A5091544501- Fish Ecology and Management Studies
- Physiological and biochemical adaptations
- Marine and fisheries research
- Aquaculture Nutrition and Growth
- Hydrology and Sediment Transport Processes
- Reproductive biology and impacts on aquatic species
- Fish Biology and Ecology Studies
- Fish biology, ecology, and behavior
- Marine Bivalve and Aquaculture Studies
- Animal Behavior and Reproduction
- Ocean Acidification Effects and Responses
- Aquaculture disease management and microbiota
- Environmental Toxicology and Ecotoxicology
- Hydrology and Watershed Management Studies
- Ichthyology and Marine Biology
- Environmental DNA in Biodiversity Studies
- Marine animal studies overview
- Water Quality and Resources Studies
- Aquatic Invertebrate Ecology and Behavior
- Wildlife Ecology and Conservation
- Parasite Biology and Host Interactions
- Genetics, Aging, and Longevity in Model Organisms
- Species Distribution and Climate Change
- Pharmaceutical and Antibiotic Environmental Impacts
- Water Quality Monitoring Technologies
University of California, Davis
2016-2025
Delta Air Lines (United States)
2024
United States Bureau of Reclamation
2024
California Department of Fish and Wildlife
2013-2024
University of West Florida
2003-2014
Technical University of Munich
2013
University of British Columbia
2006-2011
University of California, Santa Barbara
2009-2010
Bamfield Marine Sciences Centre
2008
Populations of common killifish, Fundulus heteroclitus, are distributed along the Atlantic coast North America through a steep latitudinal thermal gradient. We examined intraspecific variation in whole-animal tolerance and its relationship to heat shock response killifish from northern southern extremes species range. Critical maxima were significantly higher than fish by approximately 1.5 degrees C at wide range acclimation temperatures (from 2-34 C), critical minima differed above 22 C,...
As global temperatures rise, there is a growing need to understand the physiological mechanisms that determine an organism's thermal niche. Here, we test hypothesis increases in mitochondrial capacity with cold acclimation and adaptation are associated decreases tolerance using two subspecies of killifish (Fundulus heteroclitus) differ We assessed whole-organism metabolic rate, amount function acclimated several temperatures. Mitochondrial enzyme activities mRNA levels were greater fish from...
ABSTRACT Climate change and associated increases in water temperatures may impact physiological performance ectotherms exacerbate endangered species declines. We used an integrative approach to assess the of elevated temperature on two fishes immediate conservation concern a large estuary system, threatened longfin smelt (Spirinchus thaleichthys) delta (Hypomesus transpacificus). Abundances have reached record lows California, USA, these populations are at imminent risk extirpation....
Coastal ecosystems are among the most human-impacted habitats globally, and their management is often critically linked to recovery of declining native species. In San Francisco Estuary, Delta Smelt (Hypomesus transpacificus) an endemic, endangered fish strongly tied Californian conservation planning. The complex life history combined with dynamic seasonal spatial abiotic conditions result in dissimilar environments experienced ontogenetic stages, which may yield stage-specific...
Abstract While sometimes difficult to admit, perspectives of European and white males have overwhelmingly dominated fisheries science management in the USA. This dynamic is exemplified by bias against “rough fish”—a pejorative ascribing low-to-zero value for countless native fishes. One product this that biologists ironically worked conservation diverse fishes over a century, these problems persist today. Nearly all U.S. states retain bag limits other policies are regressive encourage...
Declining body size in fishes and other aquatic ectotherms associated with anthropogenic climate warming has significant implications for future fisheries yields, stock assessments ecosystem stability. One proposed mechanism seeking to explain such body-size reductions, known as the gill oxygen limitation (GOL) hypothesis, recently been used model impacts of on but not robustly empirically tested. We brook trout (Salvelinus fontinalis), a fast-growing, cold-water salmonid species broad...
Abstract Juvenile Chinook Salmon (Oncorhynchus tshawytscha) populations have decreased substantially in the Sacramento-San Joaquin Delta (Delta) over past decades, so considerably that two of four genetically distinct runs are now listed Endangered Species Act. One factor responsible for this decline is presence contaminants Delta. Insecticides, used globally agricultural, industrial, and household settings, potential to contaminate nearby aquatic systems through spray drift, runoff, direct...
Ocean acidification, a reduction in ocean pH due to the uptake of anthropogenic carbon dioxide (CO 2 ) by surface waters, has recently emerged as research theme marine biology an expected deleterious effect altered seawater chemistry on calcification. Owing importance larval survival and dispersal for maintenance adult populations, early life history stages calcifying invertebrates have been central focus this research. Here, we present experimental system that unites culturing needs with...
Early life stages of salmonids are particularly vulnerable to warming and hypoxia, which common stressors in hyporheic, gravel bed, rearing habitat (i.e. a 'redd'). With the progression global climate change, high temperatures hypoxia may co-occur more frequently within redds, for salmonid species at their southern range limit. Warming have competing effects on energy supply demand, can be detrimental energy-limited early stages. We examined how elevated temperature as individual combined...
Thermal exposure is a serious and growing challenge facing fish species worldwide. Chinook salmon (Oncorhynchus tshawytscha) living in the southern portion of their native range are particularly likely to encounter warmer water due confluence factors. River alterations have increased likelihood that juveniles will be exposed warm temperatures during freshwater life stage, which can negatively impact survival, growth, development pose threat dwindling populations. To better understand how...
Coastal estuaries are among the most heavily impacted ecosystems worldwide with many keystone fauna critically endangered. The delta smelt (Hypomesus transpacificus) is an endangered pelagic fish species endemic to Sacramento–San Joaquin Estuary in northern California, and considered as indicator for ecosystem health. This characterized by tidal seasonal gradients water parameters (e.g., salinity, temperature, turbidity), but also subject altered water-flow regimes due extraction. In this...
Climate change is driving rapid changes in environmental conditions and affecting population species' persistence across spatial temporal scales. Integrating climate assessments into biological resource management, such as conserving endangered species, a substantial challenge, partly due to mismatch between global forecasts local or regional conservation planning. Here, we demonstrate how outputs of models can be downscaled the watershed scale, then coupled with ecophysiological metrics...
Transformation of earth's ecosystems by anthropogenic climate change is predicted for the 21st century. In many regions, associated increase in environmental temperatures and reduced precipitation will have direct effects on physiological performance terrestrial aquatic ectotherms already threatened fish biodiversity important fisheries. The threat elevated particularly salient members Oncorhynchus genus living California, which southern limit their range. Here, we report first assessments...
Abstract Environmental change and biodiversity loss are but two of the complex challenges facing conservation practitioners policy makers. Relevant robust scientific knowledge is critical for providing decision-makers with actionable evidence needed to inform decisions. In Anthropocene, science that leads meaningful improvements in conservation, restoration management desperately needed. Conservation Physiology has emerged as a discipline well-positioned identify mechanisms underpinning...
Atlantic stingrays, Dasyatis sabina, inhabit shallow bays subject to rapid temperature changes, yet little is known about their thermal tolerance strategies. We quantified critical maxima (CTMaxima) and minima (CTMinima) of stingrays from St. Joseph's Bay, Florida. Spiracle contraction cessation for more than one minute was the experimental endpoint. Laboratory-acclimated fish held at 10.8, 20.5, or 35.1 C exhibited CTMaxima 35.7, 39.3, 43.2 C, CTMinima 0.8, 4.8, 10.8 respectively....
Populations of the common killifish Fundulus heteroclitus are found along a latitudinal temperature gradient in habitats with high thermal variability. The objectives this study were to assess effects and population origin on swimming performance (assessed as critical speed, Ucrit). Acclimated fish from northern southern populations demonstrated wide zone (from 7° 33°C) over which Ucrit showed little change temperature, declining significantly only at lower temperatures. Although we observed...
Abstract Forecasting species' responses to climate change requires understanding the underlying mechanisms governing environmental stress tolerance, including acclimation capacity and acute responses. Current knowledge of these physiological processes in aquatic ectotherms is largely drawn from eurythermal or extreme stenothermal species. Yet many species conservation concern exhibit tolerance windows capacities between extremes. We linked transcriptome profiles organismal a mesothermal...
Abstract As global change alters multiple environmental conditions, predicting species’ responses can be challenging without understanding how each factor influences organismal performance. Approaches quantifying mechanistic relationships greatly complement correlative field data, strengthening our abilities to forecast impacts. Substantial salinity increases are projected in the San Francisco Estuary, California, due anthropogenic water diversion and climatic changes, where critically...