Skin and bone: observations of dingo scavenging during a chronic food shortage

2010 ◽  
Vol 32 (2) ◽  
pp. 207 ◽  
Author(s):  
Benjamin L. Allen
Keyword(s):  
Canis Lupus ◽  
Bos Taurus ◽  
Food Shortage ◽  
Paper Briefly ◽  
Macropus Rufus ◽  
Prey Remains

Dingo (Canis lupus dingo and hybrids) diet studies primarily rely on analyses of prey remains found in stomachs or scats (i.e. faeces). However, dingoes are also scavengers, and doubt may remain as to whether or not a given item found in a stomach/scat was killed or scavenged. This paper briefly reports some incidental observations of dingoes scavenging cattle (Bos taurus), red kangaroos (Macropus rufus), wedge-tailed eagles (Aquila audax), and other dingo carcasses during a chronic food shortage. This confirms that diet studies may not be evidence for predation, and that dietary items collected during a discrete period may not actually reflect the period when the item died.

scholarly journals Facts from Faeces: Prey Remains in Wolf, Canis lupus, Faeces Revise Occurrence Records for Mammals of British Columbia's Coastal Archipelago

2005 ◽  
Vol 119 (2) ◽  
pp. 192 ◽  
Author(s):  
Michael H. H. Price ◽  
Chris T. Darimont ◽  
Neville N. Winchester ◽  
Paul C. Paquet
Keyword(s):  
British Columbia ◽  
New Species ◽  
Canis Lupus ◽  
Conservation Planning ◽  
Species Occurrence ◽  
Ecological Information ◽  
Terrestrial Predator ◽  
Prey Remains ◽  
Coastal British Columbia ◽  
Occurrence Records

Archipelagos often harbour taxa that are endemic and vulnerable to disturbance. Conservation planning and research for these areas depend fundamentally on accurate and current taxonomic inventories. Although basic ecological information is in its infancy, the temperate rainforest islands of coastal British Columbia are undergoing rapid human-caused modification, particularly logging. We report herein new mammal records for these islands as determined by prey remains in the faeces of Wolves (Canis lupus), the area’s apex mammalian terrestrial predator. Of particular interest is our detection of Marten (Martes americana) on islands previously inventoried and island occupancy by Moose (Alces alces), which have apparently migrated recently to coastal British Columbia. Remains in faeces provided valuable new species occurrence information, but more extensive and focused inventories are required to generate predictions of island occupancy by mammals based on biotic and abiotic landscape features.

scholarly journals Species-Specific Features of Intraorganic Vascularization of the Tarsal Joint Capsule in Cattle and Canines

2018 ◽  
Vol 62 (4) ◽  
pp. 12-18
Author(s):  
Y. Nechiporuk ◽  
V. Novak ◽  
V. Dudka
Keyword(s):  
Canis Lupus ◽  
Comparative Studies ◽  
Structural Organization ◽  
Bos Taurus ◽  
Dorsal Surface ◽  
Joint Capsule ◽  
Tarsal Joint ◽  
Medial Surfaces ◽  
Species Specific

Abstract The comparative studies of the tarsal joint capsule of cattle (Bos taurus) and canines (Canis lupus) have clarified general patterns of the structural organization of a joint capsule and the species-specific features of its angioarchitectonics. The differences in the formation of the fibroelastic layer and the location of vascular fields in the cases of animals with different stances were established. The zones of intensive intraorganic vascularization of the joint capsule were revealed; that being—the plantar and dorsal surface in the case of cattle, the lateral and medial surfaces—in case of the canine.

The diet of the dingo (Canis lupus dingo) in north-eastern Australia with comments on its conservation implications

2011 ◽  
Vol 33 (1) ◽  
pp. 79 ◽  
Author(s):  
L. A. Brook ◽  
A. S. Kutt
Keyword(s):  
Canis Lupus ◽  
Native Species ◽  
Bos Taurus ◽  
Local Population ◽  
European Hare ◽  
Feral Cat ◽  
Critical Weight ◽  
Conservation Implications ◽  
Eastern Australia ◽  
North Eastern

The dingo (Canis lupus dingo and hybrids) is the top mammalian predator on the Australian mainland and is thought to control and suppress populations of native herbivores and smaller mesopredators, including the introduced feral cat (Felis catus). Dingoes have been persecuted as a threat to domestic livestock, and local population decreases have been linked to increasing mesopredator populations, which in turn may cause the decline of small native mammals. There is little data on the dingo’s dietary composition in northern Australia. We examined the diet of dingoes in north-eastern Queensland via scat collection and analysis. A total of 178 scats were examined between 1994 and 2000, comprised of 185 prey items and representing 21 discrete prey types. Native mammal prey was the most frequent dietary component (69.7%), with large- to medium-sized macropods (Macropus spp. and Wallabia bicolor) present in the majority of samples (51.1%). Critical Weight Range species were found in 18.0% of the records. Introduced species such as the European hare/rabbit (Lepus capensis/Oryctolagus cuniculus) and cattle (Bos taurus) were found in smaller amounts (14.6 and 10.1%, respectively). These results suggest that dingoes prey considerably on large- to medium-sized macropods in our study area (north-eastern Australia). Dingo diet tends to differ regionally where dingoes prey on native species that are locally common or abundant. Finally, the diets of the dingo and feral cat do not appear to considerably overlap in our study area, which may have implications for mesopredator suppression.

X-Ray Diffractometer Investigations of Bones from Domestic and Wild Animals

1980 ◽  
Vol 45 (1) ◽  
pp. 59-63 ◽  
Author(s):  
Morten Østergård
Keyword(s):  
Wild Boar ◽  
Canis Lupus ◽  
Sus Scrofa ◽  
Bos Taurus ◽  
Canis Familiaris ◽  
Wild Animals ◽  
Domestic Pig ◽  
X Ray ◽  
Sus Domesticus ◽  
Hydroxyapatite Crystals

It is shown that by means of an X-ray diffractometer that in bone diaphyses of dog (Canis familiaris L.), wolf (Canis lupus L.), ox (Bos taurus L.), aurochs (Bos primigenius Boj.), domestic pig (Sus domesticus L.), and wild boar (Sus scrofa L.), the hydroxyapatite crystals are in all probability oriented with the basal pinacoid (002) at right angles to the long axes of the bones, although in some areas of the distal epihyses they parallel the long axes of the bones. No difference is found in the orientation of the crystals either between domestic and wild animals or between carnivores, ruminants and omnivores.

Experimentally derived incorporation rates and diet-to-tissue discrimination values for carbon and nitrogen stable isotopes in gray wolves (Canis lupus) fed a marine diet

2019 ◽  
Vol 97 (12) ◽  
pp. 1225-1230
Author(s):  
A.E. Stanek ◽  
N. Wolf ◽  
J.M. Welker ◽  
S. Jensen
Keyword(s):  
Stable Isotopes ◽  
Canis Lupus ◽  
Diet Composition ◽  
Bos Taurus ◽  
Pacific Salmon ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen ◽  
Gray Wolves ◽  
Tissue Discrimination ◽  
Diet Shifts

Recent studies have noted the differential effects of marine versus terrestrial diets on the carbon and nitrogen stable isotope (13C and 15N, respectively) diet-to-tissue discrimination values and incorporation rates for omnivorous and carnivorous mammals. Inaccurate estimates of these parameters may result in misrepresentation of diet composition or in the timing of diet shifts. Here, we present the results of a diet-switch experiment designed to estimate diet-to-tissue discrimination values and incorporation rates for tissues of gray wolves (Canis lupus Linnaeus, 1758) fed a diet of Pacific salmon (genus Oncorhynchus Suckley, 1861). Our results demonstrate substantial differences in both parameters between wolves maintained on a marine (salmon) diet and wolves maintained on terrestrially sourced prey (beef, Bos taurus Linnaeus, 1758). Increased awareness of the significance of marine resources to omnivorous and carnivorous consumers, like wolves, highlights the importance of phenomenological and mechanistic understandings of the effects of fish and other marine prey on dietary investigations based on stable isotopes.

Native prey distribution and migration mediates wolf (Canis lupus) predation on domestic livestock in the Greater Yellowstone Ecosystem

2016 ◽  
Vol 94 (4) ◽  
pp. 291-299 ◽  
Author(s):  
Abigail A. Nelson ◽  
M.J. Kauffman ◽  
A.D. Middleton ◽  
M.D. Jimenez ◽  
D.E. McWhirter ◽  
...  
Keyword(s):  
Cervus Elaphus ◽  
Canis Lupus ◽  
Bos Taurus ◽  
Distribution Data ◽  
Livestock Depredation ◽  
Movement Data ◽  
Domestic Livestock ◽  
Greater Yellowstone ◽  
And Migration ◽  
Prey Scarcity

Little research has evaluated how the migration and distribution of native prey influence patterns of livestock depredation by large carnivores. Previous research suggests that the presence of native prey can increase depredation rates by attracting predators (prey tracking hypothesis). Alternatively, the absence of native prey may facilitate predation on livestock (prey scarcity hypothesis). In this study, we evaluated support for these competing hypotheses through analysis of 4 years of cattle (Bos taurus L., 1758) depredation data (n = 39 kills), 2 years of summer and fall wolf (Canis lupus L., 1758) predation and tracking data (n = 4 wolves), and 3 years of elk (Cervus elaphus L., 1758) movement data (n = 70 elk). We used logistic regression to compare the relative influence of landscape features and elk distribution on the risk of livestock depredation in areas with migratory and resident elk. Cattle depredations occurred in habitats with increased encounter rates between wolves and livestock. In resident elk areas, depredation sites were associated with elk distribution and open roads. In migratory elk areas, depredation sites were associated with wolf dens, streams, and open habitat. Patterns of carnivore–livestock conflicts are complex, and using ungulate distribution data can predict and minimize such instances.

scholarly journals Diversidad faunística y potenciales agentes tafonómicos en el Chaco árido (Córdoba, Argentina): una aproximación preliminar con cámaras trampa

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
María Paula Weihmüller ◽  
Thiago Costa ◽  
Lucila Belén Castro ◽  
Fernando Rafael Barri
Keyword(s):  
Canis Lupus ◽  
Sus Scrofa ◽  
Bos Taurus ◽  
Canis Lupus Familiaris ◽  
Lama Guanicoe ◽  
Milvago Chimango ◽  
Vultur Gryphus

El objetivo de este trabajo consistió en identificar las principales especies animales que actúan sobre carcasas de ungulados de gran porte en un área cercana al extremo austral de las Salinas Grandes de Córdoba y su potencial como agentes tafonómicos, considerando variables ecológicas como etología, competencia y posición en la cadena trófica. Con este fin, se realizaron tres monitoreos con cámaras trampa sobre carcasas de Bos taurus y Lama guanicoe. Además, se efectuaron observaciones preliminares sobre desarticulación, dispersión y trazas generadas por distintos agentes tafonómicos sobre las carcasas, a fin de contribuir a nuestro entendimiento sobre los procesos naturales de formación de conjuntos zooarqueológicos en la región. Los monitoreos permitieron registrar 5870 animales en 194 días entre noviembre de 2017 y mayo de 2019. Aves (77,13%) y mamíferos (22,84%) fueron las clases mejor representadas. Entre las aves, se destacan Coragyps atratus, Caracara plancus, Vultur gryphus y Milvago chimango, mientras que entre los mamíferos destaca Lycalopex griseus y las especies exóticas Sus scrofa y Canis lupus familiaris. Se observaron diferencias entre los ensambles faunísticos registrados en cada monitoreo en función del tiempo transcurrido desde la muerte de los animales y de su ubicación espacial.

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