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Full-Text Articles in Terrestrial and Aquatic Ecology

To Preserve Or To Conserve?, Liv Baker Jan 2019

To Preserve Or To Conserve?, Liv Baker

Animal Sentience

Treves et al. propose the notion of trusteeship to help meet our responsibility to nature and individual animals, their homes, cultures, and societies. This proposal is grounded in a real-world framework that reveals how conservation has become distorted by anthropocentrism, human exceptionalism, and ethical hypocrisy.


The Intrinsic Value Of Nature, Joanna E. Lambert Jan 2019

The Intrinsic Value Of Nature, Joanna E. Lambert

Animal Sentience

Treves et al. explain the need to preserve the rights of nonhuman species, human youth, and future generations. Although conservation biology has claimed to have an intrinsic valuation ethic since its inception in the 1980s, many aspects of the field have taken a decidedly anthropocentric and instrumentalist trajectory. This has important consequences for conservation-related policy and practice at all scales: local, regional, and global.


Are Our Ideas About Octopus Life Too Anthropomorphic To Help?, Kenneth J. Aitken Jan 2019

Are Our Ideas About Octopus Life Too Anthropomorphic To Help?, Kenneth J. Aitken

Animal Sentience

Our understanding of the evolution and ontogeny of the octopus and its behavioral repertoire in its natural habitat remains rudimentary at best. There are many parallels, but also just as many differences from our models of human biology and ontogeny, making anthropocentric generalizations of limited use in explanation.


A Behavior-Analytic Approach To Understanding Octopus “Mind”, Lindsay R. Mehrkam Jan 2019

A Behavior-Analytic Approach To Understanding Octopus “Mind”, Lindsay R. Mehrkam

Animal Sentience

Mather makes a convincing case for octopus sentience based on a lot of evidence of their complex learning capabilities. It should follow from Mather’s findings that these intelligent invertebrates are worthy of welfare considerations, just as vertebrate species with similar capabilities are. I provide a complementary environment-behavior analysis of how we might understand the world of the octopus more straightforwardly, borrowing from Mather’s examples, to show how to promote opportunities for complex learning and species-typical behaviors in the octopus.


Post-Darwin Skepticism And Run-Of-The-Mill Suicide, John Hadley Jan 2018

Post-Darwin Skepticism And Run-Of-The-Mill Suicide, John Hadley

Animal Sentience

Peña-Guzmán’s depiction of the opponent of animal suicide as a conservative is a straw man. It is possible to accept that animals are self-conscious and reflexive yet still reject the view that they have the mental wherewithal to commit run-of-the-mill suicide. That animal behaviour can be positioned on a continuum of self-destructive behaviour does not establish that animals can intentionally kill themselves.


An Adaptationist Perspective On Animal Suicide, Timothy P. Racine Jan 2018

An Adaptationist Perspective On Animal Suicide, Timothy P. Racine

Animal Sentience

Peña-Guzmán’s discussion of suicide in nonhuman animals has broad implications. In this commentary, I focus on the logical relation between suicide and intention. Proximate cause must be distinguished from ultimate function in explanations of suicide. I briefly discuss two adaptationist accounts of suicidal behavior.


Lessons From Chimpanzee Sign Language Studies, Mary Lee Jensvold Jan 2018

Lessons From Chimpanzee Sign Language Studies, Mary Lee Jensvold

Animal Sentience

Claims are often made about behaviors being unique to humans; the evidence usually shows they are not. Sign language studies on chimpanzees may provide a useful model for comparative studies of suicide. A productive approach to comparative studies is to focus on observable behaviors rather than getting lost in the pitfalls of vague definitions and changing measures.


Can Nondolphins Commit Suicide?, David M. Peña-Guzmán Jan 2018

Can Nondolphins Commit Suicide?, David M. Peña-Guzmán

Animal Sentience

This Response addresses the scientific and philosophical criticisms of my 2017 target article “Can nonhuman animals commit suicide?” It defends my key claims and explores topics (such as animal judgment, animal theory of mind, and the evolution of suicide) that did not appear in the original article. It also points out areas in which further research is needed and concludes that we should be wary of accusations of “anthropomorphism” in debates about animal suicide.


Animal Suicide: Evolutionary Continuity Or Anthropomorphism?, Antonio Preti Jan 2018

Animal Suicide: Evolutionary Continuity Or Anthropomorphism?, Antonio Preti

Animal Sentience

Evolutionary processes are characterized by both continuity and discontinuity. Evidence on suicide in nonhuman animals is faint and often rests on the metaphorical or anthropomorphic use of the term. Suicidal behavior might be an evolutionary jump relatively recent in our species: a byproduct of living in groups of people who are not as closely related genetically as in social groups of nonhuman mammals.


Roots Of Self-Preservation Failure In Animal Behavior, Denys Decatanzaro Jan 2018

Roots Of Self-Preservation Failure In Animal Behavior, Denys Decatanzaro

Animal Sentience

Affective variation from euphoria to dysphoria, best understood in humans, is also found in the behavior and neurochemistry of many other mammals. Suicide in humans typically occurs in highly dysphoric and despondent individuals. Self-injurious behavior has been observed in dysphoric and despondent nonhuman primates. In humans, suicide is facilitated by a highly-evolved neocortex giving rise to behavioral flexibility and culture. As Peña-Guzmán indicates, some other mammals also have elaborate neocortices and the capacity for cognitive insight, particularly apes, delphinids, and whales. Suicide is most likely to occur in species where individuals live in stable groups of highly interdependent kin.


Animal Suicide And "Anthropodenial", Ryan Hediger Jan 2018

Animal Suicide And "Anthropodenial", Ryan Hediger

Animal Sentience

Increasing understanding of the impressive cognitive and social capacities of nonhuman animals suggests the possibility that they may sometimes commit suicide. Such notions tend to be dismissed as “anthropomorphism.” That interpretive hazard, I argue, must be weighed against the opposite hazard of “anthropodenial” — “the a priori rejection of shared characteristics between humans and animals” (de Waal 2006). If animals do commit suicide, how often is it motivated precisely by the impact of humans on animal life?


Continuum And Temporality, Gerard Kuperus Jan 2018

Continuum And Temporality, Gerard Kuperus

Animal Sentience

I fully support the continuum proposed in the target article and argue along the same lines that we should be suspicious of drawing any strict borders between human and non-human animals. Since we can say very little with absolute certainty about human intentions regarding suicide, we have no certainty about the intentions of non-human animals. Although I am very sympathetic to Peña-Guzmán’s overall argument, I suggest that time could be taken into consideration as well.


Thinking About Thinking Chickens, Lori Marino Jan 2018

Thinking About Thinking Chickens, Lori Marino

Animal Sentience

This response focuses on three major conceptual threads that run through the peer commentary on my target article: (1) how the use of chickens influences our views of them, (2) whether education is effective, and (3) what components of chicken psychology are most relevant to understanding who chickens are.



Dogs Aren’T Jealous – They Are Just Asking For Accurate Information, Karen L. Overall Jan 2018

Dogs Aren’T Jealous – They Are Just Asking For Accurate Information, Karen L. Overall

Animal Sentience

Awake fMRI offers us a unique opportunity to view and understand how dogs see the world and use the information in it. Given the limitations of behavioral assays and the small sample sizes inherent in these studies, labeling of patterns of canine behaviors using pop psychology terms may actually interfere with our understanding of canine brains and obscure for us a more parsimonious but exciting interpretation of canine behavior. We should use this window into how dogs think wisely.



Chicken Minds And Moral Standing, Kristin Andrews Jan 2018

Chicken Minds And Moral Standing, Kristin Andrews

Animal Sentience

Some of the cognitive traits that Marino reviews are not in themselves relevant to ethics, either for chickens or human infants, but affective traits are, among them desires.


Lessons From Behaviour For Brain Imaging, Carolyn J. Walsh Jan 2018

Lessons From Behaviour For Brain Imaging, Carolyn J. Walsh

Animal Sentience

Integrating physiological and behavioural arousal with social context is fundamental to understanding affect in dogs. Cook et al. (2018) have made a worthy start towards illuminating the neural basis of dog affect underlying resource loss. However, their study depends on retrospective behaviour reports versus direct testing, and an interpretation of differential neural activation that is based on too few dogs. Research groups conducting canine brain-imaging work might: (1) consider collaborative approaches to augment sample sizes and replicability, and (2) take a recent lesson from dog behavioural research regarding a more cautious approach to applying functional labels to physiological and/or behavioural …


The Degeneracy Of Behavior And The Rise Of Neuroimaging To Measure Affective States In Dogs, Peter F. Cook, Gregory S. Berns Jan 2018

The Degeneracy Of Behavior And The Rise Of Neuroimaging To Measure Affective States In Dogs, Peter F. Cook, Gregory S. Berns

Animal Sentience

It is gratifying and significant that so many scientists from diverse fields are arguing in-depth regarding a particularly complex set of social emotions in a non-human animal. Emotions play a fundamental role in decision making and information processing. Neuroimaging is important in understanding the cognitive and emotional worlds of non-human animals and can help measure covert emotions lacking clear behavioral correlates. Various experimental approaches could clarify the relative importance of attachment and aggression in jealousy and whether the phenomenon we measured is more akin to human envy or jealousy. Reverse inference from amygdala activation is probably justified because behavior is …


Finding The Green-Eyed Monster In The Brain Of A Dog, Peter Singer Jan 2018

Finding The Green-Eyed Monster In The Brain Of A Dog, Peter Singer

Animal Sentience

That dogs show behavior suggestive of jealousy has long been known and has been demonstrated under controlled conditions. Cook et al. have now shown arousal in the amygdala when dogs see a caregiver feeding another dog. This finding has ethical significance in two respects. First, the consideration shown by the investigators for the welfare of their experimental subjects sets an example for other researchers using animals. Second, the greater understanding of the emotional lives of animals should lead to more concern for their needs.


What Can The Social Emotions Of Dogs Teach Us About Human Emotions?, Dean Mobbs Jan 2018

What Can The Social Emotions Of Dogs Teach Us About Human Emotions?, Dean Mobbs

Animal Sentience

It has long been believed that social emotions such as guilt and jealousy are only expressed in humans. In the case of jealousy, its adaptive value has been linked to the prevention of sexual infidelity or fairness. So why would dogs feel jealousy? I suggest that understanding how social emotions have been bred into dogs can help us understand our own emotions, including their functionality — and potentially their mechanisms.


What Would We Like To Know By Imaging The Brains Of Dogs?, Ralph Adolphs Jan 2018

What Would We Like To Know By Imaging The Brains Of Dogs?, Ralph Adolphs

Animal Sentience

Using fMRI to study emotions in animals is important, fascinating, and fraught with methodological and conceptual problems. Cook et al. are doing it, and there is no question that they and others will be doing it better and better as time goes on. Where will this lead us? What could fMRI in principle tell us about the minds of nonhuman animals?


Sentience, The Final Frontier...., Shelley Adamo Jan 2018

Sentience, The Final Frontier...., Shelley Adamo

Animal Sentience

Arguments for fish sentience have difficulty with the philosophical zombie problem. Progress in AI has shown that complex learning, pain behavior, and pain as a motivational drive can be emulated by robots without any internal subjective experience. Therefore, demonstrating these abilities in fish does not necessarily demonstrate that fish are sentient. Further evidence for fish sentience may come from optogenetic studies of neural networks in zebrafish. Such studies may show that zebrafish have neural network patterns similar to those that correlate with sentience in humans. Given the present uncertainty regarding sentience in fish, caution should be applied regarding the precautionary …


Sentience: All Or None Or Matter Of Degree?, Loren Martin, Robert Gerlai Jan 2018

Sentience: All Or None Or Matter Of Degree?, Loren Martin, Robert Gerlai

Animal Sentience

The question of whether fish feel pain is muddied by anthropomorphic thinking. Comparing biological phenomena in two species should be informed by the criteria for good animal models: face validity, construct validity and predictive validity. Viewed through this lens, we argue that fish do feel pain and may possess some level of sentience. Evolutionary relatedness, hence similarities and differences between species (fish and humans in this case), are not about black vs. white but about shades of grey.


Fish Sentience, Consciousness, And Ai, Ila France Porcher Jan 2018

Fish Sentience, Consciousness, And Ai, Ila France Porcher

Animal Sentience

The systematic criticism of articles providing evidence that fish and invertebrates can feel pain is discussed. Beliefs are known to be stronger than evidence in the human mind, and could generate this outcry, while from another perspective, the criticisms appear as a territorial move by fishermen against a perceived threat to their domain. The scientific inconsistency in which consciousness is granted to machines but not to fish and invertebrates, purely due to political bias, is pointed out. No basis exists for denying sentience to any life form as long as science is ignorant of the nature and source of consciousness.


The Human Nervous System Is Not The Gold Standard For Pain, Riccardo Manzotti Jan 2018

The Human Nervous System Is Not The Gold Standard For Pain, Riccardo Manzotti

Animal Sentience

The basis of pain could be the causal nexus between one’s phylogenetic/ontogenetic history and one’s behavior. It might turn out that the neural implementation is immaterial to the instantiation of pain. Widely different neural structures may token the same pain-type, and nearly identical neural structures may token different types.


Time To (Finally) Acknowledge That Fish Have Emotionality And Pain, Konstantin A. Demin, Anton M. Lakstygal, Allan V. Kalueff Jan 2018

Time To (Finally) Acknowledge That Fish Have Emotionality And Pain, Konstantin A. Demin, Anton M. Lakstygal, Allan V. Kalueff

Animal Sentience

The increasing work using fish as a model organism calls for a better understanding of their sentience. While growing evidence suggests that pain and emotionality exist in zebrafish, many deniers continue to ignore the evidence. Here we revisit the main conceptual breakthroughs in the field that argue clearly for pain and emotionality. We call for an end to denial and a focus on studying the mechanisms of fish pain and emotionality, and their translational relevance to human conditions.


Human And Nonhuman Animals: Equals In Uniqueness, Uta Maria Juergens Jan 2018

Human And Nonhuman Animals: Equals In Uniqueness, Uta Maria Juergens

Animal Sentience

Chapman & Huffman attack the idea that humans are unique and therefore superior to nonhuman beings. They call on humankind to use their “intellect to change [their] actions.” I am in full accord with their line of thought, which differentiates uniqueness from superiority and enjoins humans to take responsible action. I suggest, however, that humans are unique with regard to cognitive fluidity. The same conclusions can be reached via another argument based on human uniqueness.


Can They Suffer?, Todd K. Shackelford Jan 2018

Can They Suffer?, Todd K. Shackelford

Animal Sentience

We should treat sentient nonhuman animals as worthy of moral consideration, not because we share an evolutionary history with them, but because they can suffer. As Chapman & Huffman (2018) argue, humans are not uniquely disconnected from other species. We should minimize the suffering we inflict on sentient beings — whether human or nonhuman — not because they, too, are tool-makers or have sophisticated communication systems, but because they, too, can suffer, and suffering is bad.


Is Superiority A Necessary Aspect Of Cruelty?, William H. Edmondson Jan 2018

Is Superiority A Necessary Aspect Of Cruelty?, William H. Edmondson

Animal Sentience

Chapman & Huffman argue that humans inflict cruelty without apparent concern because of their categorization of the victims as inferior. The supposed inferiority of non-human animals can be argued against on the basis of documentation and analysis of behaviour. Humans continue to inflict cruelty on their own and other species. It is not obvious that a sense of superiority is a necessary aspect of cruel behaviour. Nor is it obvious that further enlightenment regarding the cognitive status of non-humans will diminish cruelty.


Researchers, Not Dogs, Lack Control In An Experiment On Jealousy, Jennifer Vonk Jan 2018

Researchers, Not Dogs, Lack Control In An Experiment On Jealousy, Jennifer Vonk

Animal Sentience

Cook and colleagues (2018) have developed a clever method to measure fMRI in awake dogs in response to a number of interesting stimuli. As a result, they are able to determine neural correlates of observable behavior. They report that dogs may experience something akin to jealousy because they show greater amygdala activation in response to food being given to a fake dog versus food being placed in a bucket. However, several critical controls are missing which prevent the authors from being able to speak of jealousy.


Fill-In-The-Blank-Emotion In Dogs? Evidence From Brain Imaging, Alexandra Horowitz, Becca Franks, Jeff Sebo Jan 2018

Fill-In-The-Blank-Emotion In Dogs? Evidence From Brain Imaging, Alexandra Horowitz, Becca Franks, Jeff Sebo

Animal Sentience

What is needed to make meaningful claims about an animal’s capacity for subjective experience? Cook et al. (2018) attempt to study jealousy in dogs by placing them in a particular context and then seeing whether they display a particular brain state. We argue that this approach to studying jealousy falls short for two related reasons. First, the relationship between jealousy and the selected context is unclear. Second, the relationship between jealousy and the selected brain state (indeed, any single brain state) is unclear. These and other issues seriously limit what this study can show. It is important not to see …