15 Works

Rapid multi-generational acclimation of coralline algal reproductive structures to ocean acidification

Billy Moore, Steeve Comeau, Matthieu Bekaert, Amelie Cossias, Ashley Purdy, Ellis Larcombe, Frankie Puerzer, Malcolm McCulloch & Christopher Cornwall
The future of coral reef ecosystems is under threat because vital reef-accreting species such as coralline algae are highly susceptible to ocean acidification. Although ocean acidification is known to reduce coralline algal growth rates, its direct effects on the development of coralline algal reproductive structures (conceptacles) is largely unknown. Furthermore, the long-term, multi-generational response of coralline algae to ocean acidification is extremely understudied. Here, we investigate how mean pH, pH variability and the pH regime...

Intraspecific genetic variation matters when predicting seagrass distribution under climate change

Zi-Min Hu, Quan-Sheng Zhang, Jie Zhang, Kass Jamie, Mammola Stefano, Fresia Pablo, Draisma Stefano, Assis Jorge, Jueterbock Alexander, Yokota Masashi & Zhixin Zhang
Seagrasses play a vital role in structuring coastal marine ecosystems, but their distributional range and genetic diversity have declined rapidly over the past decades. In order to improve conservation of seagrass species, it is important to predict how climate change may impact their ranges. Such predictions are typically made with correlative species distribution models (SDMs), which can estimate a species’ potential distribution under present and future climatic scenarios given species’ presence data and climatic predictor...

Simultaneous two-photon voltage or calcium imaging and multi-channel LFP recordings in barrel cortex of awake and anesthetized mice

Claudia Cecchetto, Stefano Vassanelli & Bernd Kuhn
Neuronal population activity, both spontaneous and sensory-evoked, generates propagating waves in cortex. However, high spatiotemporal-resolution mapping of these waves is difficult as calcium imaging, the work horse of current imaging, does not reveal subthreshold activity. Here, we present a platform combining voltage or calcium two-photon imaging with multi-channel local field potential (LFP) recordings in different layers of the barrel cortex from anesthetized and awake head-restrained mice. A chronic cranial window with access port allows injecting...

Genome-wide SNP genotyping reveals hidden population structure of an acroporid species at a subtropical coral island: Implications for coral restoration

Yuna Zayasu, Takeshi Takeuchi, Tomofumi Nagata, Megumi Kanai, Manabu Fujie, Mayumi Kawamitsu, Chuya Shinzato, Noriyuki Satoh, Wakana Chinen, Chuya Shinzato & Noriyuki Satoh
It is essential to consider genetic composition for both conventional coral restoration management and for expanding new interventions to counter the significant global decline in living corals. Population genetic structure at fine spatial scale should be carefully evaluated before implementing strategies to achieve self-sustaining ecosystems via coral restoration. Here, we investigated the population genetic structure of two acroporid species at Kume Island, Okinawa, Japan. 140 colonies of Acropora digitifera from 7 study sites, and 81...

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...

The impact of estimator choice: Disagreement in clustering solutions across K estimators for Bayesian analysis of population genetic structure across a wide range of empirical datasets

Kathryn Stankiewicz, Kate Vasquez Kuntz, Jean-Baptiste Ledoux, Didier Aurelle, Joaquim Garrabou, Yuichi Nakajima, Mikael Dahl, Yuna Zayasu, Sabri Jaziri, Federica Costantini & Iliana Baums
The software program STRUCTURE is one of the most cited tools for determining population structure. To infer the optimal number of clusters from STRUCTURE output, the ΔK method is often applied. However, a recent study relying on simulated microsatellite data suggested that this method has a downward bias in its estimation of K and is sensitive to uneven sampling. If this finding holds for empirical datasets, conclusions about the scale of gene flow may have...

Electrocharging face masks with corona discharge treatment

Mahesh Bandi, Noriko Ishizu, Hyung-Been Kang, M. M. Bandi, N. Ishizu & H.-B. Kang
We detail an experimental method to electrocharge N95 facepiece respirators and face masks (FMs) made from a variety of fabrics (including non-woven polymer and knitted cloth) using corona discharge treatment (CDT). We present practical designs to construct a CDT system from commonly available parts and detail calibrations performed on different fabrics to study their electrocharging characteristics. After confirming the post-CDT structural integrity of fabrics, measurements showed that all non-woven polymer electret and only some knitted...

Data from: Functional innovation promotes diversification of form in the evolution of an ultrafast trap-jaw mechanism

Douglas Booher, Joshua Gibson, Cong Liu, John Longino, Brian Fisher, Milan Janda, Nitish Narula, Evropi Toulkeridou, Alexander Mikheyev, Andrew Suarez & Evan Economo
Evolutionary innovations underlie the rise of diversity and complexity—the two long-term trends in the history of life. How does natural selection redesign multiple interacting parts to achieve a new emergent function? We investigated the evolution of a biomechanical innovation, the latch-spring mechanism of trap-jaw ants, to address two outstanding evolutionary problems: how form and function change in a system during the evolution of new complex traits, and whether such innovations and the diversity they beget...

Coordination of movement via complementary interactions of leaders and followers in termite mating pairs.

Nobuaki Mizumoto, Sang-Bin Lee, Gabriele Valentini, Thomas Chouvenc & Stephen Pratt
Leadership of animal group movements depends on social feedback, hence leader’s signals and follower’s responses should be attuned to each other. However, leader and follower roles are difficult to disentangle in species with high levels of coordination. To overcome this challenge, we investigated a simple case of movement coordination: termite pairs in which a female leads a male as they search for a nest site. To tease apart leader and follower roles, we created conspecific...

Reevaluating claims of ecological speciation in Halichoeres bivittatus

Dan Warren, Ron Eytan, Alex Dornburg, Teresa Iglesias, Matt Brandley & Peter Wainwright
Allopatry has traditionally been viewed as the primary driver of speciation in marine taxa, but the geography of the marine environment and the larval dispersal capabilities of many marine organisms render this view somewhat questionable. In marine fishes, one of the earliest and most highly cited empirical examples of ecological speciation with gene flow is the slippery dick wrasse, Halichoeres bivittatus. Evidence for this cryptic or incipient speciation event was primarily in the form of...

The shellome of the crocus clam Tridacna crocea emphasizes essential components of mollusc shell biomineralization

Takeshi Takeuchi, Manabu Fujie, Ryo Koyanagi, Laurent Plasseraud, Isabelle Ziegler-Devin, Nicolas Brosse, Cédric Broussard, Noriyuki Satoh & Frédéric Marin
Molluscan shells are among the most fascinating research objects because of their diverse morphologies and textures. The formation of these delicate biomineralized structures is a matrix-mediated process. A question that arises is what are the essential components required to build these exoskeletons. In order to understand the molecular mechanisms of molluscan shell formation, it is crucial to identify organic macromolecules in different shells from diverse taxa. In the case of bivalves, however, taxon sampling in...

Data and code for analysis of effects of climate change on kangaskhan and summary of simulations from Warren et al. 2020

Dan Warren, Alex Dornburg, Katerina Zapfe & Teresa Iglesias
Species distribution models (SDMs) are frequently used to predict the effects of climate change on species of conservation concern. Biases inherent in the process of constructing SDMs and transferring them to new climate scenarios may result in undesirable conservation outcomes. We explore these issues and demonstrate new methods to estimate biases induced by the design of SDM studies. We present these methods in the context of estimating the effects of climate change on Australia’s only...

The evolution of body size in termites

Nobuaki Mizumoto & Thomas Bourguignon
Termites are social cockroaches. Because non-termite cockroaches are larger than basal termite lineages, which themselves include large termite species, it has been proposed that termites experienced a unidirectional body size reduction since they evolved eusociality. However, the validity of this hypothesis remains untested in a phylogenetic framework. Here, we reconstructed termite body size evolution using head width measurements of 1638 modern and fossil termite species. We found that the unidirectional body size reduction model was...

Dataset for: A structural signature motif enlightens the origin and diversification of nuclear receptors

Gabriel V. Markov, Brice Beinsteiner, Vincent Laudet, Dino Moras & Isabelle Marie Louise Billas
Nuclear receptors are ligand-activated transcription factors that modulate gene regulatory networks from embryonic development to adult physiology and thus represent major targets for clinical interventions in many diseases. Most nuclear receptors function either as homodimers or as heterodimers. The dimerization is crucial for gene regulation by nuclear receptors, by extending the repertoire of binding sites in the promoters or the enhancers of target genes via combinatorial interactions. Here, we focused our attention on an unusual...

Head and mandible shapes are highly integrated yet represent two distinct modules within and among worker sub-castes of the ant genus Pheidole

Alexandre Casadei Ferreira, Nicholas R. Friedman, Evan Economo, Marcio Pie & Rodrigo Feitosa
Ants use their mandibles for a wide variety of tasks related to substrate manipulation, brood transport, food processing, and colony defence. Due to constraints involved in colony upkeep, ants evolved a remarkable diversity of mandibular forms, often related to specific roles such as specialized hunting and seed milling. Considering these varied functional demands, we focused on understanding how the mandible and head shape vary within and between Pheidole sub-castes. Using x-ray microtomography and 3D geometric...

Registration Year

  • 2021
    15

Resource Types

  • Dataset
    15

Affiliations

  • Okinawa Institute of Science and Technology
    15
  • Institute of Genetics and Molecular and Cellular Biology
    1
  • University of Padua
    1
  • Victoria University of Wellington
    1
  • Japan International Research Center for Agricultural Sciences
    1
  • The Arctic University of Norway
    1
  • University of Bologna
    1
  • University of North Carolina
    1
  • University of Algarve
    1
  • Sam Ratulangi University
    1