Checklist of the Shallow-Water Marine Molluscs Of
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Ar;OREANA, 1998,8(4): 487-523 CHECKLIST OF THE SHALLOW-WATER MARINE MOLLUSCS OF . THE AZORES: 1 - PICO, FAIAL, FLORES AND CORVO Sergio P. Avila*, Jose M.N. Azevedo*, Joao M. Gon~alves**, Jorge Fontes** & Frederico Cardigos** *Secr;ao de Biologia Marinha, Departamento de Biologia, Universidade dos Ar;ores PT 9500 Ponta Delgada, Ar;ores, Portugal email: [email protected];[email protected] **Departamento de Oceanografia e Pescas, Universidade dos Ar;ores PT-9900 Horta, Ar;ores, Portugal email: [email protected];[email protected];[email protected] ABSTRACT An up-to-date commented check-list of the shallow-water marine molluscs of Pico, Faial, Rores and Corvo islands (Azores, Portugal) is provided, based on literature records, on material deposited at the Department of Biology of the University of the Azores (DBUA) as a result of the scientific expeditions "Rores/89", "Ar;ores/89" and "Pico/91", and on photographic material at the Department of Oceanography and Fisheries/University of the Azores (DOPIUA). The collections of the Museu Carlos Machado - Historia Natural, MCM-HN, of the Museu de Zoologia - Museu de Historia Natural da Faculdade de Ciencias e Tecnologia da Universidade de Coimbra, MZIMHN-FCTUC, and the mollusc collection deposited at DOP/UA were surveyed and the results are included in this report. Two hundred and fifty five taxa of shallow-water molluscs are reported to Pico, Faial, Flores and Corvo Islands (196 Gastropoda, 50 Bivalvia and 9 Cephalopoda). Of these, 32 are dubious records (23 Gastropoda, 8 Bivalvia and 1 Cephalopoda), there remaining 197 confirmed species to these islands. A total of 26 taxa were identified only down to the genus level (25 Gastropoda and 1 Bivalvia). RESUMO Fornece-se a lista actualizada dos moluscos marinhos de aguas costeiras recolhidos nas ilhas do Pico, Faial, Flores e Corvo, com base na bibliografia e nas amostras colhidas aquando das expedir;6es cientfficas "Flores/89", Ar;ores/89" e "Pico/91". As fotografias submarinas de moluscos tiradas pelos biologos marinhos do DOP/UA - Departamento de Oceanografia e Pescas/Universidade dos Ar;ores (polo da Horta, Faial), como parte do projecto "Roteiro para 0 turismo sub-aquatico dos Ar;ores" foram tambem utilizadas neste trabalho. As colecr;6es do Museu Carlos Machado - Historia Natural, MCM-HN, do Museu de Zoologia - Museu de Historia Natural da Faculdade de Ciencias e Tecnologia da Universidade de Coimbra, MZIMHN-FCTUC e a colecr;ao de moluscos existente no Departamento de Oceanografia e Pescas da U niversidade dos Ar;ores, DOP/UA foram tambem revistas e os resultados sao aqui inclufdos. Duzentas e cinquenta e cinco taxa de moluscos litorais estao dados para as ilhas do Pico, Faial, Flores e Corvo (196 Gastropoda, 50 Bivalvia e 9 Cephalopoda). Destes, 32 sao registos duvidosos (23 Gastropoda, 8 Bivalvia e 1 Cephalopoda), existindo portanto 197 especies confirmadas. Um total de 26 taxa foram identificados somente ate ao genero (25 Gastropoda e 1 Bivalvia). 4, • 1-523 [ TROD CTU' N AVILA ET AL: MARINE MOLLUSCS or THE AZORES 489 Nordsieck & Talavera, 1979; Poppe 726. The samples DBUA 389, 406, & Goto, 1991, 1993; Macedo, 1996). 413,419 and 432 were lost Cfable 1). During "Ac;ores 89" and "Pico Between May 1996 and October 91" scientific expeditions, a tOLal of 1997, as a part of the project "Roteiro 43 and 16 samples, respectively, para 0 Turismo SUb-Aqmitico dos were collected at Pi co island, from Ac;ores". several photos of marine the intertidal zone to a depth of 28m. molluscs, especially of Opisthobranchia, Adding the samples collected by tbe were taken by the Marine Biology first author at several places on the Team of the DOP/UA and have littoral of Pico, a total of 76 samples contributed to increase this check -list. from this island were worked. All slides were digitized, a data bank During "Ac;ores 89" scientific was created at DOP/UA and the expedition, a total of 67 samples images stored in the image bank were collected at Faial island, frorn ImagDOP. Posteriorly, they were the intertidal zone to a depth of 30m. identified and labeled (Table 2). Recently, more samples were collected DUling a shOlt visit to Faial in October at Faial by the first author, thus 1998, the first author revised the making a total of 151 samples sorted marine molluscs that were stored at at these two islands. During the DOP/lJA and the malacological scientific expedition "Flores 1989" reference collection was started. The and also from 27 -29 October 1990, a identified species were also included total of 173 samples were coIl "eted here, under the item DOP/ML around the island of Flores, from ihe (reference collection of the marine intertidal zone to a depth of 20m molluscs deposited at DOP) (Table 3). (Table 1). The molluscs collection of the All molluscs were preserved in Museu de Zoologia - Museu de 70% alcohol and those collected Hist6ria Natural da Faculdade de dUling "Ac;ores 89" scientific expedition Cicncias e Tecnologia da Universidade were sorted from algal material at the de Coimbra, MZ/MHN-FCTUC, and laboratories of the DOP/UA (Horta, of the Museu Carlos Machado Faial). They were later identified at (Hist6ria Natural), located at Ponta the Marine Biology laboratories of Delgada. MCM-HN, were surveyed the Universidade dos Ac;ores (ponta and the results were also included in DeJgada, Sao Miguel). The material this work. collected in lhese scientific expeditionc. Species determination and the is deposited at the Department oj ordination of families follows the Biology of the University of the Azores Check List of European Marine (DBUA) under the Reference Coll(:~'li0n MolJusca (C LEMAM) database. The numbers DBUA 178-286, DBLA synonymy of the old citations was 368-500, DB A 517-580, DBUA updated with the help of this 665-672, DBUA 674, DBUA 677, database. Specialized works were DBUA 678, DBUA 714 and DBUA used for the Patellidae (Titselaar, 490 A(:OREANA 1998,8(4): 487-523 1998), Littorinidae (Backeljau Parella l1Ioreleti Drouet, 1858. Over rocks & Warmoes, 1992), Triphoridae on the liuoral of Faial (Drouel, 1858: 42). Palella caerttlea (Linnaeus, 1758). Cais (Graham, 1988, with corrections do Pica (Nobre, 1924: 83; 1930: 60) extracted from CLEMAM), Turridae (misidentification). Flores (Nobre, 1924: 83; (Nordsieck, J 977), Rissoidae (Gofas, 1930: 60) (misidentification). 1990; Moolenbeek & Hoenselaar, Purella vulgata Linnaeus, 1758. Laginha, 1987) and Ellobiidae (Martins, Faia l (mediolittoral) (Arruda & Gordo, 1984: 27) (rmsidenti fication). 1996). Palella afr. calldei d'Orbigny, 1838. Santa The Polyplacophora are still under Cruz, Flores, at rnediolittoral (Azevedo & study and were not referred to in this Gofas, 1990: 83) (misidenti [ication). paper. Palella calldei gomesii (Drouet, 1858). Santo Amaro, PI co (Morton el aI., 1998: 61). Sanl3 CrIlZ harbor, Flores (Morton el ai., RESULTS 1998: 119). Remarks: the synonymy of the Patella of A total of 255 species of shallow the Azores is quite complex. For further -water molJuscs are reported to the details, see Christiaens (1973), Hawkins er al. (1990) and especially Titselaar islands of Pico, Faial, Flores and (1998). Corvo (196 Gastropoda, 50 Bivalvia and 9 Cephalopoda). Of these, 31 are Patella ulyssiponeJlsis Gmelin, 1791 dubious records (22 Gastropoda, 8 Patella IOlVei d' Orbigny, 1839. Littoral of Pico (Drouet, 1858: 40). Bivalvia and 1 Cephalopoda) so there Parella specrabilis Dunker, 1853. Shores are 198 confirmed species to these of Pico (Droutt, 1858: 40). islands. A total of 26 taxa were Patella nigro-squamosa Dunker, 1853. identified only down to the genus level Nl'~lrby Horta (Dunker. 1853: 41 fide Drouer, I b58: 41) rmisidenri fication). (25 Gastropoda and 1 Bivalvia). Patel/a baudollii Droue!' 1858. On the rocks, near the surface of the water, at Pico (Drou('[, 1858: 41). TAXONOMIC LIST Patella caemlea val'. aspera Lamarck, 1819. Horta, over rocks of the littoral (Sm. 104, "Hirondelle", 1887) (DalJtzenberg, Phylum MOLL SCA 1889: 67). Class GASTRO PODA Parella aspera Lamarck, 1819. Pico and Subclass PROSOBRANCHIA Horra. F~ll a l and Flores (Nobre, 1924: 83; Order ARCH A ,OGASTROPODA 1930: 60). Laginha, Faial (upper part of the Family Palellidac infrnlittoral) Arruda & Gordo, 1984: 27). Sa nta JU Z, Flor L's (mediolinoral) (Azevedo Patella gomesi Drouc;t, 1858 Palefla vlIlgatn (Linnaeus, 1766). Azores, & GaLlS, I <)YU : 83). at [he shore (Mac Andrew. 1856: 118. j 6) Parelfel coent/eo (Linnaeus, 1758). Horta (misidentification). Pi co ( iobre. 1924: 8 ' ; (NoDre, 1924: 83 : 1910: 60) (misidentification). 193n: b(YI (misidentili c:uion). Patl'lla lilyssipoJ1ensis aspera Rbcling, Purella cn:l1afC/ Gmelin, i790. Pica (Drouet, J 7 8. Rcsc rv3 do !'vloJltc da Guia, Faial 1858: 40) (111ISi ck nri fi catlon) (Gon<,:alvcs & Martins, 1993: 32). Santo Palella gOl1l csii DroueL 1858. On the Amaro, Pico (Morton el 01.,1998: 61). rocks, ne:H th~ surface of t he water at Pica Il1wgDOP s l22·j7. (Dwud. 1858 _ 9). DB ',\ 2:1 4, 667, 668. Palella u/vssipolleJlsis Gmelin, 179 J. AVILA ET AL: MARINE MOLLUSCS OF THE AZORES DBUA 179,190,240,264,265, 271,458,496, dubious record because, from hundreds of 499, 554,562, 579, 669, 670, 672, 677, 714. living specimens and shells that we have seen from almost all the islands, none Family Acmaeidae seemed to us like Haliotis coccinea. Acmaea virginea (O.F. Muller, 1776) Tectura virginea MUller, 1776. Azores Haliotis tuberculata tuberculaia Linnaeus, (Jeffreys, 1882: 671). 1758 Lottia virginea Miiller, 1776. Between Haliotis tuberculata Linnaeus, 1758. Azores, Areia Larga and MadaJena (Drouet, 1858: 43). at shore (Mac Andrew, 1856: 119). Shores of Acmaea virginea (Miiller, 1776). Horta Pico and Faial (Drouet, 1858: 37). Pico and (-15 to -20 m, Stn. 103, "Hirondelle", 1887) Horta, Faial (Nobre, 1924: 82; 1930: 59-60).