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397 results for “Echinoidea”
FIGURE 1 in Needle in a haystack-genetic evidence confirms the expansion of the alien echinoid Diadema setosum (Echinoidea: Diadematidae) to the Mediterranean coast of Israel
FIGURE 1 Images of live Diadema setosum in the field: A) from Tel Aviv, Israel (32.086358°N, 34.763918°E), on 10.11.2016, at a depth of 6-8 m (Photograph: Adi Gvir; specimen not collected). B) from Tel Aviv, Israel (32.083633°N, 34.762836°E), on 17.06.2017, at depth of 3.5 m (a single spine was retrieved from specimen, deposited at the Steinhardt Museum of Natural History, Tel Aviv University under voucher number SMNH_Ec_25635). Scanning electron microscope images of D. setosum spines from specimen shown in B. C) longitudinal view showing the characteristic diadematoid verticillation; D) transverse section showing the axial cavity and solid wedges of the spine. See also Supplementary materials Fig. S3.
FIGURE 18 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 18. Some common echinoids from northeastern Brazil in their natural habitat. (A) Eucidaris tribuloides on coral reef; (B) Diadema ascensionis on barrier reef; (C) Echinometra lucunter on rhodolith bed; (D) Lytechinus variegatus near seagrass; (E) Tripneustes ventricosus on coral patch; (F-H) Mellita aff. quinquiesperforata, Leodia sexiesperforata and Encope emarginata, respectively, on muddy bottom of sandy beach near hypersaline mangroves.
FIGURE 13 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 13. Morphological characters of Leodia sexiesperforata (UFPB/ECH.1013). (A) Aboral view; (B) Oral view, with small bivalve associated with lunule (arrow); (C) Aboral view of naked test; (D) Oral view of naked test; (E) Detail of peristome; (F) Bidentate pedicellariae; (G) Illustration of miliary spine from Mooi (1989); (H) Apical system.
FIGURE 16 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 16. Morphological characters of Agassizia excentrica (MZUSP, without voucher). (A) Aboral view; (B) Oral view; (C) Lateral view; (D) Aboral view of naked test; (E) Oral view of naked test; (F) Lateral view of naked test; (G) Apical system.
FIGURE 15 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 15. Morphological characters of Moira atropos (MZUSP00280). (A) Aboral view; (B) Oral view; (C) Lateral view; (D) Aboral view of naked test; (E) Oral view of naked test; (F) Lateral view of naked test; (G) Posterior view; (H–J) Illustrations of pedicellariae of M. atropos provided by Chesher (1963); (H) Valve of pedicellaria from floor of ambulacrum; (I–J) Valves of pedicellariae from aboral region. ab: aboral surface; or: oral surface.
FIGURE 7 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 7. Morphological characters of Lytechinus variegatus (UFPB/ECH.32). (A) Aboral view; (B) Oral view; (C–D) Valve of globiferous pedicellariae; (E) Valve of ophicephalous pedicellariae; (F) Valve of tridentate pedicellariae; (G) Valve of triphyllous pedicellariae; (H) Spicules of the tube feet; (I) Aboral view of naked test; (J) Oral view of naked test; (K) Tube foot ossicle; (L) Detail of the apical system; (M) Peristome; (N) Ambulacral plates; (O) Interambulacral plates.
FIGURE 14 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 14. Morphological characters of Encope emarginata (UFPB/ECH.1907). (A) Aboral view; (B) Oral view; (C) Aboral view of naked test; (D) Oral view of naked test; (E) Bidentate pedicellariae; (F–H) Valve of bidentate pedicellariae; (I) Apical system.
FIGURE 1 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 1. Map of South America showing the northeast region of Brazil and oceanic islands. (MA) Maranhão; (PI) Piauí; (CE) Ceará; (RN) Rio Grande do Norte; (PB) Paraíba; (PE) Pernambuco; (AL) Alagoas; (SE) Sergipe; (BA) Bahia; (AR) Atol das Rocas; (FN) Fernando de Noronha; and (AB) Abrolhos Archipelago.
FIGURE 12 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 12. Morphological characters of Mellita aff. quinquiesperforata (UFPB/ECH.1015). (A) Aboral view; (B) Oral view; (C) Aboral view of the naked test; (D) Oral view of naked test; (E) Bidentate pedicellariae; (F–G) Valve of bidentate pedicellariae; (H) Detail of spines from aboral surface; (I) Apical system; (J) Spines from ambitus.
FIGURE 11 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 11. Morphological characters of Echinocyamus grandiporus (UFPB/ECH.1974). (A) Aboral view; (B) Oral view; (C) Aboral view of naked test; (D) Oral view of naked test; (E) Apical disc (F–H) Illustrations of pedicellariae of E. grandiporus provided by Mortensen (1907); (F) Valve of tridentate pedicellariae; (G) Valve of triphyllous pedicellariae; (H) Valve of ophicephalous pedicellariae; (I) Lateral view of naked test.
FIGURE 4 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 4. Morphological characters of Phormosoma placenta (EqMN2341). (A) Aboral view. (B) Detail of apical system; (C) Oral view; (D) Peristome; (E) Ambulacral plates; (F) Interambulacral plates; (G) Valve of tridentate pedicellariae.
FIGURE 8 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 8. Morphological characters of Tripneustes ventricosus (UFPB/ECH.1722). (A) Aboral view; (B) Oral view; (C–D) Valve of globiferous pedicellariae; (E) Valve of ophicephalous pedicellariae; (F) Valve of tridentate pedicellariae; (G) Valve of triphyllous pedicellariae; (H) C-shaped spicules of tube feet; (I) Tube foot ossicle; (J) Aboral view of naked test; (L)) Detail of the apical system; (M) Ambulacral plates; (N) Interambulacral plates.
FIGURE 19 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 19. Ecological aspects of some echinoids from northeastern Brazil. (A) Eucidaris tribuloides parasitized by eulimid gastropod (arrow); (B) Partial view of coastal reef eroded by Echinometra lucunter; (C) Lytechinus variegatus on coral reef exhibiting covering behaviour at night; (D) Dead specimen of Lytechinus variegatus recently preyed upon (arrow) by juvenile Cassis tuberosa; (E) Dissodactylus crab associated with oral surface of sand dollar Encope emarginata on sandy beach; (F) Diseased specimen of Mellita aff. quinquiesperforata; (G) Dead sand dollars (M. aff. quinquiesperforata) on sandy beach after disease outbreak.
FIGURE 3 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 3. Morphological characters of Eucidaris tribuloides (UFPB/ECH.1902). (A) Aboral view; (B) Oral view; (C) Lateral view; (D) Valve of tridentate pedicellariae; (E) Spicules of tube feet; (F) Valve of globiferous pedicellariae; (G) Aboral view of naked test; (H) Oral view of naked test; (I) Tube foot ossicle; (J) Detail of apical system; (K) Detail of peristome; (L) Ambulacral plates; (M) Interambulacral plates.
FIGURE 10 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 10. Morphological characters of Clypeaster subdepressus (UFBA00072). (A) Aboral view; (B) Oral view; (C) Lateral view; (D) Aboral view of naked test; (E) Oral view of naked test; (F) Madreporic plate; (G) Peristome and basicoronal plates; (H) Valve of ophicephalous pedicellariae.
FIGURE 6 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 6. Morphological characters of Echinometra lucunter (UFPB/ECH.33, UFPB/ECH.1514). (A) Aboral view; (B) Oral view; (C–D) Valve of globiferous pedicellariae; (E) Valve of ophicephalous pedicellariae; (F) Valve of tridentate pedicellariae; (G) Tube foot ossicle; (H) Spicules of the tube feet; (I) Aboral view of naked test; (J) Oral view of naked test; (K) Apical system; (L) Ambulacral plates; (M) Interambulacral plates.
FIGURE 2 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 2. Some littoral environments and shallow-water biotopes where echinoids are found in northeastern Brazil. (A) Coral reef; (B) Sandy beach; (C) Rhodolith bed; (D) Macroalgal bank; (E) Fringing reef; (F) Seagrass bed (Halodule wrightii Ascherson); (G) Millepora patch reef.
FIGURE 5 in Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil
FIGURE 5. Morphological characters of Plesiodiadema antillarum (UFPB/ECH.2293). (A–G) and Cassidulus infidus (H–I). (A) Aboral view; (B) Oral view, arrow showing buccal plate; (C) Lateral view; (D–G) Illustrations of pedicellariae of P. antillarum from Mortensen (1904); (D) Valve of large form ophicephalous pedicellariae; (E) Valve of small form ophicephalous pedicellariae; (F) Valve of triphyllous pedicellariae; (G) Valve of tridentate pedicellariae; (H) Aboral view; (I) Oral view.
FIGURE 5 in A new species of Fibularia from Japanese waters with a redescription of F. japonica and F. ovulum (Echinodermata: Echinoidea: Clypeasteroida)
FIGURE 5. Fibularia coffea, SEM images of paratype (NSMT E-10372, Amami-Oshima Island, Kagoshima Prefecture). A, apical system; B, ambulacrum; C, tubercles; D, tubercles viewed obliquely. Abbreviations: gt = glassy tubercle, mt = miliary tubercle, pt = primary tubercle. Other abbreviations as in Fig. 2.
FIGURE 8 in A new species of Fibularia from Japanese waters with a redescription of F. japonica and F. ovulum (Echinodermata: Echinoidea: Clypeasteroida)
FIGURE 8. Live specimens and underwater photographs of collection sites of Fibularia coffea. A, holotype (NSMT E-10371); B, one of the paratypes (NSMT E-10376); C, collection site of holotype at 1 m depth, Ayamaru Cape, Amami-Oshima Island, Kagoshima Prefecture, Japan; D, collection site of one of the paratypes (NSMT E-10372) at 2 m depth, Tsuchi-Hama, Amami-Oshima Island, Kagoshima Prefecture, Japan. Dotted circles indicate the exact collection points.
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International Brain Laboratory public data
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OpenNeuro
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