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Full-Text Articles in Medicine and Health Sciences

Limits To Sentience, Donald M. Broom Jun 2023

Limits To Sentience, Donald M. Broom

Animal Sentience

There are many parallels between cellular function in animals and plants. Plants can have complex interactions with their environments. But they lack a central nervous system, which is a prerequisite for sentience (the capacity to feel). In my view the suggestion that plants are sentient is not only empirically incorrect but potentially harmful to the efforts to protect the welfare of sentient beings.


Du Undergraduate Showcase: Research, Scholarship, And Creative Works, Caitlyn Aldersea, Justin Bravo, Sam Allen, Anna Block, Connor Block, Emma Buechler, Maria De Los Angeles Bustillos, Arianna Carlson, William Christensen, Olivia Kachulis, Noah Craver, Kate Dillon, Muskan Fatima, Angel Fernandes, Emma Finch, Colleen Cassidy, Amy Fishman, Andrea Francis, Stacia Fritz, Simran Gill, Emma Gries, Rylie Hansen, Shannon Powers, Jacqueline Martinez, Zachary Harker, Ashley Hasty, Mykaela Tanino-Springsteen, Kathleen Hopps, Adelaide Kerenick, Colin Kleckner, Ci Koehring, Elijah Kruger, Braden Krumholz, Maddie Leake, Lyneé Alves, Seraphina Loukas, Yatzari Lozano Vazquez, Haley Maki, Emily Martinez, Sierra Mckinney, Mykaela Tanino-Springsteen, Audrey Mitchell, Kipling Newman, Audrey Ng, Megan Lucyshyn, Andrew Nguyen, Stevie Ostman, Casandra Pearson, Alexandra Penney, Julia Gielczynski, Tyler Ball, Anna Rini, Christina Rorres, Simon Ruland, Helayna Schafer, Emma Sellers, Sarah Schuller, Claire Shaver, Kevin Summers, Isabella Shaw, Madison Sinar, Claudia Pena, Apshara Siwakoti, Carter Sorensen, Madi Sousa, Anna Sparling, Alexandra Revier, Brandon Thierry, Dylan Tyree, Maggie Williams, Lauren Wols May 2023

Du Undergraduate Showcase: Research, Scholarship, And Creative Works, Caitlyn Aldersea, Justin Bravo, Sam Allen, Anna Block, Connor Block, Emma Buechler, Maria De Los Angeles Bustillos, Arianna Carlson, William Christensen, Olivia Kachulis, Noah Craver, Kate Dillon, Muskan Fatima, Angel Fernandes, Emma Finch, Colleen Cassidy, Amy Fishman, Andrea Francis, Stacia Fritz, Simran Gill, Emma Gries, Rylie Hansen, Shannon Powers, Jacqueline Martinez, Zachary Harker, Ashley Hasty, Mykaela Tanino-Springsteen, Kathleen Hopps, Adelaide Kerenick, Colin Kleckner, Ci Koehring, Elijah Kruger, Braden Krumholz, Maddie Leake, Lyneé Alves, Seraphina Loukas, Yatzari Lozano Vazquez, Haley Maki, Emily Martinez, Sierra Mckinney, Mykaela Tanino-Springsteen, Audrey Mitchell, Kipling Newman, Audrey Ng, Megan Lucyshyn, Andrew Nguyen, Stevie Ostman, Casandra Pearson, Alexandra Penney, Julia Gielczynski, Tyler Ball, Anna Rini, Christina Rorres, Simon Ruland, Helayna Schafer, Emma Sellers, Sarah Schuller, Claire Shaver, Kevin Summers, Isabella Shaw, Madison Sinar, Claudia Pena, Apshara Siwakoti, Carter Sorensen, Madi Sousa, Anna Sparling, Alexandra Revier, Brandon Thierry, Dylan Tyree, Maggie Williams, Lauren Wols

DU Undergraduate Research Journal Archive

DU Undergraduate Showcase: Research, Scholarship, and Creative Works


Strong Inferences About Pain In Invertebrates Require Stronger Evidence, Edgar T. Walters Jan 2022

Strong Inferences About Pain In Invertebrates Require Stronger Evidence, Edgar T. Walters

Animal Sentience

Evidence for sentience in animals distantly related to humans is often sought in observations of behavioral and neural responses to noxious stimuli that would be painful in humans. Most proposed criteria for painful sentience in “lower” animals such as decapod crustaceans have no necessary links to the affective (“suffering”) component of pain. The best evidence for painful affect in animals is learned aversion to stimuli associated with noxious experience, and conditioned preference for contexts associated with relief from aversive consequences of noxious experience, as expressed in voluntary behavior. Such evidence is currently lacking for any invertebrate except octopus.


Why The Recognition Of Sentience Is So Important For Animal Welfare, Mark Jones Jan 2022

Why The Recognition Of Sentience Is So Important For Animal Welfare, Mark Jones

Animal Sentience

Rowan et al. (2022) provide a useful summary of the history and development of the philosophical, public, and legal recognition of animal sentience and its importance in improving the welfare of animals. Here I argue for the incorporation of the precautionary principle in sentience recognition, and the wider significance of sentience recognition to the current climate, biodiversity and human health crises.


Extending Animal Welfare Science To Include Wild Animals, Walter Veit, Heather Browning Jan 2021

Extending Animal Welfare Science To Include Wild Animals, Walter Veit, Heather Browning

Animal Sentience

Ng’s (2016) target article built on his earlier work advocating a science of welfare biology (Ng 1995). Although there were problems with the models proposed in Ng’s original paper regarding the balance of pleasure and suffering for wild animals, his call for a science of wild animal welfare was a sound one. This does not require a new discipline but just an extension of the existing frameworks and methods of animal welfare science to include wild animals.


Distal Excurrent Ducts And Penile Morphology Of The Urogenital System In The Mississippi Mud Turtle, Kinosternon Subrubrum Hippocrepis (Chelonia:Kinosternidae), Stanley E. Trauth, Michael V. Plummer Jan 2021

Distal Excurrent Ducts And Penile Morphology Of The Urogenital System In The Mississippi Mud Turtle, Kinosternon Subrubrum Hippocrepis (Chelonia:Kinosternidae), Stanley E. Trauth, Michael V. Plummer

Journal of the Arkansas Academy of Science

We examined the distal excurrent ductal morphology and penile anatomy of the urogenital system in the Mississippi Mud Turtle, Kinosternon subrubrum hippocrepis, from a small sample of individuals collected in Arkansas in order to provide additional information regarding turtle urogenital anatomy. Specifically, we focused on the basic anatomy and histology of distal excurrent ducts (ductus deferens and ureter), associated structures (urogenital papillae), and penile histology in this kinosternid turtle. In addition, we provide an overview of the gross urogenital anatomy in this turtle, given that little detailed information exists on this topic in the chelonian literature.


Morphology Of Rathke’S Glands In The Alligator Snapping Turtle, Macrochelys Temminckii (Chelonia: Chelydridae), Stanley E. Trauth Jan 2021

Morphology Of Rathke’S Glands In The Alligator Snapping Turtle, Macrochelys Temminckii (Chelonia: Chelydridae), Stanley E. Trauth

Journal of the Arkansas Academy of Science

I examined the morphology of Rathke’s glands (RG) in the Alligator Snapping Turtle, Macrochelys temminckii, using light microscopy and scanning electron microscopy. This species possesses 4 pairs of RG (i.e., an axillary and three inframarginals) that are embedded beneath marginal bones and are named primarily according to the anatomical location of their orifices. These holocrine-type, exocrine, integumentary glands are anatomically and ultrastructurally similar to one another. Each gland contains a single and highly vascularized secretory lobule, which is bounded by a thick tunic of asymmetrically-arranged striated muscle bundles. Two types of secretory vacuoles were identified within the holocrine cells …


Intensive Animal Farming Conditions Are A Major Threat To Global Health, Cynthia Schuck-Paim Aug 2020

Intensive Animal Farming Conditions Are A Major Threat To Global Health, Cynthia Schuck-Paim

Animal Sentience

Wiebers & Feigin accurately propose that reducing the risks posed by infectious disease outbreaks and other global health challenges will depend critically on transitioning away from intensive animal farming practices. Creating the right incentive structure for this transition to happen is one of the great challenges in the years to come, but a much-needed step to ensure the health and well-being of current and future generations.


Brain Complexity, Sentience And Welfare, Donald M. Broom Jul 2020

Brain Complexity, Sentience And Welfare, Donald M. Broom

Animal Sentience

Neither sentience nor moral standing is confined to animals with large or human-like brains. Invertebrates deserve moral consideration. Definition of terms clarifies the relationship between sentience and welfare. All animals have welfare but humans give more protection to sentient animals. Humans should be less human-centred.


The Necessity Of Human Attitude Change And Methods Of Avoiding Pandemics, Donald M. Broom Jan 2020

The Necessity Of Human Attitude Change And Methods Of Avoiding Pandemics, Donald M. Broom

Animal Sentience

Humans share their biology with other animals and in each of their actions should consider the consequences for all life. A series of measures can be taken by governments and individuals that would minimise inter-specific transfer of pathogens from wildlife and reduce the development of antimicrobial resistance.


A Review Of Rat Lungworm Infection And Recent Data On Its Definitive Hosts In Hawaii, Chris N. Niebuhr, Susan I. Jarvi, Shane R. Siers Jan 2019

A Review Of Rat Lungworm Infection And Recent Data On Its Definitive Hosts In Hawaii, Chris N. Niebuhr, Susan I. Jarvi, Shane R. Siers

Human–Wildlife Interactions

Rat lungworm (Angiostrongylus cantonensis) is a zoonotic nematode that causes rat lungworm disease (angiostrongyliasis), a potentially debilitating form of meningitis, in humans worldwide. The definitive hosts for rat lungworm are primarily members of the genus Rattus, with gastropods as intermediate hosts. This parasite has emerged as an important public health concern in the United States, especially in Hawaii, where the number of human cases has increased in the last decade. Here we discuss the current knowledge of the rat lungworm, including information on the life cycle and host species, as well as updates on known infection levels. Three …


A First Look At The Microbial Community Of Rabidosa Rabida, A Wolf Spider In Searcy, Arkansas, Patricia Rivera, Ryan Stork, Amber Hug Jan 2017

A First Look At The Microbial Community Of Rabidosa Rabida, A Wolf Spider In Searcy, Arkansas, Patricia Rivera, Ryan Stork, Amber Hug

Journal of the Arkansas Academy of Science

Many diverse animal models have been used to explore the interactions between host organisms and their microbiota. Increased understanding of microbe-host interactions could lead to improved healthcare and drug development. Spiders have venom, digestive fluid, and body fluid components that have been suggested to possess antimicrobial properties that could lead to new and interesting host-microbe interactions. While studies have been published on interactions between bacteria affecting the immune function and behavior of spiders, the spider microbiome has not been established to date. Excreta and body swabs were collected from Rabidosa rabida, a wolf spider typically found on tall grass …


Utilitarianism Generalized To Include Animals, Yew-Kwang Ng Jul 2016

Utilitarianism Generalized To Include Animals, Yew-Kwang Ng

Animal Sentience

In response to the seventeen commentaries to date on my target article on reducing animal suffering, I propose that the term “welfarism” (when used pejoratively by animal advocates) should be qualified as “anthropocentric welfarism” so as to leave “welfarism” simpliciter to be used in its generic sense of efforts to improve conditions for those who need it. Welfarism in this benign sense — even in its specific utilitarian form (maximizing the sum total of net welfare) with long-term future effects and effects on others (including animals) appropriately taken into account — should be unobjectionable (even if not considered sufficient by …


Proportionality Between Population Descriptors (Covariables) In An Aggregated Acanthocephalan (Helminth) Infection Of A Microcrustacean: Crofton Revisited, J. J. Daly Sr., K. Wagner Jan 2016

Proportionality Between Population Descriptors (Covariables) In An Aggregated Acanthocephalan (Helminth) Infection Of A Microcrustacean: Crofton Revisited, J. J. Daly Sr., K. Wagner

Journal of the Arkansas Academy of Science

We have previously shown that population parameters of the trematode metacercariae of Clinostomum marginatum in black bass (Micropterus spp.) were closely correlated with each other with the exception of prevalence (Daly et al. 2007, Daly (2014). Crofton (1971) and Haynes and Nicholas (1963) published raw data on an acanthocephalan, (Polymorphus minutus) in an amphipod intermediate host collected on 6 different sites on a stream. That data was used herein to examine similar correlations, as with Clinostomum, to see if another helminth infection, in this case from a different phylum, also had similar descriptor relationships. Forty one regression analyses were done …


Using Detection Dogs And Rspf Models To Assess Habitat Suitability For Bears In Greater Yellowstone, Jon P. Beckmann, Lisette P. Waits, Aimee Hurt, Alice Whitelaw, Scott Bergen Dec 2015

Using Detection Dogs And Rspf Models To Assess Habitat Suitability For Bears In Greater Yellowstone, Jon P. Beckmann, Lisette P. Waits, Aimee Hurt, Alice Whitelaw, Scott Bergen

Western North American Naturalist

In the northern U.S. Rockies, including the Greater Yellowstone Ecosystem (GYE), connectivity is a concern because large carnivores have difficulties dispersing successfully between protected areas. One area of high conservation value because of its importance for connecting the GYE to wilderness areas of central Idaho is the Centennial Mountains and surrounding valleys (2500 km2) along the Idaho–Montana border just west of Yellowstone National Park. The current expansion of grizzly bears (Ursus arctos) and other large carnivore populations outside protected areas of Yellowstone National Park and Grand Teton National Park has placed a greater emphasis on potential linkage zones …


Coccidia (Apicomplexa: Eimeriidae) Of Three-Toed Box Turtles, Terrapene Carolina Triunguis (Reptilia: Testudines), From Arkansas And Oklahoma, C. T. Mcallister, D. Motriuk-Smith, R. S. Seville, C. Hudson, M. B. Connior, H. W. Robison Jan 2015

Coccidia (Apicomplexa: Eimeriidae) Of Three-Toed Box Turtles, Terrapene Carolina Triunguis (Reptilia: Testudines), From Arkansas And Oklahoma, C. T. Mcallister, D. Motriuk-Smith, R. S. Seville, C. Hudson, M. B. Connior, H. W. Robison

Journal of the Arkansas Academy of Science

We collected 50 three-toed box turtles (Terrapene carolina triunguis) from 9 counties of Arkansas and 4 counties of Oklahoma, and examined their feces for coccidial parasites. Nine of 24 (38%) turtles from Arkansas and 8 of 26 (31%) from Oklahoma were found to be passing oocysts of Eimeria ornata. This represents two new geographic distributional records for this coccidian. Measurements of individual isolates of E. ornate as well as morphological characteristics are provided with comparison to its original description and to another Terrapene coccidian, Eimeria carri. In addition, we noted an adelid pseudoparasite being passed by a single T. c. …


Distribution Of Yellow Grub (Clinostomum Marginatum) Metacercariae In Black Bass (Micropterus Spp.) From Arkansas Ozark And Ouachita Reservoir Lakes, James J. Daly Sr. Jan 2013

Distribution Of Yellow Grub (Clinostomum Marginatum) Metacercariae In Black Bass (Micropterus Spp.) From Arkansas Ozark And Ouachita Reservoir Lakes, James J. Daly Sr.

Journal of the Arkansas Academy of Science

No abstract provided.


Initial Survey On Black-Spot Disease (Digenea: Strigeoidea: Diplostomidae) In Select Arkansas Fishes, C. T. Mcallister, R. Tumlison, H. W. Robison, S. E. Trauth Jan 2013

Initial Survey On Black-Spot Disease (Digenea: Strigeoidea: Diplostomidae) In Select Arkansas Fishes, C. T. Mcallister, R. Tumlison, H. W. Robison, S. E. Trauth

Journal of the Arkansas Academy of Science

No abstract provided.


Ectoparasites Of Sciurid Rodents In Arkansas, Including New State Records For Neohaematopinus Spp. (Phthiraptera: Anoplura: Polyplacidae), C. T. Mcallister, M. B. Connior, L. A. Durden Jan 2013

Ectoparasites Of Sciurid Rodents In Arkansas, Including New State Records For Neohaematopinus Spp. (Phthiraptera: Anoplura: Polyplacidae), C. T. Mcallister, M. B. Connior, L. A. Durden

Journal of the Arkansas Academy of Science

No abstract provided.


Rabies Prevalence Among And New Distribution Records Of Arkansas Bats, D. Blake Sasse, David A. Saugey Jan 2008

Rabies Prevalence Among And New Distribution Records Of Arkansas Bats, D. Blake Sasse, David A. Saugey

Journal of the Arkansas Academy of Science

No abstract provided.


Non-Invasive Technique For Assessing The Population Parameters Of Metacercariae Of Clinostomum Marginatum In Smallmouth Bass (Micropterus Dolomieu), James J. Daly Sr., Randal J. Keller, Bruce Deyoung Jan 2007

Non-Invasive Technique For Assessing The Population Parameters Of Metacercariae Of Clinostomum Marginatum In Smallmouth Bass (Micropterus Dolomieu), James J. Daly Sr., Randal J. Keller, Bruce Deyoung

Journal of the Arkansas Academy of Science

Clinostomllm marginatum is a trematode that uses a fish as its final intennediate host. The wonns in the fish are in metacercarial cysts and are known as yellow grub. Yellow grubs give the fish's flesh a wonny, unappetizing appearance and are a problem for commercial fish fanners in that heavily infected fish are not suitable for marketing. The parasite is common in smallmouth bass (Micropterus dolomieu) living in upland streams of Arkansas where the bass may serve as a wild reservoir for contamination of commercial fish ponds. Because smallmouth bass are a prized game fish, it would be desirable to …


Hyperinfection With The Bass Tapeworm, Proteocephalus Ambloplites (Cestoda), In The Black Basses Micropterus Punctulatus And M. Dolomieui From Certain Arkansas Reservoir Lakes, James J. Daly Sr., Randal J. Keller, Bruce Deyoung Jan 2006

Hyperinfection With The Bass Tapeworm, Proteocephalus Ambloplites (Cestoda), In The Black Basses Micropterus Punctulatus And M. Dolomieui From Certain Arkansas Reservoir Lakes, James J. Daly Sr., Randal J. Keller, Bruce Deyoung

Journal of the Arkansas Academy of Science

No abstract provided.


Identification Of Cystacanths And Adults Of Oligacanthorhynchus Tortuosa, Macracanthorhynchus Ingens, And Macracanthorhynchus Hirudinaceus Based On Probiscis And Hook Morphometrics, Dennis J. Richardson Jan 2005

Identification Of Cystacanths And Adults Of Oligacanthorhynchus Tortuosa, Macracanthorhynchus Ingens, And Macracanthorhynchus Hirudinaceus Based On Probiscis And Hook Morphometrics, Dennis J. Richardson

Journal of the Arkansas Academy of Science

No abstract provided.


Human Rabies Post-Exposure Treatment In Arkansas, 1994-2000, D. Blake Sasse Jan 2004

Human Rabies Post-Exposure Treatment In Arkansas, 1994-2000, D. Blake Sasse

Journal of the Arkansas Academy of Science

The Arkansas Department of Health recorded 118 incidents where humans in Arkansas were treated following exposure to confirmed rabid animals from 1994-2000. Domestic species accounted for 64% of incidents and 76% of total human exposures with the ratio of human exposures per rabid animal 17 times higher for domestic animals than wild animals. Records of 218 cases of human exposure to potentially rabid wild animals during this period were also examined to determine method of contact. While 72% of cases involving raccoons (Procyon lotor), skunks (Mephitis mephitis and Spilogale putorius), and foxes (Urocyon cinereoargenteus and Vulpes vulpes) were initiated by …


Parasites (Coccidia, Trematoda, Nematoda) From Selected Bats Of Arkansas, Chris T. Mcallister, Steve J. Upton, Charles R. Bursey Jan 2004

Parasites (Coccidia, Trematoda, Nematoda) From Selected Bats Of Arkansas, Chris T. Mcallister, Steve J. Upton, Charles R. Bursey

Journal of the Arkansas Academy of Science

No abstract provided.


Experimental Channel Catfish Virus Infection Mimics Natural Infection Of Channel Catfish, Robin L. Stingley, Wayne L. Gray, Billy R. Griffin, Reid Landes Jan 2003

Experimental Channel Catfish Virus Infection Mimics Natural Infection Of Channel Catfish, Robin L. Stingley, Wayne L. Gray, Billy R. Griffin, Reid Landes

Journal of the Arkansas Academy of Science

Channel catfish virus (CCV) causes a severe hemorrhagic disease in channel catfish fry and fingerlings. CCV epizootics are associated with elevated water temperatures and high mortality rates. Survivors of acute disease are latently infected with i virus. In this study, we investigated conditions effecting CCV pathogenesis and latency utilizing an experimental immersion model to simulate natural infection and a population of Arkansas catfish verified to have no prior CCV exposure, the results indicate that the Auburn- 1 laboratory strain is comparable to CCV field isolates in virulence and ability to establish latent infection. The study confirms that water temperature and …


Parasites Of Four Endemic Plethodon From Arkansas And Oklahoma, Chris T. Mcallister, Charles R. Bursey, Stanley E. Trauth Jan 2002

Parasites Of Four Endemic Plethodon From Arkansas And Oklahoma, Chris T. Mcallister, Charles R. Bursey, Stanley E. Trauth

Journal of the Arkansas Academy of Science

No abstract provided.


Coccidian Parasites (Apicomplexa: Eimeriidae) Of Select Rodents Of Western And Southwestern Arkansas And Northeastern Texas, Chris T. Mcallister, Joshua E. Kessler Jan 2002

Coccidian Parasites (Apicomplexa: Eimeriidae) Of Select Rodents Of Western And Southwestern Arkansas And Northeastern Texas, Chris T. Mcallister, Joshua E. Kessler

Journal of the Arkansas Academy of Science

No abstract provided.


Peripheral Blood Leukocyte Response And Macrophage Function During Eimeria Adenoeides Infection In Turkey Poults, Amanda D. Drake, Sarah E. Heuer, Timothy G. Kimball, Timothy O. Peters, H. David Chapman, Gisela F. Erf Jan 2001

Peripheral Blood Leukocyte Response And Macrophage Function During Eimeria Adenoeides Infection In Turkey Poults, Amanda D. Drake, Sarah E. Heuer, Timothy G. Kimball, Timothy O. Peters, H. David Chapman, Gisela F. Erf

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Intestinal coccidiosis, caused by various species of Eimeria, is an economically important disease of chickens and turkeys. The peripheral blood leukocyte response and macrophage functions during a coccidial infection in turkeys have not been defined. To examine these aspects of innate immunity during primary Eimeria infection in turkeys, 4-week-old poults were orally inoculated with either 50,000 E. adenoeides oocyst (24 infected poults) or water (24 control poults). To monitor the concentrations and proportions of white blood cells (WBC) throughout the course of infection, heparinized blood was collected from 12 infected and 12 control poults prior to inoculation (day 0), and …


Distribution Of Leconte's Free-Tailed Bat (Tadarida Brasiliensis Cynocephala) In Arkansas, With Notes On Reproduction And Natural History, David A. Saugey, D. Blake Sasse, J. D. Wilhide, Drew Reed, Tammy R. Jones, Darrell R. Heath, Daniel R. England Jan 2001

Distribution Of Leconte's Free-Tailed Bat (Tadarida Brasiliensis Cynocephala) In Arkansas, With Notes On Reproduction And Natural History, David A. Saugey, D. Blake Sasse, J. D. Wilhide, Drew Reed, Tammy R. Jones, Darrell R. Heath, Daniel R. England

Journal of the Arkansas Academy of Science

During the past 20 years (1982-2001) we have studied the biology, occurrence and distribution of LeConte's (Brazilian) free-tailed bat, Tadarida brasiliensis cynocephala, in Arkansas. Colonies and individuals were reported from man made structures only. Four new county records have been documented since 1988, extending the range from the central part of the state to Arkansas's northern-most tier of counties. Numerous nuisance maternity colonies were investigated during exclusion activities and one, year-round colony provided the majority of reproductive data. A total of 152 free-tailed bats was submitted to the Arkansas Department of Health Rabies Laboratory (1982-2001); most during February through April, …