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12 results for “Racekiela”
Figure 9 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 9. Tree topology of rDNA region (ITS1-5.8-ITS2) from freshwater sponges, obtained by Bayesian Inference (MrBayes) and Maximum Likelihood (RAxML). The number at each node represents the BI Posterior Probability (%), follow by ML Bootstrap Values; only values over 50% were included. The GenBank sequence accession code was included after each species name. The branches separating different genera are coded with different colours.
Figure 3 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 3. Racekiela cresciscrystae sp. nov. paratype localities at Villa del Carbón River. (a) and (b.) Sampling sites of the new species shown by arrows. (c) Encrusting live specimen, lime-green colour in underwater photography. (d) Lobate surface of paratype in live.
Figure 1 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 1. Map showing Villa del Carbón River at Estado de Mexico, Mexico where Racekiela cresciscrystae sp. nov. were found (1). Dots show the places where the samplings were undertaken. The distribution of Racekiela montemflumina Carballo et al. (2018) (2) and R. ryderii (Potts 1882) (3) is also shown.
Figure 7 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 7. SEM images of gemmuloscleres of holotype CNPGG‒2331 Racekiela cresciscrystae sp. nov. (a) Birotule with smooth shaft, one with very rare spiny shaft. (b) Different rotules showing flat to umbonate details. (c Various pseudobirotules shapes. (d) Pseudobirotules. II (e) Pseudobirotules tips.
Figure 2 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 2. Racekiela cresciscrystae sp. nov. type locality. (a) Villa del Carbón sampling site with arrows showing the place where the sponge was found. (b) Paratype in a dried state, with visible oscular openings. (c) and (d) Live specimens' underwater photography, holotype and paratype.
Figure 4 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 4. Cross section throughout the sponge body in light micrographs. (a) Ectosomal tangential megascleres irregularly scattered, with upright oxeas protruding outside the surface. (b) Choanosomal skeletal network.
Figure 6 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 6. SEM images of megascleres of holotype CNPGG‒2331 Racekiela cresciscrystae sp. nov. (a) Spined oxea and detail of tips. (b) Oxeas not spined. (c) Acanthoxea malformation. (d) Spicular set for size comparison.
FIGURE 1 in Racekiela andina sp. nov. (Spongillida: Spongillidae): first report of a freshwater sponge from the Venezuelan Andes
FIGURE 1. Racekiela andina sp. nov. in vivo et in situ, and dry gemmules. (A) Holotype (CLEI–ULA 11/1-2) attached to a rock, growing in an encrusting and lobate fashion (Photograph by Karla Aguilar). (B) Dry gemmules showing the foramen (lower image) and covered in megascleres.
FIGURE 2 in Racekiela andina sp. nov. (Spongillida: Spongillidae): first report of a freshwater sponge from the Venezuelan Andes
FIGURE 2. SEM micrographs of spicules and a gemmule cross section. (A) Acanthoxeas. (B) Tri-layered gemmular theca. Radially embedded gemmoscleres can be seen. (C) Shorter gemmoscleres: birotules. Note the processes extending the axis in the third and fourth birotules to the right. (D) Longer gemmoscleres: pseudobirotules. The left-most spicule is a light micrograph. Both (C) and (D) show spicules deviating from the common types (far-right).
Figure 8 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 8. SEM images of spicules of paratype CNPGG-2027, (a) Spined oxea and detail of tips. (b) Different rotules (c) Rotule. (d) Various pseudobirotules shapes, (e) Rotule. (f), (g) Pseudobirotules II.
Figure 5 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 5. SEM micrographs of gemmule from holotype CNPGG‒2331 Racekiela cresciscrystae sp. nov. (a) Spherical gemmule with shattered foramen, and top view of rotules. (b) Detail of gemmule surface, with birotules (marked by arrows) and pseudobirotules. (c) Cross section of gemmule filled in with thesocytes and tri-layered theca. (d) Detail of tri-layered theca and foramen in a cross section gemmule (shattered at the upper side). (e) Detail of theca with irregular chambers (upper side of frame), thesocytes and pseudobirotulates going outside the surface (lower right side). (f) Detail of foramen taken from the shatter theca.
Figure 10 in On the genus Racekiela in Mexico: molecular and morphological description of Racekiela cresciscrystae n. sp.
Figure 10. Morphological comparison of birotules of R. ryderii (image from Manconi and Pronzato 2002, left; Volkmer-Ribeiro and Traveset 1987, right), R. sheilae (from Volkmer-Ribeiro et al. 1988), R. cavernicola (from Volkmer-Ribeiro et al. 2010), R. montemflumina (from Carballo et al. 2018), R. andina (from Hernández and Barreat 2017), and R. cresciscrystae sp. nov.
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