7 Works

Data from: Effects of spatial structure of population size on the population dynamics of barnacles across their elevational range

Keiichi Fukaya, Takehiro Okuda, Masahiro Nakaoka & Takashi Noda
1. Explanations for why population dynamics vary across the range of a species reflect two contrasting hypotheses: (1) temporal variability of populations is larger in the centre of the range compared to the margins because overcompensatory density dependence destabilizes population dynamics, and (2) population variability is larger near the margins, where populations are more susceptible to environmental fluctuations. In both of these hypotheses, positions within the range are assumed to affect population variability. 2. In...

Data from: The consequences of demand-driven seed provisioning for sexual differences in reproductive investment in Thalictrum occidentale (Ranunculaceae)

Takashi Y. Ida, Lawrence D. Harder & Gaku Kudo
Many iteroparous angiosperms may benefit from flexible annual resource allocation in response to variable reproductive opportunities induced by external conditions. If maximal reproductive investment is fixed, lack of reproductive sinks would cause resource redistribution to other sinks. Alternatively, reproductive investment may vary depending on the demand of reproductive sinks, changing source-sink relations. In particular, differential responses by males and females to the demands of flower and seed production may cause sexual dimorphism. We assess the...

Data from: Adaptive acceleration in growth and development of salamander hatchlings in cannibalistic situations

Osamu Kishida, Ayumi Tezuka, Akiko Ikeda, Kunio Takatsu & Hirofumi Michimae
In most animal species, the hatchling stage is a highly vulnerable life history stage. In many fish and amphibian species, hatchling abundance varies substantially among sites and years, with the result that selection strength in conspecific interactions such as cannibalism is also variable. The variability of selection leads species to evolve phenotypic plasticity, and adaptive trait changes in hatchlings that depend on the density of conspecifics can therefore be expected. However, plasticity strategies in response...

Data from: Convergences and trends in the evolution of the archosaur pelvis

Masaya Iijima & Yoshitsugu Kobayashi
The pelvic structure in non-avian archosaurs plays a key role in understanding the evolution of terrestrial locomotor patterns because the pelvis contains major attachment sites for proximal hind limb musculature. In order to investigate patterns of pelvic evolution in archosaurs, this study compiled three pelvic indices, as well as femoral head orientation, for 92 archosaur taxa. With the metrics and a reconstructed supertree, we examined the correlated evolution of the pelvis and femur, the correlation...

Data from: Phylogenomics resolves the timing and pattern of insect evolution

Bernhard Misof, Shanlin Liu, Karen Meusemann, Ralph S. Peters, Alexander Donath, Christoph Mayer, Paul B. Frandsen, Jessica Ware, Tomas Flouri, Rolf G. Beutel, Oliver Niehuis, Malte Petersen, Fernando Izquierdo-Carrasco, Torsten Wappler, Jes Rust, Andre J. Aberer, Ulrike Aspöck, Horst Aspöck, Daniela Bartel, Alexander Blanke, Simon Berger, Alexander Böhm, Thomas Buckley, Brett Calcott, Junqing Chen … & Xin Zhou
Insects are the most speciose group of animals, but the phylogenetic relationships of many major lineages remain unresolved. We inferred the phylogeny of insects from 1478 protein-coding genes. Phylogenomic analyses of nucleotide and amino acid sequences, with site-specific nucleotide or domain-specific amino acid substitution models, produced statistically robust and congruent results resolving previously controversial phylogenetic relations hips. We dated the origin of insects to the Early Ordovician [~479 million years ago (Ma)], of insect flight...

Data from: The Kuroshio Current influences genetic diversity and population genetic structure of a tropical seagrass, Enhalus acoroides

Yuichi Nakajima, Yu Matsuki, Chunlan Lian, Miguel D. Fortes, Wilfredo H. Uy, Wilfredo L. Campos, Masahiro Nakaoka & Kazuo Nadaoka
Information on genetic diversity and differentiation of seagrass populations is essential for the conservation of coastal ecosystems. However, little is known about the seagrasses in the Indo-West Pacific Ocean, where the world's highest diversity of seagrasses occurs. The influence of sea currents on these populations is also unknown. We estimated the genetic diversity and population genetic structure and identified reproductive features in Enhalus acoroides populations from the Yaeyama Islands, Hainan Island and the Philippines. The...

Data from: Territorial males can sire more offspring in nests with smaller doors in the cichlid Lamprologus lemairii

Kazutaka Ota, Satoshi Awata, Masaya Morita, Ryota Yokoyama & Masanori Kohda
To examine how territorial males counter reproductive parasites, we examined the paternity of broods guarded by territorial males using 5 microsatellite loci and factors that determine siring success in a wild population of the Lake Tanganyika cichlid Lamprologus lemairii. Females enter rock holes (nests) and spawn inside, and territorial males release milt over the nest openings. Sneakers attempt to dart into the nests, but territorial males often interrupt the attempt. The body size of territorial...

Registration Year

  • 2014
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Resource Types

  • Dataset
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Affiliations

  • Hokkaido University
    7
  • Kitasato University
    1
  • University of Hamburg
    1
  • Zoological Research Museum Alexander Koenig
    1
  • Johns Hopkins University
    1
  • Tokyo Institute of Technology
    1
  • Ehime University
    1
  • Australian National University
    1
  • University of Memphis
    1
  • Mindanao State University Naawan
    1