Patrícia Pečnerová

Patrícia Pečnerová
University of Copenhagen · Department of Biology

PhD

About

37
Publications
16,252
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
766
Citations
Education
October 2013 - April 2018
Stockholm University
Field of study
  • Evolutionary Biology
June 2011 - June 2013
Masaryk University
Field of study
  • Zoology
July 2008 - June 2011
Masaryk University
Field of study
  • Zoology

Publications

Publications (37)
Article
Full-text available
Tropical forests of Central and South America represent hotspots of biological diversity. Tree squirrels of the tribe Sciurini are an excellent model system for the study of tropical biodiversity as these squirrels disperse exceptional distances, and after colonizing the tropics of the Central and South America, they have diversified rapidly. Here,...
Article
Full-text available
According to the nearly-neutral theory of evolution, the relative strengths of selection and drift shift in favour of drift at small population sizes. Numerous studies have analysed the effect of bottlenecks and small population sizes on genetic diversity in the MHC, which plays a central role in pathogen recognition and immune defense and is thus...
Article
While present-day taxa are valuable proxies for understanding the biology of extinct species, it is also crucial to examine physical remains in order to obtain a more comprehensive view of their behavior, social structure, and life histories [1, 2]. For example, information on demographic parameters such as age distribution and sex ratios in fossil...
Article
Full-text available
The onset of the Holocene was associated with a global temperature increase, which led to a rise in sea levels and isolation of the last surviving population of woolly mammoths on Wrangel Island. Understanding what happened with the population's genetic diversity at the time of the isolation and during the ensuing 6000 years can help clarify the ef...
Article
Full-text available
Temporal genomic data hold great potential for studying evolutionary processes such as speciation. However, sampling across speciation events would, in many cases, require genomic time series that stretch well back into the Early Pleistocene subepoch. Although theoretical models suggest that DNA should survive on this timescale¹, the oldest genomic...
Article
Full-text available
Impalas are unusual among bovids because they have remained morphologically similar over millions of years—a phenomenon referred to as evolutionary stasis. Here, we sequenced 119 whole genomes from the two extant subspecies of impala, the common ( Aepyceros melampus melampus ) and black‐faced ( A. m. petersi ) impala. We investigated the evolutiona...
Article
Full-text available
Novel genomic tools can yield information important for the conservation of threatened species. Remains of hunted individuals may provide important genomic information; however, the ethics of using remains of hunted animals for conservation research, especially remains of trophy‐hunted animals, is controversial. While there are ongoing political di...
Article
Full-text available
Predation is an important ecological process that can significantly impact the maintenance of ecosystem services. In arctic environments, the relative ecological importance of predation is thought to be increasing due to climate change, partly because of increased productivity with rising temperatures. Therefore, understanding predator–prey interac...
Preprint
Full-text available
Impalas are unusual among bovids because they have remained morphologically similar over millions of years - a phenomenon referred to as evolutionary stasis. Over the same period, other bovid lineages in Africa radiated prolifically. Here, we sequenced 119 whole genomes from the two extant subspecies of impala, the common (Aepyceros melampus melamp...
Article
Full-text available
The blue wildebeest (Connochaetes taurinus) is a keystone species in savanna ecosystems from southern to eastern Africa, and is well known for its spectacular migrations and locally extreme abundance. In contrast, the black wildebeest (C. gnou) is endemic to southern Africa, barely escaped extinction in the 1900s and is feared to be in danger of ge...
Article
Full-text available
Garbage may cause substantial environmental perturbations, in part because of its consumption by wildlife. Such consumption may have direct health implications for animals and may also influence trophic relationships. Even in pristine Arctic ecosystems, wildlife feeding in marine environments consume garbage in the form of plastic debris transporte...
Article
Genomic studies of species threatened by extinction are providing crucial information about evolutionary mechanisms and genetic consequences of population declines and bottlenecks. However, to understand how species avoid the extinction vortex, insights can be drawn by studying species that thrive despite past declines. Here, we studied the populat...
Article
Full-text available
Ancient genomes provide a tool to investigate the genetic basis of adaptations in extinct organisms. However, the identification of species-specific fixed genetic variants requires the analysis of genomes from multiple individuals. Moreover, the long-term scale of adaptive evolution coupled with the short-term nature of traditional time series data...
Article
The iconic Cape buffalo has experienced several documented population declines in recent history. These declines have been largely attributed to the late 19th century rinderpest pandemic. However, the effect of the rinderpest pandemic on their genetic diversity remains contentious, and other factors that have potentially affected this diversity inc...
Article
Full-text available
Non-invasive biological samples benefit studies that investigate rare, elusive, endangered, or dangerous species. Integrating genomic techniques that use non-invasive biological sampling with advances in computational approaches can benefit and inform wildlife conservation and management. Here, we used non-invasive fecal DNA samples to generate low...
Preprint
Non-invasive biological samples benefit studies that investigate rare, elusive, endangered, and/or dangerous species. Integrating genomic techniques that use non-invasive biological samples with advances in computational approaches can benefit and inform wildlife conservation and management. Here we present a molecular pipeline that uses non-invasi...
Article
Full-text available
Woolly mammoths had a set of adaptations that enabled them to thrive in the Arctic environment. Many mammoth-specific single nucleotide polymorphisms (SNPs) responsible for unique mammoth traits have been previously identified from ancient genomes. However, a multitude of other genetic variants likely contributed to woolly mammoth evolution. In thi...
Article
Full-text available
Rapid and cost-effective retrieval of endogenous DNA from ancient specimens remains a limiting factor in palaeogenomic research. Many methods have been developed to increase ancient DNA yield, but modifications to existing protocols are often based on personal experience rather than systematic testing. Here, we present a new silica column-based ext...
Article
Full-text available
Although genetic diversity has been recognized as a key component of biodiversity since the first Convention on Biological Diversity (CBD) in 1993, it has rarely been included in conservation policies and regulations. Even less appreciated is the role that ancient and historical DNA (aDNA and hDNA, respectively) could play in unlocking the temporal...
Article
Full-text available
To understand the causes and implications of an extinction event, detailed information is necessary. However, this can be challenging when working with poorly resolved paleontological data sets. One approach to increase the data resolution is by combining different methods. In this study, we used both radiocarbon and genetic data to reconstruct the...
Article
Large carnivores are generally sensitive to ecosystem changes because their specialized diet and position at the top of the trophic pyramid is associated with small population sizes. Accordingly, low genetic diversity at the whole-genome level has been reported for all big cat species, including the widely distributed leopard. However, all previous...
Article
Full-text available
Background After over a decade of developments in field collection, laboratory methods and advances in high-throughput sequencing, contamination remains a key issue in ancient DNA research. Currently, human and microbial contaminant DNA still impose challenges on cost-effective sequencing and accurate interpretation of ancient DNA data. Results He...
Preprint
Full-text available
Background After over a decade of developments in field collection, laboratory methods and advances in high-throughput sequencing, contamination remains a key issue in ancient DNA research. Currently, human and microbial contaminant DNA still impose challenges on cost-effective sequencing and accurate interpretation of ancient DNA data. Results He...
Article
Full-text available
A pioneer comprehensive study of several diminutive last‐generation woolly mammoth teeth (M3) found on the coast of the East Siberian Sea between the mouths of the Alazeya and Malaya Kuropatoch'ya rivers was conducted. Two teeth belonged to one individual. These teeth have a similar lamellar frequency and enamel thickness as teeth of Mammuthus prim...
Article
Full-text available
The grey wolf (Canis lupus Linnaeus, 1758) is one of the most widespread large carnivores on Earth, and occurs throughout the Arctic. Although wolf diet is well studied, we have scant information from high Arctic areas. Global warming is expected to increase the importance of predation for ecosystem regulation in Arctic environments. To improve our...
Article
Testosterone is a key regulator in vertebrate development, physiology and behaviour. Whereas technology allows extraction of a wealth of genetic information from extant as well as extinct species, complementary information on steroid hormone levels may add a social, sexual and environmental context. Hair shafts have been previously used to sequence...
Data
Fig. S3 Alignment of the ATP6 amino acid sequences of the woolly mammoth (Mammuthus primigenius) ‐ one Holocene Wrangel Island mammoth, Pleistocene clade I, II, and III mammoths, compared to various other mammals (with accession numbers in the sequence name), showing that the non‐synonymous mutation fixed in the Holocene Wrangel population cannot b...
Data
Fig. S1 A median‐joining haplotype network of the analyzed samples mapped against a clade II mammoth (GilbertM25; EU153453).
Data
Fig. S2 Alignment of amino acid sequences of the ATP6 gene showing the nonsynonymous mutation fixed (purple) in all Holocene Wrangel mammoths (first 14 samples).
Data
Table S1 Support for three different tree model priors tested in the BEAST analysis – constant, Skyline, and Skyride – was estimated according to the path sampling and stepping‐stone sampling log marginal likelihoods. Bayes factors and the selected model are indicated.
Data
Table S2 Mutation rate estimates for clade I mammoths calculated in BEAST.
Article
Full-text available
Arctic environments have relatively simple ecosystems. Yet, we still lack knowledge of the spatio-temporal dynamics of many Arctic organisms and how they are affected by local and regional processes. The Arctic hare (Lepus arcticus) is a large lagomorph endemic to high Arctic environments in Canada and Greenland. Current knowledge about this herbiv...
Data
Figure S1 Phylogenetic supertrees constructed from Sciurini gene trees by veto method (A) 882 and SuperTriplets (B) and species trees based on the coalescent with quartet decomposition 883 (C) and a Bayesian analysis (D). Branch labels indicate (B) proportion of sampled trees with 884 this branching pattern, (C) bootstrap support, (D) and Bayesian...
Article
Full-text available
Pečnerová, P. & Martínková, N. (2012). Evolutionary history of tree squirrels (Rodentia, Sciurini) based on multilocus phylogeny reconstruction. —Zoologica Scripta, 41, 211–219. Tree squirrels of the tribe Sciurini represent a group with unresolved phylogenetic relationships in gene trees. We used partial sequences of mitochondrial genes for 12S rR...

Network

Cited By