24 Works

Correlation of giant earthquakes with the lunar phase in seven Indo-Pacific subduction zones and around Mongolia

Yoshiaki Fujii, Yusuke Tsuboi, Anjula Dassanayake, Junichi Kodama, Daisuke Fukuda & Badrul Alam
Lunar phases of earthquakes worldwide with MW ≥ 8 between 1900 and November 15, 2016, were calculated. The null hypothesis that the occurrences of the giant earthquakes are random was assumed and tested for some subduction zones and around Mongolia. The null hypothesis was statistically rejected for Southern Chile, Alaska, Peru, the Japan Trench, the Kuril Islands, and Around Mongolia. The rejection of the random null hypothesis means that the occurrences of the giant earthquakes...

Dataset for group living and duetting in barbet species

Masayo Soma & Henrik Brumm
The duets of birds have intrigued biologists for a long time, yet much remains unknown about the evolution of these striking collective displays. This is because previous studies on duet evolution have been biased to songbirds and neglected other bird groups. In songbirds, the absence of migration has been found to predict the occurrence of duetting, indirectly supporting the idea that duet communication is linked with pair-bonding. Here, we used phylogenetic comparative analyses in a...

Insights from Fisher's geometric model on the likelihood of speciation under different histories of environmental change

Ryo Yamaguchi & Sarah P. Otto
All code and simulation data necessary to repeat the analysis described in "Insights from Fisher’s geometric model on the likelihood of speciation under different histories of environmental change."

Influence of Quaternary environmental changes on mole populations inferred from mitochondrial sequences and evolutionary rate estimation

Hitoshi Suzuki, Azusa Nakamoto, Masashi Harada, Reiko Mitsuhashi, Kimiyuki Tsuchiya, Alexey P. Kryukov & Akio Shinohara
Quaternary environmental changes fundamentally influenced genetic diversity of the temperate-zone terrestrial animals, including those on the Japanese Archipelago. The genetic diversity of present-day populations are taxon and region specific, but its determinants are poorly understood. Here, we analyzed cytochrome b gene (Cytb) sequences (1,140 bp) of mitochondrial DNA (mtDNA) to elucidate factors determining the genetic variation in three species of large moles: Mogera imaizumii and Mogera wogura occur in Northern and Southern mainland Japan (Honshu,...

Different effects of mating group size as male and as female on sex allocation in a simultaneous hermaphrodite

Masami Tamechika, Kohei Matsuno, Satoshi Wada & Yoichi Yusa
Sex allocation theory predicts that the optimal sexual resource allocation of simultaneous hermaphrodites is affected by mating group size (MGS). Although the original concept assumes that the MGS does not differ between male and female functions, the MGS in the male function (MGSm; i.e., the number of sperm recipients the focal individual can deliver its sperm to plus one) and that in the female function (MGSf; the number of sperm donors plus one) do not...

Data from: Evaluating the existence and benefit of major histocompatibility complex-based mate choice in an isolated owl population

Akira Sawada, Haruko Ando & Masaoki Takagi
How mate preferences evolve in the first place has been a major conundrum for sexual selection. Some hypotheses explaining this assume fitness benefit derived from subsequent generations. Major Histocompatibility Complex (MHC)-based mate choice is a representative example of the mate choice that is associated with such trans-generational mechanisms. To provide evidences for fitness benefit of MHC-based mate choice, previous studies assessed the association between own MHC genotype and own fitness components. However, the association between...

Tracking long-distance migration of marine fishes using compound-specific stable isotope analysis of amino acids

Jun Matsubayashi, Yutaka Osada, Kazuaki Tadokoro, Yoshiyuki Abe, Atsushi Yamaguchi, Kotaro Shirai, Kentaro Honda, Chisato Yoshikawa, Nanako Ogawa, Naohiko Ohkouchi, Naoto Ishikawa, Toshi Nagata, Hiroomi Miyamoto, Shigeto Nishino & Ichiro Tayasu
The long-distance migrations by marine fishes are difficult to track by field observation. Here, we propose a new method to track such migrations using stable nitrogen isotopic composition at the base of the food web (δ15NBase), which allows for direct comparison of isotope ratios between proxy organisms of the isoscape and the target migratory animal. We initially constructed a δ15NBase isoscape in the North Pacific by bulk and compound-specific isotope analyses of copepods (n =...

Community composition and photosynthetic physiology of phytoplankton in the western subarctic Pacific near the Kuril Islands with special reference to iron availability

Kazuhiro Yoshida, Suzu Nakamura, Jun Nishioka, Stanford Hooker & Koji Suzuki
The western subarctic Pacific (WSP) is known as one of the most productive regions among the world’s oceans in spring. However, its oceanic waters are also known as a High Nutrient, Low Chlorophyll (HNLC) region during summer due to low iron (Fe) availability in seawater. Indeed, recent studies have demonstrated that the distribution of Fe in the WSP is complex and heterogeneous. This study thus investigated the effects of Fe availability on the community composition...

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...

Synchronous and asynchronous root and shoot phenology in temperate woody seedlings

Kobayashi Makoto
Understanding variation in root and shoot growth phenology among species is crucial to understanding underlying mechanisms of temporal niche differentiation. However, little is known about the relationship between root and shoot phenology, or how this relationship varies among functional traits. We examined fine root and shoot phenology of 42 seedlings representing a variety of woody species that inhabit the cool temperate forests of northern Japan. Some aspects of phenology were common to the pool of...

rhinoceros auklet microsatellite data

Theresa Burg, Marie Prill, Katharine Studholme, Alice Domalik, Strahan Tucker, Catherine Jardine, Mark Maftei, Kenneth Wright, Jesse Beck, Russell Bradley, Ryan Carle, Thomas Good, Scott Hatch, Peter Hodum, Motohiro Ito, Scott Pearson, Nora Rojek, Leslie Slater, Yutaka Watanuki, Alexis Will, Aidan Bindoff, Glenn Crossin, Mark Drever & Mark Hipfner
We tested the hypothesis that segregation in wintering areas promotes population differentiation in a sentinel North Pacific seabird, the rhinoceros auklet (Cerorhinca monocerata). We collected tissue samples for genetic analyses on five breeding colonies in the western Pacific Ocean (Japan) and 13 in the eastern Pacific Ocean (California to Alaska), and deployed light-level geologgers on 12 eastern Pacific colonies to delineate wintering areas. Loggers were deployed previously on one colony in Japan. There was strong...

Plant-plant communication and community of herbivores on tall goldenrod (dataset)

Kaori Shiojiri, Satomi Ishizaki & Yoshino Ando
1. The volatiles from damaged plants induce defense in neighboring plants. The phenomenon is called plant-plant communication, plant talk or plant eavesdropping. Plant-plant communication has been reported to be stronger between kin plants than genetically far plants in sagebrush. 2. Why do plants distinguish volatiles from kin or genetically far plants? We hypothesize that plants respond only to important conditions; the induced defense is not free of cost for the plant. To clarify the hypothesis,...

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...

Data from: Late Quaternary environmental and human impacts on the mitochondrial DNA diversity of four commensal rodents in Myanmar

Hitoshi Suzuki
We addressed the spatiotemporal characteristics of four commensal rodent species occurring in Myanmar in comparison with other areas of the Indo-Malayan region. We examined sequence variations of the mitochondrial cytochrome bgene (Cytb) in the Pacific rat (Rattus exulans), roof rat(Rattus rattuscomplex, RrC), lesser bandicoot rat (Bandicota bengalensis), and house mouse(Mus musculus) using the recently developed time-dependent evolutionary rates of mtDNA. The Cytbsequences of RrC from Myanmar were shown to belong to RrC Lineage II, and...

Direct and indirect effects of noise pollution alter biological communities in and near noise-exposed environments

Masayuki Senzaki, Taku Kadoya & Clinton Francis
Noise pollution is pervasive across every ecosystem on Earth. Although decades of research have documented a variety of negative impacts of noise to organisms, key gaps remain, such as how noise affects different taxa within a biological community and how effects of noise propagate across space. We experimentally applied traffic noise pollution to multiple roadless areas and quantified the impacts of noise on birds, grasshoppers, and odonates. We show that acoustically-oriented birds have reduced species...

Morphological adaptation to avoid downstream displacement in juvenile landlocked salmon

Hiroyuki Yamada & Satoshi Wada
1. Downstream displacement by flood is serious for stream fishes inhabiting above tall check dams that block the ability of fishes to migrate upstream. Although downstream displacement may not be lethal, it can cause a large decline of the local population above the tall dam. 2. Many landlocked salmonid populations persist in such above-dam habitats, indicating that they have succeeded for many generations there. They may adapt to the unique situation in the above-dam habitats....

Enhanced recruitment of larger predators in the presence of large prey

Kunio Takatsu & Osamu Kishida
Most carnivores undergo diet shift from smaller to larger prey items during ontogeny. The trophic relationship between a growing carnivore and larger prey is representative of a size-structured predator-prey interaction. The strength of this interaction is, in part, determined by the recruitment of individuals from smaller predatory size classes into larger predatory size classes. Therefore, it is interesting to investigate how larger prey alter the recruitment of smaller predator size classes into larger predator size...

Python Script used in: Evolution of nuptial gifts and its coevolutionary dynamics with male-like persistence traits of females for multiple mating

Yoshitaka Kamimura, Kazunori Yoshizawa, Charles Lienhard, Rodrigo Ferreira & Jun Abe
Many male animals donate nutritive materials during courtship or mating to their female mates. Donation of large-sized gifts, though costly to prepare, can result in increased sperm transfer during mating and delayed remating of the females, resulting in a higher paternity. Nuptial gifting sometimes causes severe female-female competition for obtaining gifts (i.e., sex-role reversal in mate competition) and female polyandry, changing the intensity of sperm competition and the resultant paternity gains. We built a theoretical...

House mouse Mus musculus dispersal in East Eurasia inferred from 98 newly determined complete mitochondrial genome sequences

Hitoshi Suzuki
The Eurasianhouse mouse Mus musculusis useful for tracing prehistorical human movement related to the spread of farming. We determined whole mitochondrial DNA (mtDNA) sequences (ca. 16,000 bp) of 98 wild-derived individuals of two subspecies, M. m. musculus (MUS) and M. m. castaneus (CAS). We revealed directional dispersals reaching as far asthe Japanese Archipelagofrom their homelands. Our phylogenetic analysis indicated that the eastward movement of MUS was characterised by five step-wise regional extension events: 1) broad...

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...

Data from: Role of ambient pressure in self-heating torrefaction of dairy cattle manure

Takanori Itoh, Kazunori Iwabuchi, Naohiro Maemoku, Siyao Chen & Katsumori Taniguro
This paper describes the role of ambient pressure in self-heating torrefaction of livestock manure. We explored the initiating temperatures required to cause self-heating of wet dairy cattle manure at different ambient pressures (0.1, 0.4, 0.7, and 1.0 MPa). Then, we conducted proximate, elemental, and calorific analyses of biochar torrefied at 210, 250, and 290 °C. The results showed that self-heating was induced at 155 °C or higher for 0.1 MPa and at 115 °C or...

Sex-specific effects of cooperative breeding and colonial nesting on prosociality in corvids

Lisa Horn, Thomas Bugnyar, Michael Griesser, Marietta Hengl, Ei-Ichi Izawa, Tim Oortwijn, Christiane Rössler, Clara Scheer, Martina Schiestl, Masaki Suyama, Alex H. Taylor, Lisa-Claire Vanhooland, Auguste M. P. Von Bayern, Yvonne Zürcher & Jorg J. M. Massen
The investigation of prosocial behavior is of particular interest from an evolutionary perspective. Comparisons of prosociality across non-human animal species have, however, so far largely focused on primates, and their interpretation is hampered by the diversity of paradigms and procedures used. Here we present the first systematic comparison of prosocial behavior across multiple species in a taxonomic group outside the primate order, namely the bird family Corvidae. We measured prosociality in 8 corvid species, which...

Lineage-level distribution models lead to more realistic climate change predictions for a threatened crayfish

Zhixin Zhang, Jamie Kass, Stefano Mammola, Itsuro Koizumi, Xuecao Li, Kazunori Tanaka, Kousuke Ikeda, Toru Suzuki, Masashi Yokota & Nisikawa Usio
Aim: As climate change presents a major threat to biodiversity in the next decades, it is critical to assess its impact on species habitat suitability to inform biodiversity conservation. Species distribution models (SDMs) are a widely used tool to assess climate change impacts on species’ geographical distributions. As the term suggests, the species-level is the most commonly used taxonomic unit in SDMs. However, recently it has been demonstrated that SDMs considering taxonomic resolution below (or...

Sensory pollutants alter bird phenology and fitness across a continent

Clinton Francis, Masayuki Senzaki, Jesse Barber, Jenny Phillips, Neil Carter, Caren Cooper, Mark Ditmer, Kurt Fristrup, Christopher McClure, Daniel Mennitt, Luke Tyrrell, Jelena Vukomanovic & Ashley Wilson
Expansion of anthropogenic noise and night-lighting across our planet is of increasing conservation concern Despite growing knowledge of physiological and behavioural responses to these stimuli from single-species and local-scale studies, whether these pollutants affect fitness is less clear, as is how and why species vary in their sensitivity to these anthropic stressors. Here, we leverage a large citizen science dataset paired with high-resolution noise and light data from across the contiguous United States to assess...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Hokkaido University
  • Kyoto University
  • Max Planck Institute for Ornithology
  • Tohoku University
  • National Institute for Environmental Studies
  • Keio University
  • California Polytechnic State University
  • University of Michigan–Ann Arbor
  • Swiss Federal Institute of Aquatic Science and Technology
  • Federal University of Lavras