panthera tigris
Recently Published Documents


TOTAL DOCUMENTS

610
(FIVE YEARS 148)

H-INDEX

38
(FIVE YEARS 3)

BMC Zoology ◽  
2022 ◽  
Vol 7 (1) ◽  
Author(s):  
Xuanmin Kong ◽  
Dan Liu ◽  
Atul Kathait ◽  
Yonglu Cui ◽  
Qi Wang ◽  
...  

Abstract Background The Amur tiger (Panthera tigris altaica) is the largest and one of the most endangered cats in the world. In wild and captive cats, communication is mainly dependent on olfaction. However, vocal communication also plays a key role between mother and cubs during the breeding period. How cubs express their physiological and psychological needs to their mother and companions by using acoustic signals is little known and mainly hindered by the difficult process of data collection. Here, we quantitatively summarized the vocal repertoire and behavioral contexts of captive Amur tiger cubs. The aim of the present work was to investigate the behavioral motivations of cub calls by considering influential factors of age, sex, and rearing experiences. Results The 5335 high-quality calls from 65 tiger cubs were classified into nine call types (Ar-1, Ar-2, Er, eee, Chuff, Growl, Hiss, Haer, and Roar) produced in seven behavioral contexts. Except for Er, eight of the nine call types were context-specific, related to Play (Ar-2, eee, and Roar), Isolation (Ar-1), Offensive Context (Haer, Growl, and Hiss), and a friendly context (Chuff). Conclusions The results suggest that cubs are not quiet, but instead they express rich information by emitting various call types, which are probably crucial for survival in the wild. We herein provide the first detailed spectrogram classification to indicate vocal repertoires of calls and their coding with respect to behavioral contexts in Amur tiger cubs, and we pave the steps for revealing their social communication system, which can be applied for conservation of populations. These insights can help tiger managers or keepers to improve the rearing conditions by understanding the feline cubs’ inner status and needs by monitoring their vocal information expressions and exchanges.


2021 ◽  
Vol 68 ◽  
Author(s):  
Hung-Chuan Chiu ◽  
Kewei Fan ◽  
Xiaoshuang Sun ◽  
Kaixiong Lin ◽  
Tengteng Chen ◽  
...  

2021 ◽  
Vol 25 (2) ◽  
pp. 189
Author(s):  
Putu Laksmi Candra Dewi ◽  
Luh Putu Eswaryanti Kusuma Yuni ◽  
Ni Luh Watiniasih

Bali Zoo merupakan lembaga konservasi eksitu bagi berbagai jenis satwa, termasuk harimau benggala dan harimau sumatra. Kedua jenis ini termasuk dalam daftar IUCN dengan status terancam punah untuk harimau benggala dan status kritis untuk harimau sumatra. Penelitian ini bertujuan untuk mengetahui aktivitas harian kedua jenis harimau tersebut di Bali Zoo. Pengambilan dan pengumpulan data aktivitas harian dilakukan dengan metode focal animal sampling, pencatatan menggunakan metode instantaneous recording dengan interval 30 detik selama 30 menit. Pengambilan data dilakukan pada pagi, siang, dan sore hari. Kedua jenis harimau mengalokasikan waktunya paling banyak untuk beristirahat. Harimau sumatra mengalokasikan waktunya untuk istirahat sebesar 64,69 ± 2,52%, moving 31,32 ± 2,46%, grooming 2,72 ± 0,40%, buang air 0,37 ± 0,08%, makan 0,33 ± 0,11%, minum 0,31 ± 0,07% dan aktivitas sosial 0,26 ± 0,08%. Untuk harimau benggala, harimau ini mengalokasikan waktunya untuk istirahat sebesar 68,23± 2,20%, moving 24,14 ± 1,99%, sosial 3,54 ± 0,34%, grooming 2,23 ± 0,29%, buang air 0,39 ± 0,08%, minum 0,39 ± 0,09%, dan makan 0,08 ± 0,18%. Aktivitas pacing tercatat sangat rendah pada kedua jenis harimau mengindikasikan kondisi harimau yang cukup nyaman berada pada kandangnya.


Author(s):  
Lauren P. Kane ◽  
James L. Cook ◽  
Kate E. Archibald ◽  
W. Kirk Suedmeyer ◽  
Jennifer N. Langan ◽  
...  

Abstract CASE DESCRIPTION A 9-year-old 37-kg sexually intact male snow leopard (Panthera uncia) with no history of lameness but radiographic evidence of right femoral subluxation and flattening of both femoral heads, 2 juvenile (< 1 year old) 25-kg sexually intact male cheetahs (Acinoynx jubatus) with unilateral hind limb lameness resulting from trauma, and an 11-year-old 110-kg sexually intact female Amur tiger (Panthera tigris altaica) with a 2-year history of left hip joint osteoarthritis were examined. CLINICAL FINDINGS No clinically relevant clinical findings other than hip joint problems were identified. All 4 felids underwent staged bilateral (snow leopard) or unilateral (cheetahs and tiger [Panthera tigris]) total hip arthroplasty (THA). TREATMENT AND OUTCOME In the snow leopard, both femoral THA components were found to be luxated 1 year after surgery. Treatment consisted of autogenous corticocancellous rib graft augmentation of the dorsal acetabular rims and synthetic suture capsulorrhaphies. The snow leopard lived for an additional 4 years with no additional THA-related complications. In the other 3 animals, catastrophic complications (luxation in the cheetahs and femoral fracture in the tiger) occurred shortly after THA. The THA implants were removed, and excision arthroplasty was performed. Long-term outcomes were good in all 3. CLINICAL RELEVANCE Findings underscore the challenges associated with THA in large nondomestic felids. Given the high risk for early catastrophic failure as a result of luxation or fracture, plans must be made and resources must be available in case revision surgery or implant removal with excision arthroplasty becomes necessary.


2021 ◽  
Author(s):  
Chen Wang ◽  
Dong-Dong Wu ◽  
Yao-Hua Yuan ◽  
Meng-Cheng Yao ◽  
Jian-Lin Han ◽  
...  

Abstract The South China tigers (Panthera tigris amoyensis) are extinct in the wild, but viable populations remain in breeding centers and zoos after 60 years of effective conservation efforts. At present, however, the existing genetic variation of these tigers remains unknown. In this study, we assembled a high-quality chromosome-level genome using long-read sequences and re-sequenced 29 high-depth genomes of the South China tigers. We identified two significantly differentiated genomic ancestries in the extant populations, which also harbored some rare genetic variants introgressed from other subspecies, suggesting limited but essential genetic diversity to sustain the South China tigers. The unique pattern of dual ancestry and the genomic resources generated in our study pay the way for a genomics-informed conservation, following the real-time monitoring and controlled exchange of all reproductive South China tigers.


2021 ◽  
Vol 52 (4) ◽  
Author(s):  
Andrew C. Cushing ◽  
Kaitlin Sawatzki ◽  
Heather N. Grome ◽  
Wendy B. Puryear ◽  
Naomi Kelly ◽  
...  

2021 ◽  
Vol 13 (24) ◽  
pp. 13885
Author(s):  
Li An ◽  
Eve Bohnett ◽  
Curtis Battle ◽  
Jie Dai ◽  
Rebecca Lewison ◽  
...  

Although research on wildlife species across taxa has shown that males and females may differentially select habitat, sex-specific habitat suitability models for endangered species are uncommon. We developed sex-specific models for Bengal tigers (Panthera tigris) based on camera trapping data collected from 20 January to 22 March 2010 within Chitwan National Park, Nepal, and its buffer zone. We compared these to a sex-indiscriminate habitat suitability model to assess the benefits of a sex-specific approach to habitat suitability modeling. Our sex-specific models produced more informative and detailed habitat suitability maps and highlighted vital differences in the spatial distribution of suitable habitats for males and females, specific associations with different vegetation types, and habitat use near human settlements. Improving and refining habitat models for this and other critically endangered species provides the necessary information to meet established conservation goals and population recovery targets.


2021 ◽  
Vol 11 (2) ◽  
pp. 113-118
Author(s):  
Daniel Vaněk ◽  
Edvard Ehler ◽  
Lenka Vaňková

The aim of this technical note is to provide an overview of methodical approaches used to develop molecular systems for species determination/DNA quantification called Ptig Qplex and individual identification called Ptig STRplex of Panthera tigris samples. Both systems will help to combat the illegal trade of endangered species and create a worldwide shared database of DNA profiles.


Author(s):  
Cameron D. Owens ◽  
Tammy M. Michau ◽  
Justin Boorstein ◽  
Elizabeth R. Wynn ◽  
Richard J. McMullen

Abstract OBJECTIVE To calculate the necessary pseudophakic intraocular lens (IOL) power to approximate emmetropia in adult tigers. ANIMALS 17 clinically normal adult tigers. PROCEDURES 33 eyes of 17 clinically normal adult tigers underwent routine ophthalmic examination and B-scan ultrasonography while anesthetized for unrelated procedures. Specific ultrasound data (globe measurements and corneal curvature) and estimated postoperative IOL positions were utilized to calculate predicted IOL power by use of Retzlaff and Binkhorst theoretical formulas. Applanation tonometry and refraction were also performed. RESULTS Mean ± SD axial globe length was 29.36 ± 0.82 mm, preoperative anterior chamber depth was 7.00 ± 0.74 mm, and crystalline lens thickness was 8.72 ± 0.56 mm. Mean net refractive error (n = 33 eyes) was +0.27 ± 0.30 diopters (D). By use of the Retzlaff formula, mean predicted IOL power for the postoperative anterior chamber depth (PACD), PACD – 2 mm, and PACD + 2 mm was 43.72 ± 4.84 D, 37.62 ± 4.19 D, and 51.57 ± 5.72 D, respectively. By use of the Binkhorst equation, these values were 45.11 ± 4.91 D, 38.84 ± 4.25 D, and 53.18 ± 5.81 D, respectively. Mean intraocular pressure for all eyes was 14.7 ± 2.69 mm Hg. CLINICAL RELEVANCE The calculated tiger IOL was lower than reported values for adult domestic felids. Further studies evaluating actual PACD and pseudophakic refraction would help determine the appropriate IOL power to achieve emmetropia in this species.


Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3440
Author(s):  
Daniela Proverbio ◽  
Roberta Perego ◽  
Luciana Baggiani ◽  
Giuliano Ravasio ◽  
Daniela Giambellini ◽  
...  

The tiger (Panthera tigris) is an endangered species. The health of individuals is important and any data on hematological and biochemical blood values can provide valuable information; when combined with physical assessment. This data assists in both the diagnosis of disease and some conservation strategies. The behavior of wild tigers makes it is extremely difficult to obtain biological samples from free-living subjects, therefore, data collected from captive tigers is highly valuable. The aim of this study was to provide additional information for the values of hematological and serum biochemical parameters in healthy captive tigers. Blood samples were collected from 22 clinically healthy tigers (Panthera tigris). The following parameters were analyzed: glucose, urea, creatinine, alanine aminotransferase (ALT), alkaline phosphatase (ALP), total protein (TP) and red blood cells (RBCs), hemoglobin (Hb), hematocrit (Hct) and red cell indices; such as mean cell volume (MCV), mean cell Hb (MCH), mean cell Hb concentration (MCHC), platelet (PLT) and white blood cells (WBCs). The mean hematological values in our tiger population were not significantly different when compared with the same parameters in the previously studied tiger population. The mean values of RBCs and PLT were statistically significantly higher and the mean values of Hb, PCV, MCV, MCH, MCHC, and WBC were lower than the mean values obtained in previous studies on the Amur tiger. Further investigation of captive and free-living tigers is needed to identify the normal ranges for parameters in this endangered species.


Sign in / Sign up

Export Citation Format

Share Document