Discrete-trials Training Procedure for an Odor Discrimination in Domestic Dogs (Canis lupus familiaris)

2012 ◽  
Author(s):  
Nathaniel J. Hall ◽  
Clive D. L. Wynne
Keyword(s):  
Canis Lupus ◽  
Odor Discrimination ◽  
Domestic Dogs ◽  
Training Procedure ◽  
Canis Lupus Familiaris ◽  
Discrete Trials

scholarly journals Do domestic dogs (Canis lupus familiaris) perceive the Delboeuf illusion?

2016 ◽  
Vol 20 (3) ◽  
pp. 427-434 ◽  
Author(s):  
Maria Elena Miletto Petrazzini ◽  
Angelo Bisazza ◽  
Christian Agrillo
Keyword(s):  
Canis Lupus ◽  
Domestic Dogs ◽  
Canis Lupus Familiaris ◽  
Delboeuf Illusion

Successful cloning of coyotes through interspecies somatic cell nuclear transfer using domestic dog oocytes

2013 ◽  
Vol 25 (8) ◽  
pp. 1142 ◽  
Author(s):  
Insung Hwang ◽  
Yeon Woo Jeong ◽  
Joung Joo Kim ◽  
Hyo Jeong Lee ◽  
Mina Kang ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Canis Lupus ◽  
Somatic Cell Nuclear Transfer ◽  
Nuclear Transfer ◽  
Fusion Rate ◽  
Domestic Dogs ◽  
Domestic Dog ◽  
Canis Lupus Familiaris ◽  
Cloning Efficiency ◽  
Donor Cells

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.

Analysis and Identification of Damages Caused by Canine (Canis lupus familiaris) Manipulation of Woven Textiles as Cultural Evidence in Forensic Cases

2021 ◽  
Author(s):  
Gabriela Molina ◽  
Stefano De Luca ◽  
Fabiana Scarso
Keyword(s):  
Analysis Of Variance ◽  
Canis Lupus ◽  
Human Remains ◽  
Domestic Dogs ◽  
Canis Lupus Familiaris ◽  
Different Types ◽  
Statistical Program ◽  
The Relationship ◽  
Woven Textile ◽  
Age And Sex

Scavenging of human remains by dogs can make the process of identification and analysis of perimortem trauma difficult. Numerous scientific studies have been published about the damage caused to osseous remains by dogs due to postmortem consumption orlethal attacks. However, few studies deal with the issue of the analysis of clothing associated with human remains. The purpose of this investigation was to identify patterns of damage caused by domestic dogs to commonly used, woven textiles. Forty-five cloth bags were used (20 × 30 cm each), made by hand with three different types of woven textile (15 of each textile): stretch(polyester with elastic), denim, and polyester, with a thickness of 40.84, 57.95, and 31.46 threads per cm², respectively. The canine sample consisted of 15 dogs, differing in size, age, and sex, coming from the “Fundación Chile Mestizo,” in Santiago, Chile. Through analysis of variance, researchers examined the relationship between the type of textile and presence of damage, and later, they calculated the frequency of damage according to type of textile. The statistical program Minitab 19 was used to do this. According to the results, four types of patterns were identified: puncture and mastication, present in 62% and 75% of the cases, respectively; perforation; and “hole and tear” damage in 91% of the analyzed cases. Regarding the relationship between textile type and frequency of damage, researchers found that the thickness and weight of the textile are directly connected to the type of damage. 

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