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Lepidochitona Stock Photos and Images
RMB4TREN–Common chiton Lepidochitona cinerea Ischnochitonidae very attractive colour form in a rockpool UK
RFFA0KTY–Chiton Lepidochitona cinerea on rocks at coast. A strange mollusc known as a chiton showing articulated plates of exoskeleton
RMCRNDW5–Common chiton (Lepidochitona cinerea: Ischnochitonidae), an unusual blue form in a rockpool UK
RMW80245–Common chiton (Lepidochitona cinerea) photographed against a white background in mobile field studio. Filey Brigg, Yorkshire, UK. May.
RMMN07KP–. English: Illustrated Index of British Shells. Plate X. 1 Hyalæa trispinosa Diacria trispinosa 2 Spirialis Flemingii Limacina retroversa 3 Spirialis Macandrei Limacina retroversa 4 Spirialis Jeffreysii Limacina retroversa 5 Chiton fascicularis Acanthochitona fascicularis 6 Chiton gracilis Acanthochitona crinita 7 Chiton discrepans Acanthochitona discrepans 8 Chiton Hanleyi Hanleya hanleyi 9, 10 Chiton marmoreus Tonicella marmorea 11 Chiton lævis Callochiton septemvalvis 12 Chiton ruber Tonicella rubra 13 Chiton cinereus Lepidochitona cinerea 14 Chiton albus Stenosemus albus 15,
RM2F3663J–CHITON Lepidochitona cinerea and Barnacles (Elminius modestus) Ballyhenry Point, Strangford Lough, County Down, Credit:Robert Thompson / Avalon
RMRHMYWX–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 300 D. J. EERNISSE. Figure 8. Sections (0.5 Aim thick) of the hermaphroditic gonad of one specimen of L cavema. Explana- tion of symbols: im = immature oocytes; mt = slightly more mature oocytes (still not full size); ts = testicular lobule; sp = mature sperm. Scale bar: (a) = 25 ^m; (b, c) = 10 jim. For example, the suggestion by Christiansen and Fenchel (1979) that the prevalence of brooding in small animals is due to a smaller size at metamorphosis does not hold for Lepidochitona. Size at metamorphosis of brooders is equa
RMRHMCME–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HULL CUPULES OF CHITON EGGS 273. Figures 5-8: Scanning electron micrographs of fertilized eggs of Lepidochitona dentiens. Figure 5. Fertilized egg of L. dentiens demonstrating closed cupules. Scale bar = 40 ^m. Figure 6. Fertilized egg of L. dentiens with some cupules removed. No sperm are found inside cupules. Note sperm penetrating hull between cupules (asterisks). Scale bar = 40 ^m. Figure 7. Fertilized egg of L. dentiens showing sperm in intercupule area (arrows). Scale bar = 20 ^m. Figure 8. Sperm penetration of L denli
RMRHMCJT–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HULL CUPULES OF CHITON EGGS 275. Figure 14. Photograph of eggs of Lepidochitona femaldi and Mopalia ciliata centnfuged at 400 G's on Percoll gradients in pyrex tubes. A. A/, ciliata eggs after 2 min centrifugation. B. M. ciliata eggs after 10 min centrifugation. C. L. fernaldi eggs after 10 min centrifugation. naldi, and L. caverna, I could only resolve a single granule in the acrosome. This could explain the lack of sperm penetration of the hull except in the region of micropores in L. fernaldi and L. dent tens (Buckland-Ni
RMRHMYY0–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 294 D. J. EERNISSE. Figure 7. Larvae near stage of hatching as imaged with SEM in (a) Lepidochitona hartwegii (approx. 2 days old, fixed approximately 12 hours after synchronous hatching of a culture from one free-spawning female); (b) L cavema (approx. 7 days old); L thomasi (approx. 9 days old); and (d) L fernaldi (approx. 9 days old). Explanation of symbols: pr = prototroch; at = apical tuft; ft = foot; vr = valve rudiments. Scale bar: (a-d) = 50 ^m. in time of hatching was observed in any of the species. In several cultu
RMRHMYYW–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. REPRODUCTIVE PATTERNS IN LEP1DOCH1TONA 293. Figure 6. Eggs of six species of Lepidochitona as imaged with SEM. All eggs were dissected from ani- mals with mature gonads but. except for a slightly smaller egg diameter, appear very similar to eggs that are spawned. The eggs correspond to (a) close-up of L hartwegii egg hull; (b) L. berryana; (c) L. caverna; (d) L dentiens; (e) L thomasi; and (f) close-up of L. femcddi egg hull surface. Scale bar: (a, f) = 20 /jm. (b) = 63 /im, (c) = 48 ^m, (d) = 54 ^m. and (e) = 51 fim. distin
RMRHMCKA–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 274 J. BUCKLAND-NICKS. Figure 9. S.E.M. of closed hull cupule (HC) of Lepidochitona fcrnaldi egg. showing reduction typical of brooders. Regular series of micropores is visible in intercupule area (arrowheads). Scale bar = 20 ^m. Figure 10. S.E.M. ofL.fernuldi egg showing elongate microvillus (arrow), extending from one of a series of micropores in the intercupule region (arrowheads). Scale bar = 2 ^m. Figure 11. S.E.M. of Chaetopleiira apiculaia egg showing spinous hull. Scale bar = 100 i*m. Figure 12. S.E.M. of spine of ma
RMRHN7AH–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 512 W. RUSSELL lir.XTER AND STEPHEN C BROWN 2000r 1000 500 I 300 £ 200 k.CHAETOPLEURA ^=^ • -o UJ 100 50 30 400 200 100 50 30 20 10 6L 16 17 18 19 20 2! 22 23 NUMBER OF GILLS B. LEPIDOCHITONA 24 25 26. J I I 1 1 —i- 14 15 16 NUMBER OF GILLS FIGURE 2. 17 18 19 20 21. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole,
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3" Ui. ii) L. caverna SC-1 k 10 15 20 L. fernaldi SJ ,Liillilili» ui 5 10 15 20 5 10 15 20 Length (mm) I = all individuals measured | = brooding individuals Figure 5. Size frequencies in Lepidochitona berryana. L thomasi. L. caverna, and L. fernaldi as length in mm, assigned to the nearest whole mm size class (see text). Sample statistics (given as in Fig. 4 leg- end) are as follows: (5a) 38; 7.6 ± 2.9; 14.1; (5b) all individuals: 341; 10.4 ±2.7; 18.5; brooders only: 57; 11.3 ±3.1; 18.5; (5c) 68; 5.7 ± 1.3; 8.4; (5d) a Stock Photo](https://c8.alamy.com/comp/RHN00B/the-biological-bulletin-biology-zoology-biology-marine-biology-3quot-ui-ii-l-caverna-sc-1-k-10-15-20-l-fernaldi-sj-liillilili-ui-5-10-15-20-5-10-15-20-length-mm-i-=-all-individuals-measured-=-brooding-individuals-figure-5-size-frequencies-in-lepidochitona-berryana-l-thomasi-l-caverna-and-l-fernaldi-as-length-in-mm-assigned-to-the-nearest-whole-mm-size-class-see-text-sample-statistics-given-as-in-fig-4-leg-end-are-as-follows-5a-38-76-29-141-5b-all-individuals-341-104-27-185-brooders-only-57-113-31-185-5c-68-57-13-84-5d-a-RHN00B.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3" Ui. ii) L. caverna SC-1 k 10 15 20 L. fernaldi SJ ,Liillilili» ui 5 10 15 20 5 10 15 20 Length (mm) I = all individuals measured | = brooding individuals Figure 5. Size frequencies in Lepidochitona berryana. L thomasi. L. caverna, and L. fernaldi as length in mm, assigned to the nearest whole mm size class (see text). Sample statistics (given as in Fig. 4 leg- end) are as follows: (5a) 38; 7.6 ± 2.9; 14.1; (5b) all individuals: 341; 10.4 ±2.7; 18.5; brooders only: 57; 11.3 ±3.1; 18.5; (5c) 68; 5.7 ± 1.3; 8.4; (5d) a Stock Photo")
RMRHN00B–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 3" Ui. ii) L. caverna SC-1 k 10 15 20 L. fernaldi SJ ,Liillilili» ui 5 10 15 20 5 10 15 20 Length (mm) I = all individuals measured | = brooding individuals Figure 5. Size frequencies in Lepidochitona berryana. L thomasi. L. caverna, and L. fernaldi as length in mm, assigned to the nearest whole mm size class (see text). Sample statistics (given as in Fig. 4 leg- end) are as follows: (5a) 38; 7.6 ± 2.9; 14.1; (5b) all individuals: 341; 10.4 ±2.7; 18.5; brooders only: 57; 11.3 ±3.1; 18.5; (5c) 68; 5.7 ± 1.3; 8.4; (5d) a
RMRHN015–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. li L.dentiens BC Jin 10 L.hartwegii PP 30 40 10 Length (mm) ..l.ll.l .llllll.. 20 Figure 4. Size frequencies in Lepidochitona dentiens and L. hart- wegii as length in mm, assigned to the nearest whole mm size class (see text). Sample statistics (given as n; x ± S.D.; xma,) are as follows: (4a) 145; 12.5 ± 3.2; 27.3; (4b) 304; 9.4 ± 3.3; 22.0; (4c) 55; 8.7 ±2.1; 14.0; (4d)23; 12.2 ±4.0; 18.5; (4e) 105; 16.1 ± 3.0; 23.6; (4f) 50; 25.8 ± 8.6; 39.7. Site abbreviations explained in Figure 1 legend. ported by Heath (1907) (
RMRHN01K–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 292 D. J. EERNISSE >> 20 L.dentiens SJ iijIIIHIjju 10 15 20 L.dentiens BH ..IiIIIWji, .... 5 10 15 20. li L.dentiens BC Jin 10 L.hartwegii PP 30 40 10 Length (mm) ..l.ll.l .llllll.. 20 Figure 4. Size frequencies in Lepidochitona dentiens and L. hart- wegii as length in mm, assigned to the nearest whole mm size class (see text). Sample statistics (given as n; x ± S.D.; xma,) are as follows: (4a) 145; 12.5 ± 3.2; 27.3; (4b) 304; 9.4 ± 3.3; 22.0; (4c) 55; 8.7 ±2.1; 14.0; (4d)23; 12.2 ±4.0; 18.5; (4e) 105; 16.1 ± 3.0
Search Results for Lepidochitona Stock Photos and Images (28)
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