Measuring body dimensions of leopards (Panthera pardus) from camera trap photographs

Measurement of body dimensions of carnivores usually requires the chemical immobilization of subjects. This process can be dangerous, costly and potentially harmful to the target individuals. Development of an alternative, inexpensive, and non-invasive method therefore warrants attention. The objective of this study was to test whether it is possible to obtain accurate measurements of body dimensions of leopards from camera trap photographs. A total of 10 leopards (Panthera pardus) were captured and collared at Malilangwe Wildlife Reserve, Zimbabwe from May 7 to June 20, 2017 and four body measurements namely shoulder height, head-to-tail, body, and tail length were recorded. The same measurements were taken from 101 scaled photographs of the leopards recorded during a baited-camera trapping (BCT) survey conducted from July 1 to October 22, 2017 and differences from the actual measurements calculated. Generalized Linear Mixed Effects Models were used to determine the effect of type of body measurement, photographic scale, posture, and sex on the accuracy of the photograph-based measurements. Type of body measurement and posture had a significant influence on accuracy. Least squares means of absolute differences between actual and photographic measurements showed that body length in the level back-straight forelimb-parallel tail posture was measured most accurately from photographs (2.0 cm, 95% CI [1.5–2.7 cm]), while head-to-tail dimensions in the arched back-bent forelimb-parallel tail posture were least accurate (8.3 cm, 95% CI [6.1–11.2 cm]). Using the BCT design, we conclude that it is possible to collect accurate morphometric data of leopards from camera trap photographs. Repeat measurements over time can provide researchers with vital body size and growth rate information which may help improve the monitoring and management of species of conservation concern, such as leopards.

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MONITORING OF THE WILD MAMMAL FAUNA IN BAMO MOUNTAIN IN NORTHERN IRAQ (KURDISTAN) FOR THE FIRST TIME USING CAMERA TRAP METHOD AND RAISING AWARENESS FOR ITS CONSERVATION

Bulletin of The Iraq Natural History Museum ◽

10.26842/binhm.7.2020.16.2.0161 ◽

2020 ◽

Vol 16 (2) ◽

pp. 161-172

Author(s):

Soran H. Ahmed ◽

◽

Soma I. Majeed ◽

Keyword(s):

Camera Trap ◽

Suitable Habitat ◽

Zagros Mountains ◽

Wild Mammals ◽

Northern Iraq ◽

Species Of Conservation Concern ◽

Key Species ◽

Persian Leopard ◽

Conservation Concern ◽

First Time

Mammals are under threat worldwide due to deforestation, hunting, and other human activities. In Iraq, a total of 93 species of wild mammals have been recorded including species with global conservation concern. Bamo Mountain is situated within the Zagros Mountains in northern Iraq which is a suitable habitat for wild mammals. Due to scarcity of the field survey efforts and cryptic behavior, monitoring of the wild mammals fauna in Zagros Mountain seems challenging. Therefore, we used a camera trap which seems to be an ideal way to determine species diversity of wild mammals in Bamo Mountain. Moreover, interviews with local villagers were performed. The mammalian diversity of Bamo Mountain is not fully explored but seemed threatened by local extinction due to poaching and wildlife trafficking, minefields, and annual fires. In this study, a total of eight species of wild mammals were recorded for the first time in Bamo Mountain using camera trap method including the Persian leopard Panthera pardus saxicolor Pocock, 1927, and the Wild goat Capra aegagrus Erxleben, 1777, flagship and key species of conservation concern. As far as it is concerned, the major threats on the wild mammals were discussed and some important points were highlighted towards the establishment of the protected area in Bamo Mountain.

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Climatic Variables Differentially Influence Neotropical Plant Species of Conservation Concern

Journal of Sustainable Forestry ◽

10.1080/10549811.2021.1944878 ◽

2021 ◽

pp. 1-16

Author(s):

Pablo Antúnez ◽

Christian Wehenkel ◽

Collins Byobona Kukunda ◽

José Ciro Hernández-Díaz

Keyword(s):

Plant Species ◽

Climatic Variables ◽

Species Of Conservation Concern ◽

Conservation Concern

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Using impact assessment study designs for addressing impacts to species of conservation concern

Wildlife Society Bulletin ◽

10.1002/wsb.179 ◽

2012 ◽

Vol 36 (3) ◽

pp. 450-456 ◽

Cited By ~ 2

Author(s):

Mike E. Marshall ◽

Ashley M. Long ◽

Shannon L. Farrell ◽

Heather A. Mathewson ◽

Michael L. Morrison ◽

...

Keyword(s):

Impact Assessment ◽

Impact Assessment Study ◽

Assessment Study ◽

Species Of Conservation Concern ◽

Conservation Concern ◽

Study Designs

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White-nose syndrome-related changes to Mid-Atlantic bat communities across an urban-to-rural gradient

BMC Zoology ◽

10.1186/s40850-021-00079-5 ◽

2021 ◽

Vol 6 (1) ◽

Author(s):

Sabrina Deeley ◽

Joshua B. Johnson ◽

W. Mark Ford ◽

J. Edward Gates

Keyword(s):

The United States ◽

Myotis Lucifugus ◽

National Capital Region ◽

Conservation Areas ◽

White Nose Syndrome ◽

Species Of Conservation Concern ◽

National Capital ◽

Park Service ◽

Bat Conservation ◽

Conservation Concern

Abstract Background White-nose Syndrome (WNS) has reduced the abundance of many bat species within the United States’ Mid-Atlantic region. To determine changes within the National Park Service National Capital Region (NCR) bat communities, we surveyed the area with mist netting and active acoustic sampling (2016–2018) and compared findings to pre-WNS (2003–2004) data. Results The results indicated the continued presence of the threatened Myotis septentrionalis (Northern Long-eared bat) and species of conservation concern, including Perimyotis subflavus (Tri-colored bat), Myotis leibii (Eastern Small-footed bat) and Myotis lucifugus (Little Brown bat). However, we documented a significant reduction in the abundance and distribution of M. lucifugus and P. subflavus, a decrease in the distribution of M. septentrionalis, and an increase in the abundance of Eptesicus fuscus (Big Brown bat). Conclusions Documented post-WNS M. septentrionalis recruitment suggests that portions of the NCR may be important bat conservation areas. Decreases in distribution and abundance of P. subflavus and M. lucifugus indicate probable extirpation from many previously occupied portions of the region.

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Deep genetic structure at a small spatial scale in the endangered land snail Xerocrassa montserratensis

Scientific Reports ◽

10.1038/s41598-021-87741-7 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Cristina Català ◽

Vicenç Bros ◽

Xavier Castelltort ◽

Xavier Santos ◽

Marta Pascual

Keyword(s):

Genetic Structure ◽

Land Snail ◽

Snail Species ◽

Small Spatial Scale ◽

Geographic Ranges ◽

Genetic Groups ◽

Species Of Conservation Concern ◽

Conservation Actions ◽

Conservation Concern ◽

Single Locality

AbstractSpecies with small geographic ranges do not tend to have a high genetic structure, but some land snail species seem to be an exception. Xerocrassa montserratensis, an endangered land snail endemic to Catalonia (northeastern Iberian Peninsula), is an excellent model to study the processes affecting the phylogeography of specialized species of conservation concern. This species is restricted to xerophilous stony slopes and occurs within a small and fragmented area of ca. 500 km2. We sequenced the COI barcode region of 152 individuals from eight sites covering the entire range of the species. We found four genetic groups mostly coincident with their geographic distribution: a central ancestral group containing shared haplotypes among five localities and three groups restricted to a single locality each. Two of these derived groups were geographically and genetically isolated, while the third and most differentiated group was not geographically isolated. Geomorphologic and paleoclimatic processes during the Pleistocene can explain the divergence found between populations of this low dispersal species with historical fragmentation and secondary contacts. Nonetheless, recent passive large dispersal through streams was also detected in the central group. Overall, our study uncovered four evolutionary units, partially matching morphologically described subspecies, which should be considered in future conservation actions.

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Integrating citizen science and remotely sensed data to help inform time-sensitive policy decisions for species of conservation concern

Biological Conservation ◽

10.1016/j.biocon.2019.07.025 ◽

2019 ◽

Vol 237 ◽

pp. 463-469 ◽

Cited By ~ 1

Author(s):

Ashley M. Long ◽

Brian L. Pierce ◽

Amanda D. Anderson ◽

Kevin L. Skow ◽

Addie Smith ◽

...

Keyword(s):

Citizen Science ◽

Remotely Sensed ◽

Policy Decisions ◽

Remotely Sensed Data ◽

Species Of Conservation Concern ◽

Conservation Concern

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Using a capture-recapture approach for modelling the detectability and distribution of Houbara Bustard in southern Tunisia

Bird Conservation International ◽

10.1017/s0959270911000487 ◽

2011 ◽

Vol 22 (3) ◽

pp. 288-298 ◽

Cited By ~ 5

Author(s):

M. CHAMMEM ◽

S. SELMI ◽

T. KHORCHANI ◽

S. NOUIRA

Keyword(s):

Regression Analyses ◽

Species Occurrence ◽

Imperfect Detection ◽

Southern Tunisia ◽

Species Of Conservation Concern ◽

Habitat Factors ◽

Houbara Bustard ◽

Capture Recapture ◽

Conservation Concern ◽

Free Ranging

SummaryModelling the distribution of species of conservation concern is an important issue in population ecology. Classically, logistic regression analyses are conducted to estimate species’ distributions from detection/non-detection data in a sample of sites and to test for the significance of several environmental variables in predicting the probability of occurrence. These modelling approaches assume that species detection probability is constant and equals one in all sampled sites, which is critical, notably in the case of rare, shy and cryptic species. The capture-recapture-like approach developed by Mackenzie et al. (2002, 2003) provides a reliable tool that accounts for imperfect detection when estimating species occurrence, as well as for assessing the relevance of site features as predictors of species occurrence probability. The aim of this study was to explore the possibility of using this approach in the context of Houbara Bustard Chlamydotis undulata in southern Tunisia. Our results show once more the low detectability of this emblematic species and stress the need to take this factor into account when estimating Houbara spatial distribution. The distribution of Houbara in southern Tunisia is more likely to be shaped by human-related than by habitat factors. In particular, Houbara occurrence was positively associated with site remoteness and camel numbers. Houbara seemed to avoid areas with high human presence and shared the most remote and agriculture-free zones with free-ranging camels.

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Genotype, gestation length, season, parity and sex effects on growth traits of two rabbit breeds and their crosses

Biotechnology in Animal Husbandry ◽

10.2298/bah1404717e ◽

2014 ◽

Vol 30 (4) ◽

pp. 717-729 ◽

Cited By ~ 1

Author(s):

S.S.A. Egena ◽

G.N. Akpa ◽

I.C. Alemede ◽

A. Aremu

Keyword(s):

Growth Traits ◽

Tail Length ◽

The Body ◽

Gestation Length ◽

Body Measurements ◽

Season Of Birth ◽

Trunk Length ◽

Body Dimensions ◽

Sex Effects ◽

Foundation Stock

One hundred and thirty rabbits were used to evaluate the effect of genotype, gestation length, season, parity and sex on growth traits of two breeds of rabbit and their crosses. The rabbit used for the experiment were breeds of the New Zealand White (NZW) and Chinchilla (CH) breed. Six breeding bucks (three/breed) and eighteen breeding does (nine/breed) served as the foundation stock. Traits measured include: body weight (BW), nose to shoulder length (NTS), shoulder to tail length (STL), heart girth (HG), trunk length (TL) and length of ear (LE). Results revealed that, BW of the rabbits were influenced (p<0.05) by genotype, gestation length and season. CH x (CH x NZW) progenies had better BW at 35-d and 49-d of age while NZW x CH progenies had better BW at 21-d of age. Kittens born late (32-34 days) had better BW at 21-d, 35-d and 49-d while kittens kindled during early dry season had better BW at 21-d, 35-d and 49-d. Genotype affected (p<0.05) all the body measurements at 21-d, 35-d and 49-d. Gestation length affected (p<0.05) all the body measurements except for NTS at 21-d and HG at 49-d respectively. Season of birth also influenced (p<0.05) all the body measurements except for LE 21-d. Parity and sex had no effect (p>0.05) on BW, NTS, STL, HG, TL and LE. It was concluded that genotype, gestation length and season influenced BW and body dimensions of the two breeds of rabbit and their crosses while parity and sex had no effect.

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Intrinsic Prey Preference and Selection of the Giant Gartersnake: A Threatened Predator in a Nonnative Prey-Dominated Community

Journal of Fish and Wildlife Management ◽

10.3996/062019-jfwm-051 ◽

2020 ◽

Vol 11 (1) ◽

pp. 164-173

Author(s):

Julia S.M. Ersan ◽

Brian J. Halstead ◽

Erica L. Wildy ◽

Michael L. Casazza ◽

Glenn D. Wylie

Keyword(s):

Exotic Species ◽

Native Species ◽

Prey Selection ◽

Central Valley ◽

Prey Preference ◽

Live Prey ◽

Species Of Conservation Concern ◽

Conservation Concern ◽

Behavioral Trials ◽

Selection Of

Abstract The introduction of exotic species into an environment can introduce great change in the trophic dynamics of native species. This is of even greater concern if the native species is of conservation concern. The giant gartersnake, Thamnophis gigas, an endemic predator of the Central Valley of California and a species of conservation concern at the state and federal levels, has declined as a result of conversion of its once vast wetland habitat to agriculture. Another anthropogenic factor contributing to this snake's changing ecology is the introduction of nonnative prey into the species' habitats. These introductions have resulted in a prey community that is almost completely composed of exotic species and have potential for considerable effects. In order to assess prey preference and selection we performed three sets of behavioral trials on naïve neonates. We examined 1) neonate prey preference in response to olfactory cues of prepared prey extracts, 2) neonate consumption of different live prey items presented simultaneously; and 3) terrestrial feeding behavior and/or latency to successful attack. Results from the olfactory study suggest that native Sierran treefrogs, Pseudacris sierra, are preferred by neonates. Results from consumption trials suggest that neonates are more likely to select frog species than fish species. This is the first study that we are aware of that examines prey selection of this threatened species and serves to inform its conservation and management.

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The Un-Common Leopard: presence, distribution and abundance in Gallies and Murree Forest Division, Northern Pakistan

Nature Conservation ◽

10.3897/natureconservation.37.32748 ◽

2019 ◽

Vol 37 ◽

pp. 53-80 ◽

Cited By ~ 1

Author(s):

Muhammad Asad ◽

Muhammad Waseem ◽

James G. Ross ◽

Adrian M. Paterson

Keyword(s):

Detection Probability ◽

Camera Trap ◽

Dorsal Side ◽

Panthera Pardus ◽

Northern Pakistan ◽

Demographic Structure ◽

Survey Period ◽

Forest Division ◽

Left And Right ◽

Active Trap

The leopard Panthera pardus is thought to be sparsely distributed across Pakistan and there is limited understanding of the demographic structure and distribution of the species in this country. We conducted a study, from April to July 2017, and, from March to June 2018, in the northern Pakistan region to establish the presence and distribution of leopards, mindful at the outset of their abundance in that region. The presence of leopards was confirmed in the Swat, Dir and Margalla Hills region. The leopard population in Gallies and Murree Forest Division was preliminarily assessed via camera-trapping. As a result, a total of 63 potential areas of leopard population were identified initially. The leopard was photo captured at 27 locations (hotspots) with 34 capture events yielding 195 images over the course of 3,022 active trap-nights. Camera trap images were examined to identify leopard individuals using their rosette patterns on both the left and right flanks and the dorsal side of the tail. Ultimately, 15 leopard individuals were identified during the first survey period of the study and four individuals were recaptured in the second survey period, together with three new individuals. The detection probability of individual leopards from MARK varied from 0.10 and 0.20 with a population size (preliminarily estimated to be 16–25 (SE = 3.18) in 2107 and 7–13 (SE = 1.87) in 2018. This gave a density of 4.5 to 9.5 leopards/100 km2, respectively. A home range of various individual leopards was found to extend from the Gallies Reserved Forest to the extended corridors of Guzara Forest. In general, this study suggests that the Guzara Forest is crucially important for the conservation of leopards in the region as this area allows them extended movement while searching for food and mates.

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