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739 results for “Barnacle”
FIGURE 8 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 8. Megabalanus zebra (Darwin, 1854) oral appendages from three specimens collected in Chaguaramas, Trinidad. A, labrum; B, detail of labrum (A); C, palp; D, mandible; E, detail of second tooth of mandible (D); F, mandible; G, detail of distal margin of palp (C); H, maxilla I; I, detail of maxilla (H) upper angle; J, detail of mandible (F) showing the 4th and 5th tooth and lower angle; K, maxilla II. A, B and K represent specimen MNRJ 25249; C and G, MNRJ 25245; D and E MNRJ 25255; F, H, I and J, MNRJ 25247. Scale bar = 0.5 mm.
FIGURE 4 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 4. Megabalanus zebra (Darwin, 1854) right parietal plates from a specimen collected from the Progression hull at Chaguaramas, Trinidad (MNRJ 25247). A, external view; B, internal view. al = alae; sh = sheath; rd = radius; c = carina; cl1 = carinolatus 1; cl2 = carinolatus 2. Scale bar = 5 mm.
FIGURE 2 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 2. Specimens of Megabalanus zebra (Darwin, 1854) collected on boat hulls sampled in Trinidad. A and C, specimen from Progression (MNRJ 25244), left lateral and upper view respectively; B, specimens attached to Lepas anatifera (Linnaeus, 1758), collected from Ƒiking IƑ (MNRJ 25258); D, two specimens of M. zebra attached to Amphibalanus amphitrite (Darwin, 1854) from Alcazar; left (MNRJ 25255), right (MNRJ 25254). Scale bar: A, C and D = 0.5 cm; B = 1 cm.
FIGURE 3 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 3. Size structure based on shell basal length of Megabalanus zebra (Darwin, 1854) from specimens sampled in Trinidad and Curaçao (n=41). Three broken shells were not included.
FIGURE 6 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 6. Two specimens of Megabalanus zebra (Darwin, 1854) from a pier piling at Piscadero Harbor, Curaçao. A–F, MNRJ 25256; G–L, MNRJ 25257. A, shell top view; B, shell left lateral view; G and H, outer and inner view of right parietal plates, respectively; C, I and D, J, right scutum outer and inner faces; E, K and F, L, right tergum inner and outer faces. Scale bar: A and B = 1 cm, C- F = 6.5 mm; G, H = 0.7 mm; I-L = 5mm.
FIGURE 1 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 1. Landmark positions and names of scutum and tergum. Megabalanus zebra from Ƒiking IV hull, Chaguaramas, Trinidad (MNRJ 25251). A, inner face of right tergum; B, inner face of left scutum.
FIGURE 5 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 5. Left opercular plates of Megabalanus zebra (Darwin, 1854) (MNRJ 25254) collected from Alcazar at Chaguaramas, Trinidad. A and B, scutum inner and outer face; C and D, tergum inner and outer face. Scale bar = 1 mm.
FIGURE 7 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 7. Megabalanus zebra (Darwin, 1854) cirri from three specimens collected from boat hulls at Chaguaramas, Trinidad. A, cirrus I; B, cirrus II; C, cirrus III; D, cirrus VI; E, F and G, detail of external side of outer rami median segments of cirrus III, IV and VI, respectively. Figures A, B, E, F and G from specimen MNRJ 25245; C and E from MNRH 25248; D from MNRJ 25255. Scale bar: A, B and C = 2 mm; D = 4 mm; E, F and G = 1 mm.
FIGURE 39 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 39. The best scoring maximum-likelihood (ML) tree based on concatenated 12S and cytochrome c oxidase subunit I (COI) datasets. Node labels are supporting values (%) estimated from the neighbor-joining (NJ), maximum-parsimony (MP), and ML methods, respectively. Only the nodes with ±70% support values for all 3 methods are listed. Scale bars indicate the number of expected substitutions per site.
FIGURE 38 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 38. Acasta undulaterga sp. nov. Mandible (A̅C), mandibular palp (D̅G) and labrum (H, I) (Holotype). A, mandible; B, inferior angle; C, upper part; D mandibular palp; E, outer margin; F, basal part; G, serrulate setae on distal lobe; H, labrum; I, teeth on crests. Scale bars in µm.
FIGURE 37 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 37. Acasta undulaterga sp. nov. Maxillae (A̅D) and maxillule (E̅H) (Holotype). A, maxillae; B, terminal parts of maxillae; C, outer edge; D, basal part; E, maxillule; F, straight cutting edge showing 8 cuspidate setae; G, upper half of cutting edge; H, lower half of cutting edge. Scale bars in µm.
FIGURE 35 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 35. Acasta undulaterga sp. nov. Cirrus IV (Holotype). A, cirrus IV; B, setae and tiny denticles on basis enlarged in rectangle area; C, D, teeth on proximal segments of anterior ramus; E, F, intermediate segments of anterior and posterior rami; G, H, terminal segments of anterior and posterior rami. Scale bars in µm.
FIGURE 36 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 36. Acasta undulaterga sp. nov. Cirri V (A̅C), VI (D̅F) and penis (G, H) (Holotype). A, cirrus V; B, intermediate segments of posterior ramus; C, serrate setae on distal segments of anterior ramus; D, cirrus VI; E, intermediate segments of rami; F, terminal segment of posterior ramus; G, penis; H, broken tip. Scale bars in µm.
FIGURE 34 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 34. Acasta undulaterga sp. nov. Cirri I (A̅C), II (D̅F) and III (G̅J) (Holotype). A, cirrus I; B, C, distal segments of anterior and posterior rami; D, cirrus II; E, F, bifid setae on anterior and posterior rami; G, cirrus III; H, I, bifid and serrate setae on posterior and anterior rami; J, intermediate segments of anterior and posterior rami showing setae and tiny denticles enlarged in rectangle area. Scale bars in µm.
FIGURE 22 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 22. Acasta radenta sp. nov. Cirri V (A, B), VI (C, D) and penis (E̅H) (Holotype). A, cirrus V; B, intermediate segments of posterior ramus showing serrulate setae enlarged in rectangle area; C, cirrus VI; D, intermediate segments of rami showing serrulate setae enlarged in rectangle area; E, penis; F, broken tip; G, intermediate part; H, basal part. Scale bars in µm.
FIGURE 11 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 11. Acasta huangi sp. nov. Complete shell, scuta and terga (Holotype). A, rostal view; B, lateral view; C, carinal view; D, apical view showing whole exterior; E, basal view (basis broken); F, external view of scuta (apices broken); G, internal view of scuta (apices broken); H, external view of terga (apices broken); I, internal view of terga (apices broken). Scale bars = 1 mm.
FIGURE 8 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 8. Acasta aspera sp. nov. Maxillae (A̅C), maxillule (D, E) and mandible (F̅H) (Holotype). A, maxillae; B, terminal parts of maxillae; C, inner edges of maxillae; D, maxillule; E, straight cutting margin showing 10 spiniform cuspidate setae; F, mandible; G, inferior angle showing 3 tiny denticles and stout setae; H, upper half showing bifid second tooth. Scale bars in µm.
FIGURE 7 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 7. Acasta aspera sp. nov. Cirri V (A̅C), VI (D̅F) and penis (G̅I) (Holotype). A, cirrus V; B, posterior of protopod, denticles on posterior surface of coxa enlarged in rectangle area; C, 3 pairs of anterior setae on intermediate segments; D, cirrus VI; E, protopod; F, terminal segment of anterior ramus; G, penis; H, basal part of penis, showing rudimentary basidorsal point; I, tip of penis showing setae on tip. Scale bars in µm.
FIGURE 18 in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 18. Acasta radenta sp. nov. Complete shell, scuta and terga (Holotype). A, view from rostrum; B, view from lateral; C, view from carina; D, view from orifice showing whole exterior; E, view from basis; F, external view of scuta (one with apices broken); G, internal view of scuta (one with apices broken); H, external view of terga (one with apices broken); I, internal view of terga (one with apices broken). Abbreviations: MCC, membrane-covered clefts. Scale bars = 1 mm.
FIGURE 27. Acasta sulcata. Cirri I in Descriptions of four new sponge-inhabiting barnacles (Thoracica: Archaeobalanidae: Acastinae)
FIGURE 27. Acasta sulcata. Cirri I (A̅E) and II (F̅I) (ASIZCR000369). A, rami of cirrus I (basal part broken); B, protopod and posterior ramus (anterior ramus broken); C, intermediate segments of anterior ramus; D, serrulate setae on anterior ramus; E, bifid setae on posterior ramus; F, cirrus II, pappose and plumose setae enlarged in rectangle area; G, intermediate segments of posterior ramus; H, bifid and serrulate setae on posterior ramus; I, bifid and serrulate setae on anterior ramus. Scale bars in µm.
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