The Anatomy and Relationships of Troschelia (Neogastropoda: Buccinidae): New Evidence for a Closer Fasciolariid-Buccinid Relationship?
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THE NAUTILUS 123(3):95–105, 2009 Page 95 The anatomy and relationships of Troschelia (Neogastropoda: Buccinidae): New evidence for a closer fasciolariid-buccinid relationship? Alisa R. Kosyan Maria Vittoria Modica A.N. Severtsov Institute of Ecology and Evolution Marco Oliverio Russian Academy of Sciences Dipartimento di Biologia Animale e dell’Uomo 33 Leninski Prospekt “La Sapienza” Rome University Moscow 119071, RUSSIA Viale dell’Universita` 32 [email protected] I-00185 Roma, ITALY [email protected] [email protected] ABSTRACT MATERIALS AND METHODS Analyses of new anatomical and molecular data confirm the Samples for the present study were collected during field taxonomic position of Troschelia berniciensis (King, 1846) work and expeditions to the West Pacific (PANGLAO 2004, within the Buccinidae and provide the framework for a review Philippines, and SANTO 2006, Vanuatu, organized by the of the relationships of the families Fasciolariidae and Buccini- Muse´um national d’Histoire naturelle, Paris), to Panama dae. The morphology of Troschelia Mo¨rch, 1876, is similar to (Neogastropod Workshop 2006, at the Smithsonian Trop- that of other Northern Atlantic and Pacific buccinid genera. ical Research Institute, Panama), the Mediterranean Sea, Anatomical examination of a number of fasciolariid species revealed only a single character, the structure of the proboscis and at other localities, and supplemented by specimens retractor muscles, to be diagnostic of the Fasciolariidae, while provided by Museums (BMNH – Natural History Muse- other characters are shared with the Buccinidae. A molecular um, London, UK, MNHN – Muse´um National d’Histoire phylogeny also confirms a close relationship between the two naturelle, Paris, France, BAU – Museum of Biologia Ani- groups. male e dell’Uomo Department, University “La Sapienza”, Rome, Italy) and colleagues. The taxa listed in Table 1 Additional keywords: Taxonomy, phylogeny, anatomy, Buccini- were used for anatomical studies. Animals were dissected dae, Fasciolariidae and radulae examined using an SEM. Sequence data was newly generated for several species, and supplemented with additional taxa that were obtained from GeneBank (see Table 2). INTRODUCTION Phylogenetic relationships among the more than 200 DNA EXTRACTION, PCR, AND SEQUENCING: Total DNA genera and subgenera included in the gastropod family was extracted following a standard Phenol/Chloroform/ Buccinidae remain quite ambiguous. The northeastern Ethanol protocol (Hillis et al., 1990) with slight modifi- Atlantic monotypic genus Troschelia Mo¨rch, 1876, has cation as previously described by Oliverio and Mariottini been classified by a number of authors (e.g., G.O. Sars (2001) for mollusks. QIAGEN QiAmp Extraction Kit (1878), J. Thiele (1929)) in the family Fasciolariidae, due was used according to manufacturer’s instructions for to the peculiar radula of Troschelia berniciensis (King, extraction of DNA from difficult samples. 1846). However, Bouchet and Ware´n (1985) placed A region of the gene encoding 16SrDNA encompass- Troschelia within Buccinidae, based on the morphology ing the domains IV and V (Gutell and Fox, 1988) was of its lateral teeth, which have multiple, uniform cusps amplified using primers 16SA (5’-CGCCTGTTTATCA- similar to those of some other Buccinidae (Thalasso- AAAACAT-3’) (Palumbi et al., 1991) and 16SH (5’-CC planes Dall, 1908). To elucidate the phylogenetic rela- GGTCTGAACTCAGATCAC-3’) (Espiritu et al., 2001). Amplification conditions were as follows (30–35 cycles): tionships of Troschelia with the families Buccinidae and Fasciolariidae, morphological and anatomical features 94 for 30 sec, 45–50 C for 30 sec, 72 C for 60 sec. were studied, and partial sequences from the mitochon- When a single band was obtained the PCR product was drial 16S rRNA gene were analyzed for Troschelia ber- purified using the Exo-Sap enzymatic method. Purified niciensis as well as for a number of buccinid and products were then double strand sequenced with Big- fasciolariid taxa. Dye v. 2.0 (Applied Biosystems, Foster City, CA, USA) Page 96 THE NAUTILUS, Vol. 123, No. 3 Table 1. Species used in the anatomical study. Family Subfamily Species Locality Voucher number Buccinidae Troschelia berniciensis Station number: 44/2, Sea Area: S38, BMNH 20031298 0 0 (King, 1846) 51 19.2 N, 08 32.2 W, BAU00687 Depth: 95m, Date: 28/05/1975 RRS CHALLENGER Cruise 8/75 Fasciolariidae Peristerninae Turrilatirus turritus Sudan, Red Sea, FEL-93 BAU00691 (Gmelin, 1791) Expedition, Sha’ab Rumi, Stn. 4, N 6, 0.5–1 m, reef-flat brushing, pocilloporids and coral rubble, M/S FELICIDAD Fasciolariidae Peristerninae Pustulatirus mediamericanus Panama, Pacific Ocean, Venado BAU00688 (Hertlein and Strong, 1951a), beach, 8.89 N, 79.59 W, intertidal, Feb. 2006 Fasciolariidae Peristerninae Latirus polygonus Sudan, Red Sea, REDSED–5 BAU00690 (Gmelin, 1791) Cruise, Sanganeb Reef, Stn. RS5–5, N 1, Southern Lagoon, sand and patchy reefs, 2 m, M/S FELICIDAD – BIORES group, Leg. M. Oliverio, M. Taviani, 3 Sep.1993 Fasciolariidae Peristerninae Peristernia nassatula Sudan, Red Sea, REDSED-5 BAU00692 (Lamarck, 1822) Cruise, Sanganeb Reef, Stn. RS5-3, N 1, lagoon plus reef flat, brushing coral rabbish and direct search in situ, 2 Sep. 1993 day – 9 Sep. 1993 night Fasciolariidae Peristerninae Peristernia ustulata Philippines, Pamilacan, BAU00693 (Reeve, 1847) 9.48 N, 123.9 3 E, 10–41 m Fasciolariidae Peristerninae Opeatostoma pseudodon Panama, Pedro Gonzales Island, BAU00689 (Burrow, 1815) Archipelagus Las Perlas, 8.4 N 79.1 W, intertidal, 02.2006 Fasciolariidae Fusininae Fusinus tenerifensis Canary Islands, Puerta de la Cruz BAU00694 Hadorn and Rola´n, 1999 0 Fasciolariidae Fasciolariinae Fasciolaria lignaria S. Marinella (Italy) 42 02 N BAU00227 0 (Linnaeus, 1758) 11 54 E, intertidal using the PCR primers and sequences visualized on model parameters were estimated by MrBayes during automatic sequencer. Sequencing was performed by phylogenetic reconstruction. A four-chain metropolis- Macrogen Inc. (Seoul, South Korea). Chromatograms coupled Monte Carlo analysis was run twice in parallel were analysed by Staden Package (Version 1.6.0, Staden for 106 generations, and trees were sampled every 1000 et al., 1998, 2005). All sequences have been deposited at generations, starting after a burn-in of 250000 genera- EMBL (see Table 2 for accession numbers). tions. Stationarity was considered to be reached Sequences obtained were aligned using ClustalX when the average standard deviation of split frequencies (Thompson et al., 1994; 1997) with the default settings. shown in MrBayes was less than 0.01 (Ronquist and The alignments obtained were manually edited. The Huelsenbeck, 2003). Bayesian posterior probabilities w2 test implemented in PAUP* v. 4b10 (Swofford, 2002) (BPP) of a branch were estimated as the percentage of was used to test for base composition homogeneity of trees (after burn-in) which showed that specific node. the sequence data aligned. A Bayesian analysis of the aligned sequences was RESULTS performed using MrBayes v. 3.1.2 (Ronquist and Huel- senbeck, 2003), which sampled trees from posterior Anatomy of Troschelia berniciensis: EXTERNAL MOR- densities using the Markov Chain Monte Carlo method PHOLOGY: Animal (Figures 1–3) is uniform cream in col- (Larget and Simon, 1999; Yang and Rannala, 1997). or. Foot (Figure 1, ft) partly contracted, with deep The substitution model to be used in the Bayesian propodial groove (prpg) separating narrow propodium. analysis was chosen after evaluation by the software Operculum oval, with terminal nucleus (Figure 1, op). MrModeltest 2.2 (Nylander, 2004), while base frequen- Head moderately large, broad (Figure 1, hd) with pair cies, relative rates of the six substitution types and of long, thick tentacles, each with large black eye on A. R. Kosyan et al., 2009 Page 97 Table 2. Species included in the phylogeny based on partial 16S DNA sequences. Family Species Locality Voucher number EMBL Reference Cancellariidae Cancellaria cancellata Off Malaga (Spain), BAU00224 FM999105 Oliverio and Linne´, 1767 40–50 m Modica, in press Fasciolariidae Turrilatirus turritus Balicasag (Philippines) BAU00695 FN394061 this study (Gmelin, 1791) 9.51 N, 123.68 E, 80–150m Fasciolariidae Fasciolaria lignaria S. Marinella (Italy) 42.03 N, BAU00227 FN394059 this study (Linnaeus, 1758) 11.9 E, intertidal Fasciolariidae Fusinus akitai Off Atsumi, Aichi, central — AB044253 Hayashi, 2005 Kuroda and Habe in Habe, Japan 1961 Fasciolariidae Granulifusus niponicus Off Kushimoto, — AB044254 Hayashi, 2005 (E.A. Smith, 1879) Wakayama, central Japan 0 Buccinidae Troschelia berniciensis South of Ireland, 51 19.2 BMNH FN394057 this study 0 (King, 1846) N, 08 32.2 W 20031298 BAU00687 Buccinidae Pollia tincta St. Petersburg Beach, — AB044270 Hayashi, 2005 Conrad, 1846 Pinellas, Florida, USA Buccinidae Pisania striata Salina Is. (Italy), 38.58 N, BAU00698 FM999128 Oliverio and Gmelin, 1791 14.80 E, intertidal Modica, in press Buccinidae Engina pulchra Venado (Panama), 8.89 N, BAU00276 FN394058 this study 79.59 W intertidal Buccinidae Cantharus multangulus Tierre Verde, Pinellas, — AB044259 Hayashi, 2005 (Philippi, 1848) Florida, USA Buccinidae Paraeuthria plumbea Ushuaia (Argentina), BAU00697 FM999126 Oliverio and (Philippi, 1841) 54.78 S, 68.23 W, MNHN IM- Modica, in intertidal 2009-4613 press Buccinidae Neobuccinum eatoni Terra Nova Bay (Antarctic), BAU00785 FM999127 Oliverio and (Smith, 1875) 74.69 S, 164.12 E, MNHN