Masashi Yoshimura

Masashi Yoshimura
Okinawa Institute of Science and Technology | OIST · Enviromental Science Section

Ph. D.

About

40
Publications
7,100
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
368
Citations
Additional affiliations
April 2019 - present
Okinawa Institute of Science and Technology
Position
  • Section leader
April 2014 - March 2019
Okinawa Institute of Science and Technology
Position
  • Researcher
November 2008 - March 2014
California Academy of Sciences
Position
  • PostDoc Position
Description
  • To study male-based systematics of Malagasy ants.

Publications

Publications (40)
Article
Full-text available
The genus Mystrium is revised for the Malagasy region. Six species, Mystrium barrybressleri sp. n., Mystrium labyrinth sp. n., Mystrium eques sp. n., Mystrium mirror sp. n., Mystrium shadow sp. n., and Mystrium janovitzi sp. n. are described as new. Two existing names, Mystrium fallax Forel and Mystrium stadelmanni Forel, are synonymized with Mystr...
Article
Keys to the subfamilies and genera of Japanese ants based on the males are presented with scanning electron micrographs and illustrations. The keys cover all 7 subfamilies and 46 out of 56 genera distributed in Japan. Characters of mandibles, antennal sockets, flagellum, pedicel, occipital carina, notauli, scuto-scutellar suture, metapleural gland...
Article
Full-text available
The species-rank taxonomy of the genus Adetomyrma Ward, 1994 is revised. Nine species are distinguished with eight described as new: A. aureocuprea sp. nov., A. bressleri sp. nov., A. caputleae sp. nov., A. cassis sp. nov., A. caudapinniger sp. nov., A. cilium sp. nov., A. clarivida sp. nov., A. goblin sp. nov. Worker-male associations are identifi...
Article
Full-text available
Keys to the males of the Dolichoderinae ant genera known from the Southwest Indian Ocean islands (Comoros, Madagas-car, Mauritius, Mayotte, Reunion, and Seychelles) are provided. Diagnoses, discussion, illustrations, and a character ma-trix are provided for all five extant genera from the region: Aptinoma, Ochetellus, Ravavy, Tapinoma, and Technomy...
Article
Full-text available
In a male-based revision of ants of the subfamily Amblyoponinae from the Southwest Indian Ocean islands (SWIO: Comoros, Madagascar, Mauritius, Mayotte, Reunion, and Seychelles), we explore and reconsider male morphological characters that distinguish genera within the group. Our investigation redefines Amblyopone Erichson sensu Brown (1960), here r...
Article
Islands make up a large proportion of Earth’s biodiversity, yet are also some of the most sensitive systems to environmental perturbation. Biogeographic theory predicts that geologic age, area, and isolation typically drive islands’ diversity patterns, and thus potentially impact non‐native spread and community homogenization across island systems....
Article
The Argentine ant Linepithema humile is reported in Okinawa Prefecture for the first time. Only one individual of the species was collected through a fire ant survey at the Naha Port International Container Yard. At the time of this reporting, colonization of this species has not been found in Okinawa. The low similarity of ant community in the con...
Article
Full-text available
With the continued adoption of passive acoustic monitoring as a tool for rapid and high-resolution ecosystem monitoring, ecologists are increasingly making use of a suite of acoustic indices to summarise the sonic environment. Though these indices are often reported to well represent some aspect of the biology of an ecosystem, the degree to which t...
Article
Full-text available
Pipistrelles of the genus Hypsugo are among the rarest bats in Japan, known from a handful of records. In June 2018, a sequence of echolocation calls apparently by a bat of this genus was recorded by an automatic ultrasound recorder on the island of Okinawa. The calls closely resemble H. pulveratus, a Chinese species never before recorded in Japan,...
Article
Sea container has been identified as a major pathway for the unintended entry and spread of alien ant species. In Japan, red imported fire ants, Solenopsis invicta Buren (Hymenoptera: Formicidae), which are among the most harmful alien ants, were first detected in a shipping container from China in May 2017, and the invasion into Japan via the trad...
Article
Full-text available
Ecologists have many ways to measure and monitor ecosystems, each of which can reveal details about the processes unfolding therein. Acoustic recording combined with machine learning methods for species detection can provide remote, automated monitoring of species richness and relative abundance. Such recordings also open a window into how species...
Article
Full-text available
Background: Deworming wild foxes by baiting with the anthelmintic praziquantel is being established as a preventive technique against environmental contamination with Echinococcus multilocularis eggs. Improvement of the cost-benefit performance of baiting treatment is required urgently to raise and maintain the efficacy of deworming. We establishe...
Data
A data sheet for all specimens of Mystrium examined
Data
We developed seven polymorphic microsatellite loci for Myrmica kotokui from RAPD (rapid analysis of polymorphic DNA) fragments. These loci showed two to six alleles with expected and observed heterozygosity of 0.13–0.73 and 0.14–0.78, respectively. These loci are transferable to the congeneric species as Myrmica rubra, Myrmica luteola and Myrmica t...
Article
A new synonym in the ant genus Ponera, and a new species-record from Japan are reported following faunal surveys of Yakushima Island, Kagoshima Prefecture. Morphological comparison of type specimens with material collected on Yakushima and mainland Kyushu and Honshu reveals that Ponera yakushimensis Tanaka is a junior synonym of Ponera scabra Wheel...
Article
Full-text available
Keys to the males of the Dolichoderinae ant genera known from the Southwest Indian Ocean islands (Comoros, Madagascar, Mauritius, Mayotte, Reunion, and Seychelles) are provided. Diagnoses, discussion, illustrations, and a character matrix are provided for all five extant genera from the region: Aptinoma, Ochetellus, Ravavy, Tapinoma, and Technomyrm...
Article
Full-text available
Male-based keys to ant subfamilies and to the genera of Ponerinae in the Malagasy region (Madagascar, Mauritius, Reunion, Comores, and Seychelles) are presented. Seven subfamilies known from the Malagasy region in addition to an undetermined taxon are included in the subfamily key. All seven of the ponerine genera recorded in the region—Anoche-tus,...
Article
Male-based keys to ant subfamilies and to the genera of Ponerinae in the Malagasy region (Madagascar, Mauritius, Reunion, Comores, and Seychelles) are presented. Seven subfamilies known from the Malagasy region in addition to an undetermined taxon are included in the subfamily key. All seven of the ponerine genera recorded in the region—Anochetus,...
Article
Full-text available
Strumigenys lewisi and two undetermined species, S. sp. 4 and S. sp. 9 from Japan that closely resemble S. lewisi, were examined to clarify the taxonomic status of them. Measurements of the queens were analyzed. Our analysis indicated that S. sp. 9 is an intraspecific variation of S. lewisi, and that S. sp. 4 should be regarded as a new species, S....
Article
Full-text available
Species of the ant genus Odontomachus in Japan are revised. Type comparison and detailed morphological analysis show that O. kuroiwae (Ma-tsumura, 1912) is an independent species from O. monticola Emery, 1892 and that the former species is distributed in Okinawa Island and Okinoerabu Island in the Ryukyu Islands. Lectotypes of both species are desi...
Article
Full-text available
Ten species of the proceratiine ant genus Probolomyrmex are recognized in the Oriental Region: bidens Brown, dammermani Wheeler, itoi sp. nov., longinodus Terayama et Ogata, longiscapus Xu et Zeng, maryatiae sp. nov., okinawensis Terayama et Ogata, procne Brown, vieti sp. nov. and watanabei Tanaka. The ten species and two Australian species can be...
Article
Full-text available
We developed seven polymorphic microsatellite loci for Myrmica kotokui from RAPD (rapid analysis of polymorphic DNA) fragments. These loci showed two to six alleles with expected and observed heterozygosity of 0.13–0.73 and 0.14–0.78, respectively. These loci are transferable to the congeneric species as Myrmica rubra, Myrmica luteola and Myrmica t...
Article
Full-text available
A dacetine ant, Strumigenys godeffroyi, is recorded from Japan for the first time. Distinctive characters from other Japanese Strumigenys species are given, and illustrated by scanning electric microscope photographs. This record gives its new northern limit on distribution.

Network

Cited By

Projects

Project (1)
Project
We are currently operating a landscape-scale sensor network to monitor the diversity, behaviour, and phenology of the Ryūkyū fauna. We collect thousands of hours of acoustic recordings each week, and curate them using machine learning approaches for automated species detection and soundscape analysis. Our aims are: 1) to understand acoustic niche ecology across taxa, 2) to describe the impact of human disturbance on species distributions and behaviour, and 3) to curate a soundscape archive for collaborative research in ecology and evolution.