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2019, Oryx
The Critically Endangered Peruvian yellow-tailed woolly monkey Lagothrix flavicauda was presumed to only occur in the tropical montane cloud forests between the Marañón and Huallaga rivers in northern Peru. Here we report the discovery of a population to the south of its previously known range, in the Región Junín. During September–December 2018 we carried out transect surveys to record large mammals present near the village of San Antonio in the district of Pampa Hermosa, at 1,287–2,015 m altitude. We recorded five primate species during transect surveys. Lagothrix flavicauda was seen four times, and appeared phenotypically distinct from populations to the north, with notable white patches above each eye and a reduced yellow patch at the end of the tail. The presence of L. flavicauda in Junín extends its known geographical range over 200 km southwards from the closest previously known population in the Huánuco region, and presents a unique opportunity for the conservation of this C...
In this report we provide information on the geographical distribution and current status of the Peruvian yellow-tailed woolly monkey (Lagothrix flavicauda) and of other primates that inhabit the montane forests of the Región Huánuco. For this purpose we conducted transect censuses and interviews during the months of July, September and October 2015 and January 2016 in the montane forests of the ríos Chontayacu, Santa Martha, Monzón and Derrepente, and also in the upper basin of Río Hual-laga. The results indicate that the southern distributional limit of L. flavicauda is the Región Huánuco in the montane forests on the left bank of the Río Alto Huallaga. During the survey, we also recorded 28 groups of five species of other primates, the most frequently observed of which was Leontocebus leucogenys. In all locations surveyed except for the montane forests between the ríos Chontayacu and Magdalena, populations of L. flavicauda and other primates are in the process of local extinction, principally due to intense deforestation for agriculture, cattle ranching and timber extraction, but also due to hunting.
American Journal of Primatology
Expanded distribution and predicted suitable habitat for the critically endangered yellow-tailed woolly monkey (Lagothrix flavicauda) in Perú2023 •
The Tropical Andes Biodiversity Hotspot holds a remarkable number of species at risk of extinction due to anthropogenic habitat loss, hunting, and climate change. One of these species, the critically endangered yellow-tailed woolly monkey (Lagothrix flavicauda), was recently observed in the region Junín, 206 km south of its previously known distribution. This range extension, combined with continued habitat loss, calls for a reevaluation of the species distribution, and available suitable habitat. Here, we present novel data from surveys at 53 sites in the regions of Junín, Cerro de Pasco, Ayacucho, and Cusco. We encountered L. flavicauda at 9 sites, all in Junín, and the congeneric Lagothrix lagotricha tschudii at 20 sites, but never in sympatry. Using these new localities along with all previous geographic localities for
Primate Conservation
First Inventory of Primates in the Montane Forests of the Pasco and Ucayali Regions, Peruvian Amazon2019 •
There is no information on the primate communities of the montane forests of the Peruvian Amazon except in the northeast. The regions of Pasco and Ucayali have never been explored for the primates that occur there, which motivated us to conduct this study, to assess the conservation status of the primates and especially to determine the limits of the distribution of the Peruvian yellow-tailed woolly monkey (Lagothrix flavicauda). Linear transect censuses were conducted from July to October 2018 in six survey sites. In 709 km traveled, we saw 28 groups of five species. The Peruvian woolly monkey (Lagothrix lagoth-richa tschudii) and the Marañón white-fronted capuchin (Cebus yuracus) were the most sighted, with eight and seven groups, respectively. Lagothrix flavicauda was not recorded in any of the survey sites, but we do not rule out its presence in other areas, particularly in Pasco. Red howler monkey (Alouatta seniculus) groups averaged 3.4 members, ranging from 2 to 6. The black spider monkey (Ateles chamek) and C. yuracus were seen in larger groups. The largest of three groups of the Andean saddle-back tamarin (Leontocebus leucogenys), seen in two localities, was seven. Relative abundance was higher for the species sighted in Ucayali, the highest being A. chamek with 1.5 groups/10 km. In Huánuco, the geographic distribution of L. flavicauda ranges as far as the montane forest of the province of Pachitea to the southeast, between 1,900 and 2,800 m above sea level. The geographic distribution of L. l. tschudii on the other hand extends to the western side of the Ucayali, to the ríos Pachitea and Pichis, and includes the montane forests of Pasco, Ucayali and part of Huánuco. Deforestation and hunting are the main threats to the survival of primates and other wildlife, particularly in Pasco and Huánuco.
Neotropical Primates
Distribution and conservation status of the yellow-tailed woolly monkey (Oreonax flavicauda, Humboldt 1812) in Amazonas and San Martin, PeruPrimate Conservation
Primates in Montane Forests of the Región Amazonas, Peru: New Records and the Current Situation of Lagothrix flavicauda and Other Primates2022 •
Most of the primate studies in the montane forests of Peruvian Amazonia have been carried out in its northeastern portion, and most have focused on the yellow-tailed woolly monkey, Lagothrix flavicauda. Information gaps remain for much of the forests in this region and the primate species that are found there. Here we report on a survey of L. flavicauda (Critically Endangered) and the White-bellied Spider Monkey Ateles belzebuth (Endangered) and other primates, particularly to assess the status of their populations and identify the anthropogenic threats they face, in the Peruvian Yungas in the northeast of the Región Amazonas. We collected data to estimate abundance in terms of the number of groups detected and their size and location. A preliminary analysis was also carried out to assess anthropic activities that pose threats to the survival of the populations there. The study was conducted from June to August and October 2018. We carried out surveys along line transects and pre-existing trails in three fragments of primary forest in the villages of Flor de la Viña. Cambiopitec and Vista Alegre. In 334 km of surveying, we observed 13 groups of four species. Lagothrix flavicauda was the most frequently sighted (seven groups) and A. belzebuth the least sighted (one group). The other two species seen were the large-headed capuchin Sapajus apella macrocephalus and the Andean white-fronted capuchin Cebus yuracus. Most of the L. flavicauda groups were seen in forests near the village of Flor de la Viña. The single group of A. belzebuth was seen in Vista Alegre. With the exception of Cambiopitec, primates were sighted in extensive forest fragments. The average group size of L. flavicauda was 7.8 individuals (± 4.2; range 4 to 15). For the other species, the numbers of sightings were insufficient to estimate average size. Accordingly, L. flavicauda showed the highest relative abundance 2.42 indiv./10 km and Sapajus a. macrocephalus was the least abundant 0.84 indiv./10 km in Flor de la Viña. Deforestation for agriculture and livestock farming and hunting were the main threats to the survival of these primates. In general, primate richness, the number and size of groups, and the relative abundance that we recorded were similar to those obtained at other sites with similar human activities in the region. The presence of L. flavicauda and A. belzebuth, considered to be the most vulnerable to habitat disturbance, contributed to the local community's awareness of the importance of forest conservation, mainly in Flor de la Viña. The information obtained on the status of L. flavicauda and other primates will reinforce conservation actions at these sites, particularly Vista Alegre, where there is a Regional Conservation Area. It may also foster other sustainable activities involving the participation of local communities, such as ecotourism and agroforestry.
Primate Conservation
Primate surveys in the Maranon-Huallaga landscape, northern Peru with notes on conservationInternational Journal of Primatology
Population Density Estimates of the Critically Endangered Yellow-tailed Woolly Monkeys ( Oreonax flavicauda ) at La Esperanza, Northeastern PeruThe critically endangered yellow tailed woolly monkeys (Oreonax flavicauda, Humboldt 1812) are endemic to the cloud forests of northeastern Peru. We surveyed populations of Oreonax flavicauda in the Centro Poblado La Esperanza, Amazonas department between May 2008 and March 2009. We conducted census work in an area comprising disturbed primary cloud forest interspersed with pasture lying between 3 protected areas, all of which are known to contain populations of Oreonax flavicauda. We used standardized line transect methodology to census an area of ca. 700 ha. We also recorded group size and composition. We compared the results of transect width estimation, Krebs’ method, and an ad libitum total group count. We calculated individual densities of 8.27/km2 and 9.26/km², and group densities of 0.93/km2 and 1.04/km² using Krebs’ method and transect width estimation, respectively. Average group size was 8.9, with 1–3 adult males, 1–6 adult females, and 0–6 juveniles and infants. The results from our transect surveys coincided well with our estimated total group count. Our results are similar to those from previous studies, although differences in methodologies and site-specific environmental factors make comparison difficult, and suggest that Oreonax flavicauda is able to survive in disturbed habitat when hunting pressure is low.
Primate Conservation
Notes on the Yellow-Tailed Woolly Monkey (Oreonax flavicauda) and Its Status in the Protected Forest of Alto Mayo, Northern Peru2007 •
The Woolly Monkey
Yellow-Tailed Woolly Monkey (Lagothrix flavicauda): Conservation Status, Anthropogenic Threats, and Conservation Initiatives2014 •
So far we have collected data on the population densities (Shanee & Shanee, 2011a), species distribution (Shanee, 2011), behavioural patterns, activity budgets (Shanee & Shanee, 2011b), diet and ranging patterns (Shanee inpress) of O. flavicauda. Findings from population surveys are the first density estimates for O. flavicauda based on an extended study (conducted from May to September 2008 and November 2008 to March 2009).
Unisanta Science and Technology
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Pelatihan Strategi Komunikasi Pemasaran untuk Meningkatkan Pangsa Pasar Produk Dodol di Daerah Pasar Bengkel Kabupaten Serdang Bedagai2021 •
European Journal of Biochemistry
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Notch1 is a prognostic factor that is distinctly activated in the classical and proneural subtype of glioblastoma and that promotes glioma cell survival via the NF-κB(p65) pathway2018 •
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