A5026850311- Ichthyology and Marine Biology
- Marine and fisheries research
- Fish Ecology and Management Studies
- Fish biology, ecology, and behavior
- Marine animal studies overview
- Physiological and biochemical adaptations
- Aquaculture Nutrition and Growth
- Fish Biology and Ecology Studies
- Coral and Marine Ecosystems Studies
- Marine Biology and Ecology Research
- Paleontology and Evolutionary Biology
- Reproductive biology and impacts on aquatic species
- Cephalopods and Marine Biology
- Marine Bivalve and Aquaculture Studies
- Genetic diversity and population structure
- Evolution and Paleontology Studies
- Environmental and Biological Research in Conflict Zones
- Identification and Quantification in Food
- Polar Research and Ecology
- Neurobiology and Insect Physiology Research
- Ecology and biodiversity studies
- Animal Behavior and Reproduction
- Aquaculture disease management and microbiota
- Ocean Acidification Effects and Responses
- Uterine Myomas and Treatments
Ohio University
2014-2024
Western University of Health Sciences
1988-2012
Brown University
1978
University of Oklahoma Medical Center
1971
Indianapolis Zoo
1889
The Southern Ocean around Antarctica is among the most rapidly warming regions on Earth, but has experienced episodic climate change during past 40 million years. It remains unclear how ancient periods of have shaped Antarctic biodiversity. origin antifreeze glycoproteins (AFGPs) in notothenioid fishes become a classic example evolution key innovation response to can drive adaptive radiation. By using time-calibrated molecular phylogeny notothenioids and reconstructed paleoclimate, we...
composition in Crocodylus porosus caught along a salinity gradient. J. Comp. Physiol. 144:261-270. , L. E. TAPLIN, P. HARLOW AND WRIGHT. 1980. Survival and growth of hatchling saltwater without access to fresh drinking water. Oecologia 47:264-266. JOHNSON, I. M. 1969. Salt water balance, nitrogen excretion the red-tailed hawk, Buteojamaicensis. Unpubl. PhD thesis Zoology, Univ. Montana.
Distance, currents, deep water and sub‐zero temperatures isolate the waters of Antarctic continental shelf from other areas in Southern Hemisphere. The is an insular evolutionary site for a variety marine organisms. fish fauna relatively small unusual composition, consisting 213 species with higher taxonomic diversity restricted to 18 families. Ninety‐six perciform notothenioids comprise 45% fauna. However many shelf, including highest latitudes, make up 77% 90–95% abundance biomass....
Abstract Investigations in recent years of the ecological structure and processes Southern Ocean have almost exclusively taken a bottom-up, forcing-by-physical-processes approach relating various species' population trends to climate change. Just 20 ago, however, researchers focused on broader set hypotheses, part formed around paradigm positing interspecific interactions as central structuring ecosystem (forcing by biotic processes, top-down), particularly “krill surplus” caused removal...
The endemic Antarctic teleosts of the suborder Notothenioidei are bottom dwellers. They lack swim bladders, heavier than seawater, and feed on or near bottom. midwaters surrounding continent productive underutilized by fishes. There is an evolutionary trend toward pelagism in some notothenioids. We discovered that largest fish, Dissostichus mawsoni, was neutrally buoyant. Attainment neutral buoyancy associated with specializations skeletal, integumentary, muscular, digestive systems....
Abstract Among the endemic notothenioid fish of Antarctica, Antarctic silverfish ( Pleuragramma antarcticum ) is only species in which all developmental stages live throughout water column. It widely distributed shelf waters around continent, inhabiting both open and areas pack ice at depths from 0 to 900 m. In successfully occupying this habitat, it evolved a suite specific biological, ecological physiological adaptations environmental conditions cold highly seasonal waters. Specialization...
Antarctic notothenioids are an impressive adaptive radiation. While they share recent common ancestry with several species-depauperate lineages that exhibit a relictual distribution in areas peripheral to the Southern Ocean, understanding of their evolutionary origins and biogeographic history is limited as sister lineage remains unidentified. The phylogenetic placement among major perciform fishes, which include sculpins, rockfishes, sticklebacks, eelpouts, scorpionfishes, perches, groupers...
Abstract We provide our perspective on the species-level taxonomy of notothenioid fishes, dominant component fish fauna Antarctica. There are 140 species in 45 genera, an increase 15% since previous summary 2000. Biogeographically, 30 non-Antarctic, 33 sub-Antarctic and 77 Antarctic. The checklist is documented with footnotes that rationale for decisions. Supplementary Material provides additional details decisions two Pogonophryne .
Antarctica is a continental island and the waters of its shelf upper slope are an insular evolutionary site. The resemble closed basin in Southern Ocean, separated from other continents by distance, current patterns subzero temperatures. benthic fish fauna Antarctic Region includes 213 species with higher taxonomic diversity confined to 18 families. Ninety-six notothenioids, 67 liparids 23 zoarcids comprise 45%, 32% 11% fauna, combined total 88%. In high latitude (71–78°S) areas...
Abstract Perciform fishes of the suborder Notothenioidei are dominant in Ross Sea and Southern Ocean general. They have evolved physiological adaptations which ensure their survival ice-laden seawater at a temperature -1.9°C extended habitat range. Among these relatively high metabolic rates made possible by enzymes efficient catalyzing energyproducing reactions subzero temperatures; restricted range tolerance; slow growth spite rates; antifreeze glycoproteins reduce freezing point body...
Notothenioid fishes, a perciform group, radiated in the cold shelf waters around Antarctic continent and 110 species dominate fish diversity, abundance, biomass at levels of ≈77%, 92%, 91%, respectively. This occurred locality with frequent glaciomarine cycles that fragmented obliterated habitats, disrupted ecosystems, made parts high latitude shelves periodically uninhabitable. The notothenioid radiation encompasses three stages 10 axes: for habitat stage, divergence (1) depth (2) biotope,...
The RV Nathaniel B. Palmer was used for bottom trawling at depths of 100–1200 m during two recent cruises in the south-western Ross Sea. Although only 10 20 trawls were completely successful, a diverse collection 979 specimens obtained representing 47 species (36 notothenioids and 11 nonnotothenioids) eight families. included four new species, colour morph known rare species. also established locality records, three second occurrences, most southerly records eleven depth fish Good taxonomic...