18 Works

Data from: Lack of habitat segregation and no interspecific territoriality in three syntopic cryptic species of the golden-spectacled warblers Phylloscopus (Seicercus) burkii complex

Alexey Opaev & Yulia Kolesnikova
It is widely accepted that exploitative competition prevents the coexistence of any two or more closely-related species unless differences exists in their ecological niches and resource use. In sibling bird species, exploitative competition is reduced mainly by spatial segregation of competing species. Spatial segregation can be achieved in two basic ways: by using different habitats or microhabitats that each species is predominately exploiting, or by interspecific territoriality. To our knowledge, either habitat segregation or interspecific...

Isotope analyses of amino acids in fungi and fungal feeding Diptera larvae allow differentiating ectomycorrhizal and saprotrophic fungi-based food chains

Melanie Mira Pollierer, Stefan Scheu & Alexei V. Tiunov
1- Both ectomycorrhizal (ECM) and saprotrophic fungi are fundamental to carbon and nutrient dynamics in forest ecosystems; however, the relative importance of these different fungal functional groups for higher trophic levels of the soil food web is virtually unknown. 2- To explore differences between fungal functional groups and their importance for higher trophic levels, we analysed isotopic composition of nitrogen and carbon in amino acids (AAs) and bulk tissue of leaf litter, fungi, and fungal-feeding...

Data from: Colonizing the wild west: low diversity of complete mitochondrial genomes in western North Pacific killer whales suggests a founder effect

Olga A. Filatova, Ekaterina A. Borisova, Ilya G. Meshchersky, Maria D. Logacheva, Nataliia V. Kuzkina, Olga V. Shpak, Phillip A. Morin, Erich Hoyt & Ilya G Meschersky
In the North Pacific, fish-eating R-type “resident” and mammal-eating T-type “transient” killer whales do not interbreed and differ in ecology and behavior. Full-length mitochondrial genomes (about 16.4 kbp) were sequenced and assembled for 12 R-type and 14 T-type killer whale samples from different areas of the western North Pacific. All R-type individuals had the same haplotype, previously described for R-type killer whales from both eastern and western North Pacific. However, haplotype diversity of R-type killer...

Multidimensional trophic niche revealed by complementary approaches: gut content, digestive enzymes, fatty acids and stable isotopes in Collembola

Anton Potapov, Melanie Pollierer, Sandrine Salmon, Vladimír Šustr & Ting-Wen Chen
Trophic niche differentiation may explain coexistence and shape functional roles of species. In complex natural food webs, however, trophic niche parameters depicted by single and isolated methods may simplify the multidimensional nature of consumer trophic niches, which includes feeding processes such as food choice, ingestion, digestion, assimilation and retention. Here we explore the correlation and complementarity of trophic niche parameters tackled by four complementary methodological approaches, i.e., visual gut content-, digestive enzyme-, fatty acid- and...

Natural toxic impact and thyroid signaling interplay orchestrates riverine adaptive divergence of salmonid fish

Evgeny Esin, Grigorrii Markevich, Nikolay Melnik, Daria Kapitanova & Fedor Shkil
Abstract 1. Adaptive radiation in fishes has been actively investigated over the last decades. Along with numerous well-studied cases of lacustrine radiation, some examples of riverine sympatric divergence have been recently discovered. In contrast to the lakes, the riverine conditions do not provide evident stability in the ecological gradients. Consequently, external factors triggering the radiation, as well as developmental mechanisms underpinning it, remain unclear. 2. Herein, we present the comprehensive study of external and internal...

Data from: Trophic consistency of supraspecific taxa in belowground invertebrate communities: comparison across lineages and taxonomic ranks

Anton M. Potapov, Stefan Scheu & Alexei V. Tiunov
1. Animals that have similar morphological traits are expected to share similar ecological niches. This statement applies to individual animals within a species and thus species often serve as the functional units in ecological studies. Species are further grouped into higher-ranked taxonomic units based on their morphological similarity and thus are also expected to be ecologically similar. On the other hand, theory predicts that strong competition between closely related species may result in differentiation of...

Data from: Climate-associated tundra thaw pond formation and range expansion of boreal zooplankton predators

Derek J. Taylor, Matthew J. Ballinger, Andrew S. Medeiros & Alexey A. Kotov
Most of the freshwater component of the Earth's surface is composed of shallow tundra ponds. These high latitude ecosystems have been exposed to a variety of abiotic disturbances associated with recent environmental change. However, the biological significance of these changes remains poorly understood. Here, we characterize the abiotic disturbance to the shallow tundra ponds of northwest Alaska. We used historical aerial imagery to determine that up to 53% of the sampled ponds have formed during...

Complex reticulate evolution of the speckled brush-furred rats (Lophuromys) in the Ethiopian centre of endemism

Valeria Komarova, Danila Kostin, Josef Bryja, Ondřej Mikula, Anna Bryjová, Dagmar Čížková, Radim Šumbera, Yonas Meheretu & Leonid Lavrenchenko
The Ethiopian highlands represent a remarkable biodiversity “hotspot” with a very high number of endemic species, even among vertebrates. Ethiopian representatives of a species complex of speckled brush-furred rats (Lophuromys flavopunctatus sensu lato) inhabit highland habitats ranging from low-elevation forests to Afroalpine grasslands. These may serve as a suitable model for understanding evolutionary processes leading to high genetic and ecological diversity in montane biodiversity hot-spots. Here, we analyze the most comprehensive genetic dataset of this...

Innate anti-predator behavior can promote infection in fish even in the absence of predators

Victor Mikheev, Anna Pasternak, Andrey Morozov & Jouni Taskinen
Natural enemies - predators and parasites - largely shape the dynamics of ecosystems. It is known that anti-predator and anti-parasite defense can be mutually conflicting, however consequences of this trade-off for the regulation of infection burden in animals are still poorly understood. We hypothesize that even in the absence of cues from predators, innate anti-predator behavior (“ghost of predation past”) interferes with defense against parasites and can enhance the infection risk. As a case study,...

Data from: Unexpected population genetic structure of European roe deer in Poland: an invasion of the mtDNA genome from Siberian roe deer

Maciej Matosiuk, Anetta Borkowska, Magdalena Świsłocka, Paweł Mirski, Zbigniew Borowski, Kamil Krysiuk, Aleksey A. Danilkin, Elena Y. Zvychaynaya, Alexander P. Saveljev & Mirosław Ratkiewicz
Introgressive hybridization is a widespread evolutionary phenomenon which may lead to increased allelic variation at selective-neutral loci and to transfer of fitness-related traits to introgressed lineages. We inferred the population genetic structure of the European roe deer (Capreolus capreolus) in Poland from mitochondrial (CR and cyt b) and sex-linked markers (ZFX, SRY, DBY4 and DBY8). Analyses of CR mtDNA sequences from 452 individuals indicated widespread introgression of Siberian roe deer (C. pygargus) mtDNA in the...

Data from: Molecular phylogeny of the cyprinid tribe Labeonini (Teleostei: Cypriniformes)

Lei Yang, M. Arunachalam, Tetsuya Sado, Boris A. Levin, Alexander S. Golubtsov, Jörg Freyhof, John P. Friel, Wei-Jen Chen, M. Vincent Hirt, Raja Manickam, Mary K. Agnew, Andrew M. Simons, Kenji Saitoh, Masaki Miya, Richard L. Mayden & Shunping He
The cyprinid tribe Labeonini (sensu Rainboth, 1991) is a large group of freshwater fishes containing around 40 genera and 400 species. They are characterized by an amazing diversity of modifications to their lips and associated structures. In this study, a total of 34 genera and 142 species of putative members of this tribe, which represent most of the generic diversity and more than one third of the species diversity of the group, were sampled and...

Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene?

Olesya Smyshlyaeva, Elena Severova, Olga Krylovich, Evgeniya Kuzmicheva, Arkady Savinetsky, Dixie West & Virginia Hatfield
In the Aleutian Islands during the Holocene, terrestrial predators were actually absent; as a result, large seabird colonies thrived along the coasts or across entire islands. Bird guano enriches the soil with nitrogen, which can lead to the formation of highly modified ornithogenic (bird-formed) ecosystems. For a more detailed investigation of avian influence, we reconstructed more than 10,000-year-old vegetation dynamics of the coast of Shemya Island (Near Islands) by pollen analysis. At the initial stages...

Reproductive success and mortality of male and female Daphnia at different sex ratios

Yan Galimov & Andrey Tchabovsky
This dataset contains data from Daphnia sexual reproduction experiments described in the paper: “Galimov YR, Haag CR, Tukhbatullin AR, Tchabovsky AV 2021. Sex ratio effects on reproductive success of male and female Daphnia. Journal of Evolutionary Ecology ”. We compared reproductive success of male and female Daphnia in experimental populations with sex ratios varying from one male per 81 females to one male per one female. In males, reproductive success strongly and monotonically decreased with...

Data from: In search of an optimal DNA diagnosis for taxonomic descriptions with MOLD, a novel tool to identify diagnostic nucleotide characters

Alexander Fedosov
While DNA characters are increasingly used for phylogenetic inference, taxa delimitation and identification, their use for formal description of taxa remains scarce and inconsistent. The major impediments until recently was a lack of a suitable algorithm to identify signature DNA characters. The 2019-2020 however were marked by an almost simultaneous release of three softwares, simple to run and designed specifically for taxonomists. There is, nevertheless, a major concern, whether taxonomy will benefit from wide application...

Data from: Delimiting species of marine gastropods (Turridae, Conoidea) using RAD-sequencing in an integrative taxonomy framework

Jawad Abdelkrim, Laetitia Aznar-Cormano, Barbara Buge, Alexander Fedosov, Yuri Kantor, Paul Zaharias & Nicolas Puillandre
Species delimitation in poorly-known and diverse taxa is usually performed based on monolocus, DNA barcoding-like approaches, while multilocus data are often used to test alternative species hypotheses in well-studied groups. We combined both approaches to delimit species in the Xenuroturris / Iotyrris complex, a group of venomous marine gastropods from the Indo-Pacific. First, COI sequences were analyzed using three methods of species delimitation, ABGD, PTP and GMYC to propose primary species hypotheses (PSH). Second, RAD-seq...

Evidence for divergence between sympatric stone charr and Dolly Varden along unique environmental gradients in Kamchatka.

Nikolai Melnik, Grigorii Markevich, Eric Taylor, Evgeny Esin & Aleksey Loktyushkin
Here we describe the biological and ecological differences between partially anadromous Dolly Varden and riverine stone charr distributed in the Kamchatka River middle course. Endemic stone charr, being the ambush predator, is defined by the accelerated growth and prolonged lifespan, robust body and large mouth, as well as specific marble colouration since an early age. The significant restriction in gene flow between the stone charr and benthos-eating Dolly Varden was supported by an allelic distribution...

Phylogenomics of monitor lizards and the role of competition in dictating body size disparity

Ian Brennan, Alan R. Lemmon, Emily Moriarty Lemmon, Daniel M. Portik, Valter Weijola, Luke Welton, Stephen C. Donnellan & J. Scott Keogh
Organismal interactions drive the accumulation of diversity by influencing species ranges, morphology, and behavior. Interactions vary from agonistic to cooperative and should result in predictable patterns in trait and range evolution. However, despite a conceptual understanding of these processes, they have been difficult to model, particularly on macroevolutionary timescales and across broad geographic spaces. Here we investigate the influence of biotic interactions on trait evolution and community assembly in monitor lizards (Varanus). Monitors are an...

Harrison’s rule scales up to entire parasite assemblages but is determined by environmental factors

Renan Maestri, Maico Fiedler, Georgy Shenbrot, Elena Surkova, Sergei Medvedev, Irina Khokhlova & Boris Krasnov
Harrison’s rule states that parasite body size and the body size of their hosts tend to be positively correlated. After it was proposed a century ago, a number of studies have investigated this trend, but the support level has varied greatly between parasite/host associations. Moreover, while the rule has been tested at the individual species level, we still lack knowledge on whether Harrison’s rule holds at the scale of parasite and host communities. Here, we...

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