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Articles 31 - 60 of 76
Full-Text Articles in Animal Studies
Blood Cortisol Concentrations Predict Boldness In Juvenile Mulloway (Argyosomus Japonicus), Vincent Raoult, Culum Brown, Amina Zuberi, Jane E. Williamson
Blood Cortisol Concentrations Predict Boldness In Juvenile Mulloway (Argyosomus Japonicus), Vincent Raoult, Culum Brown, Amina Zuberi, Jane E. Williamson
Sentience Collection
There is a growing interest in animal personality because individual variation is the substrate of the evolutionary process. Despite revelations that personality traits affect key fitness variables, little is known about the proximate mechanisms generating consistent behavioural differences between individuals. Boldness, the propensity to take risks, is one of the most widely studied aspects of personality in fishes. We assessed the position of juvenile Argyosomus japonicus on the ‘‘boldness–shyness’’ continuum by repeatedly recording the time taken to exit a refuge and explore a novel environment. Stress-related hormone concentrations after exposure to a mild stressor were analysed 1 month before behavioural …
Plasticity Of Boldness In Rainbow Trout, Oncorhynchus Mykiss: Do Hunger And Predation Influence Risk-Taking Behaviour?, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon
Plasticity Of Boldness In Rainbow Trout, Oncorhynchus Mykiss: Do Hunger And Predation Influence Risk-Taking Behaviour?, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon
Ethology Collection
Boldness, a measure of an individual's propensity for taking risks, is an important determinant of fitness but is not necessarily a fixed trait. Dependent upon an individual's state, and given certain contexts or challenges, individuals may be able to alter their inclination to be bold or shy in response. Furthermore, the degree to which individuals can modulate their behaviour has been linked with physiological responses to stress. Here we attempted to determine whether bold and shy rainbow trout, Oncorhynchus mykiss, can exhibit behavioural plasticity in response to changes in state (nutritional availability) and context (predation threat). Individual trout were initially …
In Defense Of (Some) Meat, Harold Herzog
In Defense Of (Some) Meat, Harold Herzog
'Animals and Us' Blog Posts
My contribution to the New York Times "defense of meat-eating" contest.
Food Safety Risks Associated With U.S. Horse Slaughter
Food Safety Risks Associated With U.S. Horse Slaughter
Agribusiness Reports
Meat originating from U.S. horses may contain residues from substances banned by the U.S. Food and Drug Administration and the European Union for use in animals intended for consumption. Phenylbutazone, for example, is commonly administered to U.S. horses and has been associated with life-threatening reactions in humans. Requiring a thorough drug history for each U.S. horse intended for human consumption may help circumvent human health risks.
Using Grizzly Bears To Assess Harvest-Ecosystem Tradeoffs In Salmon Fisheries, Taal Levi, Chris T. Darimont, Misty Macduffee, Marc Mangel, Paul C. Paquet, Christopher C. Wilmers
Using Grizzly Bears To Assess Harvest-Ecosystem Tradeoffs In Salmon Fisheries, Taal Levi, Chris T. Darimont, Misty Macduffee, Marc Mangel, Paul C. Paquet, Christopher C. Wilmers
Aquaculture and Fisheries Collection
Implementation of ecosystem-based fisheries management (EBFM) requires a clear conceptual and quantitative framework for assessing how different harvest options can modify benefits to ecosystem and human beneficiaries. We address this social-ecological need for Pacific salmon fisheries, which are economically valuable but intercept much of the annual pulse of nutrient subsidies that salmon provide to terrestrial and aquatic food webs. We used grizzly bears, vectors of salmon nutrients and animals with densities strongly coupled to salmon abundance, as surrogates for ‘‘salmon ecosystem’’ function. Combining salmon biomass and stock-recruitment data with stable isotope analysis, we assess potential tradeoffs between fishery yields and …
The Effect Of Neutering On The Risk Of Urinary Incontinence In Bitches – A Systematic Review, W. Beauvais, J. M. Cardwell, D. C. Brodbelt
The Effect Of Neutering On The Risk Of Urinary Incontinence In Bitches – A Systematic Review, W. Beauvais, J. M. Cardwell, D. C. Brodbelt
Endocrinology Collection
An increased risk of urinary incontinence in bitches has often been associated with previous ovariohysterectomy but remains controversial. The objective of this study was to evaluate the strength of evidence for an association between neutering or age at neutering and urinary incontinence in bitches and to estimate the magnitude of any effect found. A systematic review of peer‐reviewed original English analytic journal articles was conducted, based on Cochrane guidelines (Higgins and Green 2009) Of 1,853 records screened, seven studies were identified that examined the effect of neutering or age at neutering on the risk of urinary incontinence but …
An Hsus Report: Food Safety Risks Associated With U.S. Horse Slaughter, The Humane Society Of The United States
An Hsus Report: Food Safety Risks Associated With U.S. Horse Slaughter, The Humane Society Of The United States
Impact of Animal Agriculture
Meat originating from U.S. horses may contain residues from substances banned by the U.S. Food and Drug Administration and the European Union for use in animals intended for consumption. Phenylbutazone, for example, is commonly administered to U.S. horses and has been associated with life-threatening reactions in humans. Requiring a thorough drug history for each U.S. horse intended for human consumption may help circumvent human health risks.
Social Effects On Vocal Ontogeny In An Ungulate, The Goat, Capra Hircus, Elodie F. Briefer, Alan G. Mcelligott
Social Effects On Vocal Ontogeny In An Ungulate, The Goat, Capra Hircus, Elodie F. Briefer, Alan G. Mcelligott
Sentience Collection
Vocal plasticity is the ability of an individual to modify its vocalizations according to its environment. Humans benefit from an extreme form of vocal plasticity, allowing us to produce a wide range of sounds. This capacity to modify sounds has been shown in three bird orders and in a few nonhuman mammal species, all characterized by complex vocal communication systems. In other mammals, there is no evidence for a social impact on vocal development. We investigated whether contact calls were affected by social environment and kinship during early ontogeny in goats, a highly vocal and social species. To test the …
A Blood Sport For The Rich And Famous?, Harold Herzog
A Blood Sport For The Rich And Famous?, Harold Herzog
Competitive Animal Racing Collection
A new report finds horse racing carnage is getting worse.
Whip Use By Jockeys In A Sample Of Australian Thoroughbred Races—An Observational Study, Paul D. Mcgreevy, Robert A. Corken, Hannah Salvin, Celeste M. Black
Whip Use By Jockeys In A Sample Of Australian Thoroughbred Races—An Observational Study, Paul D. Mcgreevy, Robert A. Corken, Hannah Salvin, Celeste M. Black
Competitive Animal Racing Collection
The use of whips by jockeys is an issue. The current study viewed opportunistic high-speed footage of 15 race finishes frame-by-frame to examine the outcomes of arm and wrist actions (n = 350) on 40 horses viewed from the left of the field. Any actions fully or partially obscured by infrastructure or other horses were removed from the database, leaving a total of 104 non-contact sweeps and 134 strikes. For all instances of arm actions that resulted in fully visible whip strikes behind the saddle (n = 109), the outcomes noted were area struck, percentage of unpadded section making contact, …
Horse Racing: Cruelties We Condone And Cruelties We Condemn, Harold Herzog
Horse Racing: Cruelties We Condone And Cruelties We Condemn, Harold Herzog
Competitive Animal Racing Collection
Why the deaths of HBO's "Luck" horses were predictable.
Chimpanzee Personhood: Supporting Scientific Documentation, Jonathan Balcombe
Chimpanzee Personhood: Supporting Scientific Documentation, Jonathan Balcombe
Sentience Collection
The aim of this document is to provide scientific support for granting chimpanzees and bonobos the legal status of persons. The studies summarized here have been selected because they show these species to have levels of awareness, cognition, emotionality and virtue that rivals that of their hominid cousins, Homo sapiens. Chimps, like other great apes, have long-term relationships, grieve the loss of a loved-one, can solve complex puzzles, display a sense of justice, and can learn hundreds of signs and put them together in logical sentences.
The Ban On The Use Of Chimpanzees In Biomedical Research And Testing In The Uk Should Be Made Permanent And Legally Binding, Michelle Thew, Jarrod Bailey, Michael Balls, Michelle Hudson
The Ban On The Use Of Chimpanzees In Biomedical Research And Testing In The Uk Should Be Made Permanent And Legally Binding, Michelle Thew, Jarrod Bailey, Michael Balls, Michelle Hudson
Laboratory Experiments Collection
The Coalition Government is currently considering how to transpose Directive 2010/63/EU on animal experimentation into UK law. The Directive bans the use of Great Apes in laboratories, but EU Member States can seek (now or, more likely, at some time in the future) a derogation from the Commission to permit such use, where this is considered essential for the preservation of the species in question or in relation to an unexpected outbreak of a life-threatening or debilitating clinical condition in human beings. Currently, the policy of the Government is not to approve any experiments on Great Apes, but it is …
The Welfare Of Animals In The Foie Gras Industry
The Welfare Of Animals In The Foie Gras Industry
Agribusiness Reports
The production of pâté de foie gras involves force-feeding ducks and geese by placing a long tube down the birds’ esophagi and pumping an unnatural quantity of food directly into their stomachs. Force-feeding induces hepatic lipidosis and causes the birds’ livers to become diseased and enlarged. Substantial scientific evidence suggests that force-feeding can cause pain and injury from feeding tube insertion, fear and stress during capture and handling, gait abnormality due to distended livers, pathologies in liver function, and increased mortality. Force-feeding birds to produce foie gras is detrimental to their welfare.
Tool Use In Fishes, Culum Brown
Tool Use In Fishes, Culum Brown
Sentience Collection
Tool use was once considered the sole domain of humans. Over the last 40 years, however, it has become apparent that tool use may be widespread across the animal kingdom. Pioneering studies in primates have shaped the way we think about tool use in animals, but have also lead to a bias both in terms of our expectations about which animals should be capable of using tools and the working definition of tool use. Here I briefly examine tool use in terrestrial animals and consider the constraints of the current working definition of tool use in fishes. Fishes lack grasping …
Isotopic Niche Differentiation Among Mammals From A Rainforest In Peninsular Malaysia, Kae Kawanishi, Song Horng Neo Liang, Chris T. Darimont, Thomas E. Reimchen, Melvin E. Sunquist
Isotopic Niche Differentiation Among Mammals From A Rainforest In Peninsular Malaysia, Kae Kawanishi, Song Horng Neo Liang, Chris T. Darimont, Thomas E. Reimchen, Melvin E. Sunquist
Biochemistry Collection
We performed stable isotope analysis on eight mammalian species: pig-tailed macaque (Macaca nemestrina), long-tailed macaque (M. fascicularis), dusky leaf monkey (Trachypithecus obscurus), brush-tailed porcupine (Atherurus macrourus), wild boar (Sus scrofa), lesser mouse-deer (Tragulus javanicus), greater mouse-deer (T. napu), and barking deer (Muntiacus muntjac), to test the hypothesis that the differences in diet and habitat types among species, guilds and foraging strategies are reflected in the δ15N and δ13C signatures of their tissues. Whereas the isotopic ratios differed among taxa, the four major isotopic groups observed were: mouse-deer species, primate species, brush-tailed porcupine, and wild boar. The …
Bias During The Evaluation Of Animal Studies, Andrew Knight
Bias During The Evaluation Of Animal Studies, Andrew Knight
Morality and Ethics of Animal Experimentation Collection
My recent book entitled The Costs and Benefits of Animal Experiments seeks to answer a key question within animal ethics, namely: is animal experimentation ethically justifiable? Or, more precisely, is it justifiable within the utilitarian cost:benefit framework that fundamentally underpins most regulations governing animal experimentation? To answer this question I reviewed more than 500 scientific publications describing animal studies, animal welfare impacts, and alternative research, toxicity testing and educational methodologies. To minimise bias I focused primarily on large-scale systematic reviews that had examined the human clinical and toxicological utility of animal studies. Despite this, Dr. Susanne Prankel recently reviewed my …
Complex Patterns Of Male Alliance Formation In A Dolphin Social Network, Joanna Wiszniewski, Culum Brown, Luciana M. Möller
Complex Patterns Of Male Alliance Formation In A Dolphin Social Network, Joanna Wiszniewski, Culum Brown, Luciana M. Möller
Sentience Collection
The formation and maintenance of alliances is regarded as one of the most socially complex male mating strategies in mammals. The prevalence and complexity of these cooperative relationships, however, varies considerably among species as well as within and between populations living in different ecological and social environments. We assessed patterns of alliance formation for Indo-Pacific bottlenose dolphins, Tursiops aduncus, in Port Stephens, New South Wales, Australia, to investigate the stability of these alliances, the structure of associations, as well as variation in schooling patterns among males. Our results showed that association patterns among males within this population showed considerable variability. …
Whaling: Don’T Trade The Moratorium Away, Mark Peter Simmonds, Sue Fisher
Whaling: Don’T Trade The Moratorium Away, Mark Peter Simmonds, Sue Fisher
Conservation Collection
In their proposal to allocate ‘whale shares’ to both whalers and conservationists as an alternative to the International Whaling Commission (IWC) moratorium on commercial whaling, Christopher Costello and colleagues overlook several factors (Nature 481, 139–140; 2012).
Superglue Is Not Super: An Assessment Of Superglue For Suturing Tag Incisions In A Cultured Marine Fish, Vincent Raoult, Culum Brown, Jane E. Williamson
Superglue Is Not Super: An Assessment Of Superglue For Suturing Tag Incisions In A Cultured Marine Fish, Vincent Raoult, Culum Brown, Jane E. Williamson
Aquaculture Collection
No abstract provided.
Natural Healers: The Four Pillars Of Medicine And How Animals Use Them, Harold Herzog
Natural Healers: The Four Pillars Of Medicine And How Animals Use Them, Harold Herzog
'Animals and Us' Blog Posts
Is meat-eating the reason pet-owners get sicker than their dogs?
Animals On The Borderline: The Horse Slaughter Controversy, Harold Herzog, Jenny Vermilya
Animals On The Borderline: The Horse Slaughter Controversy, Harold Herzog, Jenny Vermilya
Slaughter and Slaughtering Practices Collection
Are horses pets, products, or both?
Your Worst Animal Nightmare, Harold Herzog
Your Worst Animal Nightmare, Harold Herzog
'Animals and Us' Blog Posts
Monster snakes are headed your way...
Construct Validity Of Animal-Assisted Therapy And Activities: How Important Is The Animal In Aat?, Lori Marino
Construct Validity Of Animal-Assisted Therapy And Activities: How Important Is The Animal In Aat?, Lori Marino
Animal-Assisted Therapy Collection
Animal-assisted therapy and animal-assisted activities involve a nonhuman animal as a key therapeutic agent in some kind of intervention that may range from highly specified, as in AAT, to more casual, as in AAA. In this review I address the question: How important is the animal in animal therapy? In other words, does the recent literature strongly support the notion that a live animal, as opposed to another novel stimulating component, is specifically necessary for therapeutic success. Two meta-analyses and 28 single empirical studies were reviewed in order to address this issue. I conclude that the effects of AAT and …
Cetaceans And Marine Debris: The Great Unknown, Mark Peter Simmonds
Cetaceans And Marine Debris: The Great Unknown, Mark Peter Simmonds
Ecology Collection
Plastics and other marine debris have been found in the gastrointestinal tracts of cetaceans, including instances where large quantities of material have been found that are likely to cause impairment to digestive processes and other examples, where other morbidity and even death have resulted. In some instances, debris may have been ingested as a result of the stranding process and, in others, it may have been ingested when feeding. Those species that are suction or “ram” feeders may be most at risk. There is also evidence of entanglement of cetaceans in marine debris. However, it is usually difficult to distinguish …
Confronting Language, Representation, And Belief: A Limited Defense Of Mental Continuity, Kristin Andrews, Ljiljana Radenovic
Confronting Language, Representation, And Belief: A Limited Defense Of Mental Continuity, Kristin Andrews, Ljiljana Radenovic
Sentience Collection
According to the mental continuity claim (MCC), human mental faculties are physical and beneficial to human survival, so they must have evolved gradually from ancestral forms and we should expect to see their precursors across species. Materialism of mind coupled with Darwin’s evolutionary theory leads directly to such claims and even today arguments for animal mental properties are often presented with the MCC as a premise. However, the MCC has been often challenged among contemporary scholars. It is usually argued that only humans use language and that language as such has no precursors in the animal kingdom. Moreover, language is …
The Hsus Investigates: Chicagoland Pet Stores, The Humane Society Of The United States
The Hsus Investigates: Chicagoland Pet Stores, The Humane Society Of The United States
PUPPY MILL INFORMATION
Over three days (October 29-31, 2012), an HSUS investigator and a local Chicago resident visited 12 Chicagoland pet stores to find out where the cute little puppies in the windows were bred. Again and again, salespeople denied that their puppies came from puppy mills, and most did not comply with a law passed in 2010 by the State requiring pet shops to “post in a conspicuous place in writing on or near the cage of any dog or cat available for sale the information required by subsection (a) of this section.” The information required includes the price, age, health and …
The American Kennel Club: No Longer “The Dog's Champion?”, The Humane Society Of The United States
The American Kennel Club: No Longer “The Dog's Champion?”, The Humane Society Of The United States
PUPPY MILL INFORMATION
The AKC has historically billed itself as “The Dog’s Champion,” the gold standard registry for purebred puppies. The AKC's mission includes advocating for advances in “canine health and well- being” and working “to promote responsible dog ownership.”*1 Yet with all its emphasis on proper dog and puppy care, in recent years the AKC has opposed the majority of initiatives designed to prevent cruelty at large-scale breeding facilities known as puppy mills. In contrast to its vague public statements condemning substandard kennels, over the past 5 years the AKC has opposed more than 80 different bills and ordinances designed to require …
Animal Learning And Training: Implications For Animal Welfare, Sabrina I.C.A. Brando
Animal Learning And Training: Implications For Animal Welfare, Sabrina I.C.A. Brando
Assessment of Animal Welfare Collection
KEY POINTS
- A definition of animal welfare is the state of the individual as it attempts to cope with its environment.
- Welfare concerns all of the mechanisms for coping, involving physiology, behavior, feelings, and pathologic responses.
- When training programs are not in place the animal’s welfare could be impaired.
- Some of the behaviors an animal exhibits can be used to gain insight into how the animal feels about the environment, caretakers, and procedures.
- Many contemporary animal trainers and care specialists focus on building relationships using positive reinforcement.
Clinical Anesthesia And Analgesia In Fish, Lynne U. Sneddon
Clinical Anesthesia And Analgesia In Fish, Lynne U. Sneddon
Veterinary Science and Medicine Collection
Fish have become a popular experimental model and companion animal, and are also farmed and caught for food. Thus, surgical and invasive procedures in this animal group are common, and this review will focus on the anesthesia and analgesia of fish. A variety of anesthetic agents are commonly applied to fish via immersion. Correct dosing can result in effective anesthesia for acute procedures as well as loss of consciousness for surgical interventions. Dose and anesthetic agent vary between species of fish and are further confounded by a variety of physiological parameters (e.g., body weight, physiological stress) as well as environmental …