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7 results for “Clathrinida”
FIGURE 2 in Nicola gen. nov. with redescription of Nicola tetela (Borojevic & Peixinho, 1976) (Porifera: Calcarea: Calcinea: Clathrinida)
FIGURE 2. Photographs taken from the original slide of the holotype (MNRJ 40). A. Apical region. B. Basal region. In each photo a tetractine is indicated by an arrow.
FIGURE 3. Bayesian 50 in Nicola gen. nov. with redescription of Nicola tetela (Borojevic & Peixinho, 1976) (Porifera: Calcarea: Calcinea: Clathrinida)
FIGURE 3. Bayesian 50% majority rule consensus tree (106 trees sampled; burn-in =1000 trees) inferred from the ITS rDNA sequences under the GTR model. Bayesian posterior probabilities (BI) and bootstrap (ML) are given on the branches.
FIGURE 1. Nicola tetela comb. nov. A-B in Nicola gen. nov. with redescription of Nicola tetela (Borojevic & Peixinho, 1976) (Porifera: Calcarea: Calcinea: Clathrinida)
FIGURE 1. Nicola tetela comb. nov. A-B: Live specimens: UFRJPOR 6714 (A) and UFRJPOR 6746 (B) (photos taken by E. Hajdu). C. Specimens after fixation (UFRJPOR 6714, 6723, 6724). D. Tangential section of the skeleton showing choanocytes and porocytes (pc). E. Detail of the apical region of the body. F. Apical actines protruding into the lumen of a tube (arrow pointing to one apical actine). G. Spicules: Triactine (left) and tetractine (right). H – K: SEM images of spicules: H. Large triactine. I. Small triactine. J. Tetractine. I. Apical actine of a tetractine. All skeleton and spicule images were taken from the specimen UFRJPOR 6723.
FIGURE 2 in A new species of the calcareous sponge genus Leuclathrina (Calcarea: Calcinea: Clathrinida) from the Maldives
FIGURE 2. Leuclathrina translucida sp. nov. A: Typical growth form in situ (holotype). The inset shows an opening at the end of an exhalant tube of another specimen, possibly an osculum; B: Specimen (SNSB-BSPG 30280) with a hanging growth form and smaller exhalant tubes. C: Detail of the outer sponge wall of the inhalant region with inhalant openings; C: Detail of the outer sponge wall of the exhalant tubes, showing the hexagonally arranged triactines around the translucent tissue areas (C-D: material fixed in 80 % ethanol); E-G: Section through the sponge wall at different regions of the sponge body; E: In the inhalant region the skeleton consists of several layers of tangential triactines, the choanosome is free of spicules; F: Transition between the inhalant and exhalant region: the choanosome gets thinner and is replaced by a layer of endopinacoderm. G: The thickness of the sponge wall is strongly reduced in the more distal parts of the exhalant tubes. H: Spicules (triactines); I: 3D reconstruction of the skeleton and the choanosome (coloured). Abbreviations: c= canal (inhalant or exhalant); ch= choanosome; enp= endopinacoderm; ex= exterior of the sponge wall; exh= exhalant body part; exp= exopinacoderm; inh= inhalant body part or inhalant opening; sk= skeleton.
FIGURE 3 in A new species of the calcareous sponge genus Leuclathrina (Calcarea: Calcinea: Clathrinida) from the Maldives
FIGURE 3. Histology of L. translucida sp. nov. (SNSB-BSPG 30279), decalcified: A: Section through the sponge wall including the outer skeletal layer, the choanosome and the atrial cavity; B: Detail of an inhalant opening leading to an inhalant canal; C: Detail of the outer skeletal layer, which is delimited by exopinacocytes on the external surface; only few cells occur in the mesohyl of this layer; D: Detail of the choanosome, with spherical choanocyte chambers and canals of the aquiferous system (inhalant or exhalant), the latter is lined by endopinacocytes. E: Choanoderm adjacent to the atrial cavity. The wall of the atrial cavity is lined by endopinacocytes. F: Section through the wall of an exhalant tube, consisting of an external layer of exopinacocytes and an internal layer of endopinacocytes, and a thin mesohyl layer in between (originally with a few spicules). Abbreviations: at: atrial cavity; c: canal (inhalant or exhalant); ch: choanocyte; chc: choanocyte chamber; enp: endopinacoderm; ex: external side of the sponge; exc: exhalant canal; exp: exopinacoderm; inc: inhalant canal; inh: inhalant opening; mc: mesohyl cell; me= mesohyl; sp: dissolved spicule.
FIGURE 1 in A new species of the calcareous sponge genus Leuclathrina (Calcarea: Calcinea: Clathrinida) from the Maldives
FIGURE 1. Sample localities (red dots) of Leuclathrina translucida sp. nov.: A: Location in the Indian Ocean (map generated with SimpleMappr, Shorthouse 2010); B: Location of the Lahviyani Atoll and the Fafuu Atoll in the Maldives; C: Detail of the type locality in the Lahviyani Atoll (1); D: Detail of the sample localities in the Fafuu Atoll. Dive sites: (2) Wallino, (3) Route 66 BIS, (4) Coral Garden, (5) Route 66, (6) Wall Street, (7) M&Ms, (8) Beyrufushi.
FIGURE 4 in A new species of the calcareous sponge genus Leuclathrina (Calcarea: Calcinea: Clathrinida) from the Maldives
FIGURE 4. Phylogenetic position (arrow) of Leuclathrina translucida sp. nov. within Calcinea (midpoint rooted Bayesian phylogeny). Posterior probability (BI) and bootstrap values of the Maximum Likelihood (ML) analysis are given at the nodes, respectively ('-'= node not present in ML tree, '<'= bootstrap values below 50). For undetermined species that probably belong to more recently established genera, the original genus affiliation is provided in brackets, '?' marks a sample of uncertain identification. The organisation of the aquiferous system of the species is provided (see legend in the inset).
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