Gharials ( Gavialis gangeticus ) in Bardiya National Park, Nepal: Population, habitat and threats

2021 ◽  
Author(s):  
Ashish Bashyal ◽  
Sandeep Shrestha ◽  
Kishor P. Luitel ◽  
Bhupendra P. Yadav ◽  
Bed Khadka ◽  
...  
Keyword(s):  
National Park ◽  
Gavialis Gangeticus

scholarly journals Some Helminth Parasites of Gharial from Chitwan National Park, Nepal

2015 ◽  
Vol 15 (2) ◽  
pp. 37-40 ◽  
Author(s):  
Prakash Mani Kumal ◽  
Mahendra Maharjan
Keyword(s):  
Prevalence Rate ◽  
National Park ◽  
Science And Technology ◽  
Helminth Parasites ◽  
Chitwan National Park ◽  
The Dead ◽  
Gavialis Gangeticus

A study on helminth parasites on captive gharial (Gavialis gangeticus) was conducted during July-December 2012 at Gharial Breeding Centre, Kasara, Chitwan National Park to isolate, identify and find out their prevalence. Dead gharial hatchlings were collected directly from the centre in fresh and frozen conditions. Out of 85 samples   examined, 40 samples 47.06% as prevalence rate of helminth parasites. During the study three helminth parasites were first reported from the gharials of Nepal; Pentastomid (Sebekia sp.), Capillarioids and Ascaridoids. The dead hatchlings were found to be infected with Pentastomid (41.17%), Ascaridoids (7.05%), Capillarioids (1.17%), Proctocaecum gairhei (3.52%) and Exotidendrium sp. (36.47%). In the month of December helminth parasites showed highest prevalence; Sebekia sp. (100%) and Proctocaecum gairhei (75%) and Exotidendrium sp. (100%) and the lowest prevalence in the month of July; Sebekia sp. (4%), Capillarioids (4%) and Exotidendrium sp. (8%).DOI: http://dx.doi.org/njst.v15i2.12111Nepal Journal of Science and Technology Vol. 15, No.2 (2014) 37-40

scholarly journals Population, Basking and Hatching Success of Gavialis gangeticus in Narayani River, Chitwan National Park, Nepal

2015 ◽  
Vol 27 ◽  
pp. 1-11 ◽  
Author(s):  
Sunil Lal Rajbhandari ◽  
Paras Mani Acharya
Keyword(s):  
Deep Water ◽  
National Park ◽  
Hatching Success ◽  
Main Channel ◽  
Habitat Conditions ◽  
Human Disturbances ◽  
In The Wild ◽  
Chitwan National Park ◽  
Gavialis Gangeticus

This study was carried out to investigate the habitats and abundance of the Gharials in Narayani river of Chitwan National Park from 2012 to 2013. A total of 38 Gharials including 3 hatchlings, 8 juveniles, 12 sub-adults and 15 adults were recorded during the study period. Only one breeding male was observed reflecting the critical condition for the breeding in the wild within Chitwan National Park. The abundance of the gharial was restricted in 2 areas, namely Khoria muhan and Velaunji due to suitability of the habitat conditions and minimum human disturbances. The Basking activities in relation to depth showed that > 80 % of the Gharials selected sandy banks. Among the 2 populations, the gharials in Khoria muhan preferred shallow to moderate depth of water because of presence of braided channels in the area. In contrast, the Gharials in Velaunji select deep water course of the main channel. The park management must adopt conservation measures such as ban of fishing and regular monitoring of habitats and population to maintain long term conservation of gharials in Narayani river.J. Nat. Hist. Mus. Vol. 27, 2013: 1-11

scholarly journals Growth rate of captive Gharials Gavialis gangeticus (Gmelin, 1789) (Reptilia: Crocodylia: Gavialidae) in Chitwan National Park, Nepal

2019 ◽  
Vol 11 (15) ◽  
pp. 14998-15003
Author(s):  
Bed Bahadur Khadka ◽  
Ashish Bashyal
Keyword(s):  
Growth Rate ◽  
Growth Rates ◽  
National Park ◽  
Captive Breeding ◽  
Warm Season ◽  
Ex Situ ◽  
Annual Growth Rate ◽  
Feeding Rates ◽  
Chitwan National Park ◽  
Gavialis Gangeticus

Gharials Gavialis gangeticus have been reared in ex situ facilities in the Gharial Conservation and Breeding Center (GCBC) in Chitwan National Park of Nepal since the 1980s.  There remains a paucity of detailed information concerning their growth rates, particularly with respect to season.  We randomly selected 20 gharials (45 months old) in the GCBC, tagged them, and recorded total length (TL) and weight over three warm (April–September) and two cold (October–March) seasons between 01 April 2013 and 30 September 2015.  We also recorded amounts of fish consumed by these gharials every month over the 30-month period.  On average per season, the gharials grew by 9.48±3.63 cm (1.58cm/month) in length and gained 2.61±1.14 kg (0.43kg/month).  Growth rates were significantly higher during warm seasons.  The highest increase in both length (mean= 21.2±8.61 cm) and weight (mean =5.59±2.12 kg) occurred during the first warm season (April 2013–September 2013) of the study, and annual growth rate was also highest during the first year.  Our data indicated strong correlation between mean length and body weight.  A total of 2,103.9kg fish was consumed by 20 gharials over 30 months, for a mean consumption of 3.5kg fish per individual per month.  Mean fish consumption was also significantly higher during warm (96.99±37.35 kg) versus cold (29.83±17.09 kg) seasons.  Survival rate was 100%.  Our findings establish baseline data for growth and feeding rates of captive gharials that will be useful in making management decisions in captive breeding and rearing facilities.

Ultrastructural Localization of Phycocyanin in the Acidophilic, Thermophilic Alga, Cyanidium Caldarium

1973 ◽  
Vol 31 ◽  
pp. 462-463
Author(s):  
M. R. Edwards ◽  
J. D. Mainwaring
Keyword(s):  
Yellowstone National Park ◽  
National Park ◽  
Ultrastructural Localization ◽  
Review Of Literature ◽  
Cyanidium Caldarium ◽  
Taxonomic Rank ◽  
Thin Sections ◽  
Standard Methods ◽  
Laboratory Cultures

Although the general ultrastructure of Cyanidium caldarium, an acidophilic, thermophilic alga of questionable taxonomic rank, has been extensively studied (see review of literature in reference 1), some peculiar ultrastructural features of the chloroplast of this alga have not been noted by other investigators.Cells were collected and prepared for thin sections at the Yellowstone National Park and were also grown in laboratory cultures (45-52°C; pH 2-5). Fixation (glutaraldehyde-osmium), dehydration (ethanol), and embedding (Epon 812) were accomplished by standard methods. Replicas of frozenfracture d- etched cells were obtained in a Balzers apparatus. In addition, cells were examined after disruption in a French Press.

Evaluation of national park soundscapes based on aircraft type

2011 ◽  
Author(s):  
Levi Zitting ◽  
Britton Mace ◽  
Grant Corser
Keyword(s):  
National Park ◽  
Aircraft Type
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