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47 results for “Hediste”
Figure 14 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 14. Gametes of Hediste japonica collected from the Ariake Sea. (a) Micrograph of a full-grown oocyte. Scale bar = 100 Mm. (b) Phase-contrast micrograph of a sperm head with a conical acrosome (arrow). Scale bar = 1 Mm.
Figure 20 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 20. Anterior views of parapodium 28–32 of various sized immature atokous specimens (a-c), epitokous mature females (d-f) and males (g-i) of Hediste diadroma sp. nov. Chaetae not shown. (a) 2-year-old specimen after artificial fertilization, Omoigawa River, BW 5.1 mm. (b) 2-year-old specimen after artificial fertilization, Omoigawa River, BW 4.2 mm. (c) 1-year-old specimen after artificial fertilization, Omoigawa River, BW 2.0 mm. (d) Paratype (USNM-1008439), after spawning, BW 2.6 mm. (e) Paratype (OMNH-Iv-4228), after spawning, BW 2.7 mm. (f) Paratype (ZIHU-2094), before spawning, BW 4.6 mm. (g) Paratype (MNHN-Poly-1369), after spawning, BW 3.3 mm. (h) Paratype (SMF-12067), after spawning, BW 2.3 mm. (i) Paratype (ZIHU-2095), after spawning, BW 2.4 mm. Scale bar = 1 mm.
Figure 6 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 6. Chaetae of immature specimens (a-f, NSMT-Pol-107441) and a mature male (g, ZIHU-2103) of Hediste japonica (nontype with body width of 2.8–3.0 mm). (a) Homogomph spiniger from notopodial fascicle in parapodium 5. (b) Heterogomph falciger from neuropodial supra-acicular fascicle in parapodium 30. (c) Simple chaeta from neuropodial supra-acicular fascicle in parapodium 78. (d) Homogomph spiniger from neuropodial infra-acicular fascicle in parapodium 78. (e) Homogomph falciger from neuropodial infra-acicular fascicle in parapodium 30. (f) Heterogomph falciger from neuropodial infra-acicular fascicle in parapodium 5. (g) Epitokous homogomph spiniger from neuropodial infra-acicular fascicle in parapodium 50. Scale bar = 0.1 mm.
Figure 4 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 4. Immature specimen of Hediste japonica (nontype, a-d, NSMT-Pol-107441, e-k, CMNH-ZW-1888). (a) Dorsal view of anterior end (everted proboscis not shown). (b) Dorsal view of the everted proboscis. (c) Ventral view of the everted proboscis. (d) Dorsal view of posterior end. (e-k) Parapodia of the left side (chaetae not shown in f, k). (e & f) Anterior and posterior views of parapodium 1. (g) Anterior view of parapodium 10. (h & i) Anterior and posterior views of parapodium 30. (j & k) Anterior and posterior views of parapodium 72. Scale bar = 1 mm.
Figure 3 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 3. Mature female of Hediste japonica (Lectotype, UMUTZ-PLC-IZ-55A). (a) Dorsal view of anterior end with an everted proboscis. (b) Ventral view of proboscis. (c) Dorsal view of posterior end. (d-j) Parapodia of the left side (chaetae not shown in e, h, j). (d & e) Anterior and posterior views of parapodium 2. (f) Anterior view of parapodium 10. (g & h) Anterior and posterior views of parapodium 30. (i & j) Anterior and posterior views of parapodium 71. Arrows in h and j indicate a diagnostic characteristic, presence of a digitate lobe at tip of the postchaetal ligule in posterior neuropodia. Scale bar = 1 mm.
Figure 17 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 17. Chaetae of an epitokous female of Hediste diadroma sp. nov. (paratype, ZIHU-2092). (a) Homogomph spinigers from notopodial fascicle in parapodium 71. ¥40. (b) Enlargement of base of blade in a. ¥580. (c) Heterogomph spiniger from neuropodial infra-acicular fascicle in parapodium 3. ¥290. (d) Enlargement of base of blade in c. ¥580. (e) Heterogomph falcigers from neuropodial infra-acicular fascicle in parapodium 16. ¥580. (f) Simple chaeta from neuropodial supraacicular fascicle in parapodium 75. ¥580.
Figure 34 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 34. Relationships between body width and (a) body length, (b) wet body weight before shedding of gametes and (c) setiger number in mature adults () and immature specimens () of Hediste atoka sp. nov. (a) Mature adults (n = 44) collected from six localities. (b) Mature adults (n = 27) collected from three localities. Immature specimens (n = 25) were laboratory-bred from artificial fertilization of gametes collected from Nagatagawa River. (c) Mature adults (n = 34) collected from five localities.
Figure 8 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 8. Chaetae of neuropodial supra-acicular fascicle of a juvenile of Hediste japonica (nontype with body width of 1.2 mm, ZIHU-2104). (a) Heterogomph falciger in parapodium 28. (b) Incomplete simple chaeta in parapodium 40, probably originated from a stalk of a heterogomph falciger after detach of its blade. (c) Typical simple chaeta in parapodium 50. Scale bar = 0.05 mm.
Figure 1 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 1. Grouping of paragnaths appearing in different areas on the dorsal (a) and ventral (b) surfaces of an everted proboscis. Groups I to IV on the maxillary ring form the posterior belt, while groups V to VII-VIII on the oral ring form the anterior belt on the retracted proboscis. Hediste atoka sp. nov. (nontype) collected from Kotsukigawa River. Scale bar = 1 mm.
Figure 28 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 28. Mature female of Hediste atoka sp. nov. (holotype, NSMT-Pol-H454). (a) Dorsal view of anterior end; everted proboscis not shown here. (b & c) Dorsal and ventral views of everted proboscis. (d) Dorsal view of posterior end. (e-k) Parapodia of the left side (chaetae not shown in f, g, i, k). (e & f) Anterior and posterior views of parapodium 2. (g) Anterior view of parapodium 10. (h & i) Anterior and posterior views of parapodium 30. (j & k) Anterior and posterior views of parapodium 71. Scale bar = 1 mm.
Figure 24 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 24. Relationship between body width and eye width in mature (closed symbols) and immature specimens (open symbols) of Hediste diadroma sp. nov. Mature specimens were collected from Nanakitagawa River, Otagawa River, and Omoigawa River (6 males,, 18 females,). Immature specimens were collected from Omutagawa River (n = 6,), or laboratory-bred from artificial fertilization of gametes collected from Omoigawa River (n = 12,).
Figure 39 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 39. Number of paragnaths on groups II (a), IV (b) and VII-VIII (c) in proboscis of mature adults of 3 Hediste species collected from 18 localities in Japan. Total numbers on right and left sides are shown for groups II and IV. Average and SD bar are shown in each locality. Data from Tables 2, 4 and 5. The locality numbers are the same as in Fig. 38, and are arranged from north to south. The number on each datum indicates sample size. Significance of difference of mean numbers between the sympatric populations of H. diadroma sp. nov. and H. atoka sp. nov. in three or four localities in Kagoshima Prefecture was tested by the Mann–Whitney U-test; differences are not significant (NS, P> 0.05) or significant (*P <0.001, **P <0.0001).
Figure 38 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 38. Body width (a) and number of setigers (b) of mature adults of 3 Hediste species collected from 18 localities in Japan. Average and SD bar are shown in each locality. The locality numbers are arranged from north to south. The number on each datum indicates sample size. Differences in body width between the sympatric two species in three localities (15, 17, 18) in Kagoshima Prefecture are significant (Mann–Whitney U-test, *P <0.001, **P <0.0001). 1. Usujiri. 2. Obuchinuma. 3. Shinjogawa River. 4. Niidagawa River. 5. Otsuchi. 6. Nanakitagawa River. 7. Natorigawa River. 8. Tonegawa River. 9. Kojima Bay. 10. Otagawa River. 11. Yahatagawa River. 12. Nakagawa River. 13. Nanaura. 14. Osatogawa River. 15. Kaminokawa River. 16. Omoigawa River. 17. Kotsukigawa River. 18. Nagatagawa River.
Figure 37 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 37. Distribution of Hediste atoka sp. nov. 1. Shinjogawa River (type locality). 2. Obuchinuma. 3. Niidagawa River. 4. Otsuchi. 5. Nanakitagawa River. 6. Kokufugawa River. 7. Kumanogawa River. 8. Yoshinogawa River. 9. Yahatagawa River. 10. Kusamigawa River. 11. Tsurikawa River. 12. Shiohama and Tsuyazaki. 13. Kazurugawa River. 14. Wajirogawa River. 15. Kikuchigawa River. 16. Maekawa River. 17. Minamatagawa River. 18. Osatogawa River. 19. Kaminokawa River. 20. Isakugawa River. 21. Manosegawa River. 22. Omoigawa River. 23. Kotsukigawa River. 24. Nagatagawa River. 25. Atagogawa River. 26. Honjogawa River. 27. Oyodogawa River. 28. Koshuku-okawa River.
Figure 23 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 23. Relationships between body width and (a) body length, (b) wet body weight before shedding of gametes and (c) setiger number in mature adults of Hediste diadroma sp. nov. (a) 193 specimens collected from 12 localities, (b) 46 specimens collected from 3 localities, (c) 96 specimens collected from 11 localities.
Figure 27 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 27. Distribution of Hediste diadroma sp. nov. 1. Usujiri. 2. Kominatogawa River. 3. Nanakitagawa River. 4. Natorigawa River. 5. Tonegawa River. 6. Shinkawa River. 7. Otagawa River. 8. Yahatagawa River. 9. Kusamigawa River. 10. Wajirogawa River. 11. Nakagawa River. 12. Domengawa River. 13. Omutagawa River. 14. Kikuchigawa River. 15. Kobe. 16. Maekawa River. 17. Kaminokawa River. 18. Isakugawa River. 19. Manosegawa River. 20. Amorigawa River. 21. Byugawa River. 22. Omoigawa River (type locality). 23. Kotsukigawa River. 24. Nagatagawa River. 25. Atagogawa River. A, Tokushima-shi (Kagawa, 1955; Okada, 1960). B, Qingdao (Sun et al., 1980; Qiu & Wu, 1993).
Figure 32 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 32. Two simple chaetae found in left neuropodial supra-acicular fascicle of setiger 71 of holotype of Hediste atoka sp. nov. (NSMT-Pol-4454). (a) Incomplete simple chaeta, originated from fusion of a blade and a stalk of a heterogomph falciger. (b) Typical simple chaeta. Scale bar = 0.05 mm.
Figure 30 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 30. Number of spinigers in each parapodium throughout body of a mature male (, incomplete specimen, BW 3.2 mm, with 83 setigers, paratype, ZIHU-2099) and a mature female (, complete specimen, BW 3.0 mm, with 86 setigers, paratype, ZIHU-2098) of Hediste atoka sp. nov. homogomph spinigers in (a) notopodial fascicle, (b) neuropodial supra-acicular fascicle, and (c) neuropodial infraacicular fascicle. (d) Heterogomph spinigers in neuropodial infra-acicular fascicle.
Figure 33 in A review of Asian Hediste species complex (Nereididae, Polychaeta) with descriptions of two new species and a redescription of Hediste japonica (Izuka, 1908)
Figure 33. Anterior views of parapodia 30–32 of various sized immature specimens (a-c), mature females (d-f) and mature males (g-i) of Hediste atoka sp. nov. Chaetae not shown. All measurements body width. (a) 4-month-old specimen after artificial fertilization, Nagatagawa River, 3.1 mm. (b) 3-month-old specimen after artificial fertilization, Nagatagawa River, 2.5 mm. (c) 3-month-old specimen after artificial fertilization, Nagatagawa River, 2.6 mm. (d) Female, Kotsukigawa River, 2.5 mm. (e) Female, Kotsukigawa River, 2.5 mm. (f) Female (paratype, CMNH-ZW-1890), 3.0 mm. (g) Male (paratype, USNM- 1008436), 3.3 mm. (h) Male (paratype, SMF-12066), 3.0 mm. (i) Male, Kotsukigawa River, 2.3 mm. Scale bar = 1 mm.
Influence of temperature and salinity on the cellular stress response and energy reserves of Hediste diversicolor.
<p>Raw data on survival rates, wet weight, cellular stress response, oxidative stress and energy reserves of the ragworm Hediste diversicolor collected at Ria de Aveiro (Portugal) and subjected to a combination of different temperatures (24, 27 and 30 ºC) and salinities (20 and 30) over time (14 and 28 days). The biomarkers analysed include: heat shock protein 70 kDa, total ubiquitin, catalase, superoxide dismutase, glutathione-S-transferase, total antioxidant capacity, lipid peroxidation, glucose, glycogen, total protein and total lipids.</p>
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