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Behavioural Processes

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https://www.readbyqxmd.com/read/27919782/understanding-zebrafish-cognition
#1
REVIEW
Darya A Meshalkina, Marina N Kizlyk, Elana V Kysil, Adam D Collier, David J Echevarria, Murilo S Abreu, Leonardo J G Barcellos, Cai Song, Allan V Kalueff
Zebrafish (Danio rerio) are rapidly becoming a popular model organism in translational and cognitive neuroscience research. Both larval and adult zebrafish continue to increase our understanding of cognitive mechanisms and their genetic and pharmacological modulation. Here, we discuss the developing utility of zebrafish in understanding cognitive phenotypes and their deficits, relevant to a wide range human brain disorders. We also discuss the potential of zebrafish models for high-throughput genetic mutant and small molecule screening (e...
December 2, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27919781/budgie-in-the-mirror-an-exploratory-analysis-of-social-behaviors-and-mirror-use-in-the-budgerigar-melopsittacus-undulatus
#2
Daniel P Buckley, Michael R Duggan, Matthew J Anderson
Despite their prevalent use amongst avian species, particularly in Budgerigars, the relationship between mirror use and social behaviors is in need of elucidation. After establishing social behavior measures (e.g., agonistic and pair-bond data) in a colony of Budgerigars, mirrors were introduced and subsequent use was documented. Results illustrated a significant relationship between mirror use and pair-bonds, such that mirror use increased with increasing pair-bond strength. The authors posit that individual differences in gregariousness may best account for the obtained results, with certain birds seeking more social stimulation than others, whether it be from a pair-bond or from its own reflected mirror image...
December 2, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27913165/larger-females-are-choosier-in-the-gray-treefrog-hyla-versicolor
#3
Michael C Kuczynski, Thomas Getty, Eben Gering
Individual variation in female mate choice has important implications for sexual trait evolution and the maintenance of phenotypic diversity. In this study we examined several potential drivers of individual variation in female choosiness for the well-studied, energetically expensive courtship signal of male gray treefrogs, Hyla versicolor. Specifically, we investigated the relationship between female choosiness and other female traits (female body size, physical condition, and age) using a costly choice playback experiment where females traveled different simulated distances to reach attractive mates...
November 29, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27908665/diffuse-resistance-courtship-in-the-scorpion-rhopalurus-rochai-scorpiones-buthidae
#4
Shayanne Chantall-Rocha, Hilton F Japyassú
Male-female courtship signals are frequently subject to arms races, with patterns of behaviour evolving reciprocally to manipulate the reproductive output. Female resistance should be particularly effective when asymmetrical offspring care occurs under low and unpredictable resource distribution, because this would increase maternal costs. Our hypothesis is that under these conditions females will evolve diffuse mating strategies to avoid predictable exploitation by male optimal counter tactics. Mating in scorpions is a complex process, and female resistance occurs through specific behaviours...
November 28, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27908664/preference-for-western-diet-coadapts-in-high-runner-mice-and-affects-voluntary-exercise-and-spontaneous-physical-activity-in-a-genotype-dependent-manner
#5
Wendy Acosta, Thomas H Meek, Heidi Schutz, Elizabeth M Dlugosz, Theodore Garland
Do animals evolve (coadapt) to choose diets that positively affect their performance abilities? We addressed this question from a microevolutionary perspective by examining preference for Western diet (WD: high in fat and sugar, but lower in protein) versus standard rodent chow in adults of both sexes from 4 lines of mice selectively bred for high levels of voluntary wheel running (High Runner or HR lines) and 4 non-selected control (C) lines. We also assessed whether food preference or substitution affects physical activity (wheel running and/or spontaneous physical activity [SPA] in the attached home cages)...
November 28, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27908663/communal-nesting-in-the-garden-dormouse-eliomys-quercinus
#6
Adrià Viñals, Sandro Bertolino, José Antonio Gil-Delgado
Communal nesting has been described in many rodents including some dormouse species. In this study, we report the existence of this reproductive strategy in the garden dormouse Eliomys quercinus. Data was recorded by checking natural nests and nest-boxes from 2003 to 2013 in SE Spain. Pups and adults dormice found in nests were captured and marked. Overall, 198 nests were found: 161 (81.31%) were singular nests and 37 (18.69%) were communal nests. Communal nests were composed by different combinations of one up to three females together with one up to three different size litters...
November 28, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27908662/too-cool-symbolic-but-not-iconic-stimuli-impair-4-year-old-children-s-performance-on-the-delay-of-gratification-choice-paradigm
#7
Lisa G Labuschagne, Taylor-Jane Cox, Kaitlyn Brown, Damian Scarf
A common method of improving the performance of children and non-human primates on the delay-of-gratification maintenance paradigm and measures of executive function (e.g., the Less is More task) is to represent the rewards subjects can acquire symbolically. This method, known as symbolic distancing, is thought to lower activation of the "hot" impulsive system and allow the "cool" rational system to dominate processing. Surprisingly, in contrast to its impact on the measures noted above, recent developmental and comparative studies have reported that symbolic distancing has a null or negative impact on performance on the delay-of-gratification choice paradigm...
November 28, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27899311/seasonal-biotic-and-abiotic-factors-affecting-hunting-strategy-in-free-living-saharan-sand-vipers-cerastes-vipera
#8
Sefi J A Horesh, Jaim Sivan, Avi Rosenstrauch, Itay Tesler, A Allan Degen, Michael Kam
Sit-and-wait ambushing and active hunting are two strategies used by predators to capture prey. In snakes, hunting strategy is conserved phylogenetically; most species employ only one strategy. Active hunters encounter and capture more prey but invest more energy in hunting and have higher risks of being predated. This trade-off is important to small predators. The small Cerastes vipera employs both modes of hunting, which is unlike most viperids which use only sit-and wait ambushing. This species hibernates in October and emerges in April...
November 26, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27894933/parasitism-personality-and-cognition-in-fish
#9
REVIEW
I Barber, A B Mora, E M Payne, K L Weinersmith, A Sih
It is well established that parasites can have profound effects on the behaviour of host organisms, and that individual differences in behaviour can influence susceptibility to parasite infections. Recently, two major themes of research have developed. First, there has been a growing interest in the proximate, mechanistic processes underpinning parasite-associated behaviour change, and the interactive roles of the neuro-, immune, and other physiological systems in determining relationships between behaviour and infection susceptibility...
November 25, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27890598/small-and-large-number-discrimination-in-goldfish-carassius-auratus-with-extensive-training
#10
REVIEW
Caroline M DeLong, Stephanie Barbato, Taylor O'Leary, K Tyler Wilcox
Previous studies on relative quantity discrimination in birds and mammals with training procedures have employed hundreds or thousands of trials whereas studies with fish typically use dozens of trials. The goal of this study was to examine whether more extensive training improves the performance of fish tested on stimuli in the small (<4) and large (>4) number range. Goldfish were trained with dot array stimuli using the ratio 0.5 (2 vs. 4, 6 vs.12) across two blocks of training sessions with a total of approximately 1200 trials...
November 24, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27889416/reducing-spontaneous-recovery-and-reinstatement-of-operant-performance-through-extinction-cues
#11
Rodolfo Bernal-Gamboa, A Matías Gámez, Javier Nieto
It has been argued that the response recovery effects share a common mechanism. A possible way to test it is evaluating whether the techniques that impaired renewal would impair the other recovery effects as well. Two experiments with rats used a free operant procedure to explore whether an extinction-cue could prevent the spontaneous recovery and reinstatement of an extinguished lever-pressing. Both experiments consisted of four phases: Acquisition, Extinction and Test 1 and Test 2. First, all rats were trained to perform one instrumental response (R1) for food in context A, and a different instrumental response (R2) for food in context B...
November 23, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27880867/psittacine-cognition-individual-differences-and-sources-of-variation
#12
REVIEW
Victoria A Cussen
Both the number and breadth of avian cognition studies have expanded in the past three decades. Parrots have a long history as subjects in avian cognition research. This paper summarizes results from a number of parrot species tested on basic learning, and physical & social cognitive processes, with an emphasis on individual differences. Early psittacine studies were aimed at demonstrating a particular cognitive ability existed in a given species. Because of this proof of capacity focus, early studies typically included only a single individual or a dyad of parrots...
November 20, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27876641/individual-differences-in-personality-in-laying-hens-are-related-to-learning-a-colour-cue-association
#13
Elske N de Haas, Caroline Lee, Carlos E Hernandez, Marc Naguib, T Bas Rodenburg
Personality can influence how animals perceive and learn cues. The behaviour and physiological responses animals show during stressful events is indicative of their personality. Acute induced stress prior to a cognitive test is known to affect the judgement of a stimulus, but personality of an individual could also affect learning of a specific cognitive paradigm. Here, we assessed if adult laying hens' behaviour and physiological responses, as indicators of their personality, were related to their cognitive performance...
November 19, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27871889/spontaneous-prosocial-choice-by-captive-bottlenose-dolphins-tursiops-truncatus
#14
Fumio Nakahara, Masayuki Komaba, Ryoichi Sato, Hisako Ikeda, Kumiko Komaba, Akihiro Kawakubo
Dolphins exhibit prosocial behavior across several different contexts. However, only a few experimental studies have investigated the psychological mechanisms underlying this behavior. In this study, we investigated the mechanisms underlying prosociality in bottlenose dolphins (Tursiops truncatus). In the experiments, water shower devices, developed as environmental enrichment items, were used. Two paradigms were used to measure prosociality. The first was the prosocial choice task, involving the subject typically being offered one choice between two options...
November 18, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27864066/stimulus-control-in-two-rodent-models-of-attention-deficit-hyperactivity-disorder
#15
Adam E Fox, Sierra R Caramia, Molly M Haskell, Aerial L Ramey, Depika Singha
The spontaneously hypertensive (SHR/NCrl) rat from Charles River is one of the most widely used models of the combined subtype of Attention-Deficit/Hyperactivity Disorder (ADHD-C). Although often used as its control strain, the Wistar Kyoto (WKY/NCrl) from Charles River has been proposed as a model of the predominately inattentive subtype of ADHD (ADHD-PI). In Experiment 1 SHR/NCrl, WKY/NCrl, and Wistar (WI; the progenitor strain for the two models) rats were trained on a left→right lever-press sequence in the presence of light discriminative stimuli that signaled the active lever in the sequence...
November 15, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27864065/lateralization-of-splay-posture-in-reticulated-giraffe-giraffa-camelopardalis-reticulate
#16
Joseph T Svoke
Motor laterality is quite often studied in non-human primates, but rarely has been investigated within ungulates. The aim of the study was to use the naturally occurring splay behavior in giraffe as a method to look for the presence of laterality. Four male giraffes housed at Zoo Atlanta were watched for three months, recording their first leg moved to begin the splay posture and the total number of leg movements to achieve a secure stance. All four giraffe significantly moved their left leg first to begin the stance, which suggests at least individual level laterality...
November 15, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27826037/elemental-configural-and-occasion-setting-mechanisms-in-biconditional-and-patterning-discriminations
#17
Andrew R Delamater, Eric Garr, Samantha Lawrence, Jesse W Whitlow
Three experiments explored the utility of considering mechanisms of occasion setting for understanding patterning and biconditional discriminations - two more complex conditional discriminations in which the stimulus-outcome relations of occasion setting are embedded. In Experiment 1, rats were trained in an appetitive conditioning task with either a biconditional or a patterning discrimination using relatively brief CSs (10s) and differential outcomes as USs. In this study, rats learned the positive patterning task before they had learned negative patterning, and the biconditional task was the most difficult...
November 5, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27794452/resurgence-as-choice
#18
REVIEW
Timothy A Shahan, Andrew R Craig
Resurgence is typically defined as an increase in a previously extinguished target behavior when a more recently reinforced alternative behavior is later extinguished. Some treatments of the phenomenon have suggested that it might also extend to circumstances where either the historic or more recently reinforced behavior are reduced by other non-extinction related means (e.g., punishment, decreases in reinforcement rate, satiation, etc.). Here we present a theory of resurgence suggesting that the phenomenon results from the same basic processes governing choice...
October 26, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27744087/individual-recognition-of-social-rank-and-social-memory-performance-depends-on-a-functional-circadian-system
#19
L Müller, D Weinert
In a natural environment, social abilities of an animal are important for its survival. Particularly, it must recognize its own social rank and the social rank of a conspecific and have a good social memory. While the role of the circadian system for object and spatial recognition and memory is well known, the impact of the social rank and circadian disruptions on social recognition and memory were not investigated so far. In the present study, individual recognition of social rank and social memory performance of Djungarian hamsters revealing different circadian phenotypes were investigated...
October 13, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27737770/swarm-intelligence-in-fish-the-difficulty-in-demonstrating-distributed-and-self-organised-collective-intelligence-in-some-animal-groups
#20
Christos C Ioannou
Larger groups often have a greater ability to solve cognitive tasks compared to smaller ones or lone individuals. This is well established in social insects, navigating flocks of birds, and in groups of prey collectively vigilant for predators. Research in social insects has convincingly shown that improved cognitive performance can arise from self-organised local interactions between individuals that integrates their contributions, often referred to as swarm intelligence. This emergent collective intelligence has gained in popularity and been directly applied to groups of other animals, including fish...
October 11, 2016: Behavioural Processes
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