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365 results for “Nereididae”
Figure 3 in Incipient speciation within the Namalycastis abiuma (Annelida: Nereididae) species group from southern India revealed by combined morphological and molecular data
Figure 3. Neighbour joining tree derived from the COI dataset. Specimens pertaining to the N. abiuma species group are indicated in bold font, and morphotype (M1-M6) and haplotype (H1-H4) numbers, as referred to in text, are denoted by the brackets
Figure 2 in Incipient speciation within the Namalycastis abiuma (Annelida: Nereididae) species group from southern India revealed by combined morphological and molecular data
Figure 2. Selected morphological characters of the various N. abiuma species group morphotypes (M1-M6). A, M1, jaws with 11 teeth; B, M3, jaws with 10 teeth; C, M2, jaws with 9 teeth; D, M5 and M6 jaws with 8 teeth; E, M5, specimen with eyes absent; F, specimen with merged eyes; G-H, M5, specimens with three eyes; I, M5, specimen with faded eyes; J, M4, specimen with the longer tentacular cirri, indicative of species group 2 (see text); K, M4, specimen with relatively wider parapodium; L-M, M6, specimens showing three acicula; N, multi-incised pygidium.
Figure 1 in Molecular phylogenetics of the Neanthes acuminata (Annelida: Nereididae) species complex
Figure 1. Maximum-likelihood tree resulting from partitioned analysis of the full concatenated data set in Garli 2.0. Numbers above branches represent ML bootstrap support values; numbers below branches represent posterior probabilities from an unpartitioned Bayesian analysis in MrBayes 3.2.1. Within each dashed box names refer to all populations present within that clade.
Figure 2 in Molecular phylogenetics of the Neanthes acuminata (Annelida: Nereididae) species complex
Figure 2. Maximum-likelihood tree resulting from partitioned analysis of the "all three genes" data set in Garli 2.0. Numbers above branches represent ML bootstrap support values; numbers below branches represent posterior probabilities from an unpartitioned Bayesian analysis in MrBayes 3.2.1
FIG. 1 in Revision of Sinonereis Wu & Sun, 1979 (Annelida: Nereididae)
FIG. 1. — Morphology of Sinonereis Wu & Sun, 1979 species: A, anterior end; B, chaetiger 3 of a male, anterior view; C, chaetiger 3 of a female, anterior view; D, napiform dorsal cirrus from mounted parapodium 6, anterior view; E, parapodium 35, anterior view. Abbreviations: Ac, anterior cirri; An, antennae; Cp, cirrophore; Cr, cirrostyle; Dc, dorsal cirrus; DoLa, dorsal lamellae; Jw, jaws; LVc, lower lamella of ventral cirrus; NaL, neuroacicular ligule; NeV, neuropodial ventral ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; PoL, postchaetal lobe; Pr, prostomium; PreL, prechaetal lobe; UVc, upper lamella of ventral cirrus; Vc, ventral cirrus; VeLa, ventral lamella. A, D, E from paratype (MBMCAS A-37); B, redrawn from Wu & Sun (1979: fig. 1c); C, redrawn from Miura (1990: fig. 1f). All chaetae omitted.
FIG. 2 in Revision of Sinonereis Wu & Sun, 1979 (Annelida: Nereididae)
FIG. 2. — Sinonereis heteropoda Wu & Sun, 1979: A, G, holotype (MBMCAS A-36); B-E, H-K, paratype (MBMCAS A-37); F paratype (MBMCAS A-39): A, whole specimen, dorsal view (insert: posterior end, dorsal view); B, C, anterior end, dorsal view; D, pharynx, dorsal view; E, same, ventral view; F, supra-acicular heterogomph falciger, chaetiger 5; G, sub-acicular heterogomph falciger, chaetiger 44; H, parapodium 5, left parapodium (neuropodial ventral ligule and ventral cirri missing); I, chaetiger 6, left parapodium; J, chaetiger 23, right parapodium; K, chaetiger 35, right parapodium. Scale bars: A, 1 mm; B, C, 0.5 mm; D, E, 0.2 mm; F, G, 10 μm; H-K, 0.1 mm.
FIG. 3 in Revision of Sinonereis Wu & Sun, 1979 (Annelida: Nereididae)
FIG. 3. — Nicon sinica Wu & Sun, 1979: A, D-K, holotype (MBMCAS A-39); B, C, paratype (MBMCAS A-41): A, B, anterior end, dorsal view; C, whole specimen, dorsal view; D, whole specimen, lateral view; E, anterior end, lateral view; F, sub-acicular heterogomph spiniger, chaetiger 19; G, sub-acicular heterogomph falciger, chaetiger 19; H, chaetiger 3, left parapodium (ventral cirrus missing); I, chaetiger 7, left parapodium; J, chaetiger 19, left parapodium; K, chaetiger 39, left parapodium. Scale bars: A, B, E, 0.5 mm; C, D, 1 mm; F, G, 10 μm; H-K, 0.1 mm.
Fig. 4. Neanthes helenae Kinberg, 1865. A–C, I–P in Redescriptions of Neanthes Kinberg, 1865 (Annelida: Errantia: Nereididae) species from worldwide regions
Fig. 4. Neanthes helenae Kinberg, 1865. A–C, I–P. Holotype of Nereis (Neanthes) nanciae Day, 1949 (NHMUK 1950.1.5.72-95) from Jamestown, St Helena Island, atokous. A. Entire body in dorsal view. B. Anterior end in dorsal view.C. Anterior region in ventral view, arrow indicates ventrolateral projection. I. Left parapodium from chaetiger 1 in posterior view. J. Left parapodium from chaetiger 7 in posterior view. K. Right parapodium from chaetiger 21 in anterior view. L. Left parapodium from chaetiger 30 in posterior view with ventral cirri contracted and hidden behind the neuroacicular ligule. M. Right parapodium from chaetiger 60 in anterior view. N. Heterogomph fused falciger from supracicular neurochaetae (chaetiger 30). O. Heterogomph falciger from subacicular neurochaetae (chaetiger 7). P. Heterogomph falciger from subacicular neurochaetae (chaetiger 30). — D–H, Q. Paratype of Nereis (Neanthes) nanciae Day, 1949 (NHMUK 1950.1.5.72-95) from Jamestown, St Helena Island, atokous. D. Anterior region in lateral view, arrow indicates ventrolateral projection. E. Left jaw in dorsal and ventral views, respectively. F. Inner canals of jaws in ventral view. G. Non-everted pharynx in ventral view. H. Area VI of oral ring of non-everted pharynx in ventral view, arrows indicate p-bars. Q. Posterior end in dorsal view. Roman numerals refer to the areas and Arabic numbers to chaetigers. Scale bars: A–C, Q = 1 mm; D–E, G = 0.5 mm; F, J–L = 0.2 mm; H–I, M = 0.1 mm; N–P = 20 µm.
Fig. 5 in Redescriptions of Neanthes Kinberg, 1865 (Annelida: Errantia: Nereididae) species from worldwide regions
Fig. 5. Neanthes mossambica (Day, 1957). Holotype (NHMUK 1961.16.22) from Morrumbene, Mozambique, atokous female. A. Entire body in dorsal view. B. Anterior end in dorsal view. C. Noneverted pharynx in ventral view (arrow indicates p-bar). D. Area VI of non-everted pharynx in ventral view (arrow pointing anteriorly). E. Left parapodium from chaetiger 1 in posterior view. F. Right parapodium from chaetiger 9 in anterior view. G. Left parapodium from chaetiger 21 in posterior view. H. Right parapodium from chaetiger 40 in anterior view. I. Right parapodium from chaetiger 63 in anterior view with ventral cirri contracted and hidden behind the neuroacicular ligule. J. Homogomph spiniger from notochaetae (chaetiger 9). K. Heterogomph spiniger from subacicular neurochaetae (chaetiger 9). L. Heterogomph falciger from supracicular neurochaetae (chaetiger 9). M. Heterogomph falciger from subacicular neurochaetae (chaetiger 9). Roman numerals refer to the areas and Arabic numbers to chaetigers. Scale bars: A = 2 mm; B = 1 mm; C = 0.5 mm; D = 0.1 mm; E–I = 0.2 mm; J–M = 20 µm.
Fig. 1 in Redescriptions of Neanthes Kinberg, 1865 (Annelida: Errantia: Nereididae) species from worldwide regions
Fig. 1. Neanthes chilkaensis (Southern, 1921). Lectotype (NHMUK 1938.5.7.27) from Chilika Lake, Orissa, India, atokous. A. Entire body in dorsal view (inset: approach of pygidium). B. Anterior end in dorsal view. C. Non-everted pharynx in ventral view. D. Dorsum of oral ring of non-everted pharynx in ventral view. E. Left parapodium from chaetiger 2 in posterior view. F. Left parapodium from chaetiger 13 in posterior view. G. Right parapodium from chaetiger 26 in anterior view. H. Right parapodium from chaetiger 38 in anterior view with ventral cirri contracted and hidden behind the neuroacicular ligule. I. Parapodium from chaetiger 52 in anterior view. J. Homogomph spiniger from notochaetae (chaetiger 13). K. Homogomph spiniger from supracicular neurochaetae (chaetiger 13). L. Heterogomph spiniger from subacicular neurochaetae (chaetiger 2). M. Heterogomph falciger from subacicular neurochaetae (chaetiger 13). Roman numerals refer to the areas and Arabic numbers to chaetigers. Scale bars: A = 3 mm; B = 1 mm; C = 0.5 mm; D–I = 0.2 mm; J–M = 20 µm.
Fig. 3. Neanthes helenae Kinberg, 1865. A–B, E–Q in Redescriptions of Neanthes Kinberg, 1865 (Annelida: Errantia: Nereididae) species from worldwide regions
Fig. 3. Neanthes helenae Kinberg, 1865. A–B, E–Q. Complete syntype (SMNH Type-457) from Jamestown, St Helena Island, atokous. C–D. Incomplete syntype (SMNH Type-457) from Jamestown, St Helena Island, atokous. A. Entire body in dorsal view. B. Anterior end in dorsal view. C. Everted pharynx in dorsal view. D. Everted pharynx in ventral view. E. Right parapodium from chaetiger 1 in anterior view with ventral cirri missing. F. Right parapodium from chaetiger 8 in anterior view. G. Right parapodium from chaetiger 27 in anterior view. H. Right parapodium from chaetiger 42 in anterior view with ventral cirri missing. I. Right parapodium from chaetiger 60 in anterior view. J. Homogomph spiniger from notochaetae (chaetiger 27). K. Heterogomph spiniger from subacicular neurochaetae (chaetiger 1). L. Heterogomph falciger from subacicular neurochaetae (chaetiger 1). M. Heterogomph, fused falciger from supracicular neurochaetae (chaetiger 42). N. Heterogomph falciger from supracicular neurochaetae (chaetiger 60). O. Heterogomph falciger from subacicular neurochaetae (chaetiger 13). P. Heterogomph falciger from subacicular neurochaetae (chaetiger 60). Q. Posterior end in dorsal view. A–D, Q: stained with Shirlastain A. Roman numerals refer to the areas and Arabic numbers to chaetigers. Scale bars: A–B = 1 mm; C–D, Q = 0.5 mm; E–I = 0.1 mm; J–P = 20 µm.
Fig. 2. Neanthes galetae Fauchald, 1977. A–B, E–M in Redescriptions of Neanthes Kinberg, 1865 (Annelida: Errantia: Nereididae) species from worldwide regions
Fig. 2. Neanthes galetae Fauchald, 1977. A–B, E–M. Holotype (USNM 53088) from Galeta Reef, Panama, atokous. C–D. Paratype (USNM 53089) from Galeta Reef, Panama, atokous. A. Entire body in dorsal view. B. Anterior end in dorsal view. C. Non-everted pharynx in ventral view, black arrow indicates merged paragnaths. D. Right jaw in dorsal view, white arrow indicates canals. E. Right parapodium from chaetiger 2 in anterior view. F. Right parapodium from chaetiger 8 in anterior view. G. Right parapodium from chaetiger 16 in anterior view. H. Right parapodium from chaetiger 33 in anterior view. I. Right parapodium from chaetiger 47 in anterior view. J. Supracicular (Sp) and subacicular (Sb) neurochaetae (chaetiger 1). K. Homogomph spiniger from supracicular neurochaetae (chaetiger 47). L. Heterogomph falciger from supracicular neurochaetae (chaetiger 47). M. Heterogomph falciger from subacicular neurochaetae (chaetiger 47). Roman numerals refer to the areas and Arabic numbers to chaetigers. Scale bars: A = 0.5 mm; B = 0.2 mm; C–I = 0.1 mm; J = 20 µm; K–M = 10 µm.
Fig. 8 in Neanthes goodayi sp. nov. (Annelida, Nereididae), a remarkable new annelid species living inside deep-sea polymetallic nodules
Fig. 8. Neanthes goodayi sp. nov., live specimens, in situ images. A. Paratype (NHM_2026), burrowing within nodule crevice. B. Detail of paratype (NHM_2026), in burrow. C. Paratype (NHM_512), burrowing within a foraminiferan growing on nodule. D–E. Detail of paratype (NHM_512), in burrow. F. Detail of paratype (NHM_1624), burrowing within a mudball encrusting the nodule surface. G–H. Details of paratype (NHM_1624), in burrow. Scale bars: 1 cm.
Fig. 6 in Neanthes goodayi sp. nov. (Annelida, Nereididae), a remarkable new annelid species living inside deep-sea polymetallic nodules
Fig. 6. Neanthes goodayi sp. nov., epitoke paratype (NHM_1783), preserved specimen. A. Entire specimen, dorsal view. B. Extruded pharynx, dorsal view (left), ventral view (right). C. Detail of prenatatory parapodium 4, with modified dorsal and ventral cirri, posterior view. D. Detail of modified natatory swimming parapodium, chaetiger 31, posterior view. E. Detail of papillated dorsal cirrus, chaetiger 31, posterior view. F. Modified swimming spinigers, subacicular neurocheatal fascicle, chaetiger 32. Abbreviations: DC = dorsal cirrus; VC = ventral cirrus. Lobe at base of dorsal cirrus in D and E outlined with a fine white or black line. Parapodium in C dissected from left side of specimen; parapodium in D dissected from right side of specimen, with images D and E laterally inverted to follow direction of other plates. Scale bars: A = 1 mm; B = 500 µm; C–D = 200 µm; E = 100 µm; F = 50 µm.
Fig. 5 in Neanthes goodayi sp. nov. (Annelida, Nereididae), a remarkable new annelid species living inside deep-sea polymetallic nodules
Fig. 5. Neanthes goodayi sp. nov., juvenile specimens. A. Paratype (1254), entire specimen, dorsal view. B. Paratype (NHM_171) dorsal anterior view. C. Paratype (NHM_127) entire specimen, dorsal view. D. Paratype (NHM_127), close up of dorsal anterior, arrows mark position of anterior eye pair. Scale bars: A, C = 1 mm; B = 500 µm; D = 100 µm.
Fig. 4 in Neanthes goodayi sp. nov. (Annelida, Nereididae), a remarkable new annelid species living inside deep-sea polymetallic nodules
Fig. 4. Neanthes goodayi sp. nov., paratypes. A. Paratype (NHM_1624), preserved specimen; dorsal anterior view, live image (left); lateral anterior view, preserved specimen (right). B. Paratype (NHM_755); dorsal anterior view, live image (left), preserved specimen (right); arrows marking pigmentation. C. Paratype (NHM_238), dorsal anterior view, arrows mark pigmentation. D. Paratype (NHM_512), dorsal anterior view, arrows mark pigmentation. Scale bars = 1 mm.
Fig. 2 in Neanthes goodayi sp. nov. (Annelida, Nereididae), a remarkable new annelid species living inside deep-sea polymetallic nodules
Fig. 2. Neanthes goodayi sp. nov., holotype (NHM_739). A. Live image, entire specimen. B. Preserved entire specimen, dorsal view (left), ventral view (right). C. Live image, anterior view, arrows mark pigmentation. D. Preserved specimen, anterior view, arrows mark pigmentation. E. Dissected pharynx, with pharyngeal areas I, II, III, IV, VI, VII–VIII highlighted. Scale bars: B = 1 mm; D = 500 µm; E = 250 µm.
Fig. 3 in Neanthes goodayi sp. nov. (Annelida, Nereididae), a remarkable new annelid species living inside deep-sea polymetallic nodules
Fig. 3. Neanthes goodayi sp. nov., holotype (NHM_739). A. Chaetiger 1, posterior view. B. Chaetiger 3, posterior view. C. Chaetiger 6, posterior view. D. Chaetiger 20, posterior view. E. Chaetiger 29, posterior view. F. Chaetiger 29, posterior view, detail of neuracicular postchaetal lobe. G. Chaetiger 40, posterior view. H. Chaetiger 46, posterior view. I. Notochaetae, detail of homogomph spinigers, chaetiger 20. J. Supraciular neurochaetae, detail of homogomph spiniger, chaetiger 3. K. Supracicular neurochaetae, detail of heterogomph falciger, chaetiger 10. L. Subacicular neurochaetae, detail of homogomph spiniger (left) and homogomph falciger (right), chaetiger 20. M. Subacicular neurochaetae, detail of heterogomph falcigers, chaetiger 20. Abbreviations: PtL = postchaetal lobe; VC = ventral cirrus. Postchaetal lobe in A–D, F outlined with a fine white line. Parapodia in C, E–H dissected from left side of specimen; parapodia in A–B, D dissected from right side of specimen, with images laterally inverted follow direction of other plates. Scale bars: A–E, G–H = 200 µm; F, I–M = 50 µm.
Fig. 1 in Neanthes goodayi sp. nov. (Annelida, Nereididae), a remarkable new annelid species living inside deep-sea polymetallic nodules
Fig. 1. Sampling sites, showing occurrences of Neanthes goodayi sp. nov. A. UK-1 Stratum-A study area within the UK Seabed Resources UK-1 exploration contract area. B. UK-1 Stratum-B study area within the UK Seabed Resources UK-1 exploration contract area. C. OMS Stratum-A study area, in the Ocean Mineral Singapore (OMS) polymetallic nodule exploration contract area. D. Area of Particular Environmental Interest APEI-6. Inset map showing location of Clarion-Clipperton Fracture Zone in the Central Eastern Pacific. Bathymetric survey data and sampling localities from the AB01 2013 RV Melville survey cruise (MV1313) and AB02 2015 RV Thomas G. Thompson survey cruise (TN319); data courtesy of Craig R. Smith (University of Hawaii), UK Seabed Resources Ltd. and Seafloor Investigations, LLC.
Figure 13. Pseudonereis trimaculata Horst, 1924 ZMH P-16567. A, parapodium 3 in Revision of Pseudonereis (Polychaeta, Nereididae)
Figure 13. Pseudonereis trimaculata Horst, 1924 ZMH P-16567. A, parapodium 3rd chaetiger anterior view. B, parapodium 11th chaetiger anterior view. C, parapodium 30th chaetiger anterior view. D, parapodium 50th chaetiger posterior view. E, parapodium 65th chaetiger anterior view. F, heterogomph spiniger neuropodial ventral fascicle 30th chaetiger. G, heterogomph falciger neuropodial dorsal fascicle 30th chaetiger. H, homogomph spiniger neuropodial dorsal fascicle 30th chaetiger. I, homogomph spiniger notopodium 3rd chaetiger. End-view drawings of parapodia in A–D are not to scale. Scale bar in A–E 0.1 mm, F–I 0.01 mm.
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