Dewclaws in wolves as evidence of admixed ancestry with dogs

2003 ◽  
Vol 81 (12) ◽  
pp. 2077-2081 ◽  
Author(s):  
Paolo Ciucci ◽  
Vittorio Lucchini ◽  
Luigi Boitani ◽  
Ettore Randi
Keyword(s):  
Canis Lupus ◽  
Central Italy ◽  
Genetic Admixture ◽  
Molecular Evidence ◽  
Canis Lupus Familiaris ◽  
Dental Anomalies ◽  
Body Proportions ◽  
Careful Monitoring ◽  
Wild Canids ◽  
Molecular Investigation

Vestigial first toes (dewclaws) on the hind legs are common in large dog (Canis lupus familiaris) breeds but are absent in wild canids, including wolves (Canis lupus). Based on observational criteria, dewclaws in wolves have been generally regarded as a clue of hybridization with dogs, although this was not substantiated by molecular evidence. By means of population assignment and genetic admixture analysis, we investigated individual genotypes of three dewclawed wolves from Tuscany (central Italy, 1993–2001). Based on 18 microsatellite markers, dewclawed wolves were not uniquely assigned to the Italian wolf population but appeared to be second or later generation backcrosses of wolf–dog hybrids. Alleles uniquely shared with dogs, and mitochondrial DNA and Y haplotypes identical to those of Italian wolves, further supported their admixed ancestry. Although patterns of dewclaw inheritance in wolf–dog hybrids and backcrosses have not been ascertained, we conclude that dewclaws in wolves, when present, are a clue of admixed ancestry, probably originating in areas where large dog breeds are involved in cross-matings. Other "atypical" morphological traits (e.g., white nails, atypical color patterns or body proportions, dental anomalies) as well might be reliable clues of admixed ancestry, and they deserve careful monitoring and molecular investigation.

Hybridisation between the dingo, Canis lupus dingo, and the domestic dog, Canis lupus familiaris, in Victoria: a critical review

2009 ◽  
Vol 31 (1) ◽  
pp. 1 ◽  
Author(s):  
Evan Jones
Keyword(s):  
Canis Lupus ◽  
Population Sample ◽  
Population Models ◽  
Domestic Dog ◽  
Canonical Variate ◽  
Careful Examination ◽  
Canis Lupus Familiaris ◽  
Single Group ◽  
Wild Canids ◽  
Eastern Highlands

This paper reviews two separate population models proposed for a group of wild canids inhabiting the Victorian eastern highlands and re-analyses some of the data used. The first model was based upon two studies that used eight skull measurements in a canonical variate equation. Those studies classified population samples into three separate groups consisting of dingoes, feral domestic dogs and their hybrids. The second model, based upon a later study, classified a separate and additional population sample on the basis of both coat colour and physical appearance, but also cross-referenced the classifications to their canonical scores. That study rejected the model of three separate canid groups and the ability of the canonical variate equation to differentiate ‘pure’ dingoes from other canids. Instead the population was classified as a single group of dingo-like wild canids with an increased range in the variability of their physical characteristics compared to the original dingo population. After a re-evaluation of the data from the latter study and careful examination of the limitations of the canonical variate equation, the evidence presented here supports the population model of a single group of wild canids. Theoretical considerations associated with these two population models are discussed, as are the limitations of the canonical variate equation to classify the Victorian eastern highlands and other Australian wild canid populations.

scholarly journals Análisis preliminar de la presencia de perros ferales en la isla de Cedros y su efecto sobre las colonias de pinnípedos.

2008 ◽  
Vol 12 (1) ◽  
pp. 130 ◽  
Author(s):  
Juan Pablo Gallo-Reynoso ◽  
María Concepción García-Aguilar
Keyword(s):  
Canis Lupus ◽  
Community Dynamics ◽  
Mule Deer ◽  
Preliminary Evaluation ◽  
Canis Lupus Familiaris ◽  
Sea Lion ◽  
California Sea Lion ◽  
Ecological Processes ◽  
Wild Canids ◽  
Feral Dogs

RESUMEN: Los perros ferales (Canis lupus familiaris) son los cánidos salvajes más ampliamente distribuidos y su presencia en áreas naturales puede afectar la dinámica de las comunidades, incluyendo efectos que pueden propagarse a través de los ecosistemas, afectando plantas, animales y procesos ecológicos. En islas donde no existen depredadores naturales de gran tamaño, los perros han sido responsables de varias extinciones de especies endémicas. La presencia de perros ferales en la Isla de Cedros fue reportada desde hace una década y, presumiblemente, están afectando a los vertebrados nativos y endémicos, como los pinnípedos, el venado bura y el conejo matorralero. El objetivo de este estudio fue realizar una evaluación preliminar de la actividad depredatorias de los perros sobre estas especies. Cinco excretas de perros fueron colectadas y tres tipos de vertebrados se identificaron como presas (mamíferos, aves y reptiles). Aparentemente, el lobo marino de California es una presa común de los perros en la región noreste de la isla.PALABRAS CLAVE: Perros ferales, Canis lupus familiaris, pinnípedos, Isla de Cedros, Baja California.ABSTRACT: Feral dogs (Canis lupus familiaris) are the most widespread of wild canids and their presence in natural areas could influence community dynamics, including effects that can propagate through ecosystems, affecting plants, animals, and ecological processes. In islands, where there are no large natural predators, dogs have been responsible for many endemic island extinctions. Feral dogs were reported at Isla de Cedros since the last decade and, presumably, their presence is affecting native and endemic vertebrates, like pinnipeds, mule deer and brush rabbit. The aim of this study was to make a preliminary evaluation of the predatory activity of feral dogs over these species. Five feral dog scats were collected and three kinds of vertebrates were identified as preys (mammals, birds, and reptiles). Apparently, the California sea lion is a common prey of the dogs in the northeast portion of the island.KEY WORDS: Feral dogs, Canis lupus familiaris, pinnipeds, Isla de Cedros, Baja California

Primary osteoblast culture from domestic dog (Canis lupus familiaris)

2016 ◽  
Author(s):  
Ines Pedro Perpetuo ◽  
Richard Meeson ◽  
Andrew Pitsillides ◽  
Michael Doube ◽  
Isabel Orriss
Keyword(s):  
Canis Lupus ◽  
Domestic Dog ◽  
Canis Lupus Familiaris ◽  
Primary Osteoblast ◽  
Osteoblast Culture

Canis lupus familiaris. En: SAyDS�SAREM (eds.) Categorizaci�n 2019 de los mam�feros de Argentina seg�n su riesgo de extinci�n.

2019 ◽  
Author(s):  
Bernardo Lartigau ◽  
Gustavo Aprile ◽  
Mart�n Monteverde ◽  
Mario Santos Beade ◽  
Juan Manuel Lartigau ◽  
...  
Keyword(s):  
Canis Lupus ◽  
Canis Lupus Familiaris

scholarly journals Late Pleistocene skeleton of Canis lupus l., 1758 from Grotta Mora Cavorso (Jenne, Latium, central Italy)

2016 ◽  
Vol 15 (8) ◽  
pp. 941-949 ◽  
Author(s):  
Maurizio Gatta ◽  
Mario F. Rolfo ◽  
Carmelo Petronio ◽  
Leonardo Salari ◽  
Letizia Silvestri
Keyword(s):  
Late Pleistocene ◽  
Canis Lupus ◽  
Central Italy

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.

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