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Consolidated General Mollusc Species Inventory of Santa Catarina State/ SC, Central Southern Brazil Region, Including New Field Marine and Freshwater Records

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Consolidated General Mollusc Species Inventory of Santa Catarina State/ SC, Central Southern Brazil Region, Including New Field Marine and Freshwater Records Brazilian Journal of Animal and Environmental Research 1534 ISSN: 2595-573X Consolidated general mollusc species inventory of Santa Catarina state/ SC, Central Southern Brazil region, including new field marine and freshwater records Inventário geral consolidado das espécies de moluscos do estado de Santa Catarina/ SC, região Central Sul do Brasil, incluindo novos registros de campo marinhos e de água doce DOI: 10.34188/bjaerv4n1-128 Recebimento dos originais: 20/11/2020 Aceitação para publicação: 20/12/2020 Aisur Ignacio Agudo-Padrón Graduado em Geografia pela Universidade do Estado de Santa Catarina/ UDESC Instituição: Projeto “Avulsos Malacológicos – Projeto AM” Endereço: P.O. Box 010, 88010-970 Centro, Florianópolis, Santa Catarina - SC, Brasil E-mail: [email protected] ABSTRACT Six (6) new species records, including four (4) native gastropods (two marine & two limnic/ freshwater) and two (2) bivalves (one native freshwater naiad & one exotic invasive marine mussel) are added to the current inventory of continental (land/ terrestrial and limnic/ freshwater) and marine/ estuarine molluscs occurring in the geographical territory of Santa Catarina State/ SC, comprising today a general total of 1.042 verified forms. Keywords: Mollusca biodiversity, Marine species, Terrestrial forms, Freshwater species, Santa Catarina State, Central Southern Brazil RESUMO Seis (6) novos registros de espécies, incluindo quatro (4) gastrópodes nativos (dois marinhos & dois límnicos/ de água doce) e dois (2) bivalves (uma náiade nativa de água doce & um mexilhão marinho invasor) são adicionados ao inventário de moluscos continentais (terrícolas e de água doce) e marinhos/ estuarinhos ocorrentes no território geográfico do Estado de Santa Catarina/ SC, compreendendo hoje um total geral de 1.042 formas verificadas. Palavras-chave: Biodiversidade de Mollusca, Espécies marinhas, Formas terrícolas, Espécies de água doce, Estado de Santa Catarina, Centro-Sul do Brasil 1 INTRODUCTION Product of complete 24 years of systematic research, today the general inventory of molluscs occurring in the little geographical territory of Santa Catarina State/ SC, Central Southern Brazil region (Fig. 1), finally is consolidated, comprising a grand total of 1.042 species verified, of which 788 are Marine (12 Polyplacophora, 475 Gastropoda, 15 Scaphopoda, 262 Bivalvia, 24 Brazilian Journal of Animal and Environmental Research, Curitiba, v.4, n.1, p. 1534-1539 jan./mar. 2021 Brazilian Journal of Animal and Environmental Research 1535 ISSN: 2595-573X Cephalopoda) and 254 Non-Marine forms (85 limnic/ freshwater -- 45 Gastropoda (~ three (3) endemic forms) & 40 Bivalvia (~ 36 natives and four (4) exotic invasives: mussels, naiads & clams), 3 amphibious/ limnophile Gastropoda and 166 land/ terrestrial Gastropoda ~ 21 endemic forms) (Agudo-Padrón 2020 a; Agudo-Padrón & Carneiro 2020), representing a total of 199 genera and 98 families, one of the few State geopolitical territories in Brazil to have this type of basic knowledge ordered. Involving five (5) taxonomic Families, the cited 40 species of limnic/ freshwater bivalves (1 exotic invasive mussel MYTILIDAE, 23 native mussel/ naiads ~ 11 MYCETOPODIDAE & 12 HYRIIDAE, 3 exotic invasive clams CYRENIDAE, 13 native clams ~ 2 CYRENIDAE & 11 SPHAERIIDAE – the little “pea clams”) deserve special mention (Agudo-Padrón 2020 c). Following the global trend, today they constitute the most endangered molluscs in the territory of the State, principally due to different anthropic causes (of all known), who act on detriment from their their vulnerable and restricted (lotic and lentic) aquatic habitats. 2 BACKGROUND In the course of the past year 2020, and based from the knowledge available in the last systematic listings generated (Agudo-Padrón 2017, 2020 a), other six (6) new species, including four (4) native gastropods (two marine & two limnic/ freshwater) and two (2) bivalves (one native freshwater naiad & one exotic invasive marine mussel) were added to the current inventory of continental (land/ terrestrial and limnic/ freshwater) and marine/ estuarine molluscs occurring in the State, sustained product of the work developed in just over two (2) decades of systematic field researches, examination of specimens deposited in collections of museums and parallel reference studies. One more time for all taxa involved information concerning their known regional geographic distribution have been incorporated/ included and updated, taking into account the purposeful geographical territory division of Santa Catarina State/ SC into “six (6) large malacological regions” (Fig. 1), for the purposes of the best knowledge concerning the biogeographic distribution of the species thus enumerated. Brazilian Journal of Animal and Environmental Research, Curitiba, v.4, n.1, p. 1534-1539 jan./mar. 2021 Brazilian Journal of Animal and Environmental Research 1536 ISSN: 2595-573X Fig. 1. Continental & Coastal plain (right sector border) territory of Santa Catarina’s State/ SC, Central Southern Brazil region, and their geographic malacological division: (r. 1) Greater Florianópolis, coastal and mountain region; (r. 2) Northern region; (r. 3) Western region; (r. 4) Highlands region; (r. 5) Southern region; (r. 6) Itajaí River Basin Valley region (Map original by A. Ignacio Agudo-Padrón, “Project AM”) 3 RESULTS The recent incorporated species, with spatially occur in the specific malacological regions (r.) 1, 2 and 6 of the State (Fig. 1), involves the following three (3) marine & three (3) freshwater forms: ... native limnic apple snail AMPULLARIIDAE Pomacea maculata Perry, 1810 (r. 1) (Agudo-Padrón 2020 b); native freshwater naiad HYRIIDAE Rhipidodonta hylaea (d’Orbigny, 1835) (r. 6) (Agudo-Padrón & Carneiro 2020); limnic snail TATEIDAE Potamophyrgus (- Lyrodes) aff. peteningensis (Gould, 1852) (r. 6) (Agudo-Padrón & Carneiro 2020); native marine microsnail ANABATHRIDAE Amphithalamus aff. glabrus Simone, 1996 (r. 2) (Fig. 2); native marine microsnail TORNIDAE Solariorbis cf. schumoi (Vanatta, 1913) (r. 2) (Fig. 3); and exotic invasive (Mediterranean) marine mussel MYTILIDAE Mytilus galloprovincialis (Lamarck, 1819) (r. 1) (Belz et al. 2020). Brazilian Journal of Animal and Environmental Research, Curitiba, v.4, n.1, p. 1534-1539 jan./mar. 2021 Brazilian Journal of Animal and Environmental Research 1537 ISSN: 2595-573X Fig. 2. Native marine/ coastal operculate microsnail (minute sea snail) ANABATHRIDAE Amphithalamus aff. glabrus Simone, 1996, found in São Francisco do Sul Municipal District, in local sector of the Brazilian transverse highway BR-280 near the "São Chico" Port (approximately 2.5km straight from the sea), North region of Santa Catarina State/ SC (Photo by Francisco Carneiro, field biologist collaborator of the “Project AM”). Specimen with aprox. 02mm, voucher FURB-MO(-C) 641 (= FURB-MO -- Malacological Collection of “Regional University Foundation of Blumenau - FURB”, Blumenau/ SC, Central Southern Brazil) Fig. 3. Native marine operculate microsnail (minute sea snail) TORNIDAE Solariorbis cf. schumoi (Vanatta, 1913)" ~ syn. Teinostoma (Pseudorotella) schumoi Vanatta, 1913, found in Monte de Trigo River, São Francisco Island, São Francisco do Sul Municipal District near "Babitonga Bay", North region of Santa Catarina State/ SC (Photos by Francisco Carneiro, field biologist collaborator of the “Project AM”). Specimen with aprox. 02mm, voucher FURB- MO ? (pending registration number) (= FURB-MO -- Malacological Collection of “Regional University Foundation of Blumenau - FURB”, Blumenau/ SC, Central Southern Brazil) 4 DISCUSSION & CONCLUSIONS Today, the current general mollusc inventory of Santa Catarina State/ SC comprising a general total of 1.042 verified forms, representing a total of 199 genera and 98 families, one of the few State geopolitical territories in Brazil to have this type of basic knowledge ordered. However, and despite being a big step up front, this inventory is nowhere near "completed". Expectation of other new regional malacological surprises awaits us still on the near future. The research into the conservation status of mollusc biodiversity in the State is urgent in view of the rapid changes taking place to the natural environment as a result of human activities and Brazilian Journal of Animal and Environmental Research, Curitiba, v.4, n.1, p. 1534-1539 jan./mar. 2021 Brazilian Journal of Animal and Environmental Research 1538 ISSN: 2595-573X the parallel very rapid process of invasion by alien species. Depth studies of the basic population biology and reproductive cycles of the regional molluscs are urgently needed, in addition to middle- and long-term ecological research. Brazilian Journal of Animal and Environmental Research, Curitiba, v.4, n.1, p. 1534-1539 jan./mar. 2021 Brazilian Journal of Animal and Environmental Research 1539 ISSN: 2595-573X REFERENCES Agudo-Padrón, A.I. 2017. New additions to inventory of marine mollusc species from Santa Catarina, Central Southern Brazil. Boletín de la Asociación Argentina de Malacologia, 7(1): 12-15. Available online at: https://www.researchgate.net/publication/318333432_New_Additions_to_Inventory_of_Marine_M ollusc_Species_from_Santa_Catarina_StateSC_Central_Southern_Brazil Agudo-Padrón, A.I. 2020 a. Additions to the systematic inventory of non-marine molluscs occurring in the state of Santa Catarina/SC, Central Southern Brazil region. Advances in Environmental Studies, 4(1): 261-270. Available online at: https://scholars.direct/Articles/environmental-studies/aes-4-027.php?jid=environmental-
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