Find research datasets worth reusing

FIGURE 8. Virtual 3D in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy

FIGURE 8. Virtual 3D isosurface rendering using VGStudio MAX of selected spicules within their skeletal context (A, B) and isolated from it (C, D), 3D-reconstructed from synchrotron radiation-based x-ray micro computed tomography images of the holotype. Virtual isolation (B) and comparative side-to side renderings of megasters (C) and megascleres (D). Micrasters are visualized as small dots, e.g. in the peripheral region in A.

FIGURE 7 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy

FIGURE 7. Phylogenetic consensus trees of COI sequences shown as a direct comparison between A. maximum likelihood (ML) and B. the 50% majority rule consensus phylogram of the Bayesian approach. Numbers indicate bootstrap values (A) and posterior probabilities (B). Some species are represented by different sampling locations as indicated by indices: 1, Limski canal, Croatia; 2, Elba, Italy; 3, Rathlin Island, Northern Ireland; 4, Rovinj, Croatia.

FIGURE 6 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy

FIGURE 6. Morphometric correlations between megasters and megascleres in T. leysae sp. nov. A. Diameter of megasters vs. R/C ratio (ray length to radius of the massive spicule center), including linear fitted graphs. Choanosomal megasters (filled circles, Ch, n=85) are significantly smaller (independent t-test; p<0.001) than cortical megasters (filled triangles, Co, n=227). The same applies to R/C values, which are significantly lower for choanosomal megasters (independent t-test; p<0.001), indicating more solid megasters with shorter rays and/or relatively more solid centers. Both differences are also represented by the linear fitted graphs. B. Length of megascleres plotted vs. width. Main and auxiliary megascleres represent two significantly different size classes, in terms of both length and width (independent ttests, p<0.001).

FIGURE 5 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy

FIGURE 5. Spicule types of T. leysae sp. nov. (A–D; SEM micrographs) in comparison to T. californiana (E–F; drawings modified from Sarà & Corriero 1993, re-evaluated by own light microscopy of spicule preparations from the specimen BMNH 29.8.22.15.). A. Main and auxiliary megascleres. B. The highly variable cortical megasters. C. Choanodermal megasters. D. Micrasters. E. Megasters. F. Micrasters.

FIGURE 1 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy

FIGURE 1. Type locality of T. leysae sp. nov. in the Northeast Pacific, around Ohiat Islet, Barkley Sound, near Bamfield, Vancouver Island, British Columbia, Canada, North America.

FIGURE 3 in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy

FIGURE 3. Skeletal and overall anatomy of T. leysae sp. nov. (resin slice preparation of the holotype). A. Cross section through cortex (Co) and choanosome (Ch); radial megasclere bundles (rMSB) fan out slightly in the peripheral cortex region. B. – C. Details of the cortex (B) and choanosome (C). The cortex appears solid with almost no subdermal lacunae; it is densely filled with megasters, in contrast to the very low megaster density of the choanosome. Auxiliary megascleres (aMS) are present in the cortical megasclere bundle fans and separately or grouped in the choanosome. D. – G. Asters in the cortex and the choanoderm; peripheral micrasters (ma) are associated with the exopinacoderm (D); megasters (MA) dominate the cortex; the average distance between megasters is lower than one megaster diameter (D & E, see Fig. 4); A peripheral cortical layer 200 – 400 µm thick is almost completely free of megasters (D), subcortical lacunae are present near the inner cortical boundary, thus appearing partly free of megascleres (E); the choanoderm is largely free of megasters (E–F) or they show up in clouds (G), with a much lower density compared to the cortex.

FIGURE 2. A– B in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy

FIGURE 2. A– B. True to scale comparison between the habitus of T. leysae sp. nov. (A, paratype) and T. californiana (B; figure modified from Sarà & Corriero, 1993). C. Tethya leysae sp. nov in situ in Barkley Sound. Asterisks indicate stalkless buds. The image is a scan of a diapositive; neither the used film material nor the scanner was color-calibrated; therefore, the colors might deviate from natural colors (image courtesy of S. Leys, Edmonton).

FIGURE 4. Virtual 3D in Description and molecular phylogeny of Tethya leysae sp. nov. (Porifera, Demospongiae, Hadromerida) from the Canadian Northeast Pacific with remarks on the use of microtomography in sponge taxonomy

FIGURE 4. Virtual 3D reconstructions of the cortical skeleton of T. leysae sp. nov. (holotype) imaged using synchrotron radiation-based x-ray micro computer tomography (SR µCT). The massive megasclere bundles reach diameters of up to 500 µm; there is no free space between asters and megasclere bundles as sometimes seen in other Tethya species; patchy aster-free regions are occupied by canals (tissue not visible in spicule-optimized SR µCT, see Nickel et al. 2006a, b). A. – B. Block diagrams of cortex preparations from the holotype (A) and the paratype (B). C. Detail cropped from the paratype (coordinate system in mm). Additional 3D-renderings of the holotype as well as the paratype are available upon request.

FIGURE 3 in Two new species of Aaptos (Demospongiae, Hadromerida) from Brazil (western Atlantic)

FIGURE 3. Distribution frequency of the size-classes of the strongyloxeas of Aaptos hajdui sp. nov. (A. UFPE POR 62; B. UFPE POR 181) and A. potiguarensis sp. nov. (C. UFPE POR 45; D. UFPE POR 46). (n=100). x-axis size in microns; y-axis frequency in number of spicules per size class.

FIGURE 2 in Two new species of Aaptos (Demospongiae, Hadromerida) from Brazil (western Atlantic)

FIGURE 2. Aaptos hajdui sp. nov. A. Holotype (UFPEPOR 62). B. Choanosomal skeleton. C. Detail of the ectosomal skeleton, showing the bouquets near the surface and the ectosomal cavities. D. Strongyloxeas. E. Telescopic and mucronate tips of the strongyloxeas. F. Styles. Scale bars: A = 5 cm. B, C = 500 µm. D = 100 µm. E, F = 50 µm.

FIGURE 1 in Two new species of Aaptos (Demospongiae, Hadromerida) from Brazil (western Atlantic)

FIGURE 1. Map showing the sampling sites in Potiguar Basin, Rio Grande do Norte state (Northeastern Brazil).

FIGURE 4 in Two new species of Aaptos (Demospongiae, Hadromerida) from Brazil (western Atlantic)

FIGURE 4. Aaptos potiguarensis sp. nov. A. Holotype (UFPEPOR 45). B. Choanosomal skeleton. C. Strongyloxeas. D. Styles. Scale bars: A = 5 cm. B = 500 µm. C, D = 100 µm.

opennotspecifiedJun 2010View details →

Fig. 3 a in Two Pione species (Hadromerida, Clionaidae) from the Red Sea: a taxonomical challenge

Fig. 3 a Tylostyle heads of P. cf. lampa. b Tylostyle heads of P. cf. vastifica. c Microrhabds of P. cf. lampa. d Microrhabds of P. cf. vastifica. All elements shown under either supposed species came from a single respective specimen. Numbers next to bars indicate scale lengths in μm

opennotspecifiedJun 2010View details →

Fig. 2 in Two Pione species (Hadromerida, Clionaidae) from the Red Sea: a taxonomical challenge

Fig. 2 Erosion scars by Scanning Electron Microscopy. a Pione cf. lampa. b Pione cf. vastifica. Dashed line around "C" marks pit outline; double- headed arrow at "D" indicates pit main axis

opennotspecifiedFeb 2004View details →

FIGURE 1 in Timea bioxyasterina sp.n., a new species from the Northeastern coast of Brazil (Demospongiae, Hadromerida)

FIGURE 1. Map showing the collecting area, on the tropical Atlantic coast of South America. The type locality is shown in detail, off the coast of the State of Maranhão (Brazil).

opennotspecifiedFeb 2004View details →

FIGURE 3 in Timea bioxyasterina sp.n., a new species from the Northeastern coast of Brazil (Demospongiae, Hadromerida)

FIGURE 3. Timea bioxyasterina sp. nov. (Holotype, MNRJ 7984). Spicules: a. Tylostyles and oxyasters I, II (Scale bar = 10mm); b. Oxyasters I and II (Scale bar = 10mm); c. Oxyaster II and tylaster (in detail; Scale bar = 5mm). d. Tylasters (in detail; Scale bar = 1mm).

Figure A1 in Life-history traits of a common Caribbean coral-excavating sponge, Cliona tenuis (Porifera: Hadromerida)

Figure A1. Daily growth rate (linear extension) of Cliona tenuis during the three observational periods described in this manuscript and under constant competition with Lobophora variegata, Dictyota pulchella, coral, and short and long turf algae (more details of the methodology are explained in the methods section of this manuscript and in González-Rivero et al. 2012). Error bars depict standard error.

Figure 8 in Life-history traits of a common Caribbean coral-excavating sponge, Cliona tenuis (Porifera: Hadromerida)

Figure 8. Size structure of Cliona tenuis populations at: (A) Long Caye Wall and (B) Middle Caye Wall.

Figure 7 in Life-history traits of a common Caribbean coral-excavating sponge, Cliona tenuis (Porifera: Hadromerida)

Figure 7. Temporal variation in recruitment (individuals.plot−1) among periods of evaluation and between study sites. Vertical bars depict standard error.

Figure 5 in Life-history traits of a common Caribbean coral-excavating sponge, Cliona tenuis (Porifera: Hadromerida)

Figure 5. Linear growth of Cliona tenuis measured during the studied period. The timeline is represented as ordinal dates in days of the year. Data points out of the 5th and 95th confidence intervals (bars) are represented by dots, and box indicates the interquartile range. The solid line inside the box represents the median, whereas the dotted line represents the mean.