Trajectory to local extinction of an isolated dugong population near Okinawa Island, Japan by Hajime Kayanne, Takeshi Hara, Nobuaki Arai, Hiroya Yamano, Hiroyuki Matsuda

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Expanding walls and shrinking beaches: loss of natural coastline in Okinawa Island, Japan by Giovanni Diego Masucci, James D. Reimer

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Amidst nets and typhoons: conservation implications of bat–farmer conflicts on Okinawa Island by Weerach Charerntantanakul, Shozo Shibata, Christian Ernest Vincenot

“…This study aimed to investigate wildlife-caused damage to tankan oranges Citrus tankan on Okinawa Island, Japan, and interactions between the Ryukyu flying fox Pteropus dasymallus and farmers. …”
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Shallow epifaunal sea cucumber densities and their relationship with the benthic community in the Okinawa Islands by Kohei Hamamoto, Angelo Poliseno, Taha Soliman, James Davis Reimer

“…Here, we report on the population densities of multiple LEC sea cucumber species, and their ambient benthic communities at eight sites around Okinawa Islands. Further, we discuss the correspondence between sea cucumber densities and the surrounding coral communities. …”
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A new species of Egglestonichthys (Teleostei, Gobiiformes, Gobiidae) from Okinawa Island, Japan by Kyoji Fujiwara, Toshiyuki Suzuki, Hiroyuki Motomura

“…(Teleostei: Gobiidae) is described on the basis of a single specimen (21.7 mm in standard length) collected from 250 m depth off Okinawa Island, Ryukyu Islands, Japan. The new species is characterized by the following combination of characters: anal-fin rays I, 9; pectoral-fin rays 17, lower rays not free from membrane; longitudinal scale series 25; transverse scales 8; pre-dorsal-fin scale rows 8; cheek and opercle naked; pelvic frenum absent; caudal fin lanceolate, its length 32.2% of SL; interorbital width very narrow, 1.2% of HL (much narrower than pupil diameter); no spicules or odontoid processes on outer surface of gill arches; and body whitish, upper half with broken zigzag pattern of bright yellow patches and associated scattered black melanophores in fresh specimens (melanophores retained in preserved specimens). …”
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A new species of the genus Coptotriche (Lepidoptera: Tischeriidae) from Okinawa Island, Japan by Hyeong-Kyu Kim, Sadahisa Yagi, Shigeki Kobayashi, Toshiya Hirowatari

“…A new Symplocos trumpet leafminer, Coptotriche yanbarensis Kim & Yagi sp. nov., feeding on S. stellaris and S. okinawensis (Symplocaceae) is described from Okinawa Island, Japan. The new species is distinguishable from the Japanese Symplocos feeding described species, C. symplocosella Kobayashi & Hirowatari, 2016 by the forewing coloration, the shape of genitalia, and also DNA barcodes.…”
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First evidence of asexual recruitment of Pocillopora acuta in Okinawa Island using genotypic identification by Yuichi Nakajima, Po-Shun Chuang, Nobuo Ueda, Satoshi Mitarai

“…Okinawa Island is located near the center of the Nansei Islands (∼24–31°N), at a relatively high latitude for coral reefs. …”
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Taxonomic notes on Chironomidae (Diptera) from Okinawa Island, Japan, with the description of three new species by Masaru Yamamoto, Nao Yamamoto, Masaaki Kimura

“…Three new species: Ionthosmittia cuneipenne sp. nov., Orthocladius (Euorthocladius) okinawanus sp. nov. and Parakiefferiella semiovata sp. nov., are described from Okinawa Island, Ryukyus, Japan. In addition to these species, twelve species are newly recorded from this island. …”
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Macrogenomic evidence for the origin of the black fly Simulium suzukii (Diptera: Simuliidae) on Okinawa Island, Japan. by Peter H Adler, Yao-Te Huang, Will K Reeves, Sam Kyu Kim, Yasushi Otsuka, Hiroyuki Takaoka

“…To determine the geographic origin of the black fly Simulium suzukii on Okinawa Island, Japan, macrogenomic profiles derived from its polytene chromosomes were compared with those of mainland and other insular populations of S. suzukii and of the isomorphic Simulium tani species complex. …”
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Three-dimensional transport of coral larvae and associated population connectivity in the coastal area of Okinawa Island, Japan by Zhang Tianrui, Uchiyama Yusuke, Takeyasu Kimika

“…This study quantitatively evaluates the 3D population connectivity between shallow-water corals and MPZ corals in the potential coral habitats surrounding Okinawa Island. Utilizing a triple-nested high-resolution 3D ocean circulation model, an offline, 3D Lagrangian advection-dispersion model for planktonic coral larvae was developed. …”
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Geochemistry of ferromanganese nodules in the soil of Okinawa Island, Japan: Paleoclimatic implications and discrimination scheme of the nodule origins by Keishiro Azami, Kazutaka Yasukawa, Yasuhiro Kato

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Interpretation of upper-storey canopy area in subtropical broadleaved forests in Okinawa Island using laser scanning data by Noor Janatun Naim Jemali, Masami Shiba, Azita Ahmad Zawawi

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First Japanese Records of the Flounders Pseudorhombus elevatus and P. quinquocellatus (Teleostei: Paralichthyidae) from Okinawa Island, Ryukyu Islands by Mizuki Matsunuma, Fumihito Tashiro, Hiroyuki Motomura

“…Pseudorhombus elevatus Ogilby, 1912 and P. quinquocellatus Weber and de Beaufort, 1929 (Teleostei: Paralichthyidae) are newly recorded from Japan, based on 35 and two specimens, respectively, from Okinawa Island, Ryukyu Islands. Although both species have previously been recorded from Taiwan, no Japanese records are known to date. …”

Optimal Planting Depth for Turmeric (Curcuma longaL.) Cultivation in Dark Red Soil in Okinawa Island, Southern Japan by Yoshito Ishimine, Md. Amzad Hossain, Yukio Ishimine, Seiichi Murayama

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Diversity, composition and potential roles of sedimentary microbial communities in different coastal substrates around subtropical Okinawa Island, Japan by Kohei Hamamoto, Masaru Mizuyama, Miyuki Nishijima, Ayumi Maeda, Kodai Gibu, Angelo Poliseno, Akira Iguchi, James Davis Reimer

“…In our study, we collected coastal sediments from seven sites around Okinawa Island, Japan, including three different benthic types; sandy bottoms, seagrass meadows, and hard substratum with living scleractinian corals. …”
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First record of the stink bug genus Ochrophara Stål, 1871 (Hemiptera, Heteroptera, Pentatomidae) from Japan by Jun Souma, Tadashi Ishikawa

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Quantifying connectivity between mesophotic and shallow coral larvae in Okinawa Island, Japan: a quadruple nested high-resolution modeling study by Kimika Takeyasu, Yusuke Uchiyama, Satoshi Mitarai

“…The present study aimed to quantify the short-distance connectivity of shallow and mesophotic coral larvae in reef areas on the northwest coast of Okinawa Island. To this end, a quadruple nested high-resolution synoptic ocean model at a lateral spatial grid resolution of 50 m was developed, which was capable of realizing detailed coastal currents influenced by complex nearshore topography, and coupled with an offline 3-D Lagrangian particle-tracking model. …”
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First Japanese Record of Corythoichthys intestinalis (Teleostei: Syngnathidae) from the Ryukyu Islands by Daijiro Yuki, Hiromitsu Endo, Hiroyuki Motomura

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A Comparison of Size, Shape, and Fractal Diversity Between Coral Rubble Sampled From Natural and Artificial Coastlines Around Okinawa Island, Japan by Giovanni D. Masucci, Giovanni D. Masucci, Giovanni D. Masucci, Piera Biondi, Piera Biondi, James D. Reimer, James D. Reimer

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A New Feather Mite Species of the Genus Metanalges (Acariformes: Analgidae) from the Okinawa Rail, Hypotaenidia okinawae (Gruiformes: Rallidae), in Okinawa Island, Japan by Tsukasa Waki, Sergey Mironov, Yumiko Nakaya, Takashi Nagamine, Satoshi Shimano

“…The Okinawa Rail, Hypotaenidia okinawae (Yamashina and Mano, 1981), is a flightless bird restricted to the northern part of Okinawa Island, Ryukyu Islands, Japan. A new feather mite species, Metanalges (M.) agachi sp. n. …”