail fast-growing that respond farmers' needs. The present review consolidates available information on developing article discusses significance genetic improvement, drawing lessons from successful programs other countries. From literature review, no systematic was traceable Scanty efforts species available, with little evidence selection for improved performance. Overall, national capacity research development, including fish strain weak poorly funded. recommends purposive support improvement program, which will be source broodstock farmers, respectively. would guide formulation standard operating procedures quality towards ensuring sustainable
Language: Английский
Citations
1
Journal of Great Lakes Research, Journal Year: 2025, Volume and Issue: unknown, P. 102535 - 102535
Published: Feb. 1, 2025
Language: Английский
Citations
1
Journal of Great Lakes Research, Journal Year: 2023, Volume and Issue: 49(6), P. 102211 - 102211
Published: July 6, 2023
Over 42 million people rely on Lake Victoria as their primary source of food, employment, and clean drinking water. The lake's fisheries have produced around one tonnes in recent years, but the growing population has resulted a lower catch rate per capita. And lake its catchment been negatively impacted by wide variety human activities, such overfishing, oil spills, discharge untreated waste, spread invasive species, over-abstraction water from basin, climate change, among other drivers change. This paper presents existing research gaps, capacity, way forward for priority issues ranging fish fisheries, biodiversity, pollution, aquaculture, growth socio-economics, land use changes, habitat degradation, change skills knowledge. purpose this is to document: information that currently available previous research; scientific capacity; resources required guarantee becomes heathy biologically diverse resource millions who are dependent it. It clear synthesis biological, social, economic benefits can be derived only accomplished through utilization multi-disciplinary approaches monitoring both basin-wide lake-wide biophysical processes, well modeling all potential interactions between ecology basin lake.
Language: Английский
Citations
20
Fishes, Journal Year: 2023, Volume and Issue: 8(4), P. 217 - 217
Published: April 20, 2023
Despite the global contribution of aquaculture as an important pillar for food and nutritional security, its rapid growth has been hampered by inadequate poor-quality seed due to inbreeding, hybridization related stocks, broodstock. Phenotypic genotypic characterization Nile tilapia in natural water bodies Uganda studied but research gaps remain on morphometric farmed O. niloticus Uganda, which hinders selective breeding initiatives. This study characterized from various farmers Uganda’s Southwestern Highland Agro-Ecological Zone using their traits. In this study, 8 traits were taken each 258 fish samples collected with at least 30 sampled pond system zone. The data generated analyzed multivariate analysis. order delineate populations different ponds, Discriminant Function analysis (DFA) was performed dataset distribution plots test purity strains. There significant differences among Victoria population having highest standard length while Kyoga had weight. Morphometric grouped into three clusters, indicative that farms zone possibly sources seed. condition factor, is a measure wellbeing fish, showed all displayed isometric growing it results provide evidence local display body shape result sources. aspect can be applied programs after establishing genetic structure stock.
Language: Английский
Citations
11
Conservation Genetics, Journal Year: 2023, Volume and Issue: 25(2), P. 305 - 318
Published: Sept. 27, 2023
Abstract Despite their high abundance and species richness, tilapiines have been compromised by various factors especially overfishing, climate change, uncontrolled fish transfers introductions. Fish introductions negatively impacted native tilapiine populations through competition, predation, hybridization, introgression compromising genetic integrity. The hybridization levels of different in the Lake Victoria basin remain relatively understudied. study utilized nuclear microsatellite mitochondrial DNA (mtDNA) markers to investigate signals compare diversity Victoria, Kenya, using next-generation sequencing. Low from Oreochromis niloticus into other were detected Bayesian clustering analysis principal coordinate (PCoA). results contribute need for conservation measures these species.
Language: Английский
Citations
11
Fisheries and aquatic sciences, Journal Year: 2025, Volume and Issue: 28(1), P. 42 - 53
Published: Jan. 1, 2025
Language: Английский
Citations
0