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Ethology

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https://www.readbyqxmd.com/read/28638991/integrating-tinbergen-s-inquiries-mimicry-and-play-in-humans-and-other-social-mammals
#1
Elisabetta Palagi, Chiara Scopa
Visual signals convey emotions and intentions between individuals. Darwin underlined that human facial expressions represent a shared heritage between our species and many other social mammals. Social play is a fertile field to examine the role and the potential communicative function of facial expressions. The relaxed open-mouth (or play face) is a context-specific playful expression, which is widespread in human and non-human mammals. Here, we focus on playful communication by applying Tinbergen's four areas of inquiry: proximate causation, ontogeny, function, and evolution...
June 21, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28637956/cd36-involvement-in-the-olfactory-perception-of-oleic-aldehyde-an-odour-active-volatile-compound-in-mice
#2
Shinhye Lee, Tsuzuki Satoshi, Takahiko Amitsuka, Daisaku Masuda, Shizuya Yamashita, Kazuo Inoue
Cluster of differentiation 36 (CD36) is a broadly expressed transmembrane receptor that has multiple ligands. It has been found to occur abundantly on the surface of the olfactory epithelium in mice and postulated to play a role in mammalian olfaction. However, there have been no ethological analyses of the mammalian behaviour showing CD36 involvement in the olfactory perception of a distinct odour-active volatile compound. In this study, we aimed to assess whether mammals perceive oleic aldehyde, an odour-active volatile that serves as a potential CD36 ligand, and if so, whether CD36 is involved in the sensing by following measurements using CD36-knockout mice and their wild-type littermates...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28622973/maternal-programming-of-sex-specific-responses-to-predator-odor-stress-in-adult-rats
#3
Sophie St-Cyr, Sameera Abuaish, Shathveekan Sivanathan, Patrick O McGowan
Prenatal stress mediated through the mother can lead to long-term adaptations in stress-related phenotypes in offspring. This study tested the long-lasting effect of prenatal exposure to predator odor, an ethologically relevant and psychogenic stressor, in the second half of pregnancy. As adults, the offspring of predator odor-exposed mothers showed increased anxiety-like behaviors in commonly used laboratory tasks assessing novelty-induced anxiety, increased defensive behavior in males and increased ACTH stress reactivity in females in response to predator odor...
June 20, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28614436/social-instigation-and-repeated-aggressive-confrontations-in-male-swiss-mice-analysis-of-plasma-corticosterone-crf-and-bdnf-levels-in-limbic-brain-areas
#4
Paula Madeira Fortes, Lucas Albrechet-Souza, Mailton Vasconcelos, Bruna Maria Ascoli, Ana Paula Menegolla, Rosa Maria M de Almeida
Introduction: Agonistic behaviors help to ensure survival, provide advantage in competition, and communicate social status. The resident-intruder paradigm, an animal model based on male intraspecific confrontations, can be an ethologically relevant tool to investigate the neurobiology of aggressive behavior. Objectives: To examine behavioral and neurobiological mechanisms of aggressive behavior in male Swiss mice exposed to repeated confrontations in the resident intruder paradigm...
June 12, 2017: Trends in Psychiatry and Psychotherapy
https://www.readbyqxmd.com/read/28599071/predator-odor-evokes-sex-independent-stress-responses-in-male-and-female-wistar-rats-and-reduces-phosphorylation-of-cyclic-adenosine-monophosphate-response-element-binding-protein-creb-in-the-male-but-not-the-female-hippocampus
#5
Damek Homiack, Emma O'Cinneide, Sema Hajmurad, Brett Barrileaux, Mary Stanley, Michael R Kreutz, Laura Schrader
Post-traumatic stress disorder (PTSD) is characterized by memory disturbances following trauma. Acute predator threat has emerged as an ethological model of PTSD, yet the effects of predator odor on signaling cascades associated with long-term memory remain poorly understood. In this study, we exposed male and female Wistar rats to the synthetic predator odor 2,5-dihydro-2,4,5-trimethylthiazoline (TMT) to assess behavioral and physiological responses as well as rapid modulation of signal transduction cascades associated with learning and memory in the male and female hippocampus...
June 9, 2017: Hippocampus
https://www.readbyqxmd.com/read/28591669/bupropion-induces-social-anxiety-in-adolescent-mice-influence-of-housing-conditions
#6
Carmen Gómez, Rosa Redolat, Carmen Carrasco
BACKGROUND: The antidepressant bupropion has received increasing attention as a pharmacological tool to treat addiction although little is known about its effects on social behaviour in adolescents. The present study aimed to evaluate if environmental housing conditions influence bupropion's actions on social behaviour of adolescent mice. METHODS: Mice were either group- or individually housed for 2-weeks and then randomly divided into 2 cohorts: half of the mice remained in the initial housing condition and the other half were changed to isolated conditions for further 2-weeks...
March 22, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28586586/comparative-analysis-of-anterior-knee-pain-in-transpatellar-and-medial-parapatellar-tendon-approaches-in-tibial-interlocking-nailing
#7
Saeed Ahmad, Ashfaq Ahmed, Latif Khan, Shahzad Javed, Naeem Ahmed, Amer Aziz
OBJECTIVE: Anterior knee pain is the most common complaint after intramedullary nail of the tibia. The incidence of anterior knee pain ranges from 10-86% and the exact ethology is unclear. Transpatellar tendon approach is commonly used for tibial intramedullary interlocking nailing but it can also be done through medial parapatellar tendon approach. The objective of the study was to compare post-operative anterior knee pain after intramedullary nailing technique by transpatellar approach compared to medial parapatellar approach...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28582758/rheumatoid-arthritis-recent-advances-on-its-etiology-role-of-cytokines-and-pharmacotherapy
#8
REVIEW
Javaid Alam, Ibrahim Jantan, Syed Nasir Abbas Bukhari
An autoimmune disease is defined as a clinical syndrome resulted from an instigation of both T cell and B cell or individually, in the absence of any present infection or any sort of distinguishable cause. Clonal deletion of auto reactive cells remains the central canon of immunology for decades, keeping the role of T cell and B cell aside, which are actually the guards to recognize the entry of foreign body. According to NIH, 23.5 million Americans are all together affected by these diseases. They are rare, but with the exception of RA...
June 2, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28570562/anomalous-diffusion-on-the-servosphere-a-potential-tool-for-detecting-inherent-organismal-movement-patterns
#9
Naohisa Nagaya, Nobuaki Mizumoto, Masato S Abe, Shigeto Dobata, Ryota Sato, Ryusuke Fujisawa
Tracking animal movements such as walking is an essential task for understanding how and why animals move in an environment and respond to external stimuli. Different methods that implemented image analysis and a data logger such as GPS have been used in laboratory experiments and in field studies, respectively. Recently, animal movement patterns without stimuli have attracted an increasing attention in search for common innate characteristics underlying all of their movements. However, it is difficult to track the movements in a vast and homogeneous environment without stimuli because of space constraints in laboratories or environmental heterogeneity in the field, hindering our understanding of inherent movement patterns...
2017: PloS One
https://www.readbyqxmd.com/read/28556816/salmonid-jumping-and-playing-potential-cultural-and-welfare-implications
#10
Robert M Fagen
Salmonids of several species and other fishes can jump into the air from the water. This behavior has been used in net pen culture applications to control parasitic sea lice. The reasons that salmonids jump remain a topic for speculation. Research on these behaviors has focused on Atlantic salmon in net pen culture in Northwest Europe. Jumping in salmonids is a heterogeneous behavioral category with diverse functional outcomes. Additional research is needed from broad perspectives spanning indigenous and institutional science, cultural wisdom, and ethological direct observation...
May 30, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28556521/the-need-to-implement-the-landscape-of-fear-within-rodent-pest-management-strategies
#11
Inge M Krijger, Steven R Belmain, Grant R Singleton, Peter W G Groot Koerkamp, Bastiaan G Meerburg
Current reactive pest management methods have serious drawbacks such as the heavy reliance on chemicals, emerging genetic rodenticide resistance, and high secondary exposure risks. Rodent control needs to be based on pest-species ecology and ethology to facilitate development of ecologically-based rodent management (EBRM). An important aspect of EBRM is a strong understanding of rodent pest species ecology, behaviour, and spatiotemporal factors. Gaining insight in the behaviour of pest-species is a key aspect of EBRM...
May 29, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28554249/suppression-of-asparaginyl-endopeptidase-attenuates-breast-cancer-induced-bone-pain-through-inhibition-of-neurotrophin-receptors
#12
Peng Yao, Yuanyuan Ding, Zhenkai Han, Ying Mu, Tao Hong, Yongqiang Zhu, Hongxi Li
Objective Cancer-induced bone pain is a common clinical problem in breast cancer patients with bone metastasis. However, the mechanisms driving cancer-induced bone pain are poorly known. Recent studies show that a novel protease, asparaginyl endopeptidase (AEP) plays crucial roles in breast cancer metastasis and progression. We aim to determine the functions and targeted suppress of AEP in a mouse model of breast cancer-induced bone pain. Methods Breast cancer cells with AEP knocked-down or overexpression were constructed and implanted into the intramedullary space of the femur to induce pain-like behavior in mice...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28528143/intergenerational-accumulation-of-impairments-in-maternal-behavior-following-postnatal-social-stress
#13
B C Nephew, L M Carini, S Sallah, C Cotino, R A S Alyamani, F Pittet, S Bradburn, C Murgatroyd
Early adversity such as depressed maternal care can have long-term physiological and behavioral effects on offspring and future generations. Exposure to chronic social stress (CSS), an ethologically model of postpartum depression and anxiety, during lactation impairs maternal care and exerts similar effects on the F1 dam offspring of the stressed F0 dams. These changes associate with increased corticosterone and neuroendocrine alterations. CSS F2 offspring further display decreased social behavior as juveniles and adults and decreased basal levels of corticosterone...
May 13, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28507154/information-socialtaxis-and-efficient-collective-behavior-emerging-in-groups-of-information-seeking-agents
#14
Ehud D Karpas, Adi Shklarsh, Elad Schneidman
Individual behavior, in biology, economics, and computer science, is often described in terms of balancing exploration and exploitation. Foraging has been a canonical setting for studying reward seeking and information gathering, from bacteria to humans, mostly focusing on individual behavior. Inspired by the gradient-climbing nature of chemotaxis, the infotaxis algorithm showed that locally maximizing the expected information gain leads to efficient and ethological individual foraging. In nature, as well as in theoretical settings, conspecifics can be a valuable source of information about the environment...
May 30, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28503035/current-trends-in-canine-problem-solving-and-cognition
#15
Ádám Miklósi, Enikő Kubinyi
Dogs have occupied a central place in modern comparative cognition, partly because of their specific past and present relationship with humans. Over the years, we have gained insights about the functioning of the dog's mind, which has helped us to understand how dogs' problem-solving abilities differ from those present in related species such as the wolf. Novel methodologies are also emerging that allow for the study of neural and genetic mechanisms that control mental functions. By providing an overview from an ethological perspective, we call for greater integration of the field and a better understanding of natural dog behavior as a way to generate scientific hypotheses...
October 1, 2016: Current Directions in Psychological Science
https://www.readbyqxmd.com/read/28458202/toxicity-of-%C3%AE-fe2o3-nanoparticles-to-artemia-salina-cysts-and-three-stages-of-larvae
#16
Chunjie Wang, Huali Jia, Lili Zhu, Hui Zhang, Yunsheng Wang
Artemia salina cysts (capsulated and decapsulated) and larvae (instar I, II and III) were exposed to α-Fe2O3 nanoparticles (α-Fe2O3-NPs) to evaluate the effects on marine ecosystems. Hatchability, mortality and a number of ethological, morphological and biochemical parameters were selected as end-points to define the toxic responses. Results indicate that the hatchability of capsulated and decapsulated cysts was significantly decreased (p<0.01) following exposure to 600mg/L at 12, 18, 24 and 36h. Both increases of mortality and decreases of swimming speed were shown concentration-dependent manners...
November 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28450152/early-deprivation-increases-high-leaning-behavior-a-novel-anxiety-like-behavior-in-the-open-field-test-in-rats
#17
Hiroshi Kuniishi, Satoshi Ichisaka, Miki Yamamoto, Natsuko Ikubo, Sae Matsuda, Eri Futora, Riho Harada, Kohei Ishihara, Yoshio Hata
The open field test is one of the most popular ethological tests to assess anxiety-like behavior in rodents. In the present study, we examined the effect of early deprivation (ED), a model of early life stress, on anxiety-like behavior in rats. In ED animals, we failed to find significant changes in the time spent in the center or thigmotaxis area of the open field, the common indexes of anxiety-like behavior. However, we found a significant increase in high-leaning behavior in which animals lean against the wall standing on their hindlimbs while touching the wall with their forepaws at a high position...
April 24, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28444848/biologically-meaningful-scents-a-framework-for-understanding-predator-prey-research-across-disciplines
#18
Michael H Parsons, Raimund Apfelbach, Peter B Banks, Elissa Z Cameron, Chris R Dickman, Anke S K Frank, Menna E Jones, Ian S McGregor, Stuart McLean, Dietland Müller-Schwarze, Elisa E Sparrow, Daniel T Blumstein
Fear of predation is a universal motivator. Because predators hunt using stealth and surprise, there is a widespread ability among prey to assess risk from chemical information - scents - in their environment. Consequently, scents often act as particularly strong modulators of memory and emotions. Recent advances in ecological research and analytical technology are leading to novel ways to use this chemical information to create effective attractants, repellents and anti-anxiolytic compounds for wildlife managers, conservation biologists and health practitioners...
April 26, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28441117/sexual-dimorphism-of-parental-care-from-genes-to-behavior
#19
Noga Zilkha, Niv Scott, Tali Kimchi
Parental care is found in species across the animal kingdom, from small insects to large mammals, with a conserved purpose of increasing offspring survival. Yet enormous variability exists between different species and between the sexes in the pattern and level of parental investment. Here, we review the literature on the neurobiological mechanisms underlying maternal and paternal care, especially in rodents, and discuss the relationship between sex differences in behavior and sexual dimorphism in the brain...
April 24, 2017: Annual Review of Neuroscience
https://www.readbyqxmd.com/read/28420788/reconstructing-the-spectrotemporal-modulations-of-real-life-sounds-from-fmri-response-patterns
#20
Roberta Santoro, Michelle Moerel, Federico De Martino, Giancarlo Valente, Kamil Ugurbil, Essa Yacoub, Elia Formisano
Ethological views of brain functioning suggest that sound representations and computations in the auditory neural system are optimized finely to process and discriminate behaviorally relevant acoustic features and sounds (e.g., spectrotemporal modulations in the songs of zebra finches). Here, we show that modeling of neural sound representations in terms of frequency-specific spectrotemporal modulations enables accurate and specific reconstruction of real-life sounds from high-resolution functional magnetic resonance imaging (fMRI) response patterns in the human auditory cortex...
May 2, 2017: Proceedings of the National Academy of Sciences of the United States of America
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