Infanticide by female wolves

1990 ◽  
Vol 68 (2) ◽  
pp. 402-404 ◽  
Author(s):  
Peter J. McLeod
Keyword(s):  
Canis Lupus ◽  
Maternal Behaviour ◽  
Common Occurrence ◽  
Video Recordings ◽  
Proximate Causes ◽  
Free Ranging

Video recordings made inside wolf dens chronicle two episodes of infanticide by different α females within a captive pack of timber wolves (Canis lupus). In one instance, infanticidal behaviour was interspersed with maternal behaviour. These cases are discussed in terms of the proximate causes of infanticide. It is also suggested that the killing of pups born to subordinate females by α females may be a common occurrence in both captive and free-ranging wolf packs.

Automatically detecting and tracking free‐ranging Japanese macaques in video recordings with deep learning and particle filters

Ethology ◽  
2019 ◽  
Vol 125 (5) ◽  
pp. 332-340 ◽  
Author(s):  
Masataka Ueno ◽  
Hidetaka Hayashi ◽  
Ryosuke Kabata ◽  
Kazunori Terada ◽  
Kazunori Yamada
Keyword(s):  
Deep Learning ◽  
Particle Filters ◽  
Japanese Macaques ◽  
Video Recordings ◽  
Free Ranging

scholarly journals DISEASES AND MORTALITY IN FREE-RANGING BROWN BEAR (URSUS ARCTOS), GRAY WOLF (CANIS LUPUS), AND WOLVERINE (GULO GULO) IN SWEDEN

2005 ◽  
Vol 41 (2) ◽  
pp. 298-303 ◽  
Author(s):  
Torsten Mörner ◽  
Hanna Eriksson ◽  
Caroline Bröjer ◽  
Kristina Nilsson ◽  
Henrik Uhlhorn ◽  
...  
Keyword(s):  
Canis Lupus ◽  
Ursus Arctos ◽  
Brown Bear ◽  
Gray Wolf ◽  
Gulo Gulo ◽  
Free Ranging

scholarly journals Treatment of a forelimb fracture and rehabilitation of a free-ranging Iberian Wolf (Canis lupus signatus)

2016 ◽  
Vol 36 (5) ◽  
pp. 412-416 ◽  
Author(s):  
Filipe C. Silva ◽  
Roberto F. Sargo ◽  
Luís C. Sousa ◽  
Helena Rio-Maior ◽  
Ricardo Brandão ◽  
...  
Keyword(s):  
Canis Lupus ◽  
Wound Management ◽  
Long Bone ◽  
Operative Care ◽  
Wildlife Tracking ◽  
Osteosynthesis Plate ◽  
The Right ◽  
Free Ranging ◽  
Canis Lupus Signatus ◽  
Iberian Wolf

Abstract: The surgical treatment of an exposed compounded comminuted fracture of the right radius and ulna in a free-ranging adult female Iberian Wolf (Canis lupus signatus) with an osteosynthesis plate and screws and subsequent post-operative care are described. The evolution of the fracture healing was very similar to those expected in a dog of the same size. The prompt surgical intervention and a proper housing, feeding and wound management adapted to a free-ranging wolf, in view to reduce manipulation and post-operative complications, allowed the subsequent rehabilitation and release of the animal. After 10th post-operative weeks the wolf was fitted with a Global Positioning System (GPS) for wildlife tracking collar and released in the same area where it has been caught. GPS telemetry data showed that the animal covered increasingly large distances confirming a complete functionality of the right thoracic limb and its successfully return to the wild. This report could constitute the first detailed report of a long bone fracture treatment in a free-ranging wolf and its successfully rehabilitation, release and adaptation to the wild.

The Wayward Dog: Is the Australian native dog or Dingo a distinct species?

Zootaxa ◽  
2017 ◽  
Vol 4317 (2) ◽  
pp. 201 ◽  
Author(s):  
STEPHEN M. JACKSON ◽  
COLIN P. GROVES ◽  
PETER J.S. FLEMING ◽  
KEN P. APLIN ◽  
MARK D.B. ELDRIDGE ◽  
...  
Keyword(s):  
Canis Lupus ◽  
Canis Familiaris ◽  
Distinct Species ◽  
Biological Data ◽  
Zoological Nomenclature ◽  
Morphological Evidence ◽  
Recent Proposal ◽  
Initial Description ◽  
Free Ranging ◽  
Scientific Name

The taxonomic identity and status of the Australian Dingo has been unsettled and controversial since its initial description in 1792. Since that time it has been referred to by various names including Canis dingo, Canis lupus dingo, Canis familiaris and Canis familiaris dingo. Of these names C. l. dingo and C. f. dingo have been most often used, but it has recently been proposed that the Australian Dingo should be once again recognized as a full species—Canis dingo. There is an urgent need to address the instability of the names referring to the Dingo because of the consequences for management and policy. Therefore, the objective of this study was to assess the morphological, genetic, ecological and biological data to determine the taxonomic relationships of the Dingo with the aim of confirming the correct scientific name. The recent proposal for Canis dingo as the most appropriate name is not sustainable under zoological nomenclature protocols nor based on the genetic and morphological evidence. Instead we proffer the name C. familiaris for all free-ranging dogs, regardless of breed and location throughout the world, including the Australian Dingo. The suggested nomenclature also provides a framework for managing free-ranging dogs including Dingoes, under Australian legislation and policy. The broad principles of nomenclature we discuss here apply to all free-roaming dogs that coexist with their hybrids, including the New Guinea Singing Dog. 

scholarly journals Conservation implications for the Himalayan wolf Canis (lupus) himalayensis based on observations of packs and home sites in Nepal

Oryx ◽  
2017 ◽  
Vol 53 (4) ◽  
pp. 663-669 ◽  
Author(s):  
Geraldine Werhahn ◽  
Naresh Kusi ◽  
Claudio Sillero-Zubiri ◽  
David W. Macdonald
Keyword(s):  
Canis Lupus ◽  
Alpine Grasslands ◽  
Average Composition ◽  
Negative Attitudes ◽  
Social Survey ◽  
Conservation Practice ◽  
Conservation Implications ◽  
Snow Leopards ◽  
Free Ranging ◽  
Temporal Overlap

AbstractWe provide insights into pack composition and den site parameters of the Himalayan wolf Canis (lupus) himalayensis based on observations of free-ranging wolves in three study areas in Nepal. We combine this with a social survey of the local Buddhist communities regarding human–carnivore conflict, to draw inferences for conservation practice in the Nepalese Himalayas. We recorded eight wolf packs (with an average composition of two adults and three pups), and found five home sites in high-altitude shrubland patches within alpine grasslands at 4,270–4,940 m altitude. There was a spatial–temporal overlap of wolf home sites and livestock herding during spring and summer, which facilitated human–wolf conflict. The litters of three out of five wolf packs found in Dolpa during 2016 were killed by local people in the same year. In Nepal compensation is offered for depredation by snow leopards Panthera uncia, with associated lowering of negative attitudes, but not for depredation by wolves. We recommend the implementation of financial and educational conservation schemes for all conflict-causing carnivores across the Himalayan regions of Nepal.

Comparison of DNA and hair-based approaches to dietary analysis of free-ranging wolves (Canis lupus)

2015 ◽  
Vol 7 (4) ◽  
pp. 871-878 ◽  
Author(s):  
Carolyn Shores ◽  
Samrat Mondol ◽  
Samuel K. Wasser
Keyword(s):  
Canis Lupus ◽  
Dietary Analysis ◽  
Free Ranging

scholarly journals Intergroup lethal gang attacks do not require fission-fusion dynamics to evolve

2020 ◽  
Author(s):  
Laura Martínez-Íñigo ◽  
Antje Engelhardt ◽  
Muhammad Agil ◽  
Malgorzata Pilot ◽  
Bonaventura Majolo
Keyword(s):  
Pan Troglodytes ◽  
Canis Lupus ◽  
Current Theory ◽  
Crocuta Crocuta ◽  
Variable Size ◽  
Intergroup Aggression ◽  
Macaca Nigra ◽  
Proximate Causes ◽  
Forms Of Violence ◽  
New Hypothesis

ABSTRACTLethal gang attacks, in which multiple aggressors attack a single victim, are among the most widespread forms of violence between human groups. Chimpanzees (Pan troglodytes), as well as wolves (Canis lupus), spotted hyaenas (Crocuta crocuta), and lions (Panthera leo), perform gang attacks during raids. In raids, a few individuals of a group enter another group’s territory and attack its members if found in numerical disadvantage. Current theory predicts that raids and gang attacks are linked to fission-fusion dynamics, i.e., the capacity of a group to split into smaller subgroups of variable size and composition. However, over the last decade, research on social mammals without fission-fusion societies nor raiding have shown that they may also be involved in intergroup lethal gang attacks. Thus, neither fission-fusion dynamics nor raiding are required for gang attacks to evolve. Based on our first-ever reports of intergroup gang attacks in the crested macaque (Macaca nigra), combined with the synthesis of earlier observations of such attacks in several species living in stable groups, we develop a new hypothesis about the proximate causes leading to lethal intergroup aggression. We propose that the ability to estimate numerical odds, form coalitionary bonds, and show hostility towards outgroup individuals may suffice to trigger intergroup gang attacks when the conditions favour an imbalance of power between victims and attackers.

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