21 research outputs found
Ecology of Argali in Ikh Nartiin Chuluu, Dornogobi Aymag
Argali sheep (Ovis ammon) are listed as threatened in both Mongolia and internationally. Yet, little is known about the biology and ecology of this species. Available data suggests that Argali in Mongolia are declining due to direct poaching and competition with domestic livestock. We initiated several research projects to better understand and conserve the species. In this report we discuss Argali ecology using radio telemetry.
We captured and radio-collared 36 Argali using drive-nets, lamb captures, and dating from 2000–2004. Fifteen collared animals have died: 2 due to capture techniques, 8 from predation, 1 from starvation and exposure, 1 from disease, 1 due to maternal neglect, and 2 of unknown causes. In addition, 1 collar ceased working and 4 others dropped off prematurely. We have collected more than 1,040 locations through mid-May 2004. The majority of the Argali were captured in the northern portion of Ikh Nart. Animals have primarily restricted their movements to that area and have not exhibited seasonal movement patterns. Mean home range size for 17 animals with sufficient data (\u3e 45 days with locations) was 57±3.7 km2 (range = 30– 80 km2) using the 100% minimum convex polygon method, with areas of predicted occurrence of 76±5.3km2 for 95% kernel, 32±3.7 km2 for 75% kernel, 11±1.6 km2 for 50% kernel, and 3.8±0.5 km2 for 25% home ranges. Predation was the main cause (72.7%) of mortality in the collared animals for which cause of death could be determined (non-study related)
Introduction of GI Wellness Committee to reduce GI fellow burnout and improve wellness.
Gastroenterology (GI) fellowship is an arduous process which predisposes fellows to fatigue and burnout.
Our baseline survey showed a large number of our fellows to be in danger of burnout.
Aims for Improvement To improve the overall wellness of GI fellows, identify stressors and reduce incidence of burnout. The goal for the first 6 months of operation is to demonstrate improvement in Mini ReZ survey scores by 25% at starting from Sept 1st, 2020
Acute Systemic Infection-Associated Russell Body Gastroesophagitis: A Case Report and Literature Review
Russell body esophagitis/gastritis (RBG) is a rare gastrointestinal inflammatory condition characterized by accumulation of plasma cells containing dense eosinophilic cytoplasmic inclusions, i.e., Russell bodies. Herein, we report a case of RBG in a patient with a systemic inflammation background. A 61-year-old female presented with oral infection. Upper gastrointestinal endoscopy revealed patchy salmon-colored esophageal mucosa proximally to the gastroesophageal junction, suggestive of “Barrett’s esophagus”. Histologic examination of the biopsy tissue from the lower esophagus showed diffuse lymphoplasmacytic infiltration with abundant admixed enlarged plasma cells (Mott cells) containing bright eosinophilic, round, dense, homogenous inclusions (Russell bodies) in cytoplasm. Immunohistochemical study demonstrated membranous staining of CD138 in the Mott cells, while immunoglobulin light chain in situ hybridization revealed positivity of only kappa light chain, indicating kappa light chain restriction and clonality. A proton-pump inhibitor therapy was initiated, but the patient passed away due to generalized infection. Our case suggests that Russell body esophagitis/gastritis (RBG) can be a gastrointestinal presentation associated with acute systemic infection
Behavioral responses of terrestrial mammals to COVID-19 lockdowns
DATA AND MATERIALS AVAILABILITY : The full dataset used in the final analyses (33) and associated code (34) are available at Dryad. A subset of the spatial coordinate datasets is available at Zenodo (35). Certain datasets of spatial coordinates will be available only through requests made to the authors due to conservation and Indigenous sovereignty concerns (see table S1 for more information on data use restrictions and contact information for data requests). These sensitive data will be made available upon request to qualified researchers for research purposes, provided that the data use will not threaten the study populations, such as by distribution or publication of the coordinates or detailed maps. Some datasets, such as those overseen by government agencies, have additional legal restrictions on data sharing, and researchers may need to formally apply for data access. Collaborations with data holders are generally encouraged, and in cases where data are held by Indigenous groups or institutions from regions that are under-represented in the global science community, collaboration may be required to ensure inclusion.COVID-19 lockdowns in early 2020 reduced human mobility, providing an opportunity to disentangle its effects on animals from those of landscape modifications. Using GPS data, we compared movements and road avoidance of 2300 terrestrial mammals (43 species) during the lockdowns to the same period in 2019. Individual responses were variable with no change in average movements or road avoidance behavior, likely due to variable lockdown conditions. However, under strict lockdowns 10-day 95th percentile displacements increased by 73%, suggesting increased landscape permeability. Animals’ 1-hour 95th percentile displacements declined by 12% and animals were 36% closer to roads in areas of high human footprint, indicating reduced avoidance during lockdowns. Overall, lockdowns rapidly altered some spatial behaviors, highlighting variable but substantial impacts of human mobility on wildlife worldwide.The Radboud Excellence Initiative, the German Federal Ministry of Education and Research, the National Science Foundation, Serbian Ministry of Education, Science and Technological Development, Dutch Research Council NWO program “Advanced Instrumentation for Wildlife Protection”, Fondation SegrĂ©, RZSS, IPE, Greensboro Science Center, Houston Zoo, Jacksonville Zoo and Gardens, Nashville Zoo, Naples Zoo, Reid Park Zoo, Miller Park, WWF, ZCOG, Zoo Miami, Zoo Miami Foundation, Beauval Nature, Greenville Zoo, Riverbanks zoo and garden, SAC Zoo, La Passarelle Conservation, Parc Animalier d’Auvergne, Disney Conservation Fund, Fresno Chaffee zoo, Play for nature, North Florida Wildlife Center, Abilene Zoo, a Liber Ero Fellowship, the Fish and Wildlife Compensation Program, Habitat Conservation Trust Foundation, Teck Coal, and the Grand Teton Association. The collection of Norwegian moose data was funded by the Norwegian Environment Agency, the German Ministry of Education and Research via the SPACES II project ORYCS, the Wyoming Game and Fish Department, Wyoming Game and Fish Commission, Bureau of Land Management, Muley Fanatic Foundation (including Southwest, Kemmerer, Upper Green, and Blue Ridge Chapters), Boone and Crockett Club, Wyoming Wildlife and Natural Resources Trust, Knobloch Family Foundation, Wyoming Animal Damage Management Board, Wyoming Governor’s Big Game License Coalition, Bowhunters of Wyoming, Wyoming Outfitters and Guides Association, Pope and Young Club, US Forest Service, US Fish and Wildlife Service, the Rocky Mountain Elk Foundation, Wyoming Wild Sheep Foundation, Wild Sheep Foundation, Wyoming Wildlife/Livestock Disease Research Partnership, the US National Science Foundation [IOS-1656642 and IOS-1656527, the Spanish Ministry of Economy, Industry and Competitiveness, and by a GRUPIN research grant from the Regional Government of Asturias, Sigrid Rausing Trust, Batubay Ă–zkan, Barbara Watkins, NSERC Discovery Grant, the Federal Aid in Wildlife Restoration act under Pittman-Robertson project, the State University of New York, College of Environmental Science and Forestry, the Ministry of Education, Youth and Sport of the Czech Republic, the Ministry of Agriculture of the Czech Republic, Rufford Foundation, an American Society of Mammalogists African Graduate Student Research Fund, the German Science Foundation, the Israeli Science Foundation, the BSF-NSF, the Ministry of Agriculture, Forestry and Food and Slovenian Research Agency (CRP V1-1626), the Aage V. Jensen Naturfond (project: Kronvildt - viden, værdier og værktøjer), the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy, National Centre for Research and Development in Poland, the Slovenian Research Agency, the David Shepherd Wildlife Foundation, Disney Conservation Fund, Whitley Fund for Nature, Acton Family Giving, Zoo Basel, Columbus, Bioparc de DouĂ©-la-Fontaine, Zoo Dresden, Zoo Idaho, KolmĂĄrden Zoo, Korkeasaari Zoo, La Passarelle, Zoo New England, Tierpark Berlin, Tulsa Zoo, the Ministry of Environment and Tourism, Government of Mongolia, the Mongolian Academy of Sciences, the Federal Aid in Wildlife Restoration act and the Illinois Department of Natural Resources, the National Science Foundation, Parks Canada, Natural Sciences and Engineering Research Council, Alberta Environment and Parks, Rocky Mountain Elk Foundation, Safari Club International and Alberta Conservation Association, the Consejo Nacional de Ciencias y TecnologĂa (CONACYT) of Paraguay, the Norwegian Environment Agency and the Swedish Environmental Protection Agency, EU funded Interreg SI-HR 410 Carnivora Dinarica project, Paklenica and Plitvice Lakes National Parks, UK Wolf Conservation Trust, EURONATUR and Bernd Thies Foundation, the Messerli Foundation in Switzerland and WWF Germany, the European Union’s Horizon 2020 research and innovation program under the Marie SkĹ‚odowska-Curie Actions, NASA Ecological Forecasting Program, the Ecotone Telemetry company, the French National Research Agency, LANDTHIRST, grant REPOS awarded by the i-Site MUSE thanks to the “Investissements d’avenir” program, the ANR Mov-It project, the USDA Hatch Act Formula Funding, the Fondation Segre and North American and European Zoos listed at http://www.giantanteater.org/, the Utah Division of Wildlife Resources, the Yellowstone Forever and the National Park Service, Missouri Department of Conservation, Federal Aid in Wildlife Restoration Grant, and State University of New York, various donors to the Botswana Predator Conservation Program, data from collared caribou in the Northwest Territories were made available through funds from the Department of Environment and Natural Resources, Government of the Northwest Territories. The European Research Council Horizon2020, the British Ecological Society, the Paul Jones Family Trust, and the Lord Kelvin Adam Smith fund, the Tanzania Wildlife Research Institute and Tanzania National Parks. The Eastern Shoshone and Northern Arapahoe Fish and Game Department and the Wyoming State Veterinary Laboratory, the Alaska Department of Fish and Game, Kodiak Brown Bear Trust, Rocky Mountain Elk Foundation, Koniag Native Corporation, Old Harbor Native Corporation, Afognak Native Corporation, Ouzinkie Native Corporation, Natives of Kodiak Native Corporation and the State University of New York, College of Environmental Science and Forestry, and the Slovenia Hunters Association and Slovenia Forest Service. F.C. was partly supported by the Resident Visiting Researcher Fellowship, IMĂ©RA/Aix-Marseille UniversitĂ©, Marseille. This work was partially funded by the Center of Advanced Systems Understanding (CASUS), which is financed by Germany’s Federal Ministry of Education and Research (BMBF) and by the Saxon Ministry for Science, Culture and Tourism (SMWK) with tax funds on the basis of the budget approved by the Saxon State Parliament. This article is a contribution of the COVID-19 Bio-Logging Initiative, which is funded in part by the Gordon and Betty Moore Foundation (GBMF9881) and the National Geographic Society.https://www.science.org/journal/sciencehj2023Mammal Research InstituteZoology and Entomolog
Siberian Ibex ( Capra sibirica ) Home Ranges in Ikh Nart Nature Reserve, Mongolia: Preliminary Findings
Siberian ibex (
Capra sibirica
) remain poorly understood, as little is known about their ecology
. W
e
began studying ibex in Ikh Nart Nature Reserve, Dornogobi
Aimag, Mongolia to better understand the
species’
ecological needs and threats. In this paper we report on home range and core range sizes.
We
captured 27 ibex and fi
t them with radio telemetry collars using drive nets for adults and juveniles (
n
= 22) and hand captures for neonatal kids (
n
= 5
). W
e collected 1,029 locations from September 2003
to February 2007. Throughout the study, 9 ibex with 40+ fi
xe
s used mean, annual home range sizes of
3,115.5 ± 504.2 ha using the Minimum Convex Polygon method. Home ranges calculated using the fi
xe
d
kernel method were smaller: 475.9 ± 14.7 ha for 50% kernel and 1,808.0 ± 88.1 ha for 95% kernel. Ibex
from different demographic groups (males vs. females and juveniles vs. adults) used remarkably similar
home and core ranges; we found no signifi
ca
nt differences among any demographic groups.
Although
not quantifi
ed
, ibex mostly restricted their activities to areas with steep cliffs and rocky outcrops and
home ranges overlapped extensively
Argali Ecology in Ikh Nar tyn Chuluu Natur e Reserve: Pr eliminar y Findings
Little is known about the ecology of ar
gali (
Ovis ammon
), a species listed as threatened in Mongolia
and internationally
. We initiated research to better understand the species’
ecology and develop a
conservation plan for the species. Here we report on preliminary finding from a radio telemetry study of
argali ecology
. We captured and radio collared 22 ar
gali, using drive nets, lamb captures, and darting
from 2000-2003. Eight collared animals have died: 2 due to capture techniques, 4 from predation, 1 from
starvation and exposure, and 1 of unknown (not predation) causes.
We collected 633 locations on the 22
argali through September 2003, but acquired suf
ficient data for analyses for only 12 animals thus far
.
Animals primarily restricted their movements to the northern portion of Ikh Nartyn Chuluu Nature Reserve,
and have not exhibited seasonal movement patterns. Mean home ranges were 47.46 ±4.21 km
2
(Range =
29.96 – 75.00 km
2
) using the 100% minimum convex polygon method, with smaller areas of predicted
occurrence (62.03 ±4.84 km
2
for 95% kernel, 23.76 ±3.96 km
2
for 75% kernel and 9.36 ±1.61 km
2
for
50% kernel home ranges). Predation by domestic dogs, previously unrecorded was an important early
finding of our work
The preparation of 3-substituted-1,5-dibromopentanes as precursors to heteracyclohexanes
The methodology to prepare 3-substituted 1,5-dibromopentanes I and their immediate precursors, which include 3-substituted 1,5-pentanediols VII or 4-substituted tetrahydropyrans VIII, is surveyed. Such dibromides I are important intermediates in the preparation of liquid crystalline derivatives containing 6-membered heterocyclic rings. Four dibromides 1a–1d containing simple alkyl and more complex fragments at the 3-position were prepared. 3-Propyl- and 3-pentyl-pentane-1,5-diol (2a,b) were prepared starting from either glutaconate or malonate diesters, while tetrahydropyrans 3c and 3d were obtained from tetrahydro-4H-pyran-4-one. The advantages and disadvantages of each route are discussed. Dibromides 1c and 1d were used to prepare sulfonium zwitterions 11c and 11d