Open Access. Powered by Scholars. Published by Universities.®

Evolution Commons™

Open Access. Powered by Scholars. Published by Universities.®

Terrestrial and Aquatic Ecology

Institution
Keyword
Publication Year
Publication
Publication Type

Articles 361 - 390 of 452

Full-Text Articles in Evolution

Caterpillars, Consciousness And The Origins Of Mind, Arthur S. Reber Jul 2016

Caterpillars, Consciousness And The Origins Of Mind, Arthur S. Reber

Animal Sentience

A novel framework for the origins of consciousness and mind, the Cellular Basis of Consciousness (CBC), is presented. The model is based on a simple, perhaps radical axiom: subjectivity is an inherent feature of particular kinds of organic form. Experiential states, including those denoted as "mind" and "consciousness," are present in the most primitive species. The model has several conceptual and empirical virtues, among them: (a) it (re)solves the problem of how minds are created by brains ─ also known as the "Hard Problem" (Chalmers 1995) ─ by revealing that the apparent difficulty results from a category error, (b) it …


Are Animals Persons?, Mark Rowlands Jul 2016

Are Animals Persons?, Mark Rowlands

Animal Sentience

It is orthodox to suppose that very few, if any, nonhuman animals are persons. The category “person” is restricted to self-aware creatures: humans (above a certain age) and possibly some of the great apes and cetaceans. I argue that this orthodoxy should be rejected, because it rests on a mistaken conception of the kind of self-awareness relevant to personhood. Replacing this with a sense of self-awareness that is relevant requires us to accept that personhood is much more widely distributed through the animal kingdom.


Insects Have The Capacity For Subjective Experience, Colin Klein, Andrew B. Barron Jul 2016

Insects Have The Capacity For Subjective Experience, Colin Klein, Andrew B. Barron

Animal Sentience

To what degree are non-human animals conscious? We propose that the most meaningful way to approach this question is from the perspective of functional neurobiology. Here we focus on subjective experience, which is a basic awareness of the world without further reflection on that awareness. This is considered the most basic form of consciousness. Tellingly, this capacity is supported by the integrated midbrain and basal ganglia structures, which are among the oldest and most highly conserved brain systems in vertebrates. A reasonable inference is that the capacity for subjective experience is both widespread and evolutionarily old within the vertebrate lineage. …


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 …


Cross-Species Mind-Reading, Stevan Harnad Jul 2016

Cross-Species Mind-Reading, Stevan Harnad

Animal Sentience

We can never be sure anyone else is sentient. But we can be sure enough in the case of other people, nonhuman primates, mammals, birds, fish, lower vertebrates and invertebrates as to make scepticism academic and otiose (not to mention monumentally cruel). The only genuinely uncertain kinds of cases are jellyfish, microbes and plants. The rest is not about whether but what they are feeling.


My Orgasms Cannot Be Traded Off Against Others’ Agony, Stevan Harnad Jul 2016

My Orgasms Cannot Be Traded Off Against Others’ Agony, Stevan Harnad

Animal Sentience

Only I can calculate my own welfare as net pleasure minus pain. No one else can do that calculation for me – nor for a population, and especially not averaging across some individuals’ pleasure and other individuals’ pain. Pain and pleasure are incommensurable and only pain matters morally. To maximize welfare is to minimize pain.


In Praise Of Fishes: Précis Of What A Fish Knows (Balcombe 2016), Jonathan Balcombe Jul 2016

In Praise Of Fishes: Précis Of What A Fish Knows (Balcombe 2016), Jonathan Balcombe

Animal Sentience

Our relationship to fishes in the modern era is deeply problematic. We kill and consume more of them than any other group of vertebrates. At the same time, advances in our knowledge of fishes and their capabilities are gaining speed. Fish species diversity exceeds that of all other vertebrates combined, with a wide range of sensory adaptations, some of them (e.g., geomagnetism, water pressure and movement detection, and communication via electricity) alien to our own sensory experience. The evidence for pain in fishes (despite persistent detractors) is strongly supported by anatomical, physiological and behavioral studies. It is likely that fishes …


Sentience As Moral Consideration And Disvalue In Nature, Daniel Dorado Jul 2016

Sentience As Moral Consideration And Disvalue In Nature, Daniel Dorado

Animal Sentience

In recent work Ng assumes that it is good to engage in activities aimed at promoting ecosystem conservation. The only way Ng can derive this from the axiology he assumes (the view that wellbeing is the only intrinsically valuable or disvaluable thing) would be to assume that ecosystem conservation would benefit the individuals involved. This can be so as long as value prevails over disvalue in the target environments. Ng seems to assume this is indeed the case, but he does not explain why, and it is a claim that goes against the conclusions he has argued for previously (Ng …


Inalienable Rights And Pluralism In Animal Advocacy, Beril Sözmen Jul 2016

Inalienable Rights And Pluralism In Animal Advocacy, Beril Sözmen

Animal Sentience

I comment on two of Ng’s suggestions. There is a lack of support for his suggestion that some experiments on individual animals will be useful for future success, so they should be permitted. I also question his recommendation that animal advocacy should focus on farmed animals first and wild animals later. The lack of solid support for why this would be a more effective strategy leads me to suggest a more pluralistic support of a variety of types of advocacy.


Changing Attitudes Towards Animals In The Wild And Speciesism, Oscar Horta Jul 2016

Changing Attitudes Towards Animals In The Wild And Speciesism, Oscar Horta

Animal Sentience

I argue that despite Ng’s claim that we should postpone the defense of those animals that live in the wild, we do have reasons to start spreading concern for them now. We can do it by (i) changing public attitude by heightening awareness of speciesism, by which we will also challenge animal exploitation; and (ii) by disseminating information about the situation of animals in the wild.


Why We Should Not Postpone Awareness Of Wild Animal Suffering, Catia Faria Jun 2016

Why We Should Not Postpone Awareness Of Wild Animal Suffering, Catia Faria

Animal Sentience

Ng (2016) restates his case for the importance of wild animal suffering (1995). Nevertheless, he suggests that the most effective way to reduce nonhuman suffering overall is to give short-term priority to the suffering of farmed animals. It is not clear that Ng puts forward a successful case. Our current efforts to prevent animal suffering overall should also include raising awareness of wild animal suffering now as well as promoting research on safe and feasible ways to prevent wild animal suffering in the future.


The North American Grouse: Their Biology And Behavior, Paul A. Johnsgard Jun 2016

The North American Grouse: Their Biology And Behavior, Paul A. Johnsgard

Zea E-Books Collection

The ten currently recognized species of grouse in North America have played an important role in America’s history, from the famous but ill-fated heath hen, a primary source of meat for the earliest New England immigrants, to the ruffed grouse, currently one of the most abundant and soughtafter upland game birds in more than 40 states and provinces. This book summarizes the ecology, reproductive biology, and social behavior of all ten of the extant North American grouse species. It also describes the current status of grouse populations, some of which are perilously close to extinction. The social behavior of grouse …


The Line Drawn On Pain Still Holds, Bjorn H. Merker Mar 2016

The Line Drawn On Pain Still Holds, Bjorn H. Merker

Animal Sentience

The many substantive criticisms raised against Key by me and by many of the other commentators will not disappear by ignoring or waving them aside with meta-discourse about anthropomorphism, just-so stories, or celestial teapots. The conceptual edifice Key inhabits and defends with such gusto may look like an impregnable fortress from the inside – and Key behaves as if it were. From the outside, however, it looks more like a ramshackle structure gaping with holes and pieced together from imperfectly understood neuroscience and often faulty literature citations.


Slavery, Welfare And The Sixth Extinction, Stephen R. Clark Mar 2016

Slavery, Welfare And The Sixth Extinction, Stephen R. Clark

Animal Sentience

Ng’s laudable concern for animal welfare would be welcome to any sensible slave-owner wishing to preserve his investment. What welfarism – for slave-owners and animal husbandmen – fails to call into question is whether we have the right to breed, hold captive and kill animals at all: If it matters, as the widely recognized slogan of ‘Five Freedoms’ suggests, that animals have the chance to live a ‘normal’ life, then more matters than keeping them ‘happy’ in subjection. Their lives – and also the lives of wild things – also deserve respect.


Wild Animal Suffering And Vegan Outreach, Eze Paez Mar 2016

Wild Animal Suffering And Vegan Outreach, Eze Paez

Animal Sentience

Ng’s strategic proposal seems to downplay the potential benefits of advocacy for wild animals and omit what may be the most effective strategy to reduce the harms farmed animals suffer: vegan outreach.


Animal Suffering And Human Bias, Stijn Bruers Mar 2016

Animal Suffering And Human Bias, Stijn Bruers

Animal Sentience

Ng proposes concrete ways to decrease animal suffering on the basis of commonsense economic logic and research in welfare biology. But to reduce animal suffering effectively in livestock farming, animal experimentation or the natural environment we have to become more aware of our pervasive and spontaneous but unreliable intuitive moral judgments. These can generate biases that prevent us from decreasing animal suffering effectively.


An Animal Victim's Best Chance: Veterinary Legal Duty To Report Cruelty In The U.S., Lora Dunn Feb 2016

An Animal Victim's Best Chance: Veterinary Legal Duty To Report Cruelty In The U.S., Lora Dunn

Animal Sentience

Legislation throughout the U.S. recognizes animal sentience and the importance of veterinary reporting to combat the ongoing suffering of these animal victims: All 50 states have felony penalties available for animal cruelty crimes, and veterinary reporting is permitted or required in the majority of states. The remaining minority of U.S. states should take action to require veterinarians to report animal cruelty and render veterinarians immune for good faith reporting.


Veterinary Medical Associations Need To Educate Veterinarians For Mandatory Reporting Of Suspected Animal Abuse, Melinda V. Merck Feb 2016

Veterinary Medical Associations Need To Educate Veterinarians For Mandatory Reporting Of Suspected Animal Abuse, Melinda V. Merck

Animal Sentience

When animals are suffering, we have a duty to take action. With appropriate incentive and educational support mandatory veterinary reporting can be a great legal avenue to help ensure their safety and welfare.


Fish Pain's Burden Of Proof, Carl Safina Feb 2016

Fish Pain's Burden Of Proof, Carl Safina

Animal Sentience

A hypothesis like Key’s, that fish cannot feel pain, should really be stated as a null hypothesis — an assumption that there is no difference in the things being compared. Then evidence — including anecdotal evidence — for and against rejecting the null hypothesis can be examined and weighed. Key (2016a) has proven only that fish lack mammalian brains.


Burden Of Proof Lies With Proposer Of Celestial Teapot Hypothesis, Brian Key Feb 2016

Burden Of Proof Lies With Proposer Of Celestial Teapot Hypothesis, Brian Key

Animal Sentience

Bertrand Russell famously imagined the existence of a celestial teapot to highlight that the burden of proof of a hypothesis lay with its proposer and it was not the responsibility of others to refute it. Those who propose that fish feel pain must bear the burden of proof for their hypothesis. There are several common arguments adopted by those defending the position that fish feel pain. For instance, proponents envisage that pain is so important for human survival that they can’t imagine fish could exist without it. Out of this argument from incredulity emerges the idea that pain must have …


Animal Suffering In China, Peter J. Li Feb 2016

Animal Suffering In China, Peter J. Li

Animal Sentience

Chinese policy has been aimed at maximizing GDP; it is time to focus also on minimizing animal suffering.


Science And Sensibility, Bernard E. Rollin Feb 2016

Science And Sensibility, Bernard E. Rollin

Animal Sentience

The sentience and suffering of animals is obvious to common sense, even if science and industry claim to be agnostic. Economic incentives to reduce the suffering of animals are welcome, but it is not clear whether animals can turn to science for help.


When The Client Is Not The Abuser, But One Of The Abused, Tania Signal Feb 2016

When The Client Is Not The Abuser, But One Of The Abused, Tania Signal

Animal Sentience

The question of client confidentiality and reporting animal abuse is complicated when the client is not the abuser, and when the abuse (of both people and animals) may escalate precisely because it has been (or may be) reported.


A Single Strand Of Argument With Unfounded Conclusion, Robert W. Elwood Jan 2016

A Single Strand Of Argument With Unfounded Conclusion, Robert W. Elwood

Animal Sentience

Key (2016) describes the neural system involved in human pain experience in an excellent fashion but then suggests that only that complete system can generate the experience of pain. Thus animals without all components will not feel pain. This argument has been refuted in the past by analogy to vision where it is clear that a broad range of taxa, vertebrate and invertebrate, have good visual abilities albeit with completely different central nervous systems and receptors. This known counterargument to Key’s main idea is not mentioned in the target article. Further criteria that might indicate pain and studies examining these …


Cortex Necessary For Pain — But Not In Sense That Matters, Adam J. Shriver Jan 2016

Cortex Necessary For Pain — But Not In Sense That Matters, Adam J. Shriver

Animal Sentience

Certain cortical regions are necessary for pain in humans in the sense that, at particular times, they play a direct role in pain. However, it is not true that they are necessary in the more important sense that pain is never possible in humans without them. There are additional details from human lesion studies concerning functional plasticity that undermine Key’s (2016) interpretation. Moreover, no one has yet identified any specific behaviors that mammalian cortical pain regions make possible that are absent in fish.


Activity Patterns, Home Range, And Microhabitat Selection Of A Terrestrial Turtle (Rhinoclemmys Rubida Perixantha) In A Tropical Dry Forest, Taggert G. Butterfield Jan 2016

Activity Patterns, Home Range, And Microhabitat Selection Of A Terrestrial Turtle (Rhinoclemmys Rubida Perixantha) In A Tropical Dry Forest, Taggert G. Butterfield

All Master's Theses

Turtles are in trouble worldwide, with nearly half recognized by the International Union for Conservation of Nature (IUCN) as needing special protection. The Eurasian pond and Neotropical wood turtles of the family Geoemydidae are the most diverse turtles and comprise ¼ of all turtle species yet basic information on their natural history is lacking. Moreover, seasonal tropical dry forest (SDTF), where many geoemydids exist, is considered the most endangered ecosystem in the world. We investigated the activity patterns, home range size, and microhabitat selection of the Mexican Spotted Wood Turtle (Rhinoclemmys rubida perixantha) in its SDTF habitat by …


Population Genetic Structure Of Necturus Maculosus In Central And Eastern Kentucky, Mason Owen Murphy Jan 2016

Population Genetic Structure Of Necturus Maculosus In Central And Eastern Kentucky, Mason Owen Murphy

Theses and Dissertations--Biology

Population structure is influenced by extrinsic factors, such as landscape architecture and dispersal barriers. Lotic network architecture is known to constrain ecological, demographic and evolutionary processes, including population genetic structure. I assessed the population structure of a widespread aquatic salamander, Necturus maculosus, across three river basins in central and eastern Kentucky. I examined the role of network architecture, anthropogenic barriers, and spatial scale on patterns of population structure. I also provided a review of N. maculosus capture methods and offer an improved trap design. I identified significant structuring between the combined Licking/Kinniconick basin and the Kentucky River basin, with …


Mediating Claims Through Critical Anthropomorphism, Gordon Burghardt Jan 2016

Mediating Claims Through Critical Anthropomorphism, Gordon Burghardt

Animal Sentience

Key’s (2016) discussion of his claim that fish do not feel pain ignores the history of attempts to study the attribution of mental states to other species. Although willing to accept that mammals feel pain, Key claims that fish lack the mammalian neural mechanisms underlying pain and are unconscious of their experiences. Consequently, we do not need to be overly concerned about fishing practices that would otherwise be viewed as painful. Key uses a flawed anthropomorphic lens. All attributions of mental events to organisms other than oneself involve inferences derived from anthropomorphic processes through which we process physiological and behavioral …


Pain And Other Feelings In Humans And Animals, Antonio Damasio, Hanna Damasio Jan 2016

Pain And Other Feelings In Humans And Animals, Antonio Damasio, Hanna Damasio

Animal Sentience

Evidence from neuroanatomy, neurophysiology, and neuropsychology suggests that the experience of feelings in humans does not depend exclusively on structures of the cerebral cortex. It does not seem warranted to deny the possibility of feeling in animals on the grounds that their cerebral cortices are not comparable to those of humans.


Falsifying The Null Hypothesis That “Fish Do Not Feel Pain", Brian Key Jan 2016

Falsifying The Null Hypothesis That “Fish Do Not Feel Pain", Brian Key

Animal Sentience

The reader of Animal Sentience may surmise that because the weight of the commentaries on my target article, “Why fish do not feel pain,” is leaning towards not supporting my argument, it follows that the premise "fish do not feel pain" is incorrect. However, science does not prevail by popular opinion. History is plagued with numerous (and often widely accepted) examples of biological phenomena being explained by mysterious forces. In the absence of a mechanistic understanding, the many different guises of vitalism (the principle that life involves a vital energy) are often invoked to explain the unknown. Spurious …