30 Works

Data from: Direct and indirect effect of cannibalism and intraguild predation in the two sibling Harmonia ladybird beetles

Naoya Osawa & Arash Rasekh
In this study, we focused on the direct (i.e. predation) and indirect (i.e. potential threat from coexisting with a larger individual) effects of cannibalism and intraguild predation (IGP) during larval stages of two sibling ladybird beetles. These effects play an important role in the coexistence of the generalist–common Harmonia axyridis and specialist–rare H. yedoensis (Coleoptera: Coccinellidae). Direct predation effect of cannibalism and IGP were asymmetric in the two sibling ladybird beetles; the fourth instar larvae...

Genetic structures across a biogeographical barrier reflect dispersal potential of four Southeast Asian mangrove plant species

Alison Wee, Annika Noreen, Junya Ono, Koji Takayama, Prakash Kumar, Hugh Tan, Mohd Saleh, Tadashi Kajita, Edward Webb, Alison K. S. Wee, Annika M. E. Noreen, Prakash P. Kumar, Hugh T. W. Tan, Mohd N. Saleh & Edward L. Webb
Aim Biogeographic barriers restrict the movement of individuals, resulting in population divergence, genetic differentiation, endemism and speciation. Yet, some barriers demonstrate unequal effect across species depending on species dispersal, which manifests in varying genetic structure. We test the hypotheses that the genetic structure of four coastal mangrove species would reflect differences in dispersal potential across the Malay Peninsula, a major biogeographic barrier in the Indo-West Pacific region. Location Twelve sites from the east and west...

Data from: Dinoflagellates with relic endosymbiont nuclei as models for elucidating organellogenesis

Yuji Inagaki, Chihiro Sarai, Goro Tanifuji, Takuro Nakayama, Ryoma Kamikawa, Tazuya Takahashi, Hideaki Miyashita, Ken-Ichiro Ishida, Mitsunori Iwataki, Euki Yazaki & Eriko Matsuo
Nucleomorphs are relic endosymbiont nuclei so far found only in two algal groups, cryptophytes and chlorarachniophytes, which have been studied to model the evolutionary process of integrating an endosymbiont alga into a host-governed plastid (organellogenesis). However, past studies suggested that DNA transfer from the endosymbiont to host nuclei had already ceased in both cryptophytes and chlorarachniophytes, implying that the organellogenesis at the genetic level has been completed in the two systems. Moreover, we have yet...

Data from: Secondary contact and genomic admixture between rhesus and long-tailed macaques in the Indochina Peninsula

Tsuyoshi Ito, Sreetharan Kanthaswamy, Srichan Bunlungsup, Robert Oldt, Paul Houghton, Yuzuru Hamada & Suchinda Malaivijitnond
Understanding the process and consequences of hybridization is one of the major challenges in evolutionary biology. A growing body of literature has reported evidence of ancient hybridization events or natural hybrid zones in primates, including humans; however, we still have relatively limited knowledge about the pattern and history of admixture because there have been little studies that simultaneously achieved genome-scale analysis and a geographically extensive sampling of wild populations. Our study applied double-digest restriction site-associated...

Breastfeeding dynamically changes endogenous oxytocin levels and emotion recognition in mothers

Michiko Matsunaga, Takefumi Kikusui, Kazutaka Mogi, Miho Nagasawa, Rumi Ooyama & Masako Myowa
Breastfeeding behaviors can significantly change mothers’ physiological and psychological states. The hormone oxytocin may mediate breastfeeding and mothers’ emotion recognition. This study examined the effects of endogenous oxytocin fluctuation via breastfeeding on emotion recognition in 51 primiparous mothers. Saliva oxytocin was assessed before and after the manipulation (breastfeeding or holding an infant), and emotion recognition tasks were conducted. Among mothers who breastfed daily, mothers with more increased levels of oxytocin after breastfeeding showed greater reduced...

Adiponectin stimulates exosome release to enhance mesenchymal stem cell driven therapy of heart failure in mice

Yuto Nakamura, Shunbun Kita, Yoshimitsu Tanaka, Shiro Fukuda, Yoshinari Obata, Tomonori Okita, Hiroyuki Nishida, Yuki Takahashi, Yuusuke Kawachi, Yuri Tsugawa-Shimizu, Yuya Fujishima, Hitoshi Nishizawa, Yoshinobu Takakura, Shigeru Miyagawa, Yoshiki Sawa, Norikazu Maeda & Iichiro Shimomura
Mesenchymal stem/stromal cells (MSCs) are cultured adult stem cells originally reside in virtually all tissues and the gain of MSCs by transplantation has become the leading form of cell therapy in various diseases. However, there is limited knowledge on the alteration of its efficacy by factors in recipients. Here we report that the cardioprotective properties of intravenously injected MSCs in a mouse model of pressure-overload heart failure largely depend on circulating adiponectin, an adipocyte secreted...

Data from: Characterization of rhizome transcriptome and identification of a rhizomatous ER body in the clonal plant Cardamine leucantha

Kiwako S. Araki, Atsushi J. Nagano, Ryohei Thomas Nakano, Tatsuya Kitazume, Katsushi Yamaguchi, Ikuko Hara-Nishimura, Shuji Shigenobu & Hiroshi Kudoh
The rhizome is a plant organ that develops from a shoot apical meristem but penetrates into belowground environments. To characterize the gene expression profile of rhizomes, we compared the rhizome transcriptome with those of the leaves, shoots and roots of a rhizomatous Brassicaceae plant, Cardamine leucantha. Overall, rhizome transcriptomes were characterized by the absence of genes that show rhizome-specific expression and expression profiles intermediate between those of shoots and roots. Our results suggest that both...

Data from: An intermediate type of medusa from the early Cambrian Kuanchuanpu Formation, South China

Xing Wang, Jean Vannier, Xiaoguang Yang, Shin Kubota, Qiang Ou, Xiaoyong Yao, Kentaro Uesugi, Osamu Sasaki, Tsuyoshi Komiya & Jian Han
The tetraradial or pentaradial fossil embryos and related hatched individuals from the early Cambrian Kuanchuanpu Formation are of great interest for understanding the early evolution of medusozoans. The phylogenetic and evolutionary significance of their external and internal characters (e.g. manubrium, tentacles, septa and claustra) is still controversial. Here we describe a new pentamerous medusozoan, Hanagyroia orientalis gen. et sp. nov., characterized by five well-developed perradial oral lips around a remarkably large manubrium, a conspicuous equatorial...

Environmentally triggered variability in the genetic variance-covariance of herbivory resistance of an exotic plant Solidago altissima

Yuzu Sakata, Shunsuke Utsumi, Timothy Craig, Joanne Itami & Takayuki Ohgushi
The variability in the genetic variance-covariance (G-matrix) in plant resistance and its role in the evolution of invasive plants have been long overlooked. We conducted an additional analysis of the data of a reciprocal transplant experiment with tall goldenrod, Solidago altissima, in multiple garden sites within its native range (USA) and introduced range (Japan). We explored the differences in G-matrix of resistance to two types of foliar herbivores: (1) a lace bug that is native...

A non‐steady state model based on dual nitrogen and oxygen isotopes to constrain moss nitrate uptake and reduction

Xue-Yan Liu, Di Wu, Xin Song, Yu-Ping Dong, Chong-Juan Chen, Wei Song, Cong-Qiang Liu & Keisuke Koba
Epilithic mosses are early colonizers of the terrestrial biosphere, constitute a special ecosystem regulating rock-atmosphere interactions, and may be more restricted in their nitrogen (N) supply than other mosses. Terrestrial mosses can take up nitrate (NO3-), a major form of bioavailable N, from soil substrates. However, the importance of substrate NO3- relative to atmospheric NO3- remains unclear in moss NO3- utilization. This has prevented the understanding of moss NO3- dynamics and its responses to environmental...

Data from: Oceanic thermal structure mediates dive sequences in a foraging seabird

Xavier Meyer, Andrew MacIntosh, André Chiaradia, Akiko Kato, Francisco Ramírez, Cedric Sueur & Yan Ropert-Coudert
1. Changes in marine ecosystems are easier to detect in upper-level predators, like seabirds, which integrate trophic interactions throughout the food web. 2. Here, we examined whether diving parameters and complexity in the temporal organisation of foraging sequences of little penguins (Eudyptula minor) are influenced by sea surface temperature (SST), water stratification and wind speed – three oceanographic features influencing prey abundance and distribution in the water column. 3. Using fractal time series analysis, we...

Host-plant choices determined by reproductive interference between closely related butterflies

Naota Ohsaki, Masaaki Ohata, Yoshibumi Sato & Mark D. Rausher
A number of empirical studies have concluded that reproductive interference, RI, contributes to parapatric species distributions or sexual exclusion. However, the possibility that divergent host-plant use in phytophagous insects is due to sexual exclusion has seldom been considered. Here we present evidence that RI is responsible for different host-plant use by two Pierid butterfly species, Pieris napi and P. melete . When a novel host species was introduced about 50 years ago, two Pierid butterfly...

Data from: Patterns of intraspecific variation through ontogeny–a case study of the Cretaceous nautilid Eutrephoceras dekayi and modern Nautilus pompilius

Amane Tajika, Neil Landman, Naoki Morimoto, Kenji Ikuno & Tom Linn
The magnitude and ontogenetic patterns of intraspecific variation can provide important insights into the evolution and development of organisms. Understanding the intraspecific variation of organisms is a key to correctly pursuing studies in major fields of palaeontology. However, intraspecific variation has been largely overlooked in ectocochleate cephalopods, particularly nautilids. Furthermore, little is known regarding the evolutionary pattern. Here, we present morphological data for the Cretaceous nautilid Eutrephoceras dekayi (Morton, 1834) and the modern nautilid Nautilus...

Data from: Mapping molar shapes on signaling pathways

Wataru Morita, Naoki Morimoto & Jukka Jernvall
A major challenge in evolutionary developmental biology is to understand how genetic mutations underlie phenotypic changes. In principle, selective pressures on the phenotype screen the gene pool of the population. Teeth are an excellent model for understanding evolutionary changes in the genotype-phenotype relationship since they exist throughout vertebrates. Genetically modified mice (mutants) with abnormalities in teeth have been used to explore tooth development. The relationship between signaling pathways and molar shape, however, remains elusive due...

Color scores, COI haplotypes and SNP data for Phelotrupes auratus individuals

Yoshifumi Araki & Teiji Sota
We studied the population genetic structure underlying the geographic variation in the structural color of the geotrupid dung beetle, Phelotrupes auratus, which exhibits metallic body colors of different reflectance wavelengths perceived as red, green, and indigo. These forms occur parapatrically in an area of Japan. The color variation was not related to variation in climatic factors. Using single-nucleotide polymorphisms (SNPs) from restriction-site associated DNA sequences, we discriminated five groups of populations (west/red, south/green, south/indigo, south/red,...

Data: Sexual selection increased offspring production via evolution of male and female traits

Daisuke Kyogoku & Teiji Sota
Phenotypic evolution driven by sexual selection can impact the fitness of individuals and thus population performance through multiple mechanisms, but it is unresolved how and when sexual selection affects offspring production by females.We examined the effects of sexual selection on offspring production by females using replicated experimental evolutionary lines of Callosobruchus chinensis that were kept under polygamy (with sexual selection) or monogamy (without sexual selection) for 21 generations. We found that polygamous-line pairs produced more...

Fine-scale empirical data on niche divergence and homeolog expression patterns in an allopolyploid and its diploid progenitor species

Reiko Akiyama, Jainqiang Sun, Masaomi Hatakeyama, Heidi Lischer, Roman Briskine, Angela Hay, Xiangchao Gan, Miltos Tsiantis, Hiroshi Kudoh, Masahiro Kanaoka, Jun Sese, Kentaro Shimizu & Rie Shimizu-Inatsugi
Polyploidization is pervasive in plants, but little is known about the niche divergence of wild allopolyploids (species that harbor polyploid genomes originating from different diploid species) relative to their diploid progenitor species and the gene expression patterns that may underlie such ecological divergence. We conducted a fine-scale empirical study on habitat and gene expression of an allopolyploid and its diploid progenitors. We quantified soil properties and light availability of habitats of an allotetraploid Cardamine flexuosa...

Targeting diamondback moth in greenhouses by attracting specific native parasitoids with herbivory-induced plant volatiles

Junji Takabayashi
We investigated whether recruitment of specific parasitoids using a specific blend of synthetic herbivory-induced plant volatiles (HIPVs) could be a novel method of pest control in greenhouses. In the Miyama rural area in Kyoto, Japan,diamondback moth (DBM) (Plutella xylostella) larvae are an important pest of cruciferous crops in greenhouses, and Cotesia vestalis, a larval parasitoid of DBM, are found in the surrounding areas. Dispensers of HIPVs that attracted C. vestalis and honey feeders were set...

Data from: BCI training to move a virtual hand reduces phantom limb pain: a randomized crossover trial

Takufumi Yanagisawa, Ryohei Fukuma, Ben Seymour, Masataka Tanaka, Koichi Hosomi, Okito Yamashita, Haruhiko Kishima, Yukiyasu Kamitani & Youichi Saitoh
Objective: To determine whether training with a brain–computer interface (BCI) to control an image of a phantom hand, which moves based on cortical currents estimated from magnetoencephalographic signals, reduces phantom limb pain. Methods: Twelve patients with chronic phantom limb pain of the upper limb due to amputation or brachial plexus root avulsion participated in a randomized single-blinded crossover trial. Patients were trained to move the virtual hand image controlled by the BCI with a real...

Divergent strategies in faeces avoidance between two cercopithecoid primates

Cécile Sarabian, Barthélémy Ngoubangoye & Andrew MacIntosh
Parasites constitute a major selective pressure which has shaped animal behaviour through evolutionary time. One adaption to parasites consists of recognizing and avoiding substrates or cues that indicate their presence. Among substrates harbouring infectious agents, faeces are known to elicit avoidance behaviour in numerous animal species. However, the function and mechanisms of faeces avoidance in non-human primates has been largely overlooked by scientists. In this study, we used an experimental approach to investigate whether aversion...

Interspecific social dominance networks reveal mechanisms promoting coexistence in sympatric charrs in Hokkaido, Japan

Kurt Fausch, Shigeru Nakano, Satoshi Kitano, Yoichiro Kanno & Seoghyun Kim
1. Coexistence of species requires equalizing mechanisms that minimize fitness differences, which are balanced by stabilizing mechanisms that enhance negative intraspecific interactions versus interspecific ones. Here, we develop a simple theoretical framework that allows measuring the relative strength of intraspecific versus interspecific competition in dominance hierarchies. We use it to evaluate mechanisms promoting coexistence between congeneric charrs that compete for foraging positions, which strongly influence density-dependent growth and survival. 2. Agonistic interactions (n = 761)...

Data from: Experimental amelioration of harsh weather speeds growth and development in a tropical montane songbird

Adam Mitchell, Jordan Boersma, Anthonio Anthony, Kanehiro Kitayama & Thomas Martin
Organisms living at high elevations generally grow and develop slower than those at lower elevations. Slow montane ontogeny is thought to be an evolved adaptation to harsh environments that improve juvenile quality via physiological tradeoffs. However, slower montane ontogeny may also reflect proximate influences of harsh weather on parental care and offspring development. We experimentally heated and protected nests from rain to ameliorate harsh montane weather conditions for Mountain Blackeyes (Chlorocharis emiliae), a montane songbird...

Phosphorus allocation to and resorption from leaves regulate the residence time of phosphorus in aboveground forest biomass on Mount Kinabalu, Borneo

Yuki Tsujii, Shin-Ichiro Aiba & Kanehiro Kitayama
1. The residence time of phosphorus (P) in trees is a consequence of plant adaptation to P deficiency, with longer P residence time on soils with low P availability. P residence time has been studied at the leaf or canopy level but seldom at the whole-tree level. Whereas P residence time at the leaf or canopy level is largely determined by leaf longevity and the resorption of P before leaf abscission, P residence time at...

Data from: Estimating fish population abundance by integrating quantitative data on environmental DNA and hydrodynamic modeling

Keiichi Fukaya, Hiroaki Murakami, Seokjin Yoon, Kenji Minami, Yutaka Osada, Satoshi Yamamoto, Reiji Masuda, Akihide Kasai, Kazushi Miyashita, Toshifumi Minamoto & Michio Kondoh
Molecular analysis of DNA left in the environment, known as environmental DNA (eDNA), has proven to be a powerful and cost-effective approach to infer occurrence of species. Nonetheless, relating measurements of eDNA concentration to population abundance remains difficult because detailed knowledge on the processes that govern spatial and temporal distribution of eDNA should be integrated to reconstruct the underlying distribution and abundance of a target species. In this study, we propose a general framework of...

Non-adaptive host-use specificity in tropical armored scale insects

Nate B. Hardy, Daniel Peterson, Geoffrey Morse, Takao Itioka, Jiufeng Wei & Benjamin Normark
Most herbivorous insects are diet specialists in spite of the apparent advantages of being a generalist. This conundrum might be explained by fitness trade-offs on alternative host plants, yet evidence of such trade-offs has been elusive. Another hypothesis is that specialization is non-adaptive, evolving through neutral population genetic processes and within the bounds of historical constraints. Here we report on a striking lack of evidence for the adaptiveness of specificity in tropical canopy communities of...

Registration Year

  • 2020
    30

Resource Types

  • Dataset
    30

Affiliations

  • Kyoto University
    30
  • Tohoku University
    3
  • Hokkaido University
    3
  • Kyoto University of Advanced Science
    2
  • Chiba University
    2
  • University of the Ryukyus
    2
  • United States Geological Survey
    2
  • Osaka University
    2
  • Colorado State University
    2
  • Kobe University
    2