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1,138 results for “cryptic diversity”
FIGURE 40 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 40. Siphonodictyon occultum, spicules (holotype USNM 1229127, SEM): a, oxeas, grading to strongyloxeas; b, malformations of oxeote points.
FIGURE 37 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 37. Myrmekioderma laminatum, spicules (holotype USNM 1229076, SEM): a, oxeas and modifications; b, acanthoxeas, with one acanthotylote form; c, raphid cluster among acanthoxeas; d, individual raphids.
FIGURE 41 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 41. Xestospongia purpurea, spicules (holotype USNM 1229140, SEM): oxeas, including (thinner) developmental stages, and styloid modifications.
FIGURE 36 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 36. Phorbas aurantiacus, spicules (holotype USNM 1229060, SEM): a, styles; b, acanthostyles I; c, acanthostyles II; d, acanthostyles III.
FIGURE 39 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 39. Niphates arenata, spicules (holotype USNM 1229119, SEM): a, strongyles, including a developmental stage (right); b, toxas, including a raphidoid modification.
FIGURE 35 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 35. Clathria (Thalysias) curacaoensis, spicules (SEM): a, styles; b, (sub)-tylostyles I; c, (sub)-tylostyles II (with spiny heads enlarged); d, acanthostyles; e, regular and raphidiform toxas; f, isocheles I; g, isocheles II (regular and twisted forms).
FIGURE 34 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 34. Clathria (Microciona) campecheae, spicules (SEM): a, choanosomal tylostyle (left) and ectosomal subtylostyles (with heads enlarged); b, acanthostyles; c, palmate isochelas; d, toxa.
FIGURE 33 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 33. Clathria (Microciona) bulbotoxa, spicules (SEM): a, subtylostyles I (choanosomal); b, subtylostyles II (with one rounded end enlarged); c, bulbous and developing (non-bulbous) toxas; c, twisted palmate isochelas.
FIGURE 32 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 32. Wigginsia curlewensis, spicules (holotype USNM 1229005, SEM): a. Ectosomal tylotes, with microspined tyles; b. Acanthostrongyles; c. Acanthostyles I; d. Acanthostyles II; e. Isochele.
FIGURE 25 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 25. Timea diplasterina, spicules (holotype USNM 1228986, SEM): a, tylostyles in two size classes, one deformed tyle magnified; b, two oxyasters (left) and one diplaster (approaching the shape of a spiraster); c, spheroxyaster I, with smooth rays, some branched; d, spheroxyasters II, with microspined rays; e, diplasters.
FIGURE 31 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 31. Cornulum johnstoni, spicules (SEM): a, strongyles (tylotes) with microspinded ends (tyles), three ends magnified; b, palmate isochelas; c, toxas.
FIGURE 10 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 10. Stelletta solidissima, spicules (SEM): a, oxeas; b, triaenes; c, microspined microxeas; microspined strongylasters and oxyasters.
FIGURE 7 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 7. Tetralophophora mesoamericana, histology (holotype USNM 1228906; light microscopy): a, embryo (right) and choanocyte chambers; b, choanocyte chambers enlarged among fragments of calthrops.
FIGURE 21 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 21. Spirastrella mollis, spicules (SEM): a, tylostyles; b, spirasters I; c, spirasters II/amphiasters.
FIGURE 4 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 4. In-situ photographs of new sponge species reported in this contribution (measurements in parentheses are picture widths): a, Wigginsia curlewensis (8 cm); b, Phorbas aurantiacus (10 cm); c, Myrmekioderma laminatum (12 cm); d, Niphates arenata (10 cm); e, Siphonodictyon occultum (10 cm); f, Xestospongia purpurea (8 cm); g, Aplysina sciophila (20 cm).
FIGURE 29 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 29. Rhaphidhistia belizensis, spicules (holotype USNM 1228992, SEM): a, oxeas, with styloid and strongyloid modifications; b, spirasters I; c, spirasters II; d, spirasters III.
FIGURE 20 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 20. Spirastrella coccinea, spicules (SEM): a, tylostyles; b, spirasters, with transitions to amphiasters.
FIGURE 2 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 2. The most common cryptic habitats studied in the Carrie Bow Cay vicinity (measurements in parentheses are picture widths): a, lower surface of platy coral rock showing the characteristic red foraminiferan Homotrema rubrum, calcareous serpulid polychaete tubes, and two encrusting sponges, Clathria (Thalysias) venosa (left) and Clathria (Thalysias) curacaoensis (10 cm); b, wall inside a forereef framework cave, showing the massive Smenospongia cf. echina (yellow) and Topsentia bahamensis, and encrusting Clathria (Microciona) bulbotoxa (17 cm); c, ceiling of the drowned karst cave in the barrier reef lagoon near Columbus Cay, about 20 m away from the entrance ("blue hole"), showing cemented (mostly dead) serpulid tubes, a branching form of Geodia gibberosa (center) and a few knobby specimens of Gastrophanella cavernicola (far left and right; 20 cm); d, broken-up rock from a forereef cave bottom, showing deserted polychaete borings that are colonized by Cryptosyringa membranophila specimens (6 cm); e, broken-up coral rock showing chambers of excavating sponge Cliona cf. mucronata (7 cm); f, Queen conch (Strombus gigas) shell discarded by local fishermen are a common cryptic habitat on the shallow reef (the slot cut by machete near the apex (arrow) to remove the conch assures good ventilation inside the shell); this shell is colonized outside by Chondrilla caribensis, which occurs fully light exposed as well as in darkness (20 cm); g, peat cave (undercut) in the Twin Cays mangrove, the wall covered by Scopalina ruetzleri (80 cm).
FIGURE 16 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 16. Cliona sp., spicules (SEM): a, tylostyles, head shapes enlarged; b, microspined microrhabds.
FIGURE 1 in Diversity of sponges (Porifera) from cryptic habitats on the Belize barrier reef near Carrie Bow Cay
FIGURE 1. Map of Carrie Bow Cay (Belize) research area showing investigated locations: Carrie Bow Cay and Curlew bank, sites of shallow, platy coral rubble and forereef framework caves, Twin Cays mangrove island with undercut beat banks, and Columbus Cay, location of a drowned karst cave with sinkhole entrance ("blue hole.")
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