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104 results for “Magelona”
FIGURE 9 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 9. Magelona minuta (A, B) USNM 52510, fluid preserved specimen, (C–D) NMW.Z.2005.014.0111; E: NMW.Z.2005.014.0122: (A–B) anterior (dorso-lateral and ventral views respectively; (C) anterior (dorso-lateral view); (D) anterior (ventro-lateral view); (E) chaetigers 7–13 (ventral view). All stained with methyl green.
FIGURE 7 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 7. Magelona minuta (NMW.Z.1991.075.1584a after sonification): (A–B) parapodia of chaetigers 16, 19 (anterolateral views); (C–D) 35 and 39 (posterolateral views) respectively; (E–H) abdominal bidentate hooded hooks from chaetigers 30, 21, 23 and 29 respectively (lateral views).
FIGURE 6 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 6. Magelona minuta (NMW.Z.1991.075.1584a): (A) left-hand parapodia of chaetigers 1–3 (posterior view); (B) lefthand parapodia of chaetiger 1 (dorso-lateral view); (C) left-hand parapodia of chaetiger 4 (anterior view); (D) left-hand parapodia of chaetigers 6–9 (anterior view); (E) left-hand parapodia of chaetigers 8–9 (anterior view); (F–H) left-hand neuropodial fascicle of chaetigers 2, 3, 8 respectively (anterior views).
FIGURE 5 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 5. Live photographs of an individual of relaxed (MgCl2) Magelona minuta collected from Jennycliff Bay, Plymouth Sound, UK: (A) whole animal (dorso-lateral view); (B) anterior end and palps (photos by Andrew Mackie).
FIGURE 4. Magelona minuta—USNM 52510 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 4. Magelona minuta—USNM 52510, slide mounted specimen: (A) left-hand notopodia of chaetiger 1 (anterior view); (B) neuropodia of same chaetiger; (C–D) left-hand parapodia of chaetigers 4 and 5 respectively (anterior views, chaetiger 5 original drawn by Eliason); (E) notopodia of chaetiger 35 (3rd hook from lamella, tridentate); (F–G) abdominal hooded hooks from medial abdominal chaetigers (outermost left-hand hook of F, tridentate). N.B. assigned chaetiger number assumes that parapodia were mounted consecutively by Eliason.
FIGURE 3. Magelona minuta—USNM 52510, A–K in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 3. Magelona minuta—USNM 52510, A–K, fluid preserved specimen; L–Q slide mounted specimen: (A) anterior (dorsal view); (B) prostomium (dorsal view); (C–M) parapodia of chaetigers 1–10, 35 respectively; (N–O) bidentate abdominal hooded hooks (lateral and frontal views respectively), (P–Q) sporadic tridentate hooded hooks of medial abdominal chaetigers (lateral and frontal views respectively).
FIGURE 1 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 1. Measurement of the angle between the main fang and secondary tooth/teeth of abdominal hooded hooks. Dotted line: baseline from the apical tip of the secondary tooth (A) to base of the same tooth (B). Solid line: from tip of the main fang (C) to the base of the secondary tooth (B).
FIGURE 2 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 2. Magelona minuta—slide mounted anterior fragment (USNM 52510). Slide 1, left-hand parapodia of chaetigers 1– 4 respectively; Slide 2, left-hand parapodia of chaetigers 5–8 respectively; Slide 3, parapodia of chaetigers 9, 10, 16, 35 (both sides for the former two, right-hand and left-hand parapodia respectively for the latter two); Slide 4, majority of specimen dissected into three fragments: 1) prostomium and 8 thoracic chaetigers; 2) 26 medial abdominal chaetigers and 3) 8 posteriormost abdominal chaetigers N.B. label of slide 1 mounted underneath, shown here on top for clarity. Chaetiger numbers assume that parapodia were mounted consecutively, although are comparable with other material herein examined.
FIGURE. 1 in The monophyly of Magelona F. Müller, 1858 (Polychaeta, Magelonidae): Comments on Meissner et al.'s (2023) reinstatement of Octomagelona Aguirrezabalaga, Ceberio & Fiege, 2001
FIGURE. 1. Strict consensus tree, modified from Mortimer et al. (2021: fig. 17), indicating a paraphyletic Magelona relative to Octomagelona (bold). The only viable solution to remove paraphyly was to make Octomagelona a junior synonym of Magelona; i.e., provide a formal definition of Magelonidae/Magelona as a phylogenetic hypothesis, wherein all less inclusive phylogenetic hypotheses are unnamed.
FIGURE 6 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis
FIGURE 6. Map highlighting known records of Magelona equilamellae.
FIGURE 9 in Unearthing the diversity of Japanese Magelona (Annelida: Magelonidae); three species new to science, and a redescription of Magelona japonica
FIGURE 9. Known distribution records for Magelona japonica.
FIGURE 8 in Redescription of Magelona minuta Eliason, 1962 (Annelida), with discussions on the validity of Magelona filiformis minuta
FIGURE 8. Magelona minuta (NMW.Z.2005.014.0117) posterior region (ventral view).
FIGURE 9 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis
FIGURE 9. Magelona filiformis, holotype (BMNH 1959.4.2.1A–B): (A) LH parapodia of chaetigers 9 and 10 (ventro-lateral view); (B) LH parapodia of chaetigers 11–13 (ventro-lateral view); (C) LH abdominal parapodia from chaetiger 19 (ventrolateral view); (D) chaetigers 24–25 (ventral view); (E) LH parapodia of chaetiger 64 (ventral view); (F) pygidium and last four chaetigers (ventral view, anus just visible); (G) tridentate abdominal hooded hooks (frontal view) from chaetiger 43; (H) tridentate abdominal hooded hooks (lateral view) from chaetiger 45 (small hook visible adjacent to lateral lamellae). (A) Anus; (AC) Anal cirri; (Ne) Neuropodia; (No) Notopodia; (Pre) Prechaetal; (STH) Small tridentate hook.
FIGURE 8 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis
FIGURE 8. Magelona filiformis, holotype (BMNH 1959.4.2.1A–B, slide mounted, thorax in a lateral position): (A) prostomium and first two chaetigers (lateral view, burrowing organ partially everted, both palps attached); (B) prostomium (lateral view); (C, D) palp sections (lateral views, proximal and distal respectively); (E, G, I, K, M, P, R) notopodial lamellae of chaetigers 1, 3, 4, 5, 6, 8, 9 respectively; (J, S) neuropodial lamellae of chaetigers 4 and 9 respectively; (F, H, L, N, O, Q) parapodia of chaetigers 1, 3, 5, 6, 7, 8 respectively. (BO) Burrowing organ; (Ne) Neuropodia; (No) Notopodia; (Pp) Palp; (Post) Postchaetal; (Pr) Prostomium; (Pre) Prechaetal; (SDL) Superior dorsal lobe. Scale bars (E–S) = 100 µm.
FIGURE 7 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis
FIGURE 7. Magelona filiformis, paratypes (BMNH 1959.4.2.6–10, (A, B) "pink female" individual; (C–G) "dark male" individual. N.B. Wilson's original label stated "?cork staining" [sic], suggesting the dark worms were so because of leaching from the cork that stoppered the vial: (A) anterior and many abdominal segments (initially dorsal view becoming lateral in more abdominal chaetigers); (B) prostomium and first two chaetigers (dorsal view, burrowing organ partially everted, oval. Abdominal segments visible underneath prostomium); (C) prostomium and first three chaetigers (dorso-lateral view); (D, E) anterior and first few abdominal segments (dorso-lateral and ventro-lateral views respectively); (F, G) thoracic-abdominal junction (dorsolateral and ventro-lateral views respectively). (BO) Burrowing organ; (No) Notopodium; (Ne) Neuropodium.
FIGURE 2 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis
FIGURE 2. Magelona equilamellae, larger syntype (SMF 4675): (A) anterior (dorso-lateral view, both palps visible, incomplete); (B) prostomium and first two chaetigers (dorso-lateral view); (C) venter between chaetigers 7 (left) to 11 (right) (ventrolateral view); (D) anterior (dorsal view); (E) anterior (ventral view, both palps visible, incomplete). (D, E) stained with methyl green.
FIGURE 11 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis
FIGURE 11. European Magelona species: M. minuta, M. filiformis, M. lusitanica, M. johnstoni, M. mirabilis, M. alleni, M. equilamellae and M. wilsoni (adapted from Mills & Mortimer 2018; Mortimer & Mackie 2014 and Mills & Mortimer 2019a and current study (M. lusitanica, paratype NMW.Z.2010.010.0004; M. wilsoni, NMW.Z.2010.010.0008)). (Photos of M. johnstoni, M. mirabilis, M. alleni by Andrew Mackie).
FIGURE 10 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis
FIGURE 10. Magelona filiformis minuta, syntype (BMNH 1959.4.2.11–13): (A, C) anterior (dorsal view, latter stained with methyl green); (B) anterior (ventral view). Right hand palp retained, broken.
Figure 15 in Integrative taxonomy of West African Magelona (Annelida: Magelonidae): species with thoracic pigmentation
Figure 15. Magelona fasciata. Holotype (Ghana St. 7GH–02, ZMBN132144) stained with methyl green: A, anterior region (dorsal view); B, anterior region (dorsolateral view); C, prostomium and first eight chaetigers (dorsoanterior view); D, anterior region (ventral view, showing buccal region); E, detail of thoracic region (dorsal view).
Figure 16 in Integrative taxonomy of West African Magelona (Annelida: Magelonidae): species with thoracic pigmentation
Figure 16. Magelona mackiei. Holotype (Nigeria St. 5N–14, ZMBN107309): A, anterior region (dorsal view); B, prostomium, dorsal view; C, neuropodium of chaetiger 1 (anterior view); D, parapodium of chaetiger 2 (anterior view); E, F, neuropodial lamella of chaetiger 2 (ventral and lateral views, respectively); G, parapodium of chaetiger 3; H, parapodium of chaetiger 4 (anterior view); I, neuropodial lamella of chaetiger 4 (ventral view); J–O, parapodia of chaetigers 5–9, and 11, respectively (anterior views); P, Q, bidentate hooded hooks of chaetiger 15 (oblique lateral view; P, outermost hook of ramus next to process).
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