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1,133 results for “Copepods”
Figure 23 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 23. Maemonstrilla simplex sp. nov., female holotype (KMNH IvR 700 222), south coast of Ishigaki Island, 30.iv.1994, left legs 1–4, setules omitted, some setae cut short. A, leg 1 and intercoxal sclerite, anterior. B, detail of outer apical exopodal setae (and distal pore) of leg 1 (see also Fig. 6C). C, leg 2, posterior. D, leg 3 and intercoxal sclerite, posterior. E, leg 4, anterior. Arrows in A and D indicating vestige of proximal inner endopodal seta. Scale bars = 0.2 mm in A, C–E; 0.1 mm in B.
Figure 19 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 19. Maemonstrilla okame sp. nov., two non-ovigerous female paratypes (SO lab), Sesoko Island, 22.v.1996, metasome and urosome, SEM. A, dorsal surface of free pedigers 1 and 2, anterior at top, arrows indicating obscured pair of large pores. B, dorsal surface of free pediger 3, anterior at top. C, dorsal surface of free pediger 4 and genital compound somite (g; letter placed on indistinct dorsal suture), anterior at top. D, telson (t) and caudal rami (f), dorsal view. E, part of posterior margin of penultimate segment of urosome, posterior to right. F, genital compound somite, ventral view, anterior at bottom, showing copulatory pore (arrow) and small ventral knob on posterior part (above). Scale bars = 50 Mm in A–C, F; 20 Mm in D, E.
Figure 15 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 15. Maemonstrilla spinicoxa sp. nov., ovigerous female paratype (SO lab), off Kabira, Ishigaki Island, 14.iv.1996, SEM. A, dorsal surface of free pedigers 1 and 2, anterior at top. B, dorsal surface of free pediger 3, anterior at top. C, dorsal surface of free pediger 4, genital compound somite (g, letter placed on this segment's dorsal suture), and penultimate segment, anterior to left. D, genital compound somite, lateral view, anterior to left, showing bases of ovigerous spines (small arrow) and ventroposterior process (large arrow). E, exopod of left leg 2 or 3, lateral view, anterior to left. F, detail of outer apical exopodal seta of swimmng leg. Scale bars = 50 Mm in A–E; 10 Mm in F.
Figure 13 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 13. Ovigerous females of Maemonstrilla gen. nov., south coast of Ishigaki Island, 30.iv.1994, photomicrographs of preserved specimens. A, Maemonstrilla polka sp. nov., holotype (KMNH IvR 700 205). B, Maemonstrilla turgida (A. Scott, 1909) comb. nov. (KMNH IvR 700 226). Scale bars = 0.5 mm.
Figure 10 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 10. Maemonstrilla polka sp. nov., female paratype (SO lab), south coast of Ishigaki Island, 30.iv.1994, SEM. A, dorsal surface of posterior part of cephalothorax and free pedigers 1 and 2, anterior at top. B, dorsal surface of free pedigers 3 and 4, anterior at top. C, dorsal surface of penultimate segment and telson (t) of urosome, anterior at top. D, proximal part of coxa of leg 1, showing spinulose outer lobes (arrows), anterior to left. Scale bars = 100 Mm in A, B; 20 Mm in C, D.
Figure 22 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 22. Maemonstrilla simplex sp. nov. A, C–F, female holotype (KMNH IvR 700 222); B, female paratype (KMNH IvR 700 223), both south coast of Ishigaki Island, 30.iv.1994. A, habitus, reticulations in area marked with asterisk (*) obscured. B, cephalothorax showing full extent of obvious reticulation. C, detail of oral papilla region, showing scars and two pairs of pores (arrowheads). D, anterior end of cephalothorax, dorsal view. E, urosome, lateral view, with legs 5 and ovigerous spines (one of latter broken), setules of setae omitted, furcal setae cut short. F, urosome, dorsal view, furcal setae cut short and with setules omitted. Scale bars = 0.5 mm in A, B; 0.1 mm in C; 0.2 mm in D–F.
Figure 8 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 8. Antennules of two species of Maemonstrilla gen. nov., setules omitted, setal designations after Grygier & Ohtsuka (1995: fig. 6). A, Maemonstrilla polka sp. nov., female paratype (SO lab), south coast of Ishigaki Island, 30.iv.1994, right antennule, ventral view. B, Maemonstrilla spinicoxa sp. nov., female holotype (KMNH IvR 700 217), Sesoko Island, 13.viii.1989, right antennule, ventral view. C, M. spinicoxa sp. nov., same specimen, left antennule, dorsal view. Scale bar = 0.1 mm.
Figure 4 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 4. Maemonstrilla hyottoko sp. nov., females, Sesoko Island, 13.viii.1989: A–D, F, G, holotype (KMNH IvR 700 202), E (same specimen as Fig. 2A; slide-mount of legs, KMNH IvR 700 203). A, right antennule, dorsal view, setules omitted, setal designations after Grygier & Ohtsuka (1995: fig. 6). B–D, right legs 1–3, respectively, posterior view, setules omitted. E, outer apical exopodal seta of left leg 3, setules along non-toothed side omitted (cf. Fig. 5C). F, right leg 4, posterior view, setules omitted. G, fourth free pediger and genital compound somite, lateral view, showing right leg 5, proximal parts of ovigerous spines, and posteroventral spur. Scale bar = 0.1 mm in A, E, G; 0.2 mm in B–D, F.
Figure 5 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 5. Maemonstrilla hyottoko sp. nov., female paratype (SO lab), Sesoko Island, 13.viii.1989, SEM, anterior at top in all cases. A, dorsal surface of free pedigers 1 and 2; two obscured pores indicated by arrows. B, dorsal surface of free pediger 3. C, dorsal surface of urosome, including genital compound somite (g), and outer faces of legs 4. D, rear dorsal surface of free pediger 4, showing pit setae. E, dorsal surface of rear of urosome, including telson (t). Scale bars = 50 Mm in A, B, E; 100 Mm in C; 10 Mm in D.
Figure 6 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 6. Maemonstrilla hyottoko sp. nov., female paratypes (SO lab), Sesoko Island, 13.viii.1989, SEM. A, protopods of legs 3 and 4, outer view (anterior to left). B, endopod of a swimming leg, inner view showing site of absent seta on first segment (arrow). C, outer apical seta (large arrow) on third exopodal segment of leg 1 and pore (small arrow) on third endopodal segment of leg 2, anterior view. D, telson (t) and caudal rami (c), ventral view, showing anal opening (large arrow), and ventral pores and condylar articulations (small arrow) of rami. Scale bars = 50 Mm in A; 20 Mm in B, D; 10 Mm in C.
Figure 3 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 3. Maemonstrilla hyottoko sp. nov., female paratypes (SO lab), Sesoko Island, 13.viii.1989, SEM. A, 'face' and left antennule (a), ventral view, showing oral papilla (o), scars (s), three pairs of pores (arrows), and segments of antennule (1–4). B, anterodorsal surface of cephalothorax (anterior at bottom), showing pores (small arrows) and pit-like organ (large arrow). C, detail of pit-like organ in B. D, pores (arrows) at border between narrow and wide reticular meshes in posterior half of cephalothorax, posterior to right. Scale bars = 50 Mm in A, D; 100 Mm in B; 10 Mm in C.
Figure 1 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 1. Body form of females of representative species of Maemonstrilla gen. nov., with explanation of segmental terminology and measurements taken. A, Maemonstrilla polka sp. nov., south coast of Ishigaki Island, 30.iv.1994, lateral view (paratype, SO lab; same specimen as Fig. 7A), with red dots. B, Maemonstrilla turgida (A. Scott, 1909) comb. nov., Sesoko Island, 31.viii.1989, dorsal view (KMNH IvR 700 225). Abbreviations: al, antennal length; ch, cephalothorax height; cl, cephalothorax length; cr, caudal ramus; cw, cephalothorax width; fp1–4, free pedigers 1–4 (i.e. thoracomeres 3–6); gcs, genital compound somite; ip, incorporated pediger (i.e. thoracomere 2); ml, metasome length; ps, penultimate somite; t, telson; ul, urosome length; w, waist. Scale bars = 0.5 mm.
Figure 7 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 7. Maemonstrilla polka sp. nov., female paratype (SO lab), south coast of Ishigaki Island, 30.iv.1994, SEM. A, habitus, lateral view, some legs removed (same specimen as in Figs 1A, 13A). B, oral papilla (o) and scars (arrow), left lateral view. C, detail of scars from B. D, left antennule, outer view, foreshortened due to viewing angle, more distal segments numbered (2–4), arrow indicating branches of b5-seta. Scale bars = 1.0 mm in A; 0.1 mm in B, D; 10 Mm in C.
Figure 9 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 9. Maemonstrilla polka sp. nov., female paratype (SO lab), south coast of Ishigaki Island, 30.iv.1994, SEM. A, anteroventral part of cephalothorax from oral papilla (o) to pair of hair-like sensilla on 'forehead' (far right, arrow), with three pairs of pores (other arrows). B, cephalothorax, right posterodorsal margin, dorsal view, showing five pit setae (arrows). C, free pediger 2, lateral view, showing two lateral pairs of pit setae (arrows) and two arcuate sclerites at base of leg (arrowheads), anterior to left. D, genital compound somite and penultimate segment of urosome, lateral view, anterior to left, showing apron-like posteroventral protrusion of compound somite (arrow). E, leg 5 (arrow). Scale bars = 0.1 mm in A–C, E; 50 Mm in D.
Figure 17 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 17. Maemonstrilla okame sp. nov., two non-ovigerous female paratypes (SO lab), Sesoko Island, 22.v.1996, SEM. A, anterior half of cephalothorax, lateral view. B, anteroventral part of cephalothorax (i.e. 'face') between oral papilla (o) and bases of antennules (top corners), showing two pairs of pores and two pairs of scars. C, reticulations of lateral side of cephalothorax. D, reticulations of 'forehead', showing pair of hair-like sensilla and pair of pores, dorsal to left. E, legs 2–4, lateral view. F, detail of coxal spinulation of a right swimming leg, proximal to left. G, site of absent inner seta (arrow) of first endopodal segment of right leg 1. Scale bars = 100 Mm in A, E; 50 Mm in B–D; 20 Mm in F, H; 10 Mm in G.
Figure 20 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 20. Maemonstrilla okame sp. nov., ovigerous female paratype (KMNH IvR 700 220), Sesoko Island, 2.v.1996, right legs 1–4, setules omitted and setae cut short. A, leg 1, anterior. B, leg 2 and intercoxal sclerite, posterior. C, leg 3, anterior. D, outer distal exopodal seta of leg 3. E, leg 4, anterior. Scale bar = 0.1 mm.
Figure 28 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 28. Maemonstrilla turgida (A. Scott, 1909) comb. nov., syntype, 'Siboga' Expedition sta. 142 (ZMA Co. 201478), most longer setae cut short in drawings, setules almost entirely lost. A, habitus. B, right antennule, ventral view, setal designations after Grygier & Ohtsuka (1995: fig. 6); dotted 4v3-seta missing, but drawn in based on its presence in left antennule. C, right leg 2, endopod. D, loose, broken-off exopod of leg 2, 3 or 4. E, rami of left legs 3 (above) and 4 (below), anterior view. F, basis and rami of right leg 3, anterior view. G, rami of right leg 4, anterior view. H, legs 5 and genital compound somite, lateral view. I, telson and caudal rami, lateral view. Scale bars = 0.5 mm in A; 0.1 mm in B; 0.2 mm in C–I.
Figure 27 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 27. Maemonstrilla turgida (A. Scott, 1909) comb. nov., female (KMNH IvR 700 225), Sesoko Island, 31.viii.1989. A, left leg 1, posterior. B, intercoxal sclerite of legs 1, anterior. C, right leg 2, anterior. D, left leg 3, posterior. E, outer apical exopodal seta of left leg 3. F, right leg 4, anterior. G, right leg 5, medial view. H, compound genital somite, lateral view, anterior to left, showing prominence at anterior base of ovigerous spines (latter cut short). In A, C, D, F and G, setules omitted, some setae cut short. Scale bars = 0.2 mm in A–D, F; 0.1 mm in E, G, H.
Figure 25 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 25. Maemonstrilla turgida (A. Scott, 1909) comb. nov., females (SO lab), Sesoko Island, 7.vii.1989, SEM. A, cephalothorax, lateral view. B, oral papilla (o), scars, pores (arrows) and base of antennule (a). C, striations of cephalothorax and two left-hand pores (arrows) behind oral papilla. D, ovigerous spines with attached eggs overlying two intercoxal sclerites. E, protopod of leg 4, lateral view showing patches of denticles, arrows bounding region enlarged in F. F, detail of E. G, detail of outer apical exopodal seta of leg 2. Scale bars = 200 Mm in A; 100 Mm in B, D, E; 5 Mm in C; 10 Mm in F, G.
Figure 11 in A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding
Figure 11. Maemonstrilla polka sp. nov., female paratype (slide-mount of legs, KMNH IvR 700 216), south coast of Ishigaki Island, 30.iv.1994, legs 1–4, showing diagnostic red spots and invaginations or vestigial buttons replacing proximal inner endopodal seta of each leg (arrows), setules omitted and some setae cut short. A, right leg 1, anterior. B, left leg 2, posterior. C, outer apical exopodal seta of left leg two (see also Fig. 12D). D, right leg 3, anterior. E, left leg 4, posterior. Scale bar = 0.2 mm in A, B, D, E; 0.1 mm in C.
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