hare population
Recently Published Documents


TOTAL DOCUMENTS

57
(FIVE YEARS 5)

H-INDEX

17
(FIVE YEARS 1)

2022 ◽  
Vol 18 (1) ◽  
Author(s):  
Gabriela Lukesova ◽  
Eva Voslarova ◽  
Vladimir Vecerek ◽  
Katarina Nenadovic

Abstract Background Wildlife rescue centres care for orphaned and injured young as an integral part of their work. However, inappropriate interventions in nature can have a negative effect on the survival of young hares, especially when the care of these young is not very successful. The aim of this study was to assess the number of brown hare leverets admitted to rescue centres in the Czech Republic in the period from 2010 to 2019, the causes of their admission to rescue centres and their outcomes. Results We evaluated the number of brown hare leverets admitted to rescue centres in the Czech Republic in the period from 2010 to 2019 and the outcomes associated with their leaving these rescue centres. We found that the number of brown hare leverets admitted increased during the monitored period (rSp = 0.6364, p < 0.05). The most frequent reasons for admission were the admission of orphaned young (49.15%), leverets brought needlessly (19.60%) and leverets that had been bitten by other animals (18.63%). More (p < 0.05) young admitted to rescue centres died (40.76%) than were reared successfully and released back into the wild (32.40%). Leverets that had been caught needlessly or orphaned and late-born leverets survived and could be released back into the wild (38.56, 34.51 and 52%, respectively), while fatalities were recorded in most leverets bitten by another animal (65.05%) or hit in a collision with a vehicle (97.06%). Most young hares (76.92%) that were exhausted or starved at the time of admission could not be saved. Conclusions Since only a small proportion of hares in a litter survive until adulthood in the wild, young animals being found and taken needlessly to rescue centres may harm the hare population. Our results show that only around one in three healthy young hares admitted to rescue centres are reared successfully. It is, in our opinion, of fundamental importance to the protection of brown hare leverets to inform the public of this issue and prevent needless interventions into natural rearing in the wild.


Author(s):  
Madan K. Oli ◽  
Alice J. Kenney ◽  
Rudy Boonstra ◽  
Stan Boutin ◽  
Vratika Chaudhary ◽  
...  

Estimates of demographic parameters based on capture-mark-recapture (CMR) methods may be biased when some individuals in the population are temporarily unavailable for capture (temporary emigration). We estimated snowshoe hare abundance, apparent survival, and probability of temporary emigration in a population of snowshoe hares (Lepus americanus Erxleben 1777) in the Yukon using Pollock’s robust design CMR model, and population density using spatially-explicit CMR models. Survival rates strongly varied among cyclic phases, seasons, and across five population cycles. We found strong evidence that temporary emigration was Markovian (i.e., non-random), suggesting that it varied among individuals that were temporary emigrant in the previous sampling period and those that were present in the sampled area. The probability of temporary emigration for individuals that were in the study area during the previous sampling occasion (γ´´) varied among cycles. Probability that individuals that were temporarily absent from the sampled area would remain temporary emigrants (γ´) showed strongly seasonal pattern, low in winter and high during summers. Snowshoe hare population density ranged from 0.017 (0.015–0.05) hares/ha to 4.43 (3.90–5.00) hares/ha and large-scale cyclical fluctuation. Autocorrelation functions and autoregressive analyses revealed that our study population exhibited statistically significant cyclic fluctuations, with a periodicity of 9-10 years.


Ecology ◽  
2020 ◽  
Vol 101 (3) ◽  
Author(s):  
Madan K. Oli ◽  
Charles J. Krebs ◽  
Alice J. Kenney ◽  
Rudy Boonstra ◽  
Stan Boutin ◽  
...  

2018 ◽  
Vol 55 (2) ◽  
pp. 127-133 ◽  
Author(s):  
V. Sergi ◽  
G. Romeo ◽  
M. Serafini ◽  
E. Torretta ◽  
F. Macchioni

Summary Brown hare (Lepus europaeus) populations in Europe have declined through decades due to several, but not clear yet, factors. Parasite infections and diseases are some of the causes that directly affected the survival and breeding rates of animal population. A study on the endoparasites of 70 hares (37 hunted free-living hares, and 33 bred on farms hares) was performed between 2015 - 2017 in the province of Grosseto (central Italy), an area where the impact of parasites in the hare population has never been investigated. During necroscopic analysis of hunted hares the following helminthes were found: Trichostrongylus retortaeformis (87.1 %), Passalurus ambiguus (12.9 %) and Andrya spp. (6.4 %) in the intestinal tract, Protostrongylus cuniculorum (8.3 %) in lungs and Dicrocoelium dendriticum (16.7 %) in livers. The prevalences of the intestinal helminthes in bred hares were: 12.1 % for Passalurus ambiguus and 3 % for Trichostrongylus retortaeformis. The coprological analysis showed prevalences of 64.9 % for coccidia in the 37 hunted hares and 45.5 % in the 33 bred hares. The relationship between the intensities of parasitic infections and body weight was evaluated. The results of the present study in the Grosseto area indicate that free-living hares have few species of parasites and that the intensities of parasitic infection did not affect their general condition and health, suggesting that endoparasites played no detectable role in the dynamics of this hare population.


2018 ◽  
Vol 24 (7) ◽  
pp. 3236-3253 ◽  
Author(s):  
Maik Rehnus ◽  
Kurt Bollmann ◽  
Dirk R. Schmatz ◽  
Klaus Hackländer ◽  
Veronika Braunisch

2016 ◽  
Vol 9 (1) ◽  
pp. 83-92
Author(s):  
Zoran A. Ristić ◽  
Igor Ponjiger ◽  
Vladimir Mijailović ◽  
Vasilije Tešić ◽  
Milutin Kovačević ◽  
...  

Every year during the past 45 years (1967–2011), hunting organizations have been sending eye lenses (lens cristallina) to the Laboratory for hunting of the hunting association of Vojvodina for testing and analysis of the percentage of young hares in a micro population to establish the real growth rate. Th ese two parameters combined with the number of hares in spring and cull rate from last year were suffi cient to provide hunting organizations with precise information about hunting dynamics and rate of hunting in current hunting season. At the beginning, (in 1967), only 20%of hunting organizations submitted the samples, but ten years aft er the first sample had been collected, the percentage has gradually increased to 30% in 1977 Since then, the percentage of hunting organizations that were sending samples increased to 45% in 1987, 60% in 1997, and 70 % in 2007 with a maximum of 77% percentage in 2008. Th roughout the research period of 45 years, the total number of examined and processed eye lenses was 363,380. Out of 8,727 samples approximately 8,075 eye lenses were processed yearly. A small number of hunting organizations which didn’t send any samples haven’t been hunting brown hare in their hunting grounds during these years. During this research, several conclusions were made: the percentage of young hares in populations varies from 38% in 2010 to 70.3% in 1994. Th e average percentage for period of 45 years was 58.4% of young hares in a population. According to the research, the coeffi cient of real growth was 1.58 young hare per female hare. The minimum was 1.13 in 2010, and the maximum was 2.33 in 1994. Th ese analyses provided the actual information about stability and health of hare populations and enable a sustainable longterm planning of these game species.


Oikos ◽  
2015 ◽  
Vol 124 (6) ◽  
pp. 796-805 ◽  
Author(s):  
Donald L. DeAngelis ◽  
John P. Bryant ◽  
Rongsong Liu ◽  
Stephen A. Gourley ◽  
Charles J. Krebs ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document