Road mortality in Swedish mammals: results of a drivers' questionnaire

2004 ◽  
Vol 10 (1) ◽  
pp. 225-233 ◽  
Author(s):  
Andreas Seiler ◽  
J-O. Helldin ◽  
Christiane Seiler
Keyword(s):  
Road Mortality

scholarly journals Barriers for big snakes: Incorporating animal behaviour and morphology into road mortality mitigation design

2021 ◽  
Vol 26 ◽  
pp. e01471
Author(s):  
Matthew R. Macpherson ◽  
Jacqueline D. Litzgus ◽  
Patrick J. Weatherhead ◽  
Stephen C. Lougheed
Keyword(s):  
Animal Behaviour ◽  
Road Mortality ◽  
Mitigation Design

11. Mitigation of Wildlife Collision Mortality at Little Cataraqui Creek Wetland

2018 ◽  
Author(s):  
Erin Keenan ◽  
Jeffy Henderson ◽  
Lauren Malo ◽  
Diana Pedersen
Keyword(s):  
Coastal Wetland ◽  
Public Awareness ◽  
Population Decline ◽  
Urban Traffic ◽  
Coastal Marsh ◽  
Road Mortality ◽  
Wetland Ecosystems ◽  
Turtle Species ◽  
Wetland Species ◽  
Specific Species

               Our research team is concerned with potential reptile and amphibian road mortality through Little Cataraqui Creek wetland along Front Rd. and Bath Rd. in Kingston, Ontario. The coastal marsh is a provincially significant wetland that supports species of migrating and breeding waterfowl, wetland dependent reptiles and amphibians, and may support some of Ontario’s threatened turtle species. The coastal wetland also provides a protected nesting area for a migrating species within Lake Ontario. Specific species of turtles, salamanders and frogs will be investigated.  Our team will identify general breeding, nesting and migratory behavior patterns of associated wetland species, and establish potential indirect effects on the wetland ecosystem due to population decline. Traffic volume and speed limits of Front Rd. and Bath Rd. at Little Cataraqui Creek Wetland will be identified, and any current wildlife crossing systems in place will be evaluated. Based on this research, our team will establish the significance of wildlife road mortality within Little Cataraqui Creek Wetland at Front Rd. and Bath Rd., and propose suitable mitigation techniques. These techniques may include implementing structural design solutions such as road barriers, culverts, etc., as well as increasing public awareness of wildlife crossing on Bath Rd. and Front Rd. by proposing appropriate traffic laws in the area. Themes include wetland species breeding and nesting behavior, and urban/traffic development issues surrounding wetland ecosystems.

Highway widening and underpass effects on vertebrate road mortality

Biotropica ◽  
2017 ◽  
Vol 49 (6) ◽  
pp. 765-769 ◽  
Author(s):  
Giordano Ciocheti ◽  
Julia Camara de Assis ◽  
John Wesley Ribeiro ◽  
Milton Cezar Ribeiro
Keyword(s):  
Road Mortality

scholarly journals A case study of butterfly road kills from Anaikatty Hills, Western Ghats, Tamil Nadu, India

2015 ◽  
Vol 7 (14) ◽  
pp. 8154 ◽  
Author(s):  
R. K. Sony ◽  
P. R. Arun
Keyword(s):  
Western Ghats ◽  
Tamil Nadu ◽  
Road Traffic ◽  
Mass Movement ◽  
High Rate ◽  
Road Mortality ◽  
Management Options ◽  
The Road ◽  
Background Population ◽  
The Impact

<p><strong> </strong>Anaikatty Hills of the Western Ghats in Tamil Nadu witness the annual spectacle of mass movement of lakhs of butterflies.  The present paper examines the impact of vehicular traffic on this ‘butterfly migration’ through a survey of butterfly mortality along a road stretch in Anaikatty Hills.  A high rate of mortality due to road traffic was observed during the mass movement of butterflies.  One-hundred-and-thirty-five butterfly road kills belonging to three families, nine genera and 12 species were recorded during the study.  The proportion of nymphalid butterflies among the road kills (70%) was very high compared to their respective share in the background population (39%), indicating a higher road mortality risk for nymphalids.  The conservation significance of the road traffic impact on butterfly assemblage and management options are discussed.</p><div> </div>

scholarly journals How Quickly are Road-killed Snakes Scavenged? Implications for Underestimates of Road Mortality

2011 ◽  
Vol 127 (2) ◽  
pp. 184-188 ◽  
Author(s):  
BRETT A. DEGREGORIO ◽  
THOMAS E. HANCOCK ◽  
DAVID J. KURZ ◽  
SAM YUE
Keyword(s):  
United States ◽  
Population Dynamics ◽  
Community Composition ◽  
The United States ◽  
The Other ◽  
Road Mortality ◽  
Correction Factors ◽  
Significant Extent ◽  
Removal Time ◽  
Maritime Forest

Abstract Annually, millions of snakes are killed on roads in the United States. Because of their potential abundance and ease of collection, many researchers have used road-killed snakes to examine community composition, movement patterns, and population dynamics. However, few previous studies have accounted for snake carcasses that are removed from roads by scavengers. Snake carcasses were placed at randomly selected locations along 2 km of road, one traversing maritime forest and the other surrounded by dune habitat. Carcasses in forested habitat were removed more often (100% vs 40%) and more quickly (8 hr vs 11 hr) than those placed in dune habitat. Half of the carcasses (50%) were removed within eight hours of placement and all carcasses were removed at night. Species and size of carcasses did not affect removal time. Removal time and scavenging intensity of snake carcasses most likely varies across regions and habitats. Furthermore, because scavenging appears to occur quickly and to such a significant extent, it may confound results of studies examining patterns of road-mortality. Thus, investigators that use data from road-killed snakes would benefit from a concurrent investigation of scavenging and application of appropriate correction factors to avoid underestimation of snake mortality.

The problems in determining international road mortality

2010 ◽  
Vol 42 (2) ◽  
pp. 492-499 ◽  
Author(s):  
V. Sauerzapf ◽  
A.P. Jones ◽  
R. Haynes
Keyword(s):  
Road Mortality

scholarly journals Revisiting the hypothesis of sex-biased turtle road mortality

2019 ◽  
Vol 132 (3) ◽  
pp. 289-295 ◽  
Author(s):  
Sue Carstairs ◽  
Marc Dupuis-Desormeaux ◽  
Christina M. Davy
Keyword(s):  
Trauma Centre ◽  
Road Mortality ◽  
Substantial Impact ◽  
Emydoidea Blandingii ◽  
Painted Turtles ◽  
Snapping Turtles ◽  
Turtle Conservation ◽  
Map Turtles ◽  
Graptemys Geographica ◽  
Using Data

Road mortality poses a major threat to turtle populations. Several studies have suggested that the terrestrial movements associated with nesting increase this risk for females. The Ontario Turtle Conservation Centre (OTCC) is home to the Kawartha Turtle Trauma Centre, which admits 900 or more turtles a year, with road injuries the primary cause of admission. We tested the hypothesis that road mortality in turtles is female-biased using data from injured Midland Painted Turtles (Chrysemys picta marginata), Snapping Turtles (Chelydra serpentina), Blanding’s Turtles (Emydoidea blandingii), and Northern Map Turtles (Graptemys geographica) collected over about 126 000 km2 and admitted to OTCC’s hospital from January 2013 to October 2017. There was no difference in the number of male and female admissions of Midland Painted, Blanding’s, or Snapping Turtles (P > 0.05); however, more female Northern Map Turtles than males were admitted (P < 0.001). Admission of female turtles peaked in June during the nesting season, but male admissions were more evenly distributed throughout the season. Our admissions data provide a temporally unbiased and geographically broad snapshot of turtle–vehicle interactions that can directly inform conservation and management policies. Although our data are not equivalent to mortality rates, these results demonstrate that vehicle strikes can have a substantial impact on both female and male turtles.

Variation in Toxoplasma gondii seroprevalence: effects of site, sex, species and behaviour between insular and mainland macropods

2020 ◽  
Vol 47 (8) ◽  
pp. 540 ◽  
Author(s):  
Patrick L. Taggart ◽  
Bronwyn A. Fancourt ◽  
David Peacock ◽  
Charles G. B. Caraguel ◽  
Milton M. McAllister
Keyword(s):  
Toxoplasma Gondii ◽  
Wildlife Conservation ◽  
Road Mortality ◽  
High Seroprevalence ◽  
Feral Cats ◽  
Macropus Eugenii ◽  
Modified Agglutination Test ◽  
Latent Disease ◽  
Multiple Species ◽  
Indirect Impacts

Context Feral cats threaten wildlife conservation through a range of direct and indirect effects. However, most studies that have evaluated the impacts of feral cats on species of conservation significance have focussed on direct impacts such as predation; few studies have considered the indirect impacts of cat-borne disease. Toxoplasma gondii, a cat-borne parasite, causes both acute and latent disease in a range of wildlife species, and macropods are particularly susceptible. Kangaroo Island is Australia’s third largest island and supports a high density of feral cats and high seroprevalence of T. gondii in multiple species, relative to the mainland. This suggests that Kangaroo Island has a high environmental contamination with the parasite and a high risk of infection for other species. Aims We aimed to describe T. gondii seroprevalence in culled and road-killed macropods, so as to assess the effects of island versus mainland location, sex, species and behaviour. Methods Macropod sera were tested for T. gondii IgG antibodies using a commercially available modified agglutination test. Key results The seroprevalence of T. gondii in culled western grey kangaroos (Macropus fuliginosus) was significantly higher on the island (20%, 11/54 positive) than on the mainland (0%, 0/61 positive). There was no difference in T. gondii seroprevalence between culled and road-killed (21%, 21/102 positive) kangaroos from the island. The seroprevalence of T. gondii was significantly higher in female (32%, 12/38 positive) than in male (13%, 8/60 positive) kangaroos, but we observed no sex effect in tammar wallabies (Macropus eugenii), and no effect of species. Conclusions The higher T. gondii seroprevalence in insular macropods supports previous reports of higher T. gondii exposure in other Kangaroo Island fauna. The lack of difference in T. gondii seroprevalence between culled and road-killed kangaroos suggests that T. gondii-positive animals are not more vulnerable to road mortality, in contrast to that suggested previously. Implications Our findings suggest greater potential adverse conservation impacts owing to toxoplasmosis on the island than on the mainland. In light of a recent study demonstrating higher cat abundance on the island than on the mainland, the higher observed T. gondii seroprevalence in insular macropods is likely to be a consequence of higher cat density.

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