The denning behaviour of dingoes (Canis dingo) living in a human-modified environment

2017 ◽  
Vol 39 (2) ◽  
pp. 161 ◽  
Author(s):  
Bradley Smith ◽  
Anne-Louise Vague
Keyword(s):  
Site Selection ◽  
Large Scale ◽  
Mining Operation ◽  
Breeding Site ◽  
Sandy Desert ◽  
Surrounding Area ◽  
Den Site Selection ◽  
Close Proximity ◽  
Free Ranging ◽  
Selection Of

Little is known about reproduction and den site selection by free-ranging dingoes. We present observations of den sites used by dingoes inhabiting a large-scale mining operation located in the Great Sandy Desert, Western Australia. We observed 24 dens concentrated within a 1-km radius. Den sites were generally situated in elevated positions overlooking the surrounding area, were a short distance from food and water resources, required vegetation (particularly spinifex grass) to provide a firm foundation and stable ceiling in the soft sand, and had single den openings that faced away from the rising and daytime sun. Distance to human structures or activity did not appear to influence site selection. Four of the dens were active, containing a total of 37 pups aged between two and four weeks of age. One den contained 18 pups of different ages, indicating that communal denning was also occurring. The high number of breeding females within close proximity suggests that multiple family groups are able to share resources and live in close proximity. Our findings highlight the importance of human-modified areas and abundance of resources in the reproduction and breeding site selection of dingoes.

Use of multivariate methods in forest research site selection

1991 ◽  
Vol 21 (11) ◽  
pp. 1573-1580 ◽  
Author(s):  
Andrew J. Burton ◽  
Carl W. Ramm ◽  
Kurt S. Pregitzer ◽  
David D. Reed
Keyword(s):  
Site Selection ◽  
Large Scale ◽  
Multivariate Methods ◽  
Data Bases ◽  
Principal Coordinates Analysis ◽  
Research Site ◽  
Principal Coordinates ◽  
Alternative Sites ◽  
Existing Data ◽  
Selection Of

In large-scale gradient studies, selection of the best research sites is critical but time-consuming and costly. Multivariate methods can be used to quickly identify suitable sites from existing data bases. Based on a study of acid deposition in the Great Lakes region (the Michigan Gradient Study), we illustrate the use of multivariate methods in screening potential research sites for similarity. Sites were examined using cluster analysis, principal coordinates analysis, and correspondence analysis. The graphical displays generated by the multivariate methods were used to identify similar sites across the gradient. A list of 31 potential sites was reduced to 5 similar research sites and several alternative sites. The results of the multivariate methods compared well with more traditional methods of research site selection but allowed for multiple comparisons of many potential sites using a variety of data from existing data bases. By eliminating sites that are unacceptable with respect to available data, the multivariate methods reduce the number of sites that require field visitation prior to final site verification. This process represents a substantial savings in time and effort when dealing with a long list of potential research sites.

Breeding site selection of Bufo viridis in the city of Rome (Italy)

2003 ◽  
Vol 24 (3) ◽  
pp. 396-400 ◽  
Author(s):  
Paolo Formichetti ◽  
Alberto Sorace ◽  
Silvia Loriga ◽  
Roberto Isotti ◽  
Francesca Ensabella
Keyword(s):  
Site Selection ◽  
Breeding Site ◽  
Bufo Viridis ◽  
The City ◽  
Selection Of

scholarly journals Importance of Native Grassland Habitat for Den-Site Selection of Indian Foxes in a Fragmented Landscape

PLoS ONE ◽  
2013 ◽  
Vol 8 (10) ◽  
pp. e76410 ◽  
Author(s):  
Girish Arjun Punjabi ◽  
Ravi Chellam ◽  
Abi Tamim Vanak
Keyword(s):  
Site Selection ◽  
Fragmented Landscape ◽  
Den Site Selection ◽  
Native Grassland ◽  
Selection Of

Microscale den-site selection of grizzly bears in southwestern Yukon

Ursus ◽  
2012 ◽  
Vol 23 (2) ◽  
pp. 226-230 ◽  
Author(s):  
Nathan S. Libal ◽  
Jerrold L. Belant ◽  
Ramona Maraj ◽  
Bruce D. Leopold ◽  
Guiming Wang ◽  
...  
Keyword(s):  
Site Selection ◽  
Grizzly Bears ◽  
Den Site Selection ◽  
Selection Of

scholarly journals Synergism between nonane and emanations from soil as cues in oviposition-site selection of natural populations of Anopheles gambiae and Culex quinquefasciatus

2021 ◽  
Author(s):  
Victor Saturnus Mwingira ◽  
Leonard E.G. Mboera ◽  
Willem Takken
Keyword(s):  
Synergistic Effect ◽  
Anopheles Gambiae ◽  
Culex Quinquefasciatus ◽  
Site Selection ◽  
Natural Populations ◽  
Breeding Site ◽  
Distilled Water ◽  
Oviposition Site Selection ◽  
Untreated Soil ◽  
Selection Of

Abstract BackgroundOlfactory cues have been shown to have an important role in guiding gravid mosquito females to selected sites for egg laying. The objective of this study was to determine the influence of emanations from soil from a breeding site and the putative oviposition pheromone nonane on oviposition-site selection of natural populations of Anopheles gambiae sensu lato (s.l.) and Culex quinquefasciatus.MethodsThis field-based study was conducted in Mvomero District in East-central Tanzania. In a dual-choice experimental set up, clay bowls were dug into the ground and filled with one of the following treatments: (i) distilled water + autoclaved soil (control), (ii) distilled water + soil from a natural mosquito breeding site, (iii) distilled water + nonane and (iv) distilled water + nonane + soil from a natural breeding site. Soil was dried and autoclaved or dried only before use. After five days of incubation, larvae were collected daily for 10 days. The median number of larvae per bowl per day was used as outcome measure.ResultsAutoclaved soil had a significant attractive effect on oviposition behaviour of Cx. quinquefasciatus (median values ± s.e: 8.0±1.1; P<0.005) but no effect on An. gambiae (median value ± s.e: 0.0±0.2; P = 0.18). Nonane and emanations from untreated soil significantly and positively influenced the selection of oviposition sites by both An. gambiae s.l. (median values ± s.e.: 12.0 ± 2.0 and 4.5 ± 1.5, respectively; P< 0.0001) and Cx. quinquefasciatus (median values ± s.e.: 19.0 ± 1.3 and 17.0 ± 2.0, respectively; P<0.0001). A mixture of nonane and untreated soil caused a synergistic effect on oviposition behaviour in An. gambiae s.l. (median value ± s.e.: 23.5 ± 2.5; P<0.0001) compared to either nonane (median values ± s.e.: 12.0 ± 2.0; P<0.0001) or untreated soil alone (median value ± s.e.: 4.5 ± 1.5; P<0.0001). A synergistic effect of nonane mixed with untreated soil was also found in Cx. quinquefasciatus (median value ± s.e.: 41.0 ± 2.1; P<0.0001) compared to either nonane (median value ± s.e. 19.0 ± 1.3; P<0.0001) or untreated soil alone (median value ± s.e.: 17.0 ± 2.0; P<0.0001). The oviposition activity index for An. gambiae was 0.56 (P< 0.001) and for Cx. quinquefasciatus 0.59 (P<0.0001).ConclusionThe larval pheromone nonane and emanations from breeding-site soil both induced oviposition in wild An. gambiae s.l. and Cx. quinquefasciatus, with a synergistic effect when both stimuli were present simultaneously. This is the first study in which nonane is shown to cause oviposition under natural conditions, suggesting that this compound can potentially be exploited for the management of mosquito vectors.

Den-site selection is critical for Pallas’s cats (Otocolobus manul)

2010 ◽  
Vol 88 (9) ◽  
pp. 905-913 ◽  
Author(s):  
S. Ross ◽  
R. Kamnitzer ◽  
B. Munkhtsog ◽  
S. Harris
Keyword(s):  
Site Selection ◽  
Mixed Models ◽  
Generalized Linear Mixed Models ◽  
Structural Features ◽  
Risk Selection ◽  
Central Mongolia ◽  
Den Site Selection ◽  
Repeated Use ◽  
Selection Of ◽  
Marmota Sibirica

We evaluated the habitat selection of 101 den sites used by 21 individual Pallas’s cats ( Otocolobus manul (Pallas, 1776) = Felis manul Pallas, 1776) in summer, winter, and the maternal period in central Mongolia using generalized linear mixed models. Pallas’s cats used rock crevices and marmot burrows as dens for giving birth, raising young, thermoregulation, feeding, mating, and as important cover from predators. Den sites were selected with higher proportions of rocky and ravine habitats in the surroundings, and in winter Pallas’s cats avoided the presence of humans. Habitat and structural features suggested that dens were selected to minimize predation risk. Selection of dens in shade in summer and the use of insulated dens of Siberian marmots ( Marmota sibirica (Radde, 1862)) in winter indicated that thermal properties may also be important. We contend that dens are a critical habitat for Pallas’s cats and the availability of suitable den sites is critical for the conservation of the species. Repeated use of maternal dens suggested they may be a limiting resource. Although marmot dens are unlikely to be limiting at present, over hunting of marmots is likely to reduce burrow availability in the future.

Denning behavior and den site selection of grizzly bears along the Parsnip River, British Columbia, Canada

Ursus ◽  
2005 ◽  
Vol 16 (1) ◽  
pp. 47-58 ◽  
Author(s):  
Lana M. Ciarniello ◽  
Mark S. Boyce ◽  
Douglas C. Heard ◽  
Dale R. Seip
Keyword(s):  
British Columbia ◽  
Site Selection ◽  
Grizzly Bears ◽  
Den Site Selection ◽  
Selection Of
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