sika deer
Recently Published Documents


TOTAL DOCUMENTS

966
(FIVE YEARS 190)

H-INDEX

37
(FIVE YEARS 5)

Insects ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1095
Author(s):  
Kandai Doi ◽  
Takuya Kato ◽  
Iori Tabata ◽  
Shin-ichi Hayama

Background: Tick distributions have changed rapidly with changes in human activity, land-use patterns, climate, and wildlife distributions over the last few decades. Methods: To estimate potential distributions of ticks, we conducted a tick survey at 134 locations in western Kanto, Japan. We estimated the potential distributions of six tick species (Amblyomma testudinarium Koch, 1844; Haemaphysalis flava Neumann, 1897; Haemaphysalis kitaokai Hoogstraal, 1969; Haemaphysalis longicornis Neumann, 1901; Haemaphysalis megaspinosa Saito, 1969; and Ixodes ovatus Neumann, 1899) using MaxEnt modeling based on climate patterns, land-use patterns, and the distributions of five common wildlife species: sika deer (Cervus nippon Temminck, 1838), wild boar (Sus scrofa Linnaeus, 1758), raccoon (Procyon lotor Linnaeus, 1758), Japanese raccoon dog (Nyctereutes procyonoides Gray, 1834), and masked palm civet (Paguma larvata C.E.H. Smith, 1827)). Results: We collected 24,546 individuals of four genera and 16 tick species. Our models indicated that forest connectivity contributed to the distributions of six tick species and that raccoon distribution contributed to five tick species. Other than that, sika deer distribution contributed to H. kitaokai, and wild boar distribution, bamboo forest, and warm winter climate contributed specifically to A. testudinarium. Conclusions: Based on these results, the dispersal of some tick species toward residential areas and expanded distributions can be explained by the distribution of raccoons and by forest connectivity.


Author(s):  
Michiko Okubo ◽  
Mizuho Sato ◽  
Wataru Tamamura ◽  
Saori Tsutsumi ◽  
Shinpei Morie ◽  
...  
Keyword(s):  

Author(s):  
Kangqi Wu ◽  
Yongtao Xu ◽  
Weiwei Zhang ◽  
Huirong Mao ◽  
Biao Chen ◽  
...  

We used a metagenomic approach to investigate whether and how captive and free-range impact the microbial communities and antimicrobial resistance in sika deer. The results provide solid evidence of the significant impacts on the microbial composition and function in captive and free-range sika deer. Interestingly, although the sika deer had the same exposure to antibiotic anthelmintics, the antimicrobial resistances were affected by the breeding environment.


Author(s):  
Hugo A. Gonzalez-Jassi ◽  
Nicole LeBlanc ◽  
Benjamin E. Alcantar ◽  
Rodrigo S. Garces Torres

Abstract OBJECTIVE To describe qualitative and quantitative cardiothoracic values in geriatric Sika deer (Cervus nippon) using digital radiography, 6-lead ECG (sECG), and smartphone-based ECG (aECG). ANIMALS 10 healthy geriatric Sika deer (9 females and 1 male). PROCEDURES Deer were chemically immobilized, thoracic radiographs were obtained, and inhalant anesthesia was initiated. An sECG and aECG were simultaneously recorded for each animal using the same ECG specifications. Results were compared between devices. RESULTS Radiographically, no deer had any cardiopulmonary abnormalities. Median (range) values for the most important cardiac measurements were 170 (153–193) mm for cardiac height, 135 (122–146) mm for cardiac width, 9 (8–9) for vertebral heart score, and 99 (69–124) mm for cardiosternal contact. All deer had a normal sinus rhythm with no pathological arrhythmias noted. A significant difference between sECG and aECG was identified for minimum heart rate (49 vs 51 beats/min, respectively), P wave duration (0.05 vs 0.03 seconds), P wave amplitude (0.28 vs 0.10 mV), PR interval (0.15 vs 0.12 seconds), and QT interval (0.39 vs 0.30 seconds). CLINICAL RELEVANCE Thoracic radiographs were suitable to evaluate basic cardiothoracic morphology in Sika deer. The aECG was useful for assessing heart rate and rhythm but, compared with sECG, proved no substitute for evaluating duration and amplitude of ECG waveforms.


Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3398
Author(s):  
Yoshikazu Seki ◽  
Shin-ichi Hayama

The Japanese serow (Capricornis crispus) and sika deer (Cervus nippon) in Japan are usually allopatric. However, a recent expansion in the distribution range of sika deer, combined with an increase in abundance, has resulted in an overlap of the distribution ranges of the two species. We examined the habitat selection and activity patterns of Japanese serows and sika deer using camera traps placed at 83 sites within a 210 km2 study area, where the distribution range of these two species has recently overlapped. Although both species were photographed throughout the study area, we observed a low spatial overlap between them. The Japanese serows selected steep slopes, and the sika deer selected areas far away from human settlements. In addition, the Japanese serows and sika deer exhibited temporal partitioning with diurnal and crepuscular activity patterns, respectively. The observed partitioning could be explained by differences in their species-specific habitat selections, rather than competition, because the photographic capture rate of the Japanese serows was not affected by that of the sika deer and vice versa. These partitioning behaviors are likely to reduce the rate of encounters between the two ungulates, which enables their coexistence considering the sika deer density remains low.


2021 ◽  
pp. 198645
Author(s):  
Masaharu Takahashi ◽  
Akira Nishizono ◽  
Manri Kawakami ◽  
Emiko Fukui ◽  
Emiko Isogai ◽  
...  

2021 ◽  
Vol 67 (4) ◽  
pp. 188-196
Author(s):  
Hiroki Sakagami ◽  
Eiji Gotoh ◽  
Eiichi Niitsu ◽  
Masamitsu Wada
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document