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462 results for “Calcarea”
Fig. 20 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 20. Species richness in the Adriatic Sea divided by sectors.: 1–9 species;: 10–17 species;: 18–26 species.
Fig. 19 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 19. Maximum likelihood tree based on partial 28S rDNA sequences of Calcaronea. Bayesian posterior probabilities (PP) and bootstrap values (BS) are given near the branches (PP/BS; when>0.50). Adriatic specimens are written in bold. Adriatic specimens obtained in this study are marked with an asterisk. The detached tree shows the only difference in the topology of the ML and Bayesian analyses.
Fig. 18 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 18. Maximum likelihood tree based on ITS1-5.8S-ITS2 rDNA sequences of Calcaronea. Bayesian posterior probabilities (PP) and bootstrap values (BS) are given near the branches (PP/BS; when>0.50).
Fig. 17 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 17. Maximum likelihood tree (ML) based on partial 28S rDNA sequences of Calcinea. Bayesian posterior probabilities (PP) and bootstrap values (BS) are given near the branches (PP/BS; when>0.50). Adriatic species are written in bold. Adriatic specimens obtained in this study are marked with an asterisk.
Fig. 16 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 16. Maximum likelihood (ML) tree based on ITS1-5.8S-ITS2 rDNA sequences of Calcinea. Bayesian posterior probabilities (PP) and bootstrap values (BS) are given near the branches (PP/BS; when>0.50). Adriatic specimens are written in bold; *Adriatic specimens obtained during this study; **Mediterranean specimens of Borojevia cerebrum; ***Brazilian specimens of Clathrina conifera.
Fig. 13 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 13. Paraleucilla dalmatica sp. nov., holotype (IRB-SD5 = UFRJPOR 8346). A. Cortical diactine (scale bar = 50 µm). B. Cortical microdiactine (scale bar = 20 µm). C–D. Cortical tetractines. E. Cortical triactine. F–H. Subatrial triactines. I–K. Subatrial tetractines. L–M. Atrial tetractines. Scale bar C–M = 100 µm.
Fig. 2 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 2. Ascaltis reticulum (PMR 13739 = UFRJPOR 6870). A. Specimen in situ. B. Section showing the perpendicular arrangement of diactines. C. Regular triactines. D. Regular tetractine. E. Apical actine of a tetractine covered with short spines. F. Diactine.
Fig. 1 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 1. Map of the Croatian coast. Studied locations along the coast are marked with gray circles and numbers. 1. Near Selce. 2. Island of Pag. 3. Near Zadar. 4. Island of Blitvenica. 5. Near Split. 6a–b. Island of Čiovo. 7. Island of Brač. 8. Vrulja Cove. 9. Port of Ploče. 10. Prapratno Cove. 11. Near
Fig. 5 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 5. Borojevia croatica sp. nov., holotype (PMR 13740 = UFRJPOR 6864). A. Specimen in situ. B. Tangential section. C. Tripod. D. Triactines. E. Tetractine. F. Apical actine of a tetractine ornamented
Fig. 12 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 12. Paraleucilla dalmatica sp. nov., holotype (IRB-SD5 = UFRJPOR 8346). A. Specimen in ethanol. B. Cross section. C. Cortex. D. Detail of the cortex showing the tufts of diactines (white arrow = trichoxeas; black arrow = diactine). E. Choanosome with the outer and inner regions. F. Atrial skeleton.
Fig. 11 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 11. Leucandra spinifera sp. nov., holotype (IRB-SG3 = UFRJPOR 8348). A–B. Cortical diactines (scale bar = 200 µm). C. Microdiactine (scale bar = 20 µm). D. Detail of the spines of a microdiactine (scale bar = 10 µm). E–F. Cortical triactines. G. Choanosomal triactine. H–I. Choanosomal tetractines. J–L. Atrial triactines. M. Atrial tetractine. Scale bar E–M = 100 µm.
Fig. 3 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 3. Ascandra spalatensis sp. nov., holotype (PMR 17806 = UFRJPOR 7540). A. Specimen in ethanol. B. Tangential section. C. Triactines. D. Tetractines. E. Apical actine of a tetractine.
Fig. 4 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 4. Borojevia cerebrum (IRB-CLB33 = UFRJPOR 7539). A. Specimen in ethanol. B. Tangential section. C. Tripods. D. Triactines. E. Small tetractine. F. Large tetractine. G. Apical actine of a tetractine ornamented with spines.
Fig. 7 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 7. Clathrina primordialis (IRB-CLB3 = UFRJPOR 6863). A. Specimen in situ. B. Tangential section. C. Triactines with variable sizes and shapes.
Fig. 15 in Adriatic calcarean sponges (Porifera, Calcarea), with the description of six new species and a richness analysis
Fig. 15. Sycon ancora sp. nov., holotype (PMR 17809 = UFRJPOR 8345). A. Cortical diactine. B–C. Anchor-like tetractines. D–E. Triactines of the cones. F–H. Tubar triactines. I. Subatrial triactine. J. Atrial triactine. K. Atrial tetractine. Scale bar D–K = 100 µm.
FIGURE 2 in First occurrence of the genus Paraleucilla (Calcarea, Porifera) in the Atlantic Ocean: P. m a g n a sp. nov.
FIGURE 2. External morphology of Paraleucilla magna sp. nov. A — Sponge in situ; B — Preserved holotype; C — Detail of osculum and atrial cavity of holotype.
FIGURE 1 in First occurrence of the genus Paraleucilla (Calcarea, Porifera) in the Atlantic Ocean: P. m a g n a sp. nov.
FIGURE 1. Distribution of Paraleucilla magna sp. nov. 1 — Type locality, Praia Vermelha; 2 — Cagarras Archipelago; 3 — Arraial do Cabo (Rio de Janeiro State); 4 — Alcatrazes Archipelago (São Paulo State).
Figure 7 in Revalidation of Leucetta floridana (Haeckel, 1872) (Porifera, Calcarea): a widespread species in the tropical western Atlantic
Figure 7. Box-and-whisker plot (maximum and minimum size; upper and lower quartiles and median) of spicule size of Leucetta spp. A, triactine I length; B, triactine I width; C, triactine II length; D, triactine II width; E, tetractine I length; F, tetractine I width; G, tetractine II length; H, tetractine II width. Leucetta floridana (Caribbean), Z Leucetta floridana (Brazil), Leucetta sp., Leucetta microraphis.
Figure 5 in Revalidation of Leucetta floridana (Haeckel, 1872) (Porifera, Calcarea): a widespread species in the tropical western Atlantic
Figure 5. Leucetta floridana from the Caribbean (UFRJPOR 5360). A, L. floridana in situ (photo: S. Zea). B, transversal section of the cortex and choanosome; C, transversal section of the choanosome and atrium; D, triactine I; E, triactine II and the small triactines I; F, tetractine I; G, detail of the apical actine of tetractines I protruding into the atrium; H, tetractine II and several triactines I and tetractines I. Scale bars: A = 1 cm; B–H = 100 Mm.
Figure 1 in Revalidation of Leucetta floridana (Haeckel, 1872) (Porifera, Calcarea): a widespread species in the tropical western Atlantic
Figure 1. Sampling sites. Caribbean: 1 – Bocas del Toro (BDT), 2 – San Andrés Island (SAN), 3 – Urabá (URA); Brazil: 4 – Ceará (CEA), 5 – Rio Grande do Norte (RGN), 6 – Rocas Atoll (RAT), 7 – Fernando de Noronha Archipelago (FNO), 8 – Abrolhos Archipelago (ABR); Pacific: 9 – Australia (GBR), 10 – New Caledonia (NCA).
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