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PubMed Journals Articles About "Factors Influencing Wild Chimpanzee Troglodytes Verus Relative Abundance" RSS

03:37 EDT 25th June 2019 | BioPortfolio

Factors Influencing Wild Chimpanzee Troglodytes Verus Relative Abundance PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Factors Influencing Wild Chimpanzee Troglodytes Verus Relative Abundance articles that have been published worldwide.

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Showing "Factors influencing wild chimpanzee troglodytes verus relative abundance" PubMed Articles 1–25 of 23,000+

Factors influencing wild chimpanzee (Pan troglodytes verus) relative abundance in an agriculture-swamp matrix outside protected areas.

Human population growth and anthropogenic activities are exacerbating pressures on biodiversity globally. Land conversion is aggravating habitat fragmentation and non-human primates are increasingly compelled to live in forest-agricultural mosaics. In Sierra Leone, more than half of the wild chimpanzee population (Pan troglodytes verus) occurs outside protected areas and competes for resources with farmers. Our study area, in the Moyamba district in south-western Sierra Leone, is practically devoid of fores...


Informing Protection Efforts for Critically Endangered Chimpanzees (Pan troglodytes verus) and Sympatric Mammals amidst Rapid Growth of Extractive Industries in Senegal.

Updated information on Critically Endangered western chimpanzees (Pan troglodytes verus) in Senegal is urgently needed, given that gold mining is rapidly transforming landscapes and livelihoods. Specifically, biodiversity assessments will better elucidate the chimpanzee extinction risk here and yield baselines for monitoring. We compared mammal species richness between Fongoli (unprotected) and Assirik in Niokolo-Koba National Park to assess the efficacy of the only nationally protected area where chimpanze...

A comprehensive analysis of chimpanzee (Pan troglodytes)-specific LINE-1 retrotransposons.

Long interspersed element-1 (LINE-1 or L1) is one of the most abundant retrotransposons in the primate genomes and has contributed to their genome diversity and variations during the primate evolution. Among primate L1 subfamilies, L1Pt subfamilies include Pan troglodytes-specific L1s. L1Pt elements have been successfully expanded in the chimpanzee genome since the divergence of human and chimpanzee lineages. However, only a few full-length L1Pt copies were previously detected in the chimpanzee genome due t...


Validating camera trap distance sampling for chimpanzees.

The extension of distance sampling methods to accommodate observations from camera traps has recently enhanced the potential to remotely monitor multiple species without the need of additional data collection (sign production and decay rates) or individual identification. However, the method requires that the proportion of time is quantifiable when animals can be detected by the cameras. This can be problematic, for instance, when animals spend time above the ground, which is the case for most primates. In ...

Tropical rainforest flies carrying pathogens form stable associations with social non-human primates.

Living in groups provides benefits but incurs costs such as attracting disease vectors. For example, synanthropic flies associate with human settlements, and higher fly densities increase pathogen transmission. We investigated whether such associations also exist in highly mobile non-human primate groups (NHP). We studied flies in a group of wild sooty mangabeys (Cercocebus atys atys) and three communities of wild chimpanzees (Pan troglodytes verus) in Taï National Park, Côte d'Ivoire. We observed markedl...

A comparison of methods to determine chimpanzee home-range size in a forest-farm mosaic at Madina in Cantanhez National Park, Guinea-Bissau.

Human activities impact the distribution of numerous species. Anthropogenic habitats are often fragmented, and wildlife must navigate through human-influenced and 'natural' parts of the landscape to access resources. Different methods to determine the home-range areas of nonhuman primates have not considered the additional complexities of ranging in anthropogenic areas. Here, using 6 months of spatial data on the distribution of chimpanzee presence (feces, feeding traces, nests, opportunistic encounters; n...

Does group size matter? Captive chimpanzee (Pan troglodytes) behavior as a function of group size and composition.

The National Institutes of Health and the Association of Zoos and Aquariums recommend that captive chimpanzees be housed in multi-male, multi-female, age-diverse groups of no less than seven individuals. These recommendations are rooted in the idea that captive chimpanzee groups should be modeled after free-ranging, wild, fission-fusion chimpanzee societies. However, captive chimpanzees do not face the environmental pressures faced by wild chimpanzees, including food scarcity, inter-group competition, and p...

Heterochrony in chimpanzee and bonobo spatial memory development.

The emergence of human-unique cognitive abilities has been linked to our species' extended juvenile period. Comparisons of cognitive development across species can provide new insights into the evolutionary mechanisms shaping cognition. This study examined the development of different components of spatial memory, cognitive mechanisms that support complex foraging, by comparing two species with similar life history that vary in wild ecology: bonobos (Pan paniscus) and chimpanzees (Pan troglodytes).

Impact of water quality on the microbial diversity in the surface water along the Three Gorge Reservoir (TGR), China.

The Three Gorges Reservoir (TGR), one of the world's largest reservoirs, has crucial roles in flood control, power generation, and navigation. The TGR is contaminated because of the human activities, and how the contaminated water influences the distribution of the microbial community have not been well studied. In this study, we collected 41 freshwater samples from 13 main dwelling districts along the TGR to investigate the water quality, the distribution of the microbial community, and how water quality a...

Identification of factors affecting rice yield gap in southwest China: An experimental study.

Knowledge about the relative importance of influencing-factors on rice yield gap is crucial to rice production, especially in southwestern China where topography is extremely complicated. In the current study, the data of rice yield from a total of 76 experiments were collected in 2008 and 2009 in Chongqing, southwest China. For each location, two treatments with fertilizer and without fertilizer were carried out, each treatment was performed with three replications, and yield gap was calculated using ferti...

Host genetic determinants of the gut microbiota of wild mice.

Identifying a common set of genes that mediate host-microbial interactions across populations and species of mammals has broad relevance for human health and animal biology. However, the genetic basis of the gut microbial composition in natural populations remains largely unknown outside of humans. Here, we used wild house mouse populations as a model system to ask three major questions: (1) Does host genetic relatedness explain inter-individual variation in gut microbial composition? (2) Do population diff...

On reliable identification of factors influencing wildlife-vehicle collisions along roads.

Wildlife-vehicle collisions (WVCs) pose a serious global issue. Factors influencing the occurrence of WVC along roads can be divided in general into two groups: spatially random and non-random. The latter group consists of local factors which act at specific places, whereas the former group consists of globally acting factors. We analyzed 27,142 WVC records (roe deer and wild boar), which took place between 2012 and 2016 on Czech roads. Statistically significant clusters of WVCs occurrence were identified u...

Nutrient removal through pyrrhotite autotrophic denitrification: Implications for eutrophication control.

This study investigated nutrient removal kinetics and main influencing factors of natural pyrrhotite autotrophic denitrification (PAD), and nutrient removal performance and the microbial community in the PAD biofilter (PADB). Results demonstrated that both NO and PO in wastewater were nearly completely removed, and biological N removal and chemical P removal took place simultaneously in the PAD process. NO removal kinetics of the PAD can be described with half-order kinetics. The PAD was effective across a ...

High-throughput profiling of antibiotic resistance gene dynamic in a drinking water river-reservoir system.

The rapid construction of reservoir in river basin generates a river-reservoir system containing an environmental gradient from river system to reservoir system in modern aquatic environment worldwide. Profiles of antibiotic resistance genes (ARGs) in river-reservoir system is essential to better understand their dynamic mechanisms in aquatic eco-environment. In this study, we investigated the diversity, abundance, distribution of ARGs and mobile genetic elements (MGEs) in a representative river-reservoir s...

In vitro effects of tongue sole LPXRFa and kisspeptin on relative abundance of pituitary hormone mRNA and inhibitory action of LPXRFa on kisspeptin activation in the PKC pathway.

Results of previous studies indicated the existence of LPXRFa, the piscine ortholog of gonadotropin-inhibitory hormone (GnIH), and kisspeptin (Kiss2) in tongue sole (Cynoglossus semilaevis), and that LPXRFa exerts an inhibitory effect on Kiss2 activation in the protein kinase A (PKA) pathway. The functions in the control of reproduction and whether LPXRFa antagonizes the action of Kiss2 by inhibiting the protein kinase C (PKC) pathway, however, are still unknown. In the present study, there was an initial i...

Salinity as a predominant factor modulating the distribution patterns of antibiotic resistance genes in ocean and river beach soils.

Growing evidence points to the pivotal role of the environmental factors in influencing the transmission of antibiotic resistance genes (ARGs) and the propagation of resistant human pathogens. However, our understanding of the ecological and evolutionary environmental factors that contribute to development and dissemination of antibiotic resistance is lacking. Here, we profiled a wide variety of ARGs using the high-throughput quantitative PCR analysis in 61 soil samples collected from ocean and river beache...

The Factors Influencing Meal Satisfaction in the Elderly: Systematic Review and Meta-analysis.

To identify factors influencing meal satisfaction in the elderly.

Association Between the Success of an Invasive Macrophyte, Environmental Variables and Abundance of a Competing Native Macrophyte.

The success of invasive species depends on the overcoming of abiotic and biotic filters. Abiotic variables likely have greater relative importance over invasion at broad spatial scales, while biotic interactions are more important at fine spatial scales. In this study, we tested the hypotheses that (i) the abundance of the invasive is more correlated with abiotic factors than with competing native species at broad spatial grain; and that (ii) abundance is more correlated with competing native species than...

Factors influencing health profession students' willingness to practice in rural regions of Bosnia and Herzegovina: a cross-sectional study.

The literature indicates different factors influencing recruitment of health professional students to work in rural areas. The purpose of this study is to explore the willingness of health profession students in the Faculty of Medicine Foca, University of East Sarajevo, Bosnia and Herzegovina to work in a rural area following graduation and the factors influencing incentives to pursue a rural career.

Factors influencing selection of an interventional radiology training program.

To understand factors influencing the choice and ranking of Interventional Radiology (IR) training programs among a cohort of medical students and diagnostic radiology residents pursuing careers in IR.

Factors driving the distribution and role of AOA and AOB in Phragmites communis rhizosphere in riparian zone.

Ammonia oxidation, mainly driven by ammonia-oxidizing archaea (AOA) and bacteria (AOB), plays an important role in determining the rate of nitrification in riparian zones. However, the underlying factors driving the distribution and activity of AOA and AOB in riparian zones, especially in the rhizosphere of Phragmites communis remain unknown. This study revealed the dominance of AOA in ammonium oxidization with higher abundance and activity in both rhizosphere and bulk soil in summer and winter over AOB in ...

Relationships between humans and ungulate prey shape Amur tiger occurrence in a core protected area along the Sino-Russian border.

Large carnivore populations are globally threatened by human impacts. Better protection could benefit carnivores, co-occurring species, and the ecosystems they inhabit. The relationship between carnivores and humans, however, is not always consistent in areas of high human activities and is often mediated through the effects of humans on their ungulate prey. To test assumptions regarding how prey abundance and humans affect carnivore occurrence, density, and daily activity patterns, we assessed tiger-prey-h...

Rapamycin suppresses postnatal muscle hypertrophy induced by myostatin-inhibition accompanied by transcriptional suppression of the Akt/mTOR pathway.

Myostatin (MSTN) is a well-known negative growth factor of muscle mass, and studies have shown that MSTN-inhibition would be a potential strategy to treat muscle atrophy seen in various clinical conditions. Recent studies suggest that MSTN-inhibition induces skeletal muscle hypertrophy through up-regulation of the anabolic Akt/mTOR pathway. Therefore, it was hypothesized that the muscle hypertrophy induced by MSTN-inhibition would be suppressed by the administration of rapamycin (RAP), a mTOR suppressor. A ...

Wet depositional fluxes of Be and Pb and their influencing factors at two characteristic cities of China.

The atmospheric depositional fluxes of Be and Pb in Yueyang and Hengyang were measured by the γ spectrum analysis method and their influencing factors were discussed. Results are summarized as follows: the variation ranges and average values of Be depositional fluxes are very close to each other in the two characteristic sampling regions, but not for Pb. In the same sampling region, there is a strong positive linear correlation between the depositional fluxes of two nuclides and their monthly variations ar...

Sleep and prematurity: sleep outcomes in preterm children and influencing factors.

Sleep undergoes changes from birth to adulthood, while sleep disorders are associated with various cognitive deficiencies in childhood. In parallel, prematurity is known to predispose to poor neurodevelopmental outcomes. Our aim is to provide literature data about factors influencing sleep in the premature infants and sleep outcomes in this population.


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