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104 results for “Magelona”
FIGURE 19. A in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 19. A comparative figure of Japanese magelonids found in the current surveys (Magelona agoensis not included).
FIGURE 10 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 10. Magelona alba sp. nov. (NMW.Z.2022.001.0012). A, anterior, dorsal view showing Methyl Green staining pattern; B, prostomium, dorsal view; C–L, left-hand parapodia of chaetigers 1–9, 11 respectively, anterior views; M, unilimbate chaeta from chaetiger 6; N, unilimbate chaeta from chaetiger 9, with marginally pennoned tip; O, tridentate abdominal hooded hook from chaetiger 11, oblique lateral view. Pr = prostomium, PH = prostomial horns, Pp = palp, Noto = notopodia, Neuro = neuropodia, SDL = superior dorsal lobe, TP = triangular processes, numbers indicate chaetiger.
FIGURE 4 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 4. Tridentate abdominal hooded hooks of Magelona alba sp. nov. (A–B), Magelona cf. cornuta (C–E) and Magelona armatis sp. nov. (F–G). A–C, F & G lateral views; D, frontal view; E, posterolateral view.
FIGURE 7 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 7. Magelona japonica (NMW.Z.2022.001.0001, D–G, stained with Methyl Green). A, anterior region (prostomium and chaetigers 1–13), dorsal view, showing faded pigment band; B, anterior region (prostomium and chaetigers 1–10), taken shortly after sampling (by NJ), dorsal view, pigment band clear; C, anterior region (prostomium and chaetigers 1–12), ventral view; D, prostomium and chaetigers 1–4, dorsal view; E, anterior region, dorsal view; F, prostomium and chaetigers 1–10, ventrolateral view; G, prostomium, burrowing organ and chaetigers 1–3, ventral view. BO = burrowing organ, Pp = palp, Pr = prostomium, PB = pigment band, numbers indicate chaetiger.
FIGURE 1 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 1. Map highlighting the sampling locations around Japan where all observed material was collected.
FIGURE 6 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 6. Magelona japonica (NMW.Z.2022.001.0001). A, anterior region (prostomium and chaetigers 1–12), dorsal view, showing pigment band between chaetigers 5–9 and Methyl Green staining pattern; B, prostomium, dorsal view; C–L, left-hand parapodia of chaetigers 1–9, 12 respectively, anterior views; M, thoracic capillary chaeta; N, tridentate abdominal hooded hook from chaetiger 15, lateral view. PH = prostomial horns, Pp = palp, Noto = notopodia, Neuro = neuropodia, TP = triangular processes, numbers indicate chaetiger.
FIGURE 3 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 3. Magelona cf. cornuta (NMW.Z.2022.001.0013, B, D–G, stained with Methyl Green). A–B, prostomium and first few chaetigers, dorsal view (showing palps and everted burrowing organ); C, anterior, dorsal view (prostomium obscured, burrowing organ clearly visible); D, anterior, lateral view; E, anterior ten chaetigers, burrowing organ and palps, ventral view; F, anterior six chaetigers, ventrolateral view, G, anterior abdominal chaetigers, dorsolateral view. BO = burrowing organ, Pp = palp, PH = prostomial horns, VS = ventral swellings, numbers indicate chaetiger.
FIGURE 13 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 13. Magelona armatis sp. nov. (NMW.Z.2022.001.0011, A, D–G, stained with Methyl Green). A, prostomium and first five chaetigers, dorsolateral view; B, prostomium and first two chaetigers, dorsal view; C, anterior 20 chaetigers, dorsolateral view, retained stain present between chaetigers 4–7; D, anterior, dorsolateral view; E, anterior thirteen chaetigers, ventrolateral view, showing burrowing organ; F, anterior, ventral view showing ventral swellings; G, thoracic-abdominal junction, dorsal view; H, abdominal chaetigers, dorsolateral view. Ab = abdomen, BO = burrowing organ, Pr = prostomium, VS = ventral swellings, Th = thorax, numbers indicate chaetiger.
FIGURE 18 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 18. SEM and images of Magelona boninensis sp. nov. (NMW.Z.2022.001.0008a, Paratypes, A–I; NMW. Z.2022.001.0007, Paratypes, J–O). A–I, parapodia of chaetigers 1–9 respectively (A, B, H, I, left-hand side of body; C–G, righthand side of body). J, prostomium, dorsal view; K, bilimbate capillary chaetae from chaetiger 9; L, tridentate hooded hooks from chaetiger 11 in two groups vis-à-vis, postchaetal expansion visible behind chaetae, anterior view; M, tridentate hooded hook from chaetiger 11, frontal view; N and O, acicular chaetae from chaetiger 11, anterior view. Ac = acicular chaetae, Neuro = neuropodia; Noto = notopodia, PH = prostomial horns, SDL = superior dorsal lobe, numbers indicate chaetiger.
FIGURE 12 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 12. Magelona armatis sp. nov. (NMW.Z.2022.001.0011). A, anterior, dorsal view showing Methyl Green staining pattern; B, prostomium, dorsal view (N.B. lateral edges folded under and distal tip directed upwards as seen in A); C–K, lefthand parapodia from chaetigers 1–9 respectively (anterior views, arrowed figure shows the ventral view of the neuropodial lamellae of chaetigers 2–8 respectively, that of chaetiger 9 anteroventral; L, right-hand parapodium of chaetiger 10, anterior view; M, tridentate abdominal hooded hook from chaetiger 24, lateral view. Pr = prostomium, BO = burrowing organ, Noto = notopodia, Neuro = neuropodia, SDL = superior dorsal lobe, numbers indicate chaetiger.
FIGURE 17 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 17. SEM images of Magelona boninensis sp. nov. (NMW.Z.2022.001.0008a, Paratypes, A & D; NMW. Z.2022.001.0008b, Paratype, G; NMW.Z.2022.001.0009a, Paratypes, B & C; NMW.Z.2022.001.0009b, Paratypes, E & H; NMW.Z.2022.001.0009c, Paratype, F). A, anterior region (prostomium, palps, and chaetigers 1–5), dorsal view; B, burrowing organ and non-papillated palp region, ventrolateral view; C, proximal and mid-palp region; D, prostomium, dorsal view; E, abdominal lamellae (showing triangular processes, postchaetal expansion, lateral organ, and hooded hooks), posterior view; F, medially split posteriorly open pouch, lateral view; G, tridentate hooks, lateral view (hoods broken by sonication, for clarity); H, abdominal parapodia, ventrolateral view. BO = burrowing organ, LO = lateral organ, PE= postchaetal expansion, PH = prostomial horns, Pp= palp, TP = triangular processes.
FIGURE 8 in Four new species of Magelona (Annelida: Magelonidae) from Easter Island, Guam and Hawaii
FIGURE 8. Magelona anuheone sp. nov. A, anterior end and thoracic region, dorsal view of holotype; B, anterior region, ventral view of holotype; C, thoracic simple bilimbate capillaries; D, tridentate abdominal hooded hooks, lateral and frontal views respectively; E, parapodium of chaetiger 3, anterior view; F, parapodium of chaetiger 7, anterior view; G, parapodium of chaetiger 8, anterior view; H, parapodium of chaetiger 9, anterior view; I, parapodium of chaetiger 10, anterior view; J, parapodium of chaetiger 12, anterior view; K, posterior end and pygidium with anal cirri. Abbreviations: ch, chaetiger; lp, lateral pouch; pa, palp; ph, prostomial horn; pr, prostomium; bo, burrowing organ.
FIGURE 7. A–C, M in Four new species of Magelona (Annelida: Magelonidae) from Easter Island, Guam and Hawaii
FIGURE 7. A–C, M. cf. symmetrica, A, prostomium stained with shirlastain A; B and C, MGSP, dorsal and ventral views, respectively, with arrows indicating distinctive staining regions of thorax and abdomen; D–F, M. anuheone sp. nov., D, prostomium of holotype stained with shirlastain A; E and F, MGSP of holotype, dorsal and ventral views, respectively, with arrows indicating distinctive staining regions of thorax and abdomen.
FIGURE 3 in Four new species of Magelona (Annelida: Magelonidae) from Easter Island, Guam and Hawaii
FIGURE 3. Magelona cinthyae sp. nov. A, anterior end and thoracic region, dorsal view; B, anterior end showing prostomium and chaetigers 1–2, dorsal view; C, simple bilimbate capillaries of chaetiger 9; D, tridentate abdominal hooks, lateral and frontal views; E, parapodium of chaetiger 1, anterior view; F, parapodium of chaetiger 4, anterior view; G, parapodium of chaetiger 8, anterior view; H, parapodium of chaetiger 9, anterior view; I, parapodium of chaetiger 25, anterior view; J, posterior end and pygidium. Abbreviations: ch, chaetiger; es, eyespots; pa, palp; ph, prostomial horn; pr, prostomium.
FIGURE 6 in Four new species of Magelona (Annelida: Magelonidae) from Easter Island, Guam and Hawaii
FIGURE 6. Magelona cf. symmetrica. A, anterior end and thoracic region, dorsal view; B, anterior end and thoracic region, lateral view; C, prostomium and achaetous segment, dorsal view; D, tridentate hooded hooks, frontal and lateral views. Abbreviations: ch, chaetiger; pa, palp; pr, prostomium.
FIGURE 1 in Four new species of Magelona (Annelida: Magelonidae) from Easter Island, Guam and Hawaii
FIGURE 1. Magelona alexandrae sp. nov. A, anterior end and thoracic region, dorsal view, holotype; B, anterior end showing prostomium and anterior part of chaetiger 1, dorsal view, holotype; C, thoracic simple bilimbate capillaries; D, parapodium of chaetiger 1, anterior view; E, parapodium of chaetiger 5, anterior view; F, parapodium of chaetiger 8, anterior view; G, parapodium of chaetiger 9, anterior view; H, parapodium of chaetiger 12, anterior view; I, tridentate hooded hooks, lateral views; J–M, neuropodia of chaetigers 6–9, respectively, dorsal views; N, posterior end and pygidium, dorsal view;. Abbreviations: ch, chaetiger; pa, palp; ph, prostomial horn; pr, prostomium.
FIGURE 2. A-B in Four new species of Magelona (Annelida: Magelonidae) from Easter Island, Guam and Hawaii
FIGURE 2. A-B, Holotype of Magelona alexandrae sp. nov. A; prostomium stained with Shirlastain A, dorsal view, B, Methyl Green Staining Pattern (MGSP) dorsolateral view, arrows indicate distinctive staining regions of thorax and abdomen; C-E, Paratype of M. cinthyae sp. nov., D, prostomium stained with Shirlastain A; D and E, MGSP, dorsal and ventral views, respectively with arrows indicating distinctive staining regions of thorax and abdomen; F-H, Holotype of M. paulolanai sp. nov., A, prostomium stained with Shirlastain A; G and H, MGSP, dorsal and ventral views, respectively, with arrows indicating distinctive staining regions of thorax and abdomen.
FIGURE 5 in Four new species of Magelona (Annelida: Magelonidae) from Easter Island, Guam and Hawaii
FIGURE 5. Magelona paulolanai sp. nov. A, anterior end and thoracic region, dorsal view, holotype; B, basal region of palp, lateral view; C, medial region of palp, lateral view; D, distal region of palp, lateral view; E, thoracic simple bilimbate capillaries; F, anterior end showing prostomium and anterior region of chaetiger 1 of holotype, dorsal view; G, tridentate notopodial abdominal hooks, frontal and lateral views; H, parapodium of chaetiger 1, anterior view; I, parapodium of chaetiger 4, anterior view; J, parapodium of chaetiger 8, anterior view; K, parapodium of chaetiger 9, anterior view; L, parapodium of chaetiger 30, anterior view; M, posterior end and pygidium. Abbreviations: ch, chaetiger; pa, palp; ph, prostomial horn; pr, prostomium.
FIGURE 4 in Four new species of Magelona (Annelida: Magelonidae) from Easter Island, Guam and Hawaii
FIGURE 4. Eyespots in Magelona cinthyae sp. nov. A, diffuse pigments; B–F, one pair of eyespots; G–I, more than a pair of eyespots.
FIGURE 10. Magelona minuta, USNM 52510 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 10. Magelona minuta, USNM 52510, slide mounted specimen, slide 4 (medial and posterior fragments), gut contents (dorsal views) (A) silicoflagellate (Dictyocha speculum?); (B) girdle view of a diatom, ostracod fragment?; (C) sand grain mass; (D) diatom, Lyrella?; (E) bivalve/scallop larva? and large fragment presumed to be of animal origin; (F) centric diatom?; (G) unidentified; (H) diatom.
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