Bryozoan framework composition in the oddly shaped reefs from Abrolhos Bank, Brazil, southwestern Atlantic: taxonomy and ecology Author Ramalho, Laís V. Author Taylor, Paul D. Author Moraes, Fernando Coreixas Author Moura, Rodrigo Author Amado-Filho, Gilberto M. Author Bastos, Alex C. text Zootaxa 2018 2018-09-20 4483 1 155 186 journal article 29515 10.11646/zootaxa.4483.1.6 b9453839-5f43-4081-a642-f7bb30caf894 1175-5326 1437570 05A08470-9473-4147-B54B-AB0C90173572 Metrarabdotos aff. jani Winston, Vieira & Woollacott, 2014 ( Fig. 3A ) aff. Metrarabdotos jani Winston et al. , 2014 : p. 198, fig. 38. Material examined. Abrolhos Bank , Bahia State, Brazil : MNRJ-Bry1345, Parcel dos Abrolhos , 4 m depth, February 2014 , col. R. Moura. G. Amado-Filho & A. Bastos. Short description. Fragments of encrusting colonies with zooids disposed quincuncially. Frontal wall tuberculate with large and almost circular areolar pores. Secondary orifice circular with a small U-shaped sinus; a simple, elongated and curved avicularium present lateral to the orifice. Ovicell not observed. Geographic distribution . Bahia, Espírito Santo and Rio de Janeiro states ( Canu & Bassler 1928a ; Marcus 1955 ; Santana et al . 2009 ; Winston et al . 2014 ; Almeida et al . 2017 ; Bastos et al . 2018 ; present study). Remarks. Winston et al . (2014) described Metrarabdotos jani from Rio de Janeiro State and mentioned two characteristic features of the ovicell: the absence of pores on the ooecial surface and the presence of more than a single line of areolar pores. The specimens from Abrolhos are very similar to M. jani but no ovicells have been observed. Since the main diagnostic taxonomic features are the ovicells, we identify the studied material as M. aff. jani . TABLE 1. Bryozoan species list from Abrolhos Bank, Brazil, with the distribution and frequency of the 20 species recorded along the three depths sampled from drill cores. I: inside the core; E: external on the surface of the core; Bold = new species and/or new record for Abrolhos Bank; * species record needs re-examination (from Almeida et al . 2015a); # new data from vouchers deposited in the Bryozoan Collection at Museu Nacional-UFRJ.
Species Core Frequency (%) References/Vouchers
Position 4 m 15 m 25 m
Aetea arcuata Winston & Hayward, 2012 Vieira et al . 2016; # MNRJ-Bry328
Alderina smitti Osburn, 1950 Almeida et al . 2015a
Arthropoma cecilii (Audouin, 1826) I, E 0 25 0 Bastos et al . 2018; Present Study
Beania hirtissima (Heller, 1867) Almeida et al . 2015a
Calyptooecia conuma Almeida & Souza, 2014 Almeida et al. 2015a
Canda retiformes Pourtales, 1867 # MNRJ-Bry326
Catenicella uberrima Harmer, 1957 # MNRJ-Bry333
Cellaria sp. # MNRJ-Bry332; 697
Celleporaria atlantica (Busk, 1884) I, E 100 100 100 Almeida et al. 2015a; Reis et al . 2016 as C. albirostris ; # MNRJ-Bry335; Bastos et al . 2018; Present Study
Celleporaria schubarti (Marcus, 1939) Almeida et al. 2015a
Crassimarginatella winstonae n. sp. I 0 25 0 Bastos et al . 2018, as C . aff. tuberosa ; Present Study
Crisia sp. I 0 50 67 Bastos et al . 2018; Present Study
Didymosella pluma Cook & Chimonides, 1981 Almeida et al . 2015a
Exechonella sp. I, E 25 25 0 Bastos et al . 2018; Present Study
Gemelliporina glabra (Smitt, 1873) I 0 0 100 Almeida et al . 2015a; Bastos et al . 2018; Present Study
Gigantopora lyncoides Ridley, 1881 Almeida et al . 2015a
Hemismittoidea asymmetrica n. sp. I, E 0 25 0 Bastos et al . 2018, as Hemismittoidea sp. nov. ; Present Study
Hippaliosina imperfecta (Canu & Bassler, 1928) I, E 25 50 33 Bastos et al . 2018; Present Study
Hippopodina pulcherrima (Canu & Bassler, 1928a) Almeida et al . 2015a
Hippoporina sp. 2 * Almeida et al . 2015a
Hippothoa flagellum Manzoni, 1870 * Almeida et al . 2015a
Hippotrema fissurata Almeida & Souza, 2014 Almeida et al . 2015a
Labioporella tuberculata Winston et al. , 2014 I, E 0 25 33 Bastos et al . 2018; Present Study
Licornia diadema (Busk, 1852) # MNRJ-Bry331
Metrarabdotos aff. jani Winston et al ., 2014 I, E 50 0 33 Bastos et al . 2018; Present Study
Metrarabdotos sergipensis Santana et al ., 2009 Almeida et al . 2015a
Metrarabdotos sp. I 0 0 67 Bastos et al . 2018; Present Study
Microporella ciliata (Pallas, 1766) * Almeida et al . 2015a
Microporella cucullata Canu & Bassler, 1928 Almeida et al . 2015a
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