scholarly journals Vocalization of European wolves (<i>Canis lupus lupus</i> L.) and various dog breeds (<i>Canis lupus</i> f. fam.)

2000 ◽  
Vol 43 (4) ◽  
pp. 387-398 ◽  
Author(s):  
D. U. Feddersen-Petersen

Abstract. Barking in domestic dogs still remains a topic of controversial discussions. While some authors assess dogbarking an acoustic means of expression becoming more and more sophisticated during domestication, others name this sound type "non-communicative". Vocal repertoires as works on individual sound types are rare, however, and there has been almost no work done on Iow-intensity, close-range vocalizations, yet such types of vocalization are especially important with the more social canids, hence, with the human-dog-communication and understanding of dogs. Most of the investigations published so far are based on auditive sound impressions and lack objectivity. The principal method used in this study was sonagraphic. This facilitates the identiftcation of sounds and reveales, whether subjective Classification can be verified by objectively measured parameters. Finally, meanings, funetions and emotions were examined for all the major sounds described and are discussed in terms of relationships between sound structure and Signal function, signal emission and social context as behavioural response, and overlapping Channels of communication. Ontogeny of acoustic communication in 11 European wolves has been compared to various dog breeds (8 Standard Poodles, 8 Toy Poodles, 15 Kleine Münsterländer, 11 Weimaraner Hunting Dogs, 16 Tervueren, 12 American Staffordshire Terriers, and 13 German Shepherds, 12 Alaskan Malamutes, and 9 Bull Terriers) from birth up to 8 (12) weeks resp. 4 (12) months of age. Noisy and harmonic sound groups were analysed separately as overriding units. Following parameters were used: fmax=maximum of spectrographic pietured sounds (Hz), xfo=mean of the lowest frequency band of harmonic sounds (Hz), xfd = mean of the frequency of strongest amplitude of noisy sounds (Hz), delta f = frequency range of sounds (Hz), duration of sounds (ms). Statistical analysis was run on "Statistica", Release 4,0. Within the sound type barking 2 to 12 subunits were classified in the different breeds, aecording to their context-speeifie spectrographic design, and behavioural responses. Categories of function / emotion include f.e. social play, play soliticing, exploration, caregiving, social contact and "greeting", loneliness, and agonistc behaviours. "Interaction" was the most common category of social context for masted barkings (56% of oecurences). Especially close-range vocalizations, conceming the major sound type of most domestic dogs, the bark, evolved highly variable. However, the ecological niche of domestic dogs is highly variable, just as the individual differences in the dogs are, which seem to be breed-typical to a great extent. Thus, complexity within the dog's vocal repertoire, and therefore enhancement of its communicative value, is achieved by many subunits of bark, some standing for specific motivations, informations and expressions. Complexity within the dogs'vocal repertoire is extended by the use of mixed sounds in the barking context. Transitions and gradations to a great extend oeeur via bark sounds: harmonic, intermediate and noisy subunits.

2015 ◽  
Vol 36-37 (1) ◽  
pp. 163-183
Author(s):  
Paul Taylor

John Rae, a Scottish antiquarian collector and spirit merchant, played a highly prominent role in the local natural history societies and exhibitions of nineteenth-century Aberdeen. While he modestly described his collection of archaeological lithics and other artefacts, principally drawn from Aberdeenshire but including some items from as far afield as the United States, as a mere ‘routh o’ auld nick-nackets' (abundance of old knick-knacks), a contemporary singled it out as ‘the best known in private hands' (Daily Free Press 4/5/91). After Rae's death, Glasgow Museums, National Museums Scotland, the University of Aberdeen Museum and the Pitt Rivers Museum in Oxford, as well as numerous individual private collectors, purchased items from the collection. Making use of historical and archive materials to explore the individual biography of Rae and his collection, this article examines how Rae's collecting and other antiquarian activities represent and mirror wider developments in both the ‘amateur’ antiquarianism carried out by Rae and his fellow collectors for reasons of self-improvement and moral education, and the ‘professional’ antiquarianism of the museums which purchased his artefacts. Considered in its wider nineteenth-century context, this is a representative case study of the early development of archaeology in the wider intellectual, scientific and social context of the era.


2017 ◽  
Vol 24 (2) ◽  
pp. 451-469
Author(s):  
Gudrun Lier ◽  
Anna Fransina Van Zyl

The study of Aramaic Bible translations (Targumim) continues to be a valuable source of information, not only for uncovering the history of biblical interpretation but also for providing insights for the study of linguistics and translation techniques. In comparison with work done on the Pentateuchal Targumim and Targum Former Prophets, research on the individual books of Targum Minor Prophets has been scant. By providing an overview of selected source material this review seeks (i) to provide incentives for more focussed studies in the field of Targum Minor Prophets and (ii) to motivate new integrated research approaches which are now made possible with the assistance of highly developed software programmes.


2018 ◽  
Author(s):  
Rhea M Howard ◽  
Annie C. Spokes ◽  
Samuel A Mehr ◽  
Max Krasnow

Making decisions in a social context often requires weighing one's own wants against the needs and preferences of others. Adults are adept at incorporating multiple contextual features when deciding how to trade off their welfare against another. For example, they are more willing to forgo a resource to benefit friends over strangers (a feature of the individual) or when the opportunity cost of giving up the resource is low (a feature of the situation). When does this capacity emerge in development? In Experiment 1 (N = 208), we assessed the decisions of 4- to 10-year-old children in a picture-based resource tradeoff task to test two questions: (1) When making repeated decisions to either benefit themselves or benefit another person, are children’s choices internally consistent with a particular valuation of that individual? (2) Do children value friends more highly than strangers and enemies? We find that children demonstrate consistent person-specific welfare valuations and value friends more highly than strangers and enemies. In Experiment 2 (N = 200), we tested adults using the same pictorial method. The pattern of results successfully replicated, but adults’ decisions were more consistent than children’s and they expressed more extreme valuations: relative to the children, they valued friends more and valued enemies less. We conclude that despite children’s limited experience allocating resources and navigating complex social networks, they behave like adults in that they reference a stable person-specific valuation when deciding whether to benefit themselves or another and that this rule is modulated by the child’s relationship with the target.


2016 ◽  
Vol 20 (3) ◽  
pp. 427-434 ◽  
Author(s):  
Maria Elena Miletto Petrazzini ◽  
Angelo Bisazza ◽  
Christian Agrillo

2021 ◽  
Vol 75 (3) ◽  
Author(s):  
Nick A. R. Jones ◽  
Helen C. Spence-Jones ◽  
Mike Webster ◽  
Luke Rendell

Abstract Learning can enable rapid behavioural responses to changing conditions but can depend on the social context and behavioural phenotype of the individual. Learning rates have been linked to consistent individual differences in behavioural traits, especially in situations which require engaging with novelty, but the social environment can also play an important role. The presence of others can modulate the effects of individual behavioural traits and afford access to social information that can reduce the need for ‘risky’ asocial learning. Most studies of social effects on learning are focused on more social species; however, such factors can be important even for less-social animals, including non-grouping or facultatively social species which may still derive benefit from social conditions. Using archerfish, Toxotes chatareus, which exhibit high levels of intra-specific competition and do not show a strong preference for grouping, we explored the effect of social contexts on learning. Individually housed fish were assayed in an ‘open-field’ test and then trained to criterion in a task where fish learnt to shoot a novel cue for a food reward—with a conspecific neighbour visible either during training, outside of training or never (full, partial or no visible presence). Time to learn to shoot the novel cue differed across individuals but not across social context. This suggests that social context does not have a strong effect on learning in this non-obligatory social species; instead, it further highlights the importance that inter-individual variation in behavioural traits can have on learning. Significance statement Some individuals learn faster than others. Many factors can affect an animal’s learning rate—for example, its behavioural phenotype may make it more or less likely to engage with novel objects. The social environment can play a big role too—affecting learning directly and modifying the effects of an individual’s traits. Effects of social context on learning mostly come from highly social species, but recent research has focused on less-social animals. Archerfish display high intra-specific competition, and our study suggests that social context has no strong effect on their learning to shoot novel objects for rewards. Our results may have some relevance for social enrichment and welfare of this increasingly studied species, suggesting there are no negative effects of short- to medium-term isolation of this species—at least with regards to behavioural performance and learning tasks.


2013 ◽  
Vol 25 (8) ◽  
pp. 1142 ◽  
Author(s):  
Insung Hwang ◽  
Yeon Woo Jeong ◽  
Joung Joo Kim ◽  
Hyo Jeong Lee ◽  
Mina Kang ◽  
...  

Interspecies somatic cell nuclear transfer (iSCNT) is an emerging assisted reproductive technology (ART) for preserving Nature’s diversity. The scarcity of oocytes from some species makes utilisation of readily available oocytes inevitable. In the present study, we describe the successful cloning of coyotes (Canis latrans) through iSCNT using oocytes from domestic dogs (Canis lupus familiaris or dingo). Transfer of 320 interspecies-reconstructed embryos into 22 domestic dog recipients resulted in six pregnancies, from which eight viable offspring were delivered. Fusion rate and cloning efficiency during iSCNT cloning of coyotes were not significantly different from those observed during intraspecies cloning of domestic dogs. Using neonatal fibroblasts as donor cells significantly improved the cloning efficiency compared with cloning using adult fibroblast donor cells (P < 0.05). The use of domestic dog oocytes in the cloning of coyotes in the present study holds promise for cloning other endangered species in the Canidae family using similar techniques. However, there are still limitations of the iSCNT technology, as demonstrated by births of morphologically abnormal coyotes and the clones’ inheritance of maternal domestic dog mitochondrial DNA.


2011 ◽  
Vol 76 (5) ◽  
pp. 975-980 ◽  
Author(s):  
Bruce W. Christensen ◽  
Cheryl S. Asa ◽  
Chong Wang ◽  
Lindsey Vansandt ◽  
Karen Bauman ◽  
...  

2010 ◽  
Vol 32 (2) ◽  
pp. 41-44 ◽  
Author(s):  
Thomas Lyons

By some estimates, more than half of prison inmates in America have a drug or alcohol problem (Mumola and Karberg 2006). Existing models of treatment for these individuals, both inside and outside prison, have typically focused on the individual addict. These interventions often neglect the users' families and communities, and view poverty and marginalization as tangential to recovery—which is seen instead purely as an individual, internal process. This perspective defines addiction as a brain disease, and emphasizes the need of recovering addicts to learn new skills and to take personal responsibility for their actions and lives (Committee on Addictions of the Group for the Advancement of Psychiatry, 2002). These models, though a marked improvement over the idea of drug addiction as a moral failing, place an over-riding emphasis on the individual at the expense of the economic and social context.


1998 ◽  
Vol 3 (3) ◽  
pp. 21-33 ◽  
Author(s):  
Thomas Kvan ◽  
Robert West ◽  
Alonso H. Vera

This paper proposes a methodology to evaluate the effects of computer-mediated communication on collaboratively solving design problems. When setting up a virtual design community, choices must be made between a variety of tools, choices dictated by budget, bandwidth, ability and availability. How do you choose between the tools, which is useful and how will each affect the outcome of the design exchanges you plan? A commonly used method is to analyze the work done and to identify tools which support this type of work. In general, research on the effects of computer-mediation on collaborative work has concentrated mainly on social-psychological factors such as deindividuation and attitude polarization, and used qualitative methods. In contrast, we propose to examine the process of collaboration itself, focusing on separating those component processes which primarily involve individual work from those that involve genuine interaction. Extending the cognitive metaphor of the brain as a computer, we view collaboration in terms of a network process, and examine issues of control, coordination, and delegation to separate sub-processors. Through this methodology we attempt to separate the individual problem-solving component from the larger process of collaboration. There is a long history of research into the role and application of computers to communication and collaboration from which has arisen a variety of tools to facilitate work done in groups. Holtham (1994) traces this history from the 1960s through to the 1990s, from addressing basic issues of computer communication through commercial implementation and diversified applications of the tools. Little of this research has focused on the work of designers, with no commercial systems available specifically for the design professions. Research has tended instead to look at typical office work, with particular attention to group work in formal and informal but coherent groups. This research provides a rich and useful heritage for investigations of design collaboration, but the findings have to be interpreted with the recognition that design work differs from typical office work in one substantial aspect � the use of graphics is central to design communication and this places a significant and different burden on the computer-supported communication when compared to textual interactions.


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