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opencc-by-4.0Mar 2024View details →

Fig. 6 in Taxonomic diversity of marine planktonic 'y-larvae' (Crustacea: Facetotecta) from a coral reef hotspot locality (Japan, Okinawa), with a key to y-nauplii

Fig. 6. Last-stage nauplii of two different (morpho)species of y-larvae (Facetotecta) from Sesoko Island (Okinawa, Japan). A–F. Hansenocaris demodex Olesen et al., 2022 (all paratypes). G–L. Type C ('Bumblebee'). Shown either in life (A–B, G–H) or as slide-mounted exuviae (C–F, I –L). Abbreviations: A1 = first antenna; A2 = second antenna; Md = mandible.

opencc-by-4.0Nov 2016View details →

Fig. 1 in Four Alien Monogeneans, Including Trinigyrus peregrinus n. sp., Parasitic on the Invasive Armored Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) from Okinawa-jima Island, Okinawa Prefecture, Japan

Fig. 1. Measurement axes of hard parts of Unilatus and Trinigyrus. Abbreviations: aol, anchor outer length; apl, accessory piece length; asl, accessory structure length; asw, accessory structure width; atl, anchor total length; bmw, bar median width; btl, bar total length; btw, bar total width; bw, base width; ccl, copulatory organ curve length; cd, copulatory organ diameter; cl, copulatory organ length; mhl, marginal hook length; pl, point length; scl, sclerotized cup length; vl, vagina length.

opencc-by-4.0Nov 2015View details →

Fig. 3 in New Records of the Tetraclitid Barnacle Tesseropora alba (Cirripedia: Thoracica: Tetraclitoidea) in the Pacific Waters of Taiwan and Okinawa

Fig. 3. Trophi and cirri of Tesseropora alba Ren and Liu, 1979 (Kanna River Estuary, Ginoza, Okinawa). A, palp; B, labrum; C, mandible; D, maxilla I; E, maxilla II; F, cirrus I; G, cirrus II; H, cirrus III; I, cirrus IV; J, cirrus V; K, cirrus VI.

opencc-by-4.0Nov 2016View details →

Fig. 3 in Four Alien Monogeneans, Including Trinigyrus peregrinus n. sp., Parasitic on the Invasive Armored Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) from Okinawa-jima Island, Okinawa Prefecture, Japan

Fig. 3. Unilatus brittani Mizelle, Kritsky, and Crane, 1968. NSMT-Pl 6193. A, anterior anchors; B, posterior anchors; C, anterior bar; D, posterior bar; E, marginal hook of pair I; F, marginal hook of pair II; G, marginal hook of pair III; H, marginal hook of pair IV; I, marginal hook of pair V; J, marginal hook of pair VI; K, marginal hook of pair VII; L, male copulatory organ; M, vagina. Scale bars: 10 µm.

opencc-by-4.0Nov 2016View details →

Fig. 4. Trinigyrus peregrinus n in Four Alien Monogeneans, Including Trinigyrus peregrinus n. sp., Parasitic on the Invasive Armored Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) from Okinawa-jima Island, Okinawa Prefecture, Japan

Fig. 4. Trinigyrus peregrinus n. sp. Holotype (NSMT-Pl 6195) for B–E, paratypes for A (NSMT-Pl 6198, 6200) and for F (NMST-Pl 6202). A, whole mount (ventral view, composite); B, anchors; C, bar; D, marginal hook; E, male copulatory organ; F, egg. Scale bars: A and F, 200 µm; B–E, 20 µm. Abbreviations: ap, accessory piece; cg, cephalic glands; in, intestinal caecum; mco, male copulatory organ; mh, marginal hook; o, oötype; od, oviduct; ov, ovary; ph, pharynx; pr, prostatic reservoir; sr, seminal reservoir; sv, seminal vesicle; t, testis; va, vagina; vd, vas deferens; vl, vitellaria; vp, vaginal pore.

Fig. 1 in First Record of a Sicydiine Goby, Stiphodon multisquamus (Actinopterygii: Gobioidei: Gobiidae), from Okinawa Island, Japan

Fig. 1. Map showing the locations of Okinawa Island and Hain- an and Guangdong Provinces, China, where Stiphodon multisquamus has been reported previously.

Fig. 3 in First Record of a Sicydiine Goby, Stiphodon multisquamus (Actinopterygii: Gobioidei: Gobiidae), from Okinawa Island, Japan

Fig. 3. Diagrammatic illustration of head showing arrangement of cephalic sensory pores (black dots) and cutaneous sensory papillae (A′–O′) in Stiphodon multisquamus (40.6 mm SL, NSMT- P 114246) from Okinawa Island. A, dorsal view; B, lateral view; C, ventral view. AN, anterior nostril; PN, posterior nostril.

Fig. 2 in First Japanese Record of Heteropriapulus heterotylus (Monogenea: Dactylogyridae), from the Alien Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) in Okinawa

Fig. 2. Heteropriapulus heterotylus (Jogunoori, Kritsky and Venkatanarasaiah, 2004). A, Whole mount (ventral view); B, dorsal anchors; C, ventral anchors; D, dorsal bar; E, ventral bar; F, hook; G, male copulatory organ; H, vagina. Scale bars: A, 50 µm; B–G, 10 µm. Abbreviations: ap, accessory piece; cl, cephalic lob; co, copulatory organ; es, eye-spot (black, ventral; gray, dorsal); ho, hook; ic, intestinal caeca; ov, ovary; ph, pharynx; pr, prostatic reservoir; sv, seminal vesicle; te, testis; vf, vitelline follicles; vt, vagina.

Fig. 1 in First Japanese Record of Heteropriapulus heterotylus (Monogenea: Dactylogyridae), from the Alien Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) in Okinawa

Fig. 1. Measurements of hard parts of Heteropriapulus heterotylus (Jogunoori, Kritsky and Venkatanarasaiah, 2004). A, Dorsal anchor; B, ventral anchor; C, bar; D, hook; E, male copulatory organ. Abbreviations: al, accessory piece length; apl, anchor patch length; atl, anchor total length; bmw, bar median width; btl, bar total length; btw, bar total width; cl, copulatory organ length; hl, hook length; irl, inner root length; pl, point length; sl, shaft length.

opencc-by-4.0Mar 2021View details →

Fig. 2 in First Japanese records of Anguilla luzonensis (Osteichthyes: Anguilliformes: Anguillidae) glass eels from Okinawa-jima Island, Ryukyu Archipelago, Japan

Fig. 2. Caudal fin and caudal pigmentation pattern of Anguilla luzonensis glass eel (fresh specimens), KYUM-PI-05434.

opencc-by-4.0Mar 2021View details →

Fig. 3 in First Japanese records of Anguilla luzonensis (Osteichthyes: Anguilliformes: Anguillidae) glass eels from Okinawa-jima Island, Ryukyu Archipelago, Japan

Fig. 3. Neighbor-joining phylogenetic tree of species of Anguilla in the Indo-Pacific waters based on partial 16S rRNA sequences. The numbers beside internal branches indicate bootstrap probabilities for 1,000 replicates.

opencc-by-4.0Sep 2021View details →

Fig. 2 in First Japanese Specimen-based Records of Sardinella gibbosa (Teleostei: Clupeiformes: Clupeidae) from Okinawa Island

Fig. 2. Stained scale removed from right side of midbody (just below dorsal fin) of Sardinella gibbosa from Nakagusuku Bay, Okinawa Island, Ryukyu Islands, Japan (URM-P 44692, 132.6 mm SL; left-right inverted).

opencc-by-4.0Sep 2021View details →

Fig. 1 in First Japanese Specimen-based Records of Sardinella gibbosa (Teleostei: Clupeiformes: Clupeidae) from Okinawa Island

Fig. 1. Preserved specimens of Sardinella gibbosa from Nakagusuku Bay, Okinawa Island, Ryukyu Islands, Japan. A, URM-P 6388, 142.4 mm SL; B, URM-P 8674, 137.1 mm SL; C, URM-P 44676, 124.0 mm SL; D, URM-P 44677, 118.4 mm SL; E, URM-P 44678, 117.0 mm SL; F, URM-P 44692, 132.6 mm SL; G, URM-P 44697, 111.2 mm SL; H, URM-P 44698, 130.0 mm SL; lateral (I) and dorsal views (J, white arrow indicates black spot on dorsal-fin origin) of URM-P 44683, 127.3 mm SL.

opencc-by-4.0Jun 2022View details →

Tidally modulated temperature observed atop a drillsite at the Noho hydrothermal site, mid-Okinawa Trough

These are the dataset used in a manuscript submitted to J. Geophys. Res. (AGU), entitled "Tidally modulated temperature observed atop a drillsite at the Noho hydrothermal site, mid-Okinawa Trough" by Kinoshita, M, K. Kitada and T. Nozaki. It is in revision as of June 10 2022.  The authors of this dataset include those who organized or participated the expeditions and contributed to obtain the data shown here. Abstract We observed temperature variations over 10 months within a Kuroko ore (hydrothermal sulfide) cultivation apparatus installed atop a 50-m-deep borehole drilled in the Noho hydrothermal system in the mid-Okinawa Trough, southwestern Japan, for  monitoring of hydrothermal fluids and in situ mineral precipitation experiments. Temperature and pressure in the apparatus fluctuated with the tidal period immediately after its installation. Initially, the average temperature was 75–76 °C and the amplitude of the semi-diurnal tidal temperature modulation was ~0.3 °C. Four months later, the amplitude of tidal temperature modulation had gradually increased to 4 °C in synchrony with an average temperature decrease to ~40 °C. Numerical modeling showed that both the increase in tidal amplitude and the decrease in average temperature were attributable to a gradual decrease in inflow to the apparatus, which promoted conductive cooling through the pipe wall. The reduced inflow was probably caused by clogging inside the apparatus, but we cannot rule out a natural cause, because the drilling would have significantly decreased the volume of hot fluid in the reservoir. The temperature fluctuation phase lagged the pressure fluctuation phase by ~150°. Assuming that the fluctuations originated from inflow from the reservoir, we conducted 2-D numerical hydrothermal modeling for a poroelastic medium. To generate the 150° phase lag, the permeability in the reservoir needed to exceed that in the ambient formation by ~3 orders of magnitude. The tidal variation phase can be a useful tool for assessing the hydrological state and response of a hydrothermal system.  Key Points <ul> <li> Temperature and pressure atop a borehole in the mid-Okinawa Trough hydrothermal system fluctuated with the tidal period during 10 months.  </li> <li> The temperature tidal fluctuation phase lagged pressure by ~150° likely because of the poroelastic response of higher permeability sediment.  </li> </ul> <ul> <li> A gradual temperature decrease and tidal amplitude increase were caused by reduced inflows that promoted conductive cooling.  </li> </ul> Explanation of the dataset *Fig.3_rawdata_C9017B_Long.txt: *Fig.3_rawdata_C9017B_Short: Temperature and pressure data recorded by the probes in the cell (Fig.3_rawdata_C9017B_Long) and the bottom inflow pipe (Fig.3_rawdata_C9017B_Short) during the whole observation period. All dates and times are Japanese Standard Time (JST: UTC+9). *Fig.5_Fig.8_Tidal-height_naotestj_C9017B_JST.txt:  Theoretical tidal height at the borehole C9017B, calculated using NAOTIDE program (Matsumoto, K., Takanezawa, T., & Ooe, M. (2000), Ocean tide models developed by assimilating TOPEX/POSEIDON altimeter data into hydrodynamical model: A global model and a regional model around Japan, J. Oceanography, 56, 567-581. https://doi.org/10.1023/A:1011157212596). *Fig.7_Flow-rate.txt: Flow velocity data and the sinusoidal fit during the period immediately after deployment of the apparatus, measured within the inflow pipe of the apparatus. Terms of use: These data are provided "as is", without any warranties of any kind. The data are provided under the Creative Commons Attribution 4.0 International license.

Fig. 2 in First Japanese Records of Sardinella albella (Teleostei: Clupeiformes: Clupeidae) from Okinawa Island, with a Key to Japanese Species of Sardinella

Fig. 2. Stained scale removed from left side of midbody (just above pectoral fin) of Sardinella albella from Nakagusuku Bay, Okinawa Island, Ryukyu Archipelago, Japan (ZUMT 17185, 71.9 mm SL).

Fig. 1 in First Japanese Records of Sardinella albella (Teleostei: Clupeiformes: Clupeidae) from Okinawa Island, with a Key to Japanese Species of Sardinella

Fig. 1. Formalin-preserved preserved specimens of Sardinella albella from Nakagusuku Bay, Okinawa Island, Ryukyu Archipelago, Japan [A: ZUMT 17185, 71.9 mm SL; B: ZUMT 17186, 75.6 mm SL; C: ZUMT 17187, 69.3 mm SL (a: lateral, b: dorsal, c: ventral views)].

Fig. 3 in New Records of Gemmaecaputia corrugata (Monogenea: Chauhaneidae) from Sphyraena forsteri (Sphyraenidae) off Yomitan Town, Okinawa-jima Island, Southern Japan

Fig. 3. Bayesian inference (BI) trees for the Gastrocotylinea based on partial 28S rDNA (654bp) and cox1 (226bp) data using Diclidophoridae species as the outgroup. The corresponding GenBank accession numbers are shown. The tree includes results for BI and Maximum Likelihood with PP/BS branch support.

Fig. 1. Gemmaecaputia corrugata Tripathi, 1957 from Sphyraena forsteri Cuvier, 1829 in New Records of Gemmaecaputia corrugata (Monogenea: Chauhaneidae) from Sphyraena forsteri (Sphyraenidae) off Yomitan Town, Okinawa-jima Island, Southern Japan

Fig. 1. Gemmaecaputia corrugata Tripathi, 1957 from Sphyraena forsteri Cuvier, 1829. Whole body (ventral view, MPM 21744e). Scale bar: 500 µm. Abbreviations for morphological characters: cgp, common genital pore; clI–IV, first–fourth clamp on left side; crI– IV, first–fourth clamp on right side; es, esophagus; gic, genito-intestinal canal; h, haptor; ic, intestinal ceca; o, ovary; os, oral sucker; p, penis; ped, pedunculate; ph, pharynx; sgc, spheroidal gland cell; spl, subtriangular proximal lobe; t, testes; tvd, transverse vitelline ducts; u, uterus; vas, vas deferens; vd, vaginal duct; vid, vitelline duct; vit, vitellarium.

Fig. 2. Gemmaecaputia corrugata Tripathi, 1957 from Sphyraena forsteri Cuvier, 1829 in New Records of Gemmaecaputia corrugata (Monogenea: Chauhaneidae) from Sphyraena forsteri (Sphyraenidae) off Yomitan Town, Okinawa-jima Island, Southern Japan

Fig. 2. Gemmaecaputia corrugata Tripathi, 1957 from Sphyraena forsteri Cuvier, 1829 (ventral view, MPM 21744e) for A–C, (ventral view, MPM 21744d) for D, E. A, Reproductive organs; B, common genital pore; C, genital ducts of middle body; D, first clamp of right side; E, second clamp of left side. Scale bars: A, C, 100 µm; B, D, E, 50 µm. Abbreviations for morphological characters: acs, accessory sclerite; als, antero-lateral sclerite; atm, atrium musculinus; cgp, common genital pore; dms, dorsal mid-sclerite; gic, genito-intestinal canal; o, ovary; oö, oötype; ovd, ovo-vitelline duct; ovi, oviduct; p, penis; pls, postero-lateral sclerite; spl, subtriangular proximal lobe; ss, small sclerite; t, testes; u, uterus; vas, vas deferens; vd, vaginal duct; ve, vasa efferentia; vid, vitelline duct; vms, ventral midsclerite; vp, vaginal pore.