61 Works

Data from: Genetic differences and phenotypic plasticity in body size between high- and low-altitude populations of the ground beetle Carabus tosanus

Yuzo Tsuchiya, Yasuoki Takami, Yutaka Okuzaki & Teiji Sota
The body size of a univoltine carabid beetle Carabus tosanus on Shikoku Island, Japan, was clearly smaller in higher-altitude populations (subspecies), which possibly represents incipient speciation. To explore the determinants of altitudinal differences in body size in this species, we studied the degree of phenotypic plasticity by conducting rearing experiments at two constant temperatures, and examined genetic differences through interpopulation crosses. At 15°C, C. tosanus had a longer developmental period and a shorter adult body...

Data from: The release rate of environmental DNA from juvenile and adult fish

Atsushi Maruyama, Keisuke Nakamura, Hiroki Yamanaka, Michio Kondoh & Toshifumi Minamoto
The environmental DNA (eDNA) technique is expected to become a powerful, non-invasive tool for estimating the distribution and biomass of organisms. This technique was recently shown to be applicable to aquatic vertebrates by collecting extraorganismal DNA floating in the water or absorbed onto suspended particles. However, basic information on eDNA release rate is lacking, despite it being essential for practical applications. In this series of experiments with bluegill sunfish (Lepomis macrochirus), we examined the effect...

Data from: Testing a “genes-to-ecosystems” approach to understanding aquatic-terrestrial linkages

Gregory Crutsinger, Seth Rudman, Mariano Rodriguez-Cabal, Athena Mckown, Takuya Sato, Andrew M. MacDonald, Julian Heavyside, Armando Geraldes, Edmund Hart, Carri LeRoy, Rana El-Sabaawi, Athena D. McKown, Gregory M. Crutsinger, Seth M. Rudman, Mariano A. Rodriguez-Cabal, Edmund M. Hart, Carri J. LeRoy & Rana W. El-Sabaawi
A ‘genes-to-ecosystems’ approach has been proposed as a novel avenue for integrating the consequences of intraspecific genetic variation with the underlying genetic architecture of a species in order to shed light on the relationships among hierarchies of ecological organization (genes [RIGHTWARDS ARROW] individuals [RIGHTWARDS ARROW] communities [RIGHTWARDS ARROW] ecosystems). However, attempts to identify genes with major effect on the structure of communities and/or ecosystem processes have been limited and a comprehensive test of this approach...

Data from: The price of being seen to be just: an intention signalling strategy for indirect reciprocity

Hiroki Tanaka, Hisashi Ohtsuki & Yohsuke Ohtsubo
Cooperation among strangers is a marked characteristic of human sociality. One prominent evolutionary explanation for this form of human cooperation is indirect reciprocity, whereby each individual selectively helps people with a ‘good’ reputation, but not those with a ‘bad’ reputation. Some evolutionary analyses have underscored the importance of second-order reputation information (the reputation of a current partner's previous partner) for indirect reciprocity as it allows players to discriminate justified ‘good’ defectors, who selectively deny giving...

Data from: High cell density upregulates calcium oscillation by increasing calcium store content via basal mitogen-activated protein kinase activity

Mitsuhiro Morita, Akira Nakane, Yuki Fujii, Shohei Maekawa & Yoshihisa Kudo
Calcium releases of non-excitable cells are generally a combination of oscillatory and non-oscillatory patterns, and factors affecting the calcium dynamics are still to be determined. Here we report the influence of cell density on calcium increase patterns of clonal cell lines. The majority of HeLa cells seeded at 1.5 x 104/cm2 showed calcium oscillations in response to histamine and ATP, whereas cells seeded at 0.5 x 104/cm2 largely showed transient and sustained calcium increases. Cell...

Data from: Nuclear internal transcribed spacer-1 as a sensitive genetic marker for environmental DNA studies in common carp Cyprinus carpio

Toshifumi Minamoto, Kimiko Uchii, Teruhiko Takahara, Takumi Kitayoshi, Tsuji Satsuki, Hiroki Yamanaka, Hideyuki Doi & Satsuki Tsuji
The recently developed environmental DNA (eDNA) analysis has been used to estimate the distribution of aquatic vertebrates by using mitochondrial DNA (mtDNA) as a genetic marker. However, mtDNA markers have certain drawbacks such as variable copy number and maternal inheritance. In this study, we investigated the potential of using nuclear DNA (ncDNA) as a more reliable genetic marker for eDNA analysis by using common carp (Cyprinus carpio). We measured the copy numbers of cytochrome b...

Seismic moment rate and recurrence interval of small-size earthquakes from a 3-D perspective

Yingfeng Ji
Repeating postseismic event sequences associated with featured variations of the moment magnitude spectrum and recurrence interval have been fruitfully studied by previous researchers. However, similar features of recorded regular earthquakes are much less frequently observed due to their lower event recurrence frequencies and the range or accuracy limits of the employed observation systems. Based on rapidly increasing catalogs of earthquakes with high-resolution epicenter locations made possible in recent decades and combined with three-dimensional (3-D) numerical...

Venus Climate Orbiter Akatsuki IR1 Longitude-Latitude Map Data

Shin-ya Murakami, Kazunori Ogohara, Masahiro Takagi, Hiroki Kashimura, Manabu Yamada, Toru Kouyama, Takeshi Horinouchi & Takeshi Imamura
This dataset contains longitude-latitude map data created from images acquired by the IR1 instrument of the Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) spacecraft. This dataset consists of NetCDF and FITS files. The longitude-latitude map data are included as Level 3 product in NetCDF. During process of creating longitude-latitude map data, pointing of spacecraft was corrected using limb-fitting technique. Detected limb points and information on fitted ellipse are provided as auxiliary data,...

Venus Climate Orbiter Akatsuki IR2 Longitude-Latitude Map Data

Shin-ya Murakami, Kazunori Ogohara, Masahiro Takagi, Hiroki Kashimura, Manabu Yamada, Toru Kouyama, Takeshi Horinouchi & Takeshi Imamura
This dataset contains longitude-latitude map data created from images acquired by the IR2 instrument of the Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) spacecraft. This dataset consists of NetCDF and FITS files. The longitude-latitude map data are included as Level 3 product in NetCDF. During process of creating longitude-latitude map data, pointing of spacecraft was corrected using limb-fitting technique. Detected limb points and information on fitted ellipse are provided as auxiliary data,...

Phylogeographic analysis of character displacement in feeding phenotypes of snail-feeding Acoptolabrus ground beetles: Morphological measurements

Yasuoki Takami
Ecological character displacement predicts that interspecific resource competition results in greater trait divergence between species in sympatry than in allopatry. In this study, we characterize character displacement in 8 species of snail-feeding Acoptolabrus ground beetles (Coleoptera, Carabidae, genus Carabus) in the Far East. Acoptolabrus exhibit divergent feeding phenotypes, including species with a slender forebody for intruding large shells and species with stout heads and mandibles for crushing small shells. Distance measurements (in mm) deposited here...

Additional file 1 of Functional brain imaging interventions for radiation therapy planning in patients with glioblastoma: a systematic review

John T Ryan, Masao Nakayama, Ian Gleeson, Liam Mannion, Moshi Geso, Jennifer Kelly, Sweet Ping Ng & Nicholas Hardcastle
Additional file 1. A Database Search Strategy.

Areal (+)-borneol modulates root morphology, auxin signalling and meristematic activity in Arabidopsis roots

Junji Takabayashi, Kyohei Fukuda, Masayoshi Uefune, Hidehiro Fukaki, Yasuo Yamauchi, Ikuko Hara-Nishimura, Rika Ozawa, Kenji Matsui, Kazunori Okada, Ryozo Imai, Kenshi Takahashi, Shinichi Enami, Rene Wurst & Junji Takabayashi
One of the characteristic aspects of odour sensing in humans is the activation of olfactory receptors in a slightly different manner to different enantiomers. Here, we focused on whether plants showed enantiomer-specific responses similar to that in humans. We exposed Arabidopsis seedlings to methanol (control) and (+)- or (−)-borneol, and found that only (+)-borneol reduced the root length. Furthermore, the root-tip width was more increased upon (+)-borneol exposure than upon (−)-borneol exposure. In addition, root-hair...

Data for: Relationships between reproductive character displacement in genital morphology and the population-level cost of interspecific mating: Implications for the Templeton effect

Taira Nishimura, Karen Terada, Tian Xia & Yasuoki Takami
Natural selection against maladaptive interspecific reproductive interactions may cause greater divergence in mating traits between sympatric populations than between allopatric populations in a pair of species, known as reproductive character displacement (RCD), evidence for the lock-and-key hypothesis of genital evolution. However, the relative importance of various processes contributing to RCD in genital morphology (e.g., reinforcement, reproductive interference, and population filtering or the Templeton effect) is not clear. Here, we examined hypotheses for RCD in genital...

Data from: Pushing the limits to tree height: could foliar water storage compensate for hydraulic constraints in Sequoia sempervirens

Hiroaki Ishii, Wakana Azuma, Keiko Kuroda, Stephen C. Sillett & H. Roaki Ishii
1. The constraint on vertical water transport is considered an important factor limiting height growth and maximum attainable height of trees. Here we show evidence of foliar water storage as a mechanism that could partially compensate for this constraint in Sequoia sempervirens, the tallest species. 2. We measured hydraulic and morpho-anatomical characteristics of foliated shoots of tall S. sempervirens trees near the wet, northern and dry, southern limits of its geographic distribution in California, USA....

Data from: Morphological integration and pleiotropy in the adaptive body shape of the snail-feeding carabid beetle Damaster blaptoides

Junji Konuma, Satoshi Yamamoto & Teiji Sota
The snail-feeding carabid beetle Damaster blaptoides exhibits diverse head and thorax morphologies, and these morphotypes are linked with two alternative feeding behaviors. Stout-shaped beetles feed on snails by crushing the shells, whereas slender-shaped beetles consume snails by inserting their heads into the shells. A trade-off exists between these feeding strategies. Because intermediate-shaped beetles are less proficient in these two behaviors, stout-slender morphological divergence occurs between related species feeding on land snails. To examine the genetic...

Data from: Land abandonment and intensification diminish spatial and temporal β-diversity of grassland plants and herbivorous insects within paddy terraces

Kei Uchida & Atushi Ushimaru
1. Although traditional land-use and management practices are known to enhance environmental heterogeneity in agricultural lands, loss of heterogeneity resulting from recent land-use changes can lead to spatiotemporal β-diversity losses (biotic homogenization). However, patterns and causes of β-diversity loss, especially at a within-field scale, have remained unexplored. 2. We examined β-diversity declines in plants, butterflies and orthopterans resulting from land abandonment and intensification in semi-natural grasslands on paddy margins at a within-field scale in relation...

Data from: Host manipulation by an ichneumonid spider ectoparasitoid that takes advantage of preprogrammed web-building behaviour for its cocoon protection

Keizo Takasuka, Tomoki Yasui, Ishigami Toru, Kensuke Nakata, Rikio Matsumoto, Kenichi Ikeida & Kaoru Maeto
Host manipulation by parasites and parasitoids is a fascinating phenomenon within evolutionary ecology, representing an example of extended phenotypes. To elucidate the mechanism of host manipulation, revealing the origin and function of the invoked actions is essential. Our study focused on the ichneumonid spider ectoparasitoid Reclinervellus nielseni, which turns its host spider (Cyclosa argenteoalba) into a drugged navvy, to modify the web structure into a more persistent cocoon web so that the wasp can pupate...

Data from: Functional diversity and trade-offs in divergent anti-predator morphologies in herbivorous insects

Tadashi Shinohara & Yasuoki Takami
Predator–prey interactions may be responsible for enormous morphological diversity in prey species. We performed predation experiments with morphological manipulations (ablation) to investigate the defensive function of dorsal spines and explanate margins in Cassidinae leaf beetles against three types of predators: assassin bugs (stinger), crab spiders (biter), and tree frogs (swallower). There was mixed support for the importance of primary defense mechanisms (i.e., preventing detection or identification). Intact spined prey possessing dorsal spines were more likely...

Subduction thermal regime, slab dehydration, and seismicity distribution beneath Hikurangi based on 3-D simulations

Nobuaki Suenaga, Yingfeng Ji, Shoichi Yoshioka & Deshan Feng
The downdip limit of seismogenic interfaces inferred from the subduction thermal regime by thermal models has suggested relating to the faulting instability caused by brittle failure regime in various plate convergent systems. However, the featured three-dimensional (3-D) temperature structure especially along the horizontal two-dimensional (2-D) dimension of a subduction zone remains still poorly constrained. To robustly investigate and further map the horizontal distribution of subduction regime and subsequently induced slab dewatering in a decent plate...

Data from: Impact of sexually antagonistic genital morphologies on female reproduction and wild population demography

Yasuoki Takami, Tomohiko Fukuhara, Jun Yokoyama & Masakado Kawata
Sexual conflict is a strong driver of evolution. The evolutionary outcomes of sexual conflict can, in turn, influence ecological processes within populations, e.g., demography. However, evidence for the latter hypothesis is scarce, especially in the wild. Here, we show that sexual conflict is associated with demographic processes determining population size in the ground beetle Carabus insulicola with elaborate male and female genitalia, based on individual- and population-level analyses. We found that sexually antagonistic selection can...

Venus Climate Orbiter Akatsuki UVI Longitude-Latitude Map Data

Shin-ya Murakami, Kazunori Ogohara, Masahiro Takagi, Hiroki Kashimura, Manabu Yamada, Toru Kouyama, Takeshi Horinouchi & Takeshi Imamura
This dataset contains longitude-latitude map data created from images acquired by the UVI instrument of the Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) spacecraft. This dataset consists of NetCDF and FITS files. The longitude-latitude map data are included as Level 3 product in NetCDF. During process of creating longitude-latitude map data, pointing of spacecraft was corrected using limb-fitting technique. Detected limb points and information on fitted ellipse are provided as auxiliary data,...

The effects of resource subsidy duration in a detritus-based stream ecosystem: a mesocosm experiment

Takuya Sato, Gaku Takimoto & Rui Ueda
1. Most resource subsidies are temporally variable, dynamically affecting the consumer populations, community structures, and ecosystem functions of recipient ecosystems. Temporally variable resource subsidies are characterized by the duration, magnitude, timing, and frequency of resource subsidy inputs. These different characteristics may have different mechanisms by which to affect recipient ecosystems. 2. Few studies have examined the duration of resource subsidy inputs on recipient ecosystems, although there exist previous studies focusing on magnitude, timing, and frequency....

Mesozoic origin and out-of-India radiation of ricefishes (Adrianichthyidae)

Kazunori Yamahira, Satoshi Ansai, Ryo Kakioka, Hajime Yaguchi, Takeshi Kon, Hirozumi Kobayashi, Javier Montenegro, Shingo Fujimoto, Ryosuke Kimura, Yusuke Takehana, Davin Setiamarga, Yasuoki Takami, Rieko Tanaka, Ken Maeda, Hau Tran, Noriyuki Koizumi, Shinsuke Morioka, Vongvichith Bounsong, Katsutoshi Watanabe, Prachya Musikasinthorn, Sein Tun, L. K. C Yun, Kawilarang Masengi, VK Anoop, Rajeev Raghavan … & Jun Kitano
The Indian subcontinent has an origin geologically different from Eurasia, but many terrestrial animal and plant species on it have congeneric or sister species in other parts of Asia, especially in the Southeast. This faunal and floral similarity between India and Southeast Asia is explained by either of the two biogeographic scenarios, ‘into-India’ or ‘out-of-India.’ Phylogenies based on complete mitochondrial genome and five nuclear genes were undertaken for ricefishes (Adrianichthyidae) to examine which of these...

Additional file 1 of Olfactory marker protein is unlikely to be cleaved by calpain 5

Noriyuki Nakashima, Kie Nakashima, Akiko Nakashima & Makoto Takano
Supplementary Material 1

Additional file 1 of Functional brain imaging interventions for radiation therapy planning in patients with glioblastoma: a systematic review

John T Ryan, Masao Nakayama, Ian Gleeson, Liam Mannion, Moshi Geso, Jennifer Kelly, Sweet Ping Ng & Nicholas Hardcastle
Additional file 1. A Database Search Strategy.

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