A5005142948- Fish Ecology and Management Studies
- Genetic diversity and population structure
- Genetic and phenotypic traits in livestock
- Environmental DNA in Biodiversity Studies
- Animal Genetics and Reproduction
- Aquatic Invertebrate Ecology and Behavior
- Mosquito-borne diseases and control
- Genetics and Physical Performance
- Fish Biology and Ecology Studies
- HIV Research and Treatment
- Hepatitis B Virus Studies
- Fixed Point Theorems Analysis
- Aquaculture Nutrition and Growth
- HIV/AIDS drug development and treatment
- Cytomegalovirus and herpesvirus research
- Diverse Educational Innovations Studies
- Conservation, Ecology, Wildlife Education
- Plant and animal studies
- Genetics and Plant Breeding
- Nutrition, Genetics, and Disease
- Marine Bivalve and Aquaculture Studies
- Hepatitis C virus research
- Genomics and Phylogenetic Studies
- Animal and Plant Science Education
- Water Quality Monitoring Technologies
NOAA National Marine Fisheries Service
2020-2025
NOAA National Marine Fisheries Service Alaska Fisheries Science Center
2020-2025
National Oceanic and Atmospheric Administration
2020-2024
University of Maryland, Baltimore County
2021-2024
University of Washington
2014-2021
University of Maryland, Baltimore
2020
Abstract Large genomic studies are becoming increasingly common with advances in sequencing technology, and our ability to understand how variation influences phenotypic between individuals has never been greater. The exploration of such relationships first requires the identification associations molecular markers phenotypes. Here, we explore use Random Forest ( RF ), a powerful machine‐learning algorithm, discern loci underlying both discrete quantitative traits, particularly when studying...
Fish hatcheries are widely used to enhance fisheries and supplement declining wild populations. However, substantial evidence suggests that hatchery fish subject differential selection pressures compared their counterparts. Domestication selection, or adaptation the environment, poses a risk populations if traits specific success in environment have genetic component there is subsequent introgression between fish. Few studies investigated domestication on genomic level, even fewer done so...
Abstract Comparisons between the genomes of salmon species reveal that they underwent extensive chromosomal rearrangements following whole genome duplication occurred in their lineage 58−63 million years ago. Extant salmonids are diploid, but occasional pairing homeologous chromosomes exists males. The consequences re-diploidization can be characterized by mapping position duplicated loci such species. Linkage maps also a valuable tool for genome-wide applications as association studies,...
Understanding the genetic basis of repeated evolution same phenotype across taxa is a fundamental aim in evolutionary biology and has applications conservation management. However, extent to which interspecific life-history trait polymorphisms share pathways remains underexplored. Here, we address this gap by studying key trait, age at maturity, four species Pacific salmonids (genus Oncorhynchus) that exhibit intra- variation trait-Chinook Salmon, Coho Sockeye Steelhead Trout. We tested for...
Hatcheries are vital to many salmon fisheries, with inherent risks and rewards. While hatcheries can increase the returns of adult fish, demographic evolutionary consequences for natural populations interacting hatchery fish on spawning grounds remain unclear. This study examined impacts stray hatchery-origin pink population productivity resilience. We explored temporal assortative mating dynamics using a quantitative genetic model that assumed only difference between hatchery-...
Captive breeding has the potential to rebuild depressed populations. However, associated genetic changes may decrease restoration success and negatively affect adaptive of entire population. Thus, approaches that minimize risks should be tested in a comparative framework over multiple generations. Genetic diversity two captive-reared lines species conservation interest, Chinook salmon (Oncorhynchus tshawytscha), was surveyed across three generations using genome-wide approaches. divergence...
Abstract A novel application of genomewide association analyses is to use trait‐associated loci monitor the effects conservation strategies on potentially adaptive genetic variation. Comparisons fitness between captive‐ and wild‐origin individuals, for example, do not reveal how captive rearing affects variation underlying traits or which are most susceptible domestication selection. Here, we used data collected across four generations identify associated with six in adult Chinook salmon (...
Interbreeding between hatchery-reared and wild salmon raises concerns that hatchery fish may increase the frequency of maladapted alleles in populations, yet divergence populations their original sources remains poorly understood. We explored phenotypic reproductive traits source pink (Oncorhynchus gorbuscha) coho (O. kisutch) Southeast Alaska, hypothesizing relaxed selection would result males with smaller snouts humps females larger gonadosomatic indices (GSI) smaller, less nutrient-dense...
In this paper we obtain several random fixed point theorems including a stochastic generalization of the classical Rothe theorem. The results herein improve recent result Bharucha-Reid and Mukherjea also some similar Itoh.
Abstract Genomic approaches permit direct estimation of inbreeding and its effect on fitness. We used genomic‐based estimates to investigate their relationship with eight adult traits in a captive‐reared Pacific salmonid that is released into the wild. Estimates were also determine whether alternative broodstock management reduced risks inbreeding. Specifically, 1,100 unlinked restriction‐site associated (RAD) loci compare pairwise relatedness, derived from matrix, individual inbreeding,...
Population enhancement through the release of cultured organisms can be an important tool for marine restoration. However, there has been considerable debate about whether releases effectively contribute to conservation and harvest objectives, impact fitness wild populations. Pacific salmonid hatcheries on West Coast North America represent one largest programs in world. Molecular-based pedigree studies or two generations have contributed our understanding hatchery-reared individuals...
Abstract Understanding the genetic basis of repeated evolution same phenotype across taxa is a fundamental aim in evolutionary biology and has applications to conservation management. However, extent which interspecific life-history trait polymorphisms share pathways remains under-explored. We address this gap by studying key trait, age at maturity, four species Pacific salmon (genus Oncorhynchus ) that exhibit intra- variation – Chinook Salmon, Coho Sockeye Steelhead Trout. tested for...
Knowledge of the reproductive biology fishes is essential for effective fisheries management. Information derived from an understanding fish reproduction, such as size and age at maturity, used in models to assess stocks can affect estimates important ecological processes recruitment, abundance, trophic interactions. Common practices determining status teleost include macroscopic evaluation gonads well histological analysis. However, be biased analysis time-consuming, resulting limitations...
is a partially migratory salmonid species, and many populations (known as steelhead) have declined in recent decades the western United States Canada. Closely related resident rainbow trout) may be an effective resource recovery of these declining populations. However, extent to which different trout produce individuals how likely are return adults spawn remains unknown. One limitation answering questions identification loci that accurately segregate between To address this limitation, we...
The marine ecology of Pacific salmon (Oncorhynchus spp.) during winter has been rarely studied compared to other seasons, largely because harsh environmental conditions in the North Ocean make conducting research surveys difficult.As a result, we do not fully understand fitness (e.g., energy density, lipid content, protein content) different age classes for each species or how may be affected by conditions, such as recent heatwaves (Cavole et al. 2016;Chen 2021).We also know extent which...
Research Article| December 01 1979 Observing the Zebra Finch Charles Waters Search for other works by this author on: This Site PubMed Google Scholar The American Biology Teacher (1979) 41 (9): 520–525. https://doi.org/10.2307/4446746 Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Facebook Twitter LinkedIn MailTo Tools Get Permissions Cite Citation Waters; Finch. 1 1979; doi: Download citation file: Ris (Zotero) Reference Manager EasyBib...