1 Tahrcountry Musings

Wednesday, October 12, 2016

Hi Guys,
                Due to paucity of time and other imponderables, I am not in a position to blog regularly. I have started a WhatsApp group called Wilderness unplugged to post wildlife news. This allows me to post on the go. If you are interested in joining the group send me a request.
Have a great day

Monday, August 22, 2016

No updates for some more time

Hi guys,
             Due to personal constraints I am not in a position to post regular updates.  Hope to see you soon. Have a great time.

Friday, July 29, 2016

Taking a break

Hi Guys,
              I am taking a break for 15 days. There wont't be any updates during this period

Tuesday, July 26, 2016

Adult female ungulates: The importance getting to know about lambing habitat: Parturition, nursery, and predation sites.

Desert bighorn sheep lambing habitat: Parturition, nursery, and predation sites
Rebekah C. Karsch,James W. Cain,Eric M. Rominger and Elise J. Goldstein
The Journal of Wildlife Management,Volume 80Issue 6pages 1069–1080August 2016

Fitness of female ungulates is determined by neonate survival and lifetime reproductive success. Therefore, adult female ungulates should adopt behaviors and habitat selection patterns that enhance survival of neonates during parturition and lactation. Parturition site location may play an important role in neonatal mortality of desert bighorn sheep (Ovis canadensis mexicana) when lambs are especially vulnerable to predation, but parturition sites are rarely documented for this species. The objectives of the researchers were to assess environmental characteristics at desert bighorn parturition, lamb nursery, and predation sites and to assess differences in habitat characteristics between parturition sites and nursery group sites, and predation sites and nursery group sites. They used vaginal implant transmitters (VITs) to identify parturition sites and capture neonates. We then compared elevation, slope, terrain ruggedness, and visibility at parturition, nursery, and lamb predation sites with paired random sites and compared characteristics of parturition sites and lamb predation sites to those of nursery sites. When compared to random sites, odds of a site being a parturition site were highest at intermediate slopes and decreased with increasing female visibility. Odds of a site being a predation site increased with decreasing visibility. When compared to nursery group sites, odds of a site being a parturition site had a quadratic relationship with elevation and slope, with odds being highest at intermediate elevations and intermediate slopes. When the researchers compared predation sites to nursery sites, odds of a site being a predation were highest at low elevation areas with high visibility and high elevation areas with low visibility likely because of differences in hunting strategies of coyote (Canis latrans) and puma (Puma concolor). Parturition sites were lower in elevation and slope than nursery sites. The researchers signs off stating that understanding selection of parturition sites by adult females and how habitat characteristics at these sites differ from those at predation and nursery sites can provide insight into strategies employed by female desert bighorn sheep and other species during and after parturition to promote neonate survival. 

Sunday, July 24, 2016

Getting to know how the spatial configuration of residential development affects the foraging behavior and prey habits of top predators

Spatial characteristics of residential development shift large carnivore prey habits
Justine A. Smith,Yiwei Wan and Christopher C. Wilmers
The Journal of Wildlife ManagementVolume 80Issue 6pages 1040–1048August 2016

Understanding how anthropogenic development affects food webs is essential to implementing sustainable growth measures, but we have very little knowledge about how the spatial configuration of residential development affects the foraging behavior and prey habits of top predators. The researchers examined the influence of the spatial characteristics of residential development on prey composition in the puma (Puma concolor). They located the prey remains of kills from 32 pumas fitted with global positioning system (GPS) satellite collars to determine the housing characteristics most influencing prey size and species composition. They examined how differences in housing density, proximity, and clustering influenced puma prey size and diversity. They found that at both local (150 m) and regional (1 km) spatial scales surrounding puma kill sites, housing density (but not the clustering of housing) was the greatest contributor to puma consumption of small prey,which primarily comprised human commensals or pets. The species-specific relationships between housing density and prey occupancy and detection rates assessed using camera traps were not always similar to those between housing density and proportions of diet, suggesting that pumas may exercise some diet selectivity. The influence of development on puma diet may affect puma disease risk, energetics, and demographics because of altered species interactions and prey-specific profiles of energetic gain and cost. The researchers say their results can help guide future land-use planners seeking to minimize the impacts of development on wild species interactions and community dynamics.

Friday, July 22, 2016

Want protection from malaria? Here is an unlikely recipe. Sleep with a chicken next to your bed

A study by Swedish University of Agricultural Sciences and Addis Ababa University, reported in the open access Malaria Journal, has shown that malaria-transmitting mosquitoes actively avoid feeding on certain animal species such as chickens, using their sense of smell. The scientists say odours emitted by species such as chickens could provide protection for humans at risk of mosquito-transmitted diseases.

To find out which species the mosquitoes prefer, the research team collected data on the population of human and domestic animals in three Ethiopian villages. They also collected blood-fed mosquitoes to test for the source of the blood that the mosquitoes had fed on. People living in the areas in which the research was conducted share their living quarters with their livestock. The researchers found that while Anopheles arabiensis strongly prefers human over animal blood when seeking hosts indoors, it randomly feeds on cattle, goats and sheep when outdoors, but avoids chickens in both settings, despite their relatively high abundance.

Thursday, July 21, 2016

Scientists urge replacement of animals in antibody production

The global antibody industry is worth 80 billion dollars and relies heavily on animals to produce the antibodies that are used to detect the vast range of molecules indicative of state of health, safety or the environment.Scientists from the Universities of Nottingham, Toronto, Utrecht and Lund in Sweden say millions of animals are still being authorised for routine scientific procedures when there is a tried and tested alternative. They add that the use of animals in consumer society is effectively 'hidden' and products assumed to be 'animal-friendly' are mere ruse. Animal friendly antibody production technique using bacteriophage viruses instead of live animals is being overlooked.
The scientists are proposing a seven point EU led action plan by the wider scientific community and biotechnology industry.
• The replacement of animal immunisation methods for antibody production, including the import of antibodies and antibody-containing products unless it can be demonstrated on a case-by-case basis that Animal Friendly affinity reagents (AFAs) cannot be applied.
• An expert working group should be established to set up a roadmap for moving away from animal immunisation-based techniques for antibody production, in light of the scientific feasibility and commercial availability of AFAs.
• Implementation programmes should be set up to facilitate the transfer of establishments to the new technology. These should include centres of excellence for training in AFA-based technologies to ensure that antibody producers are fully supported.
• Measures should be taken to ensure that animal-derived antibodies manufactured outside the EU adhere to European standards to avoid ethics dumping in regions where animal welfare is less well regulated.
• The European Union Reference Laboratory for alternatives to animal testing (EURL ECVAM) should extend its field of activities with its international collaborative partners to include the production of AFAs and their subsequent use.
• EU and national agencies who are committed to the 3Rs and who execute EU regulations at an operational level for the commercial production of cosmetics, medicines, household products, and food or to safeguard our health or the environment should reinforce this action and no longer permit the import or use of animal-derived antibodies and antibody-containing products aimed to monitor, detect, diagnose, or extract targets of interest.
• Subsequent reports from the Commission to the Council and the European Parliament on the statistics on the number of animals used for experimental and other scientific purposes should include data on the use of animals for antibody production as an independent category.

Details appear in the latest issue of journal Trends in Biotechnology. Read it HERE

Wednesday, July 20, 2016

Urban pigeons might come in handy to detect lead and other toxic compounds in cities

 A new study of pigeons by Fayme Cai and Rebecca Calisi in New York City shows that levels of lead in the birds track with neighborhoods where children show high levels of lead exposure. In their study the researchers used feral pigeon (Columba livia) as a lead bioindicator in New York City. They collected blood lead level records from 825 visibly ill or abnormally behaving pigeons from various NYC neighborhoods between 2010 and 2015. They found that blood lead levels were significantly higher during the summer, an effect reported in children. Even miniscule amounts of lead are extremely detrimental to child health. 
The researchers provide support for the use of the feral pigeon as a bioindicator of environmental lead contamination for the first time in the U.S. and for the first time anywhere in association with rates of elevated blood lead levels in children. They say this information has the potential to enable measures to assess, strategize, and potentially circumvent the negative impacts of lead and other environmental contaminants on human and wildlife communities. The research provide a powerful example of how monitoring pigeon biology may help us to better understand the location and prevalence of lead, with the aim of providing greater awareness and devising prevention measures.

Details appear in the latest edition of journal Chemosphere

Saturday, July 16, 2016

Using an incentive-based strategy as a complement to command-and-control, community- and norm-based strategies may help achieve greater conservation effectiveness

Effects of payments for ecosystem services on wildlife habitat recovery
Mao-Ning Tuanmu,Andrés Viña,Wu Yang,Xiaodong ChenAshton M. Shortridge and Jianguo Liu
Conservation Biology, Volume 30, Issue 4, pages 827–835, August 2016

Serous debates on policies that might simultaneously promote sustainable management of protected areas and improve the living conditions of local people have been going on round the world. This has been engendered by conflicts between local people's livelihoods and conservation that has stymied many well intended conservation measures. The authors of this paper say, few empirical assessments of the effectiveness of government-sponsored payments-for-ecosystem-services (PES) schemes have been conducted, and even fewer assessments have directly measured their effects on ecosystem services. Here the researchers conducted an empirical and spatially explicit assessment of the conservation effectiveness of one of the world's largest PES programs through the use of a long-term empirical data set, a satellite-based habitat model, and spatial autoregressive analyses on direct measures of change in an ecosystem service (i.e., the provision of wildlife species habitat). Giant panda (Ailuropoda melanoleuca) habitat improved in Wolong Nature Reserve of China after the implementation of the Natural Forest Conservation Program. The improvement was more pronounced in areas monitored by local residents than those monitored by the local government, but only when a higher payment was provided. The results suggest that the effectiveness of a PES program depends on who receives the payment and on whether the payment provides sufficient incentives. As engagement of local residents has not been incorporated in many conservation strategies elsewhere in China or around the world, the results also suggest that using an incentive-based strategy as a complement to command-and-control, community- and norm-based strategies may help achieve greater conservation effectiveness and provide a potential solution for the park versus people conflict.

Friday, July 15, 2016

American black bears may be able to recognize from photographs things they know in real life

 Many animals show what is called “picture-object recognition”, in which they respond to pictures and their corresponding real-life objects in similar ways .A study which involved a black bear (Ursus americanus),   called Migwan and a computer screen has come up with the finding that American black bears may be able to recognize things they know in real life, such as pieces of food or humans, when looking at a photograph of the same thing. The study was led by Zoe Johnson-Ulrich and Jennifer Vonk of Oakland University in the US.
Migwan was first presented with two sets of objects new to her. Her ability to recognize these later, when presented with photographs including the items she had learned, was then assessed. In a reverse task, she was also trained on the photographs of two different sets of objects and tested on the transfer to real objects. Migwan was able to recognize, on a photograph, the visual features of objects or natural stimuli she already knew. It is an ability that bears share with hens, rhesus monkeys, pigeons, tortoises and horses.
Johnson-Ulrich and Vonk however caution that the ability of bears to recognize features of real objects within 2D-images does not necessarily mean they understand the representational nature of photographs. It is also still uncertain how well bears are able to recognize tangible objects which they first saw on a photograph before being introduced to the real thing. Further research using other bears is therefore needed to verify if the animals can transfer information from pictures to objects, too.

Details appear in the latest edition of journal Animal Cognition.

The above post is prepared from materials provided by Springer. 

Thursday, July 14, 2016

The role of behavioral ecology in improving wildlife conservation and management

A systematic survey of the integration of animal behavior into conservation
Oded Berger-Tal,Daniel T. Blumstein,Scott Carroll,Robert N. Fisher,Sarah L. Mesnick,Megan A. Owen,David Saltz,Colleen Cassady St. Claire and Ronald R. Swaisgood
Conservation Biology,Volume 30, Issue 4, pages 744–753, August 2016

The role of behavioral ecology in improving wildlife conservation and management has been the subject of lot of discussions in recent years. Here the researchers sought to answer 2 foundational questions about the current use of behavioral knowledge in conservation: To what extent is behavioral knowledge used in wildlife conservation and management, and how does the use of animal behavior differ among conservation fields in both frequency and types of use? They searched the literature for intersections between key fields of animal behavior and conservation and created a systematic heat map (i.e., graphical representation of data where values are represented as colors) to visualize relative efforts. Some behaviors, such as dispersal and foraging, were commonly considered (mean [SE] of 1147.38 [353.11] and 439.44 [108.85] papers per cell, respectively). In contrast, other behaviors, such as learning, social, and anti-predatory behaviors were rarely considered (mean [SE] of 33.88 [7.62], 44.81 [10.65], and 22.69 [6.37] papers per cell, respectively). In many cases, awareness of the importance of behavior did not translate into applicable management tools. Their results challenge previous suggestions that there is little association between the fields of behavioral ecology and conservation and reveals tremendous variation in the use of different behaviors in conservation. They recommend that researchers focus on examining underutilized intersections of behavior and conservation themes for which preliminary work shows a potential for improving conservation and management, translating behavioral theory into applicable and testable predictions, and creating systematic reviews to summarize the behavioral evidence within the behavior-conservation intersections for which many studies exist.

Wednesday, July 13, 2016

Latest Elephant Trade Information System (ETIS) analysis

Latest Elephant Trade Information System (ETIS) analysis, prepared by TRAFFIC on behalf of Parties to CITES is now available

ETIS is a comprehensive information system to track illegal trade in ivory and other elephant products. It shares the same objectives as those set out for MIKE in Resolution Conf. 10.10 (Rev. CoP16), with the difference that its aim is to record and analyse levels and trends in illegal trade, rather than the illegal killing of elephants. The central component of ETIS is a database on seizures of elephant specimens that have occurred anywhere in the world since 1989. The seizure database is supported by a series of subsidiary database components that assess law enforcement effort and efficiency, rates of reporting, domestic ivory markets and background economic variables. These database components are time-based and country-specific and are used to mitigate factors that cause bias in the data and might otherwise distort the analytical results. The subsidiary database components also assist in interpreting and understanding the results of the ETIS analyses. Since its inception, ETIS has been managed by TRAFFIC on behalf of the CITES Parties and is currently housed at the TRAFFIC East/Southern Africa office in Harare, Zimbabwe.

Read the report HERE