101 Works

Data from: Sex determination in the wild: a field application of loop-mediated isothermal amplification successfully determines sex across three raptor species

Alejandro Centeno-Cuadros, Ibrahim Abbasi & Ran Nathan
PCR-based methods are the most common technique for sex determination of birds. Although these methods are fast, easy and accurate, they still require special facilities that preclude their application outdoors. Consequently, there is a time lag between sampling and obtaining results that impedes researchers to take decisions in situ and in real time considering individuals’ sex. We present an outdoor technique for sex determination of birds based on the amplification of the duplicated sex-chromosome-specific gene...

Data from: Extensive heterosis in growth of yeast hybrids is explained by a combination of genetic models

Rachel Shapira, Tal Levy, Silvia Shaked, Eyal Fridman & Lior David
Heterosis, also known as hybrid vigor, is the superior performance of a heterozygous hybrid relative to its homozygous parents. Despite the scientific curiosity of this phenotypic phenomenon and its significance for food production in agriculture, its genetic basis is insufficiently understood. Studying heterosis in yeast can potentially yield insights into its genetic basis, can allow one to test the different hypotheses that have been proposed to explain the phenomenon and allows better understanding of how...

Data from: Fine-scale spatial genetic dynamics over the life-cycle of the tropical tree Prunus africana

Dana G. Berens, Carsten Braun, Santiago C. González-Martínez, Eva M. Griebeler, Ran Nathan & Katrin Böhning-Gaese
Studying fine-scale spatial genetic patterns across life stages is a powerful approach to identify ecological processes acting within tree populations. We investigated spatial genetic dynamics across five life stages in the insect-pollinated and vertebrate-dispersed tropical tree Prunus africana in Kakamega Forest, Kenya. Using six highly polymorphic microsatellite loci, we assessed genetic diversity and spatial genetic structure (SGS) from seed rain and seedlings, and different sapling stages to adult trees. We found significant SGS in all...

Data from: Mass seasonal bioflows of high-flying insect migrants

Gao Hu, Ka S. Lim, Nir Horvitz, Suzanne J. Clark, Don R. Reynolds, Nir Sapir & Jason W. Chapman
Migrating animals have an impact on ecosystems directly via influxes of predators, prey, and competitors and indirectly by vectoring nutrients, energy, and pathogens. Although linkages between vertebrate movements and ecosystem processes have been established, the effects of mass insect “bioflows” have not been described. We quantified biomass flux over the southern United Kingdom for high-flying (>150 meters) insects and show that ~3.5 trillion insects (3200 tons of biomass) migrate above the region annually. These flows...

Data from: Macro-detritivores assist resolving the dryland decomposition conundrum by engineering an underworld heaven for decomposers

Nevo Sagi, Moshe Zaguri & Dror Hawlena
Litter decomposition in most terrestrial ecosystems is regulated by moisture-dependent microorganism activity, among other things. Decomposition models typically underestimate rates of plant litter decomposition in drylands, suggesting the existence of additional drivers of decomposition. Attempts to reveal these drivers have predominantly focused on abiotic degradation agents, alternative moisture sources, and soil-litter mixing. The role of burrowing animals in promoting decomposition has received less attention despite greatly contributing to plant litter transfer from the harsh desert...

Mate searching context of prey influences predator-prey space race

Viraj R. Torsekar & Maria Thaker
Predation risk is a strong driver of prey distribution and movement. However, fitness-influencing behaviours, such as mating, can alter risk and influence predator-prey space-use dynamics. In tree crickets, Oecanthus henryi, mate searching involves acoustic signalling by immobile males and phonotactic movement by females. Space-use patterns in tree crickets relative to their primary predators, green lynx spiders (Peucetia viridans), should therefore depend on their current mate-searching state; whether males are calling or non-calling and whether females...

Care-giver identity impacts offspring development and performance in an annually social bumble bee

Claudineia Costa, Kaleigh Fisher, Blanca Guillén, Naoki Yamanaka, Guy Bloch & S Hollis Woodard
Background: The developmental fates of offspring have the potential to be influenced by the identity of their care-givers and by the nature of the care that they receive. In animals that exhibit both parental and alloparental care, such as the annually eusocial insects, the influence of care-giver identity can be directly assessed to yield mechanistic and evolutionary insights into the origins and elaboration of brood care. Here, we performed a comparative investigation of maternal and...

Phylogenomics of scorpions reveal contemporaneous diversification of scorpion mammalian predators and mammal-active sodium channel toxins

Carlos Santibanez, Shlomi Aharon, Jesús Ballesteros, Guilherme Gainett, Caitlin Baker, Edmundo González-Santillán, Mark Harvey, Mohamed Hassans, Ali Abu-Almaaty, Shorouk Aldeyarbi, Lionel Monod, Andrés Ojanguren-Affilastro, Ricardo Pinto Da Rocha, Yoram Zvik, Efrat Gavish-Regev & Prashant Sharma
Scorpions constitute a charismatic lineage of arthropods and comprise more than 2,500 described species. Found throughout various tropical and temperate habitats, these predatory arachnids have a long evolutionary history, with a fossil record that began in the Silurian. While all scorpions are venomous, the asymmetrically diverse family Buthidae harbors nearly half the diversity of extant scorpions, and all but one of the 58 species that are medically significant to humans. However, the lack of a...

Data from: A comprehensive analysis of autocorrelation and bias in home range estimation

Michael J. Noonan, Marlee A. Tucker, Christen H. Fleming, Tom S. Akre, Susan C. Alberts, Abdullahi H. Ali, Jeanne Altmann, Pamela C. Antunes, Jerrold L. Belant, Dean Beyer, Niels Blaum, Katrin Böhning-Gaese, , Rogerio De Paula Cunha, Jasja Dekker, Jonathan Drescher-Lehman, Nina Farwig, Claudia Fichtel, Christina Fischer, Adam T. Ford, Jacob R. Goheen, René Janssen, Florian Jeltsch, Matthew Kauffman, Peter M. Kappeler … & Justin M. Calabrese
Home range estimation is routine practice in ecological research. While advances in animal tracking technology have increased our capacity to collect data to support home range analysis, these same advances have also resulted in increasingly autocorrelated data. Consequently, the question of which home range estimator to use on modern, highly autocorrelated tracking data remains open. This question is particularly relevant given that most estimators assume independently sampled data. Here, we provide a comprehensive evaluation of...

Effect of data source on estimates of regional bird richness in northeastern United States

Roi Ankori-Karlinsky, Ronen Kadmon, Michael Kalyuzhny, Katherine F. Barnes, Andrew M. Wilson, Curtis Flather, Rosalind Renfrew, Joan Walsh & Edna Guk
Standardized data on large-scale and long-term patterns of species richness are critical for understanding the consequences of natural and anthropogenic changes in the environment. The North American Breeding Bird Survey (BBS) is one of the largest and most widely used sources of such data, but so far, little is known about the degree to which BBS data provide accurate estimates of regional richness. Here we test this question by comparing estimates of regional richness based...

Snail mucus increases the CO2 efflux of biological soil crusts

Shelby Rinehart, Netta Shamir Weller & Dror Hawlena
Biological soil crusts (hereafter, biocrusts) are communities of microorganisms that regulate key ecosystem processes such as water distribution, soil erosion, and nutrient cycling in drylands worldwide. The nature of biocrust function can be influenced by multiple environmental factors, including climatic conditions (e.g., precipitation), interactions with plants, and anthropogenic disturbances. Animal regulation of biocrust function has received less research attention, focusing primarily on livestock trampling and to a much lesser extent on biocrust consumption by mesofauna....

Processed microphysical profiles of convective cloud scenes from satellite over ATTO

AVIHAY EFRAIM, Oliver Lauer, Daniel Rosenfeld, Ramon Braga, Marco Franco, Leslie Kremper, Yannian Zhu, Ulrich Pöschl, Christopher Pöhlker, Meinrat Andreae, Paulo Artaxo, Alessandro De Araújo & Mira Pohlker
We present a new approach of analyzing and interpreting vertical profiles of cloud microstructure obtained by satellite remote sensing. The method is based on a spectral bin microphysics adiabatic parcel model and aims to elucidate the effects of aerosols on the evolution of convective clouds and related microphysical processes, including the activation of cloud condensation nuclei (CCN), the growth of cloud droplets, and the formation of precipitation. Characteristic features in the vertical profiles of effective...

Additional file 8 of Computational quantification and characterization of independently evolving cellular subpopulations within tumors is critical to inhibit anti-cancer therapy resistance

Heba Alkhatib, Ariel M. Rubinstein, Swetha Vasudevan, Efrat Flashner-Abramson, Shira Stefansky, Sangita Roy Chowdhury, Solomon Oguche, Tamar Peretz-Yablonsky, Avital Granit, Zvi Granot, Ittai Ben-Porath, Kim Sheva, Jon Feldman, Noa E. Cohen, Amichay Meirovitz & Nataly Kravchenko-Balasha
Additional file 8. Data file of in vivo experiments in BR45 PDX mice 12 days post RT. The data includes single cell protein expression levels as measured by FACS, lambda (λα(cell)) values and G (Giα) values and % of subpopulations out of the entire population.

Additional file 3 of Computational quantification and characterization of independently evolving cellular subpopulations within tumors is critical to inhibit anti-cancer therapy resistance

Heba Alkhatib, Ariel M. Rubinstein, Swetha Vasudevan, Efrat Flashner-Abramson, Shira Stefansky, Sangita Roy Chowdhury, Solomon Oguche, Tamar Peretz-Yablonsky, Avital Granit, Zvi Granot, Ittai Ben-Porath, Kim Sheva, Jon Feldman, Noa E. Cohen, Amichay Meirovitz & Nataly Kravchenko-Balasha
Additional file 3. Data file of in vitro experiments in the 4T1 system. The data includes single cell protein expression levels as measured by FACS, lambda (λα(cell)) values, G (Giα) values and % of subpopulations out of the entire population.

Code to find the cost-effective treatments to stop a propagating front

Adam Lampert
Invasive species propagation is a common phenomenon, and a major question is how humans would stop its propagation in the most cost-effective manner. This package includes software and simulation results to find the optimal shape of the suppression function under certain conditions. This package accompanies the paper "Optimizing the use of suppression zones for containment of invasive species" by Adam Lampert and Andrew Liebhold. In particular, it includes the complete code for generating Figs. 2-4...

Data from: A theoretical foundation for multi-scale regular vegetation patterns

Corina E. Tarnita, Juan A. Bonachela, Efrat Sheffer, Jennifer A. Guyton, Tyler C. Coverdale, Ryan A. Long & Robert M. Pringle
Self-organized regular vegetation patterns are widespread1 and thought to mediate ecosystem functions such as productivity and robustness, but the mechanisms underlying their origin and maintenance remain disputed. Particularly controversial are landscapes of overdispersed (evenly spaced) elements, such as North American Mima mounds, Brazilian murundus, South African heuweltjies, and, famously, Namibian fairy circles. Two competing hypotheses are currently debated. On the one hand, models of scale-dependent feedbacks, whereby plants facilitate neighbours while competing with distant individuals,...

Data from: Genetic evidence for a Janzen-Connell recruitment pattern in reproductive offspring of Pinus halepensis trees.

Ofer Steinitz, David Troupin, Giovanni G Vendramin & Ran Nathan
Effective seed dispersal, combining both dispersal and post-dispersal (establishment) processes, determines population dynamics and colonization ability in plants. According to the Janzen-Connell (JC) model, high mortality near the mother plant shifts the offspring establishment distribution farther away from the mother plant relative to the seed dispersal distribution. Yet, extending this prediction to the distribution of mature (reproductive) offspring remains a challenge for long-living plants. To address this challenge we selected an isolated natural Aleppo pine...

Data from: Fire-induced population reduction and landscape opening increases gene flow via pollen dispersal in Pinus halepensis

David Shohami & Ran Nathan
Population reduction and disturbances may alter dispersal, mating patterns and gene flow. Rather than taking the common approach of comparing different populations or sites, here we studied gene flow via wind-mediated effective pollen dispersal on the same plant individuals before and after a fire-induced population drop, in a natural stand of Pinus halepensis. The fire killed 96% of the pine trees in the stand and cleared the vegetation in the area. Thirteen trees survived in...

Data from: Phenotypic landscapes: phenological patterns in wild and cultivated barley

Sariel Hübner, Eyal Bdolach, Shachaf Ein-Gedy, Karl J. Schmid, Abraham Korol & Eyal Fridman
Phenotypic variation in natural populations is the outcome of the joint effects of environmentally induced adaptations and neutral processes on the genetic architecture of quantitative traits. In this study we examined the role of adaptation in shaping wild barley phenotypic variation along different environmental gradients. Detailed phenotyping of 164 wild barley (Hordeum spontaneum) accessions from Israel (of the Barley1K collection), and 18 cultivated barley (H. vulgare) varieties, was conducted in common garden field trials. Cluster...

Data from: Asymmetric adaptation to indolic- and aliphatic-glucosinolates in the B and Q sibling species of Bemisia tabaci (Hemiptera: Aleyrodidae)

Moshe Elbaz, Eyal Halun, Osnat Malka, Sergey Malitsky, Eyal Blum, Asaph Aharoni & Shai Morin
The role glucosinolates play in defending plants against delicate phloem feeders such as aphids and whiteflies is currently not clear as these herbivores may avoid bringing glucosinolates from the phloem sap into contact with myrosinase enzymes. Here, we investigated the effects of high levels of aliphatic- and indolic-glucosinolates on life history traits and detoxification gene expression in two sibling species, B and Q, of the whitefly Bemisia tabaci. High levels of aliphatic-glucosinolates decreased the average...

Data from: Sensitivity analysis of conservation targets in systematic conservation planning

Noam Levin, Tessa Mazor, Eran Brokovich, Pierre-Elie Jablon & Salit Kark
Systematic conservation planning has rapidly advanced in the past decade and has been increasingly incorporated in multiple studies and conservation projects. One of its requirements is a quantitative definition of conservation targets. While the Convention on Biological Diversity aims to expand the world's protected area network to 17% of the land surface, in many cases such uniform policy-driven targets may not be appropriate for achieving persistence of various species. Targets are often set arbitrarily, often...

Data from: Colonization of the Mediterranean Basin by the vector biting midge species Culicoides imicola: an old story

Stephanie Jacquet, Claire Garros, Eric Lombaert, Catherine Walton, Johana Restrepo, Xavier Allene, Thierry Baldet, Catherine Cetre-Sossah, Alexandra Chaskopoulou, Jean-Claude Delecolle, Amelie Desvars, Mouloud Djerbal, Moussa Fall, Laetitia Gardes, Michel De Garine-Wichatitsky, Maria Goffredo, Yuval Gottlieb, Assane Gueye Fall, Muo Kasina, Karien Labuschagne, Youssef Lhor, Javier Lucientes, Thibaud Martin, Bruno Mathieu, Miguel Miranda … & J.-C. Delecolle
Understanding the demographic history and genetic make-up of colonizing species is critical for inferring population sources and colonization routes. This is of main interest for designing accurate control measures in areas newly colonized by vector species of economically important pathogens. The biting midge Culicoides imicola is a major vector of orbiviruses to livestock. Historically, the distribution of this species was limited to the Afrotropical region. Entomological surveys first revealed the presence of C. imicola in...

Data from: The complexity of social complexity: a quantitative multidimensional approach for studies on social organisation

Jacob Holland & Guy Bloch
The rapid increase in “big data” of the post-genomic era makes it crucial to appropriately measure the level of social complexity in comparative studies. We argue that commonly-used qualitative classifications lump together species showing a broad range of social complexity, and falsely imply that social evolution always progresses along a single linear stepwise trajectory that can be deduced from comparing extant species. To illustrate this point, we compared widely-used social complexity measures in "primitively eusocial"...

Lorentzian filter correction of turbulence measurements on oscillating floating platforms: impact on wind spectra and eddy covariance fluxes

Roee Ezraty
Turbulence and eddy covariance measurements on a floating platform over water surfaces can be contaminated by platform oscillations, which may affect the calculated air–water exchange. The conventional method for decontamination of the platform oscillations from the wind velocity measurements requires the installation of an additional sensitive, and often costly, motion sensor. This paper examines a new mathematical decontamination method, termed Lorentzian filter, which avoids the need for such an instrument. The method, based on the...

Data from: How to use (and not to use) movement-based indices for quantifying foraging behavior

Topaz Halperin, Michael Kalyuzhny & Dror Hawlena
1. Movement based indices such as Moves Per Minute (MPM) and Proportion Time Moving (PTM) are common methodologies to quantify foraging behavior. We explore fundamental drawbacks of these indices, question the ways scientists have been using them, and propose new solutions. 2. To do so, we combined analytical and simulation models with lizards foraging data at the individual and species levels. 3. We found that the maximal value of MPM is constrained by the minimal...

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  • Hebrew University of Jerusalem
  • Ben-Gurion University of the Negev
  • Azrieli College of Engineering Jerusalem
  • Tel Aviv University
  • University of Haifa
  • Agricultural Research Organization
  • Max Planck Institute for Ornithology
  • University of Hohenheim
  • Princeton University
  • The Ohio State University