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Comparative and Evolutionary Physiology Commons

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All Articles in Comparative and Evolutionary Physiology

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Physiological Ecology Of Four Endemic Alabama Species And The Exotic Asiatic Weatherfish, Misgurnus Anguillicaudatus (Cantor, 1842), Lindsay M. White, Mark E. Meade, Benjamin A. Staton 2017 Auburn University

Physiological Ecology Of Four Endemic Alabama Species And The Exotic Asiatic Weatherfish, Misgurnus Anguillicaudatus (Cantor, 1842), Lindsay M. White, Mark E. Meade, Benjamin A. Staton

Southeastern Fishes Council Proceedings

The occurrence of Asiatic Weatherfish, Misgurnus anguillicaudatus, in Alabama, a state known for its rich biodiversity, has generated concern among conservation managers. The current study used respirometry techniques to investigate the effects of increasing temperature on four native southeastern fishes (one cyprinid, two percids, and one elassomid) and the non-native M. anguillicaudatus. A minimum of five individuals of each species were used, and three experimental temperatures were chosen to represent spring and summer averages of northeast Alabama streams (15, 20, and 25°C). Overall, mean standard metabolic rates (SMRs) for M. anguillicaudatus were low (97.01, 127.75, and 158 ...


Costs Of Group Locomotion: How Infant-Carrying And Group Members Mediate Walking Speed Decisions In North American And East African Populations, Leah M. Bouterse 2017 Seattle Pacific University

Costs Of Group Locomotion: How Infant-Carrying And Group Members Mediate Walking Speed Decisions In North American And East African Populations, Leah M. Bouterse

Honors Projects

A major portion of humans’ activity-based energy expenditure is taken up by locomotion, particularly walking. Humans can offset the energetic expenditure of walking in numerous ways, both evolutionary (such as changes in body shape) and culturally. Behaviorally, people can choose to walk in a variety of ways, including alone or with a group, carrying loads, and walking quickly or more slowly. All of these behaviors have energetic outcomes and as such can be important windows into how populations and groups adjust to different constraints. While sex differences in speed of paired walkers have been established by others, the dynamics of ...


Mechanisms Underlying Variation In Insect Chill Tolerance: The Role Of Ion And Water Transport, Lauren E. Des Marteaux 2017 The University of Western Ontario

Mechanisms Underlying Variation In Insect Chill Tolerance: The Role Of Ion And Water Transport, Lauren E. Des Marteaux

Electronic Thesis and Dissertation Repository

Water and ion homeostasis has emerged as an important factor limiting chill-susceptible insects at low temperatures; loss of this homeostasis in the cold likely contributes to chronic chilling injury, and reestablishment of homeostasis is required for recovery from chilling. Both plastic and interspecific variation in cold tolerance correlates with enhanced defense of water and ion homeostasis during cold exposure, however the mechanisms are poorly understood. Using Gryllus crickets, I generated and tested hypotheses about the mechanisms underlying this variation in transport function. I first related interspecific variation in cold tolerance to water and ion balance in early chill coma. A ...


The Long Haul: Migratory Flight Preparation And Performance In Songbirds, Morag F. Dick 2017 The University of Western Ontario

The Long Haul: Migratory Flight Preparation And Performance In Songbirds, Morag F. Dick

Electronic Thesis and Dissertation Repository

Migration requires birds to sustain high intensity endurance exercise for periods lasting from hours to days. Similar to athletes, preparation and nutrition is key to success. Birds seasonally prepare for migration, which includes increasing the capacity to oxidize fat in the flight muscles. Beyond fuelling migration, n-3 long-chain polyunsaturated fatty acids (PUFA) are hypothesized to be natural doping agents and increase endurance and fatty acid oxidative capacity. I examined how birds prepare for and sustain migratory flight and directly tested the role of n-3 PUFA. Using yellow-rumped warblers (Setophaga coronata) as a model species, I first examined the effects of ...


Patterns Of Morphological And Molecular Evolution In The Antillean Tree Bat, Ardops Nichollsi (Chiroptera: Phyllostomidae), Roxanne J. Larsen, Peter A. Larsen, Caleb D. Phillips, Hugh H. Genoways, Gary G. Kwiecinski, Scott C. Pedersen, Carleton J. Phillips, Robert J. Baker 2017 Duke University

Patterns Of Morphological And Molecular Evolution In The Antillean Tree Bat, Ardops Nichollsi (Chiroptera: Phyllostomidae), Roxanne J. Larsen, Peter A. Larsen, Caleb D. Phillips, Hugh H. Genoways, Gary G. Kwiecinski, Scott C. Pedersen, Carleton J. Phillips, Robert J. Baker

Mammalogy Papers: University of Nebraska State Museum

Species endemic to oceanic islands offer unique insights into the mechanisms underlying evolution and have served as model systems for decades. Often these species show phenotypic variation that is correlated with the ecosystems in which they occur and such correlations may be a product of genetic drift, natural selection, and/or environmental factors. We explore the morphologic and genetic variation within Ardops nichollsi, a species of phyllostomid bat endemic to the Lesser Antillean islands. Ardops nichollsi is an ideal taxon to investigate the tempo of evolution in Chiroptera, as it: is a recently derived genus in the family Phyllostomidae; contains ...


The Effects Of Sex, Energy, And Environmental Conditions On The Movement Ecology Of Migratory Bats, Kristin A. Jonasson 2017 The University of Western Ontario

The Effects Of Sex, Energy, And Environmental Conditions On The Movement Ecology Of Migratory Bats, Kristin A. Jonasson

Electronic Thesis and Dissertation Repository

Lack of knowledge about the behaviour of migratory species during the migratory period is a major barrier to conservation efforts. In this thesis I focus primarily on differences between the sexes of the bat Lasionycteris noctivagans, during spring migration. Females are pregnant during spring migration and this overlap between migration and reproduction may affect the time and energy management of females as compared to males. In Chapter 2 I examine spring migration phenology of bats at a stopover site. Females arrived earlier than males, likely to give their pups a long growing season. Fat stores appeared to reflect a strategy ...


The Western Painted Turtle Genome, A Model For The Evolution Of Extreme Physiological Adaptations In A Slowly Evolving Lineage, H. Bradley Shaffer, Patrick Minx, Daniel E. Warren, Andrew M. Shedlock, Robert C. Thomson, Nicole M. Valenzuela, John Abramyan, Chris T. Amemiya, Daleen Badenhorst, Kyle K. Biggar, Glen M. Borchert, Christopher W. Botka, Rachel M. Bowden, Edward L. Braun, Anne M. Bronikowski, Benoit G. Bruneau, Leslie T. Buck, Blanche Capel, Todd A. Castoe, Mike Czerwinski, Kim D. Delehaunty, Scott V. Edwards, Catrina C. Fronick, Matthew K. Fujita, Lucinda Fulton, Tina A. Graves, Richard E. Green, Wilfried Haerty, Ramkumar Hariharan, Omar Hernandez, LaDeana W. Hillier, Alisha K. Holloway, Daniel Janes, Fredric J. Janzen, Cyriac Kandoth, Lesheng Kong, AP Jason de Koning, Yang Li, Robert A. Literman, Suzanne E. McGaugh, Lindsey Mork, Michelle O'Laughlin, Ryan T. Paitz, David D. Pollock, Chris P. Ponting, Srihari Radhakrishnan, Brian J. Raney, Joy M. Richman, John St. John, Tonia Sue Schwartz, Arun Sethuraman, Phillip Q. Spinks, Kenneth B. Storey, Nay Thane, Tomas Vinar, Laura M. Zimmerman, Wesley C. Warren, Elaine R. Mardis, Richard K. Wilson 2017 University of California, Los Angeles

The Western Painted Turtle Genome, A Model For The Evolution Of Extreme Physiological Adaptations In A Slowly Evolving Lineage, H. Bradley Shaffer, Patrick Minx, Daniel E. Warren, Andrew M. Shedlock, Robert C. Thomson, Nicole M. Valenzuela, John Abramyan, Chris T. Amemiya, Daleen Badenhorst, Kyle K. Biggar, Glen M. Borchert, Christopher W. Botka, Rachel M. Bowden, Edward L. Braun, Anne M. Bronikowski, Benoit G. Bruneau, Leslie T. Buck, Blanche Capel, Todd A. Castoe, Mike Czerwinski, Kim D. Delehaunty, Scott V. Edwards, Catrina C. Fronick, Matthew K. Fujita, Lucinda Fulton, Tina A. Graves, Richard E. Green, Wilfried Haerty, Ramkumar Hariharan, Omar Hernandez, Ladeana W. Hillier, Alisha K. Holloway, Daniel Janes, Fredric J. Janzen, Cyriac Kandoth, Lesheng Kong, Ap Jason De Koning, Yang Li, Robert A. Literman, Suzanne E. Mcgaugh, Lindsey Mork, Michelle O'Laughlin, Ryan T. Paitz, David D. Pollock, Chris P. Ponting, Srihari Radhakrishnan, Brian J. Raney, Joy M. Richman, John St. John, Tonia Sue Schwartz, Arun Sethuraman, Phillip Q. Spinks, Kenneth B. Storey, Nay Thane, Tomas Vinar, Laura M. Zimmerman, Wesley C. Warren, Elaine R. Mardis, Richard K. Wilson

Anne Bronikowski

Abstract Background: We describe the genome of the western painted turtle, Chrysemys picta bellii, one of the most widespread, abundant, and well-studied turtles. We place the genome into a comparative evolutionary context, and focus on genomic features associated with tooth loss, immune function, longevity, sex differentiation and determination, and the species’ physiological capacities to withstand extreme anoxia and tissue freezing. Results: Our phylogenetic analyses confirm that turtles are the sister group to living archosaurs, and demonstrate an extraordinarily slow rate of sequence evolution in the painted turtle. The ability of the painted turtle to withstand complete anoxia and partial freezing ...


Altitude- And Sex-Specific Variation In Roosting Ecology And Thermoregulation Of Myotis Lucifugus In Yellowstone National Park, Alexandra C. Slusher 2017 University of Kentucky

Altitude- And Sex-Specific Variation In Roosting Ecology And Thermoregulation Of Myotis Lucifugus In Yellowstone National Park, Alexandra C. Slusher

Theses and Dissertations--Forestry and Natural Resources

Fifty-nine female and six male little brown myotis (Myotis lucifugus) were radio-tagged during the summers of 2012, 2013, 2014, and 2015 in Yellowstone National Park. The grand models for daily maximum skin temperature (F98,154 = 1.55, P = 0.007), daily minimum skin temperature (F98,154 = 1.33, P = 0.05), and daily variation in skin temperature (F98,154 = 1.56, P = 0.006) were significant across roost type and reproductive condition class for adult females. Roosts were classified into Types A (warmest roosts), B (roosts with largest daily temperature variance), and C (stable and cool roosts ...


The Effect Of Cold On The Physiology Of Drosophila Larva Heart And On Synaptic Transmission At Crayfish Neuromuscular Junctions, Yuechen Zhu 2017 University of Kentucky

The Effect Of Cold On The Physiology Of Drosophila Larva Heart And On Synaptic Transmission At Crayfish Neuromuscular Junctions, Yuechen Zhu

Theses and Dissertations--Biology

Ectothermic animals are susceptible to temperature changes such as cold shock with seasons. To survive through a cold shock, ectotherms have developed unique strategies. My interest is focusing on the physiological function of during cold shock and prolonged cold exposure in the fruit fly (Drosophila melanogaster) and crayfish (Procambarus clarkii). I used Drosophila melanogaster as a model system to investigate cardiac function in response to modulators (serotonin, acetylcholine, octopamine, dopamine and a cocktail of modulators) in acute cold shock and chronic cold shock conditions as possible mechanism to regulate heart rate in the cold. To examine if the dampened heart ...


Effect Of Oxygen-Limiting Tidal Conditions On Muscle Metabolism And Structure In The Giant Acorn Barnacle, Balanus Nubilus, Katie O. Grady 2016 California Polytechnic State University, San Luis Obispo

Effect Of Oxygen-Limiting Tidal Conditions On Muscle Metabolism And Structure In The Giant Acorn Barnacle, Balanus Nubilus, Katie O. Grady

Master's Theses and Project Reports

Crustacean muscle fibers are some of the largest cells in the animal kingdom, with fiber diameters in the giant acorn barnacle (Balanus nubilus) exceeding 3 mm. Sessile animals with extreme muscle sizes and that live in the hypoxia-inducing intertidal zone – like B. nubilus – represent ideal models for probing the effects of oxygen limitation on muscle cells. We investigated changes in metabolism and structure of B. nubilus muscle in response to: normoxic immersion, anoxic immersion, or air emersion, for acute (6h) or chronic (6h exposures twice daily for 2wks) time periods. Following exposure, we immediately measured hemolymph pO2, pCO2 ...


Examining The Combined Effects Of Dissolved Oxygen, Temperature, And Body Size On The Physiological Responses Of A Model Macrobenthic Polychaete Species, Capitella Teleta, Kelsey Burns Gillam 2016 University of Southern Mississippi

Examining The Combined Effects Of Dissolved Oxygen, Temperature, And Body Size On The Physiological Responses Of A Model Macrobenthic Polychaete Species, Capitella Teleta, Kelsey Burns Gillam

Dissertations

While the scientific community is in consensus that coastal systems are threatened by climate change, few climate change studies test the effects of more than one variable directly related to climate change. The dissolved oxygen (DO) levels of the ocean are currently subject to both global warming and eutrophication; 94% of all hypoxia zones are expected to experience >2°C increase by 2035. This dissertation aims to examine how a model organism responds to simultaneous thermal and DO stress involving four levels of DO (100%, 70%, 50%, and 20%) saturation and three temperatures (15°C, 20°C, and 25°C ...


Exploring The Relationship Between Behaviour And Neurochemistry In The Polyphenic Spider, Anelosimus Studiosus (Araneae: Theridiidae), Jennifer B. Price 2016 East Tennessee State University

Exploring The Relationship Between Behaviour And Neurochemistry In The Polyphenic Spider, Anelosimus Studiosus (Araneae: Theridiidae), Jennifer B. Price

Electronic Theses and Dissertations

The importance of social behaviour is evident in human society, but there are both costs and benefits associated with cooperation and sociality throughout the animal kingdom. At what point do the benefits outweigh the costs, and when do selective pressures favour sociality and colonization over solitude and independence? To investigate these questions, we have focused on an anomalous species of spider, Anelosimus studiosus, also known now as the northern social spider. Throughout its broad range, A. studiosus is solitary and aggressive, but recently, colonies of cooperative and social individuals have been observed at northern latitudes. This leads to two research ...


The Western Painted Turtle Genome, A Model For The Evolution Of Extreme Physiological Adaptations In A Slowly Evolving Lineage, H. Bradley Shaffer, Patrick Minx, Daniel E. Warren, Andrew M. Shedlock, Robert C. Thomson, Nicole M. Valenzuela, John Abramyan, Chris T. Amemiya, Daleen Badenhorst, Kyle K. Biggar, Glen M. Borchert, Christopher W. Botka, Rachel M. Bowden, Edward L. Braun, Anne M. Bronikowski, Benoit G. Bruneau, Leslie T. Buck, Blanche Capel, Todd A. Castoe, Mike Czerwinski, Kim D. Delehaunty, Scott V. Edwards, Catrina C. Fronick, Matthew K. Fujita, Lucinda Fulton, Tina A. Graves, Richard E. Green, Wilfried Haerty, Ramkumar Hariharan, Omar Hernandez, LaDeana W. Hillier, Alisha K. Holloway, Daniel Janes, Fredric J. Janzen, Cyriac Kandoth, Lesheng Kong, AP Jason de Koning, Yang Li, Robert A. Literman, Suzanne E. McGaugh, Lindsey Mork, Michelle O'Laughlin, Ryan T. Paitz, David D. Pollock, Chris P. Ponting, Srihari Radhakrishnan, Brian J. Raney, Joy M. Richman, John St. John, Tonia Sue Schwartz, Arun Sethuraman, Phillip Q. Spinks, Kenneth B. Storey, Nay Thane, Tomas Vinar, Laura M. Zimmerman, Wesley C. Warren, Elaine R. Mardis, Richard K. Wilson 2016 University of California, Los Angeles

The Western Painted Turtle Genome, A Model For The Evolution Of Extreme Physiological Adaptations In A Slowly Evolving Lineage, H. Bradley Shaffer, Patrick Minx, Daniel E. Warren, Andrew M. Shedlock, Robert C. Thomson, Nicole M. Valenzuela, John Abramyan, Chris T. Amemiya, Daleen Badenhorst, Kyle K. Biggar, Glen M. Borchert, Christopher W. Botka, Rachel M. Bowden, Edward L. Braun, Anne M. Bronikowski, Benoit G. Bruneau, Leslie T. Buck, Blanche Capel, Todd A. Castoe, Mike Czerwinski, Kim D. Delehaunty, Scott V. Edwards, Catrina C. Fronick, Matthew K. Fujita, Lucinda Fulton, Tina A. Graves, Richard E. Green, Wilfried Haerty, Ramkumar Hariharan, Omar Hernandez, Ladeana W. Hillier, Alisha K. Holloway, Daniel Janes, Fredric J. Janzen, Cyriac Kandoth, Lesheng Kong, Ap Jason De Koning, Yang Li, Robert A. Literman, Suzanne E. Mcgaugh, Lindsey Mork, Michelle O'Laughlin, Ryan T. Paitz, David D. Pollock, Chris P. Ponting, Srihari Radhakrishnan, Brian J. Raney, Joy M. Richman, John St. John, Tonia Sue Schwartz, Arun Sethuraman, Phillip Q. Spinks, Kenneth B. Storey, Nay Thane, Tomas Vinar, Laura M. Zimmerman, Wesley C. Warren, Elaine R. Mardis, Richard K. Wilson

Fredric Janzen

Abstract Background: We describe the genome of the western painted turtle, Chrysemys picta bellii, one of the most widespread, abundant, and well-studied turtles. We place the genome into a comparative evolutionary context, and focus on genomic features associated with tooth loss, immune function, longevity, sex differentiation and determination, and the species’ physiological capacities to withstand extreme anoxia and tissue freezing. Results: Our phylogenetic analyses confirm that turtles are the sister group to living archosaurs, and demonstrate an extraordinarily slow rate of sequence evolution in the painted turtle. The ability of the painted turtle to withstand complete anoxia and partial freezing ...


Duplication And Remolding Of Trna Genes In The Mitochondrial Genome Of Reduvius Tenebrosus (Hemiptera: Reduviidae), Pei Jiang, Hu Li, Fan Song, Yao Cai, Jianyun Wang, Jinpeng Liu, Wanzhi Cai 2016 China Agricultural University, China

Duplication And Remolding Of Trna Genes In The Mitochondrial Genome Of Reduvius Tenebrosus (Hemiptera: Reduviidae), Pei Jiang, Hu Li, Fan Song, Yao Cai, Jianyun Wang, Jinpeng Liu, Wanzhi Cai

Markey Cancer Center Faculty Publications

Most assassin bugs are predators that act as important natural enemies of insect pests. Mitochondrial (mt) genomes of these insects are double-strand circular DNAs that encode 37 genes. In the present study, we explore the duplication and rearrangement of tRNA genes in the mt genome of Reduvius tenebrosus, the first mt genome from the subfamily Reduviinae. The gene order rearranges from CR (control region)-trnI-trnQ-trnM-ND2 to CR-trnQ-trnI2-trnI1-trnM-ND2. We identified 23 tRNA genes, including 22 tRNAs commonly found in insects and an additional trnI (trnI2), which has high sequence similarity to trnM. We found several pseudo genes, such as pseudo- ...


Total Energy Expenditure In Captive Sapajus Apella, Wren Edwards 2016 CUNY Hunter College

Total Energy Expenditure In Captive Sapajus Apella, Wren Edwards

School of Arts & Sciences Theses

Primates expend approximately 50% less energy (kcal/day) for their body size than other eutherians. Using the doubly labeled water method, I investigated total energy expenditure (TEE) and physical activity in Sapajus apella. S. apella TEE was similar (p=0.67) to other platyrrhines, but 54% lower than expected for body mass.


Validation Of The Use Of Doubly Labeled Water For Measuring Metabolic Rate In Timber Rattlesnakes (Crotalus Horridus), Caitlin Hirsh 2016 University of Arkansas Fayetteville

Validation Of The Use Of Doubly Labeled Water For Measuring Metabolic Rate In Timber Rattlesnakes (Crotalus Horridus), Caitlin Hirsh

Biological Sciences Undergraduate Honors Theses

The doubly labeled water method is an isotopic technique for measuring field metabolic rate and water flux rates of free-living animals. We present a validation of the use doubly labeled water for measuring metabolic rate and water loss in Timber Rattlesnakes (Crotalus horridus). For this study seven animals of varying body size were used with masses ranging from 148 to 650 grams. Prior to dosing, blood samples were taken to establish background isotope levels for each animal. Snakes were injected with water enriched with isotopes of oxygen (18O) and hydrogen (2H, deuterium). The injected isotopes were then allowed to equilibrate ...


Description Of Cranial Elements And Ontogenetic Change Within Tropidolaemus Wagleri (Serpentes: Crotalinae)., Nicolette L. Hill 2016 East Tennessee State Universtiy

Description Of Cranial Elements And Ontogenetic Change Within Tropidolaemus Wagleri (Serpentes: Crotalinae)., Nicolette L. Hill

Electronic Theses and Dissertations

Tropidolaemus wagleri is a species of Asian pitviper with a geographic range including Thailand, Vietnam, Malaysia, Singapore, Bruniei, parts of Indonesia, and the hilippines. Tropidolaemus is a member of the Crotalinae subfamily, within Viperidae. The genus Tropidolaemus includes five species, and was once included within the genus Trimeresurus. While some osteologic characteristics have been noted a comprehensive description of cranial elements has not been produced for T. wagleri. An in-depth description of the cranial skeleton of Tropidolaemus wagleri lays the foundation for future projects to compare and contrast other taxa within Crotalinae and Viperidae. The chosen reference specimen was compared ...


The Influence Of Canine Aggression And Behavioral Treatment On Heart Rate Variability, Lydia Craig 2016 Macalester College

The Influence Of Canine Aggression And Behavioral Treatment On Heart Rate Variability, Lydia Craig

Psychology Honors Projects

Dog aggression affects many, with nearly 5 million dog bites reported yearly in the United States alone. With the physical, emotional, and monetary costs of bites, it is of considerable interest to identify dogs that are likely to bite. One physiological measure that might serve as an index of aggression is heart rate variability (HRV), which refers to vagally mediated beat-to-beat change in heart rate. Low HRV has been associated with impaired emotional and behavioral regulation and stress in both humans and animals. To assess whether this measure corresponds with aggression in dogs, resting HRV was measured for dogs with ...


Factors Affecting The Immune System Of The Ornate Box Turtle (Terrapene Ornata), Michelle W. McQuinn, Abigail A. Neyer, Gwendolyn C. Bachman 2016 University of Nebraska-Lincoln

Factors Affecting The Immune System Of The Ornate Box Turtle (Terrapene Ornata), Michelle W. Mcquinn, Abigail A. Neyer, Gwendolyn C. Bachman

UCARE Research Products

While many studies have detailed the complex intricacies of the endothermic immune system, relatively little is known about the immune system of ectotherms--specifically, reptiles. In an attempt to gain more knowledge about the factors affecting reptilian immune function, ornate box turtles (Terrapene ornata) were subjected to chronic stress in the form of high ambient temperatures in a semi-natural environment. It was hypothesized that chronic stress would lead to elevated levels of corticosterone in the blood, which would, in turn, suppress immune activity. It was found that body temperature and body mass in particular were significantly affected by chronic heat stress ...


The Individual And Interactive Effects Of Nitrogen And Phosphorus Enrichment On Coral Reefs, Andrew A. Shantz 2016 Florida International University

The Individual And Interactive Effects Of Nitrogen And Phosphorus Enrichment On Coral Reefs, Andrew A. Shantz

FIU Electronic Theses and Dissertations

Human domination of global nutrient cycles is profoundly altering our planet. Yet on coral reefs, the effects of changing nutrient regimes have likely been over-simplified. This dissertation investigates the complexity of animal-nutrient interactions at the organismal level and explores how the outcomes of these interactions cascade through levels of biological organization. To do so, I examined the effects of nitrogen (N) and phosphorus (P) on corals and macroalgae, and how these effects in turn influenced reef communities and entire ecosystems. I show that P consistently increases coral growth rates while N has variable, often negative, effects on coral growth. The ...


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