73 Works

Asymmetric regulation of caterpillar development by changes in photoperiod

Olle Lindestad, Karl Gotthard & Inger Aalberg Haugen
Many insects possess the plastic ability to either develop directly to adulthood, or enter diapause and postpone reproduction until the next year, depending on environmental cues (primarily photoperiod) that signal the amount of time remaining until the end of the growth season. These two alternative pathways often differ in co-adapted life history traits, e.g. with slower development and larger size in individuals headed for diapause. The developmental timing of these differences may be of adaptive...

Data from: A molecular phylogeny of forktail damselflies (genus Ischnura) reveals a dynamic macroevolutionary history of female colour polymorphisms

Rachel Blow, Beatriz Willink & Erik Svensson
Colour polymorphisms are popular study systems among biologists interested in evolutionary dynamics, genomics, sexual selection and sexual conflict. In many damselflies, such as in the globally distributed genus Ischnura (forktails), female colour polymorphisms occur in some species. Female-polymorphic species contain two or three female morphs, one of which is male-coloured (androchrome or male mimic) and co-exists with sexually dimorphic (heterochrome) females. These female colour polymorphisms are considered to be maintained by frequency-dependent sexual conflict, but...

Out in the open: behavior’s effect on predation-risk and thermoregulation by aposematic caterpillars

Matthew Nielsen & Johanna Mappes
Warning coloration should be under strong stabilizing selection but often displays considerable intraspecific variation. Opposing selection on color by predators and temperature is one potential explanation for this seeming paradox. Despite the importance of behavior for both predator avoidance and thermoregulation, its role in mediating selection by predators and temperature on warning coloration has received little attention. Wood tiger moth caterpillars, Arctia plantaginis, have aposematic coloration, an orange patch on the black body. The size...

Low persistence of genetic rescue across generations in the Arctic fox (Vulpes lagopus)

Karin Norén, Anna Lotsander, Malin Hasselgren, Malin Larm, Johan Wallén & Anders Angerbjörn
Genetic rescue can facilitate the recovery of small and isolated populations suffering from inbreeding depression. Long-term effects are however complex and examples spanning over multiple generations under natural conditions are scarce. The aim of this study was to test for long-term effects of natural genetic rescue in a small population of Scandinavian Arctic foxes (Vulpes lagopus). By combining a genetically verified pedigree covering almost 20 years with a long-term dataset on individual fitness (n=837 individuals),...

Climate effects on the breeding ecology of pied flycatchers at the north of their range

Marta Lomas Vega, Thord Fransson & Cecilia Kullberg
The file “Raw data.csv” contains all data used for the analyses of the article “The effects of four decades of climate change on the breeding ecology of an avian sentinel species across a 1500-km latitudinal gradient are stronger at high latitudes” (DOI: 10.1002/ece3.7459). This data was used to investigate the effect of climate warming on the breeding time and breeding success of European pied flycatchers breeding in Sweden during 1982-2017. The data set contains 29035...

Raw data: Direct and insect-mediated effects of pathogens on plant growth and fitness

Laura Van Dijk, Johan Ehrlen & Ayco Tack
1. Plants are attacked by a large diversity of pathogens. These pathogens can affect plant growth and fitness directly, but also indirectly by inducing changes in the host plant that affect interactions with beneficial and antagonistic insects. Yet, we lack insights into the relative importance of direct and indirect effects of pathogens on their host plants, and how these effects differ among pathogen species. 2. In this study, we examined four fungal pathogens on the...

Variation in developmental rates is not linked to environmental unpredictability in annual killifishes

Piotr Rowinski, Will Sowersby, Joacim Näslund, Simon Eckerström-Liedholm, Karl Gotthard & Björn Rogell
Comparative evidence suggests that adaptive plasticity may evolve as a response to predictable environmental variation. However, less attention has been placed on unpredictable environmental variation, which is considered to affect evolutionary trajectories by increasing phenotypic variation (or bet-hedging). Here, we examine the occurrence of bet-hedging in egg developmental rates in seven species of annual killifish that originate from a gradient of variation in precipitation rates, under three treatment incubation temperatures (21°C, 23°C, and 25°C). In...

Data and script for: Weapons evolve faster than sperm in bovids and cervids

John Fitzpatrick
In polyandrous species, males face reproductive competition both before and after mating. Sexual selection thus shapes the evolution of both pre- and postcopulatory traits, creating competing demands on resource allocation to different reproductive episodes. Traits subject to strong selection exhibit accelerated rates of phenotypic divergence, and examining evolutionary rates may inform us about the relative importance and potential fitness consequences of investing in traits under either pre- or postcopulatory sexual selection. Here, we used a...

Changes in forest structure drive temperature preferences of boreal understory plant communities

Ditte Marie Christiansen, Lars Lønsmann Iversen, Johan Ehrlén & Kristoffer Hylander
1. The local climate in forest understories can deviate substantially from ambient conditions. Moreover, forest microclimates are often characterized by cyclic changes driven by management activities such as clear-cutting and subsequent planting. To understand how and why understory plant communities change, both ambient climate change and temporal variation in forest structure has to be considered. 2. We used inventories from 11436 productive forest sites in Sweden repeated every 10th year 1993 - 2017 to examine...

Measuring ecosystem services: Guidance on developing ecosystem service indicators

Claire Brown, Belinda Reyers, Lisa Ingwall-King, Abisha Mapendembe, Jeanne Nel, Patrick O'Farrell, Nadine Bowles-Newark & Mark Dixon

Writing science with LaTeX

Peter Jansson
An introduction to authoring with LaTeX for the sciences. The text assumes no prior knowledge of LaTeX. It is intended for students and professionals who wants a brief introduction as a basis for further self-learning. It should be sufficient for writing any document that is based on a template or specific class.
v.5: The section on referencing has been partially rewritten and reorganised. Minor corrections throughout the text.

v.4: Revisions made to follow developments in Overleaf....

Discovery of novel serum metabolic biomarkers in patients with polycystic ovarian syndrome and premature ovarian failure

Jiying Chen, Qinger Zhou, Yonggang Zhang, Wenqing Tan, Hanchao Gao, Liying Zhou, Shuixiu Xiao, Jinhua Gao, Jing Li & Zhiying Zhu
Several widely recognized metabolites play a role in regulating the pathophysiological processes of various disorders. Nonetheless, the lack of effective biomarkers for the early diagnosis of polycystic ovarian syndrome (PCOS) and premature ovarian failure (POF) has led to the discovery of serum-based metabolic biomarkers for these disorders. We aimed to identify various differentially expressed metabolites (DEMs) through serum-based metabolic profiling in patients with PCOS and POF and in healthy individuals by using liquid chromatography–mass spectrometry...

Identification of downstream targets and signaling pathways of long non-coding RNA NR_002794 in human trophoblast cells

Yinyao Ma, Hua Wu, Xuxia Liang, Chun Zhang, Yanhua Ma, Yanfen Wei, Jing Li & Hui Chen
Preeclampsia (PE) is a huge threat to pregnant women. Our previous study demonstrated that long non-coding RNA (lncRNA) NR_002794 was highly expressed in placentas of PE patients and could regulate the phenotypes of trophoblast cells. However, the downstream regulatory mechanisms of NR_002794 remain unknown. In this text, some potential downstream targets or signaling pathways of NR_002794 were identified through RNA sequencing (RNA-seq) and bioinformatics analysis in SWAN71 trophoblast cells. Western blot assay demonstrated that NR_002794...

Phenoxychromone and 4-hydroxyisoflavans from the roots of Glycyrrhiza uralensis

Zulfiqar Ali, Mohammed Hawwal, Bharathi Avula, Amar G. Chittiboyina, Jing Li, Charles Wu & Ikhlas A. Khan
In an attempt to find species specific markers, a phenoxychromone (1) and eight isoflavonoids including six isoflavans (2-7) and two isoflavanones (8 and 9) were isolated from the root of Glycyrrhiza uralensis. Among the isolated phenolic compounds, glycyurelone (1), glycyurelvanins A and B (2 and 3) were found to be undescribed while others, (−)-vestitol (4), conferol A (5), glyasperin C (6), glyasperin D (7), (−)-licoisoflavanone (8), and (−)-3'-(γ,γ-dimethylallyl)kievitone (9) were previously reported. All compounds except...

Four new resorcinol derivatives with neuroprotective activities from Xylaria nigripes

Lan-Qing Li, Jing Li, Hong-Ping Long, Ji-Kai Liu & Xian Wang
Four new resorcinol derivatives, namely (−)/(+)-xylarinig A (1), as well as xylarinigs B (2) and C (3), were isolated from the ethyl acetate extracts of the solid fermentation of Xylaria nigripes. Their structures were established by comprehensive spectroscopic analysis combined with electronic circular dichroism (ECD) calculations. Compound 1 is an optical mixture, and was resoluted into optical pure enatiomers (+)-1 and (−)-1 by chiral HPLC. The neuroprotective effects of 1–3 against the damage of PC12...

Multiscalar typology of residential areas in Sweden

Juta Kawalerowicz & Bo Malmberg
This research was carried out as part of RJ-funded project “The Neighbourhood Revisited: Spatial polarization and social cohesion in contemporary Sweden” directed by Bo Malmberg at the Department of Human Geography at Stockholm University. This repository contains a report which describes how multiscalar topology was constructed and a dataset with coordinates of residential areas and their cluster assignment. For mapping coordinates in the dataset in GIS software (QGIS/ArcGIS) please use RT 90 2,5 gon V.

Multiscalar typology of residential areas in Sweden

Juta Kawalerowicz & Bo Malmberg
This research was carried out as part of RJ-funded project “The Neighbourhood Revisited: Spatial polarization and social cohesion in contemporary Sweden” directed by Bo Malmberg at the Department of Human Geography at Stockholm University. This repository contains a report which describes how multiscalar topology was constructed and a dataset with coordinates of residential areas and their cluster assignment. For mapping coordinates in the dataset in GIS software (QGIS/ArcGIS) please use RT 90 2,5 gon V.

Temporal dynamics and biocontrol potential of a hyperparasite on coffee leaf rust across a landscape in Arabica coffee’s native range

Beyene Zewdie, Ayco Tack, Biruk Ayalew, Girma Adugna, Sileshi Nemomissa & Kristoffer Hylander
Agroforestry systems can provide habitats for rich biodiversity including multitrophic interactions, which presents opportunities to develop natural pest control. Shade coffee systems in several coffee-growing areas of the world host such unique habitats where pests and their natural enemies interact. One of the major global challenges for coffee production, coffee leaf rust caused by the fungal pathogen Hemileia vastatrix is attacked by the fungal hyperparasite, Lecanicillium lecanii. However, we lack insights in the dynamics and...

Predatory arthropod community composition in apple orchards: Orchard management, landscape structure and sampling method

Peter Hambäck, Mario Porcel, Marco Tasin & Ulrika Samnegård
Studies on predatory arthropods in agricultural areas seldom include Diptera other than hover flies, partly because common sampling methods are less effective for capturing species that easily fly off when disturbed. To study the effect from this bias when describing the predator community, we compared traditional beat sampling of branches and suction sampling for describing the community of predatory arthropods in Swedish apple orchards, both organic orchards and orchards using integrated pest management. Our results...

Cultural communication as political communication

Nete Nørgaard Kristensen & Anna Roosvall

Data from: Intra- and interspecific density dependence mediates weather effects on the population dynamics of a plant-insect herbivore system

Peter Hambäck
Temperature and precipitation are two major factors determining arthropod population densities, but the effects from these climate variables are seldom evaluated in the same study system and in combination with inter- and intraspecific density dependence. In this study, I used a 19 year time series on plant variables (shoot height and flowering incidence) and insect density in order to understand direct and indirect effects of climatic fluctuations on insect population densities. The study system includes...

Dataset: Multi-scale mosaics in top-down pest control by ants from natural coffee forests to plantations

Kristoffer Hylander, Moritz Stüber, Beyene Zewdie & Ayco Tack
While top-down control plays an important role in shaping both natural and agricultural food webs, we lack insights into how top-down control effects vary across spatial scales. We used a multi-scale survey of top-down control of coffee pests and diseases by arboreal ants to examine if colony location creates a small-scale mosaic in top-down control around trees and if the strength of that control varies between sites at the landscape scale. We investigated pest and...

Integrative taxonomic analysis to reveal the species status of Bombus flavidus, combining COI and nuclear sequencing, wing morphometrics and secretions used for mate attraction as well as patterns of color polymorphism

Patrick Lhomme, Sarah D. Williams, Guillaume Ghisbain, Baptiste Martinet, Maxence Gérard & Heather H. Hines
Bumble bees, due to their morphological monotony and color diversity, have presented difficulties with species delimitation. Recent bumble bee declines have made it ever more imperative to resolve the status of species to address conservation concerns. Some of the taxa found to be most threatened are the often-rare socially parasitic bumble bees, which have additional trophic requirements. Among the socially parasitic bumble bees, Bombus flavidus Eversmann has contentious species status. While multiple separate species allied...

Immigration credit of temperate forest herbs in fragmented landscapes – implications for restoration of habitat connectivity

Jörg Brunet, Per-Ola Hedwall, Jessica Lindgren & Sara Cousins
1. In many agricultural landscapes, it is important to restore networks of forests to provide habitat and stepping stones for forest specialist taxa. More knowledge is, however, needed on how to facilitate the immigration of such taxa in restored forest patches. Here, we present the first chronosequence study to quantify the dynamics of immigration credits of forest specialist plants in post-arable forest patches. 2. We studied the distribution of herbaceous forest specialist plant species in...

Mouthings in Swedish Sign Language: An exploratory study

Johanna Mesch, Krister Schönström & Sebastian Embacher
This paper deals with the non-manual mouth actions of Swedish Sign Language, Svenskt teckenspråk (STS). Based on data from the Swedish Sign Language Corpus and the Swedish Sign Language as L2 Corpus, we compare the use of mouthings in deaf L1 as well as hearing L2 signers. The use, distribution and frequency of mouthings are explored and described quantitatively and qualitatively. The results reveal some similarities as well as differences in the use of mouthings...

Registration Year

  • 2021

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  • Stockholm University
  • Zhejiang University
  • Capital Medical University
  • Sun Yat-sen University
  • West China Hospital of Sichuan University
  • North West Agriculture and Forestry University
  • Wenzhou Medical University
  • Sichuan University
  • Fudan University
  • State Administration of Traditional Chinese Medicine of the People's Republic of China