5 Works

Intra-population genetic variation in the level and rhythm of daily activity in Drosophila immigrans

Takahisa Ueno & Yuma Takahashi
Genetic diversity within a population, such as polymorphisms and personality, is considered to improve population performance because such intraspecific variations have the potential to alleviate the competition for a limited resource or the risk of predation and sexual harassment at a population-level. Variation in the level and rhythm of daily activity in a population could also affect population performance by directly altering ecological, social, and sexual interactions among individuals. However, it remains to be elucidated...

Data from: Magnitude and direction of stream-forest community interactions change with time scale

Amy Marcarelli, Colden Baxter, Joseph Benjamin, Yo Miyake, Masashi Murakami, Kurt Fausch & Shigeru Nakano
Networks of direct and indirect biotic interactions underpin the complex dynamics and stability of ecological systems, yet experimental and theoretical studies often yield conflicting evidence regarding the direction (positive or negative) or magnitude of these interactions. We revisited pioneering datasets collected at the deciduous forested Horonai Stream and conducted ecosystem-level syntheses to demonstrate that the direction of direct and indirect interactions can change depending on the timescale of observation. Prior experimental studies showed that terrestrial...

Changes in transcriptomic response to salinity stress induce the brackish water adaptation in a freshwater snail

Takumi Yokomizo & Yuma Takahashi
Studying mechanisms of the establishment of a population in a novel environment allows us to examine the process of local adaptations and subsequent range expansion. In a river system, detecting genetic or phenotypic differences between a freshwater and brackish water population could contribute to our understanding of the initial process of brackish water adaptations. Here, we investigated behavioral and gene expression responses to the saltwater in a freshwater and brackish water population of the freshwater...

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...

Plant-caterpillar interaction matrices of temperate broadleaf forests

Carlo Lutz Seifert, Martin Volf, Leonardo R. Jorge, Tomokazu Abe, Grace Carscallen, Pavel Drozd, Rajesh Kumar, Greg P. A. Lamarre, Martin Libra, Maria E. Losada, Scott E. Miller, Masashi Murakami, Geoffrey Nichols, Petr Pyszko, Martin Šigut, David L. Wagner & Vojtěch Novotny
1. Assemblages of insect herbivores are structured by plant traits such as nutrient content, secondary metabolites, physical traits, and phenology. Many of these traits are phylogenetically conserved, implying a decrease in trait similarity with increasing phylogenetic distance of the host plant taxa. Thus, a metric of phylogenetic distances and relationships can be considered a proxy for phylogenetically conserved plant traits and used to predict variation in herbivorous insect assemblages among co-occurring plant species. 2. Using...

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