How many species of Mollusca are there in Brazil? A collective taxonomic effort to reveal this still unknown diversity

Machado, Fabrizio M.; Miranda, Marcel S.; Salvador, Rodrigo B.; Pimenta, Alexandre D.; Côrtes, Mariana O.; Gomes, Jaime A.J.; Miyahira, Igor C.; Agudo-Padrón, Ignacio; Oliveira, Cléo D.C.; Caetano, Carlos H.S.; Coelho, Paulo R.S.; D’Ávila, Sthefane; Arruda, Eliane P. de; Almeida, Sérgio M. de; Gomes, Suzete R.; Alvim, Juliana; Galvão-Filho, Hilton; L. Ferreira-Júnior, Augusto; Marques, Rodrigo C.; Martins, Inês; Souza, Leonardo S. de; Arruda, Janine O.; Cavallari, Daniel C.; Santos, Sonia B. dos; Pedro, Natan C.; Salles, Anna C. de A.; Dornellas, Ana P.S.; Lima, Tarcilla C. de; Amaral, Vanessa S. do; Silva, Fernanda S.; Passos, Flávio D.; Thiengo, Silvana S.; Leite, Tatiana S.; Simone, Luiz R.L.

doi:10.1590/s1984-4689.v40.e23026

Cited by 2 publications

(2 citation statements)

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“…On a global scale, it is estimated that there are more than 5000 species of limnic mollusks. In Brazil, so far, 293 species have been officially described, but estimates speculate numbers between 340 and 359 species [1]. However, the lack of basic information about these species throughout the country makes it difficult to accurately assess their conservation status and distribution, which are considered crucial aspects for the definition of threat levels [1].…”

Section: Introductionmentioning

confidence: 99%

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Diversity of Freshwater Mollusks from Lake Pampulha, Municipality of Belo Horizonte, Minas Gerais, Brazil

Coelho,

Thiengo,

de Mendonça

et al. 2024

Diversity

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The artificially created Lake Pampulha, within the metropolitan area of Belo Horizonte, Minas Gerais State, lacks detailed information about its freshwater mollusks, representing a challenge for the assessment and conservation of this ecosystem. In this study, conducted during June and August 2021, we collected specimens on four different occasions and at five sampling points around the lake, using different sampling equipment, such as a shovel and a scoop. During these collections, we identified, enumerated and measured 1538 species of mollusks and additionally examined the presence of trematode larvae. We identified twelve species of fresh water bivalves and gastropods: Biomphalaria straminea, Biomphalaria kuhniana, Biomphalaria occidentalis, Drepanotrema cimex, Pomacea maculata, Stenophysa marmorata, Physa acuta, Gundlachia ticaga, Melanoides tuberculata, Pseudosuccinea columella, Omalonyx matheroni and Corbicula largillierti. Echinostome and strigeocercaria types of larval trematodes were detected in B. straminea. Notably, some species of mollusks have not previously been recorded at Lake Pampulha. The analyses revealed differences in the composition and abundance of species, highlighting the higher number of mollusk species in areas more impacted by human actions. This study expands our understanding of mollusk diversity at Lake Pampulha, and provides valuable data for longitudinal comparisons of water quality and considerations of the conservation of native species. Furthermore, it highlights the importance of choosing appropriate sampling equipment, depending on the research objectives. The presence of invasive species of medical and veterinary relevance as intermediate hosts of parasites reinforces the need for efficient environmental protection strategies to preserve this artificial, aquatic environment widely used by the local population and by tourists.

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Section: Introductionmentioning

confidence: 99%

“…assess their conservation status and distribution, which are considered crucial aspects for the definition of threat levels [1].…”

Section: Introductionmentioning

confidence: 99%

Diversity of Freshwater Mollusks from Lake Pampulha, Municipality of Belo Horizonte, Minas Gerais, Brazil

Coelho,

Thiengo,

de Mendonça

et al. 2024

Diversity

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Checklist of marine Bivalvia (Mollusca) from Brazil, with descriptive analyses of their bathymetric and geographical distribution

PASSOS,

BATISTÃO,

LIMA

2024

Zootaxa

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After revising the literature and consulting the pertinent virtual databases, we here list all Brazilian marine bivalves currently considered as valid and include data on their geographical and bathymetrical distribution. The list contains 516 indigenous and nine introduced species. Among the former, 461 species are autobranchs and 64 are protobranchs. They belong to 42 superfamilies, nine of them containing at least 20 species each; there are 77 families, twelve of which contain at least 15 species; most of these more speciose groups are typical from shallow waters (e.g., Tellinoidea and Veneroidea) and/or have been reviewed taxonomically (Nuculanoidea and Cuspidarioidea). There are 368 species which live exclusively on the continental shelf, 86 are only known from deep water and 68 species have a wide bathymetric distribution. More than half of the 368 continental-shelf species have a wide geographic distribution; 40 species are exclusive to the Brazilian province, the others also occur in the Caribbean and/or Argentine shelf waters; those from the Caribbean need more investigation. Important knowledge gaps remain for Brazilian Galeommatoidea and Nuculoidea, deep-sea species of Mytilidae, Teredinidae, and Arcidae; the Poromyidae, Limopsidae, Propeamussiidae, and Thyasiridae appear to be underrepresented. Compared to 29 world regional faunas of marine bivalves, the Brazilian diversity ranks in the ninth position.

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How many species of Mollusca are there in Brazil? A collective taxonomic effort to reveal this still unknown diversity

Cited by 2 publications

References 185 publications

Diversity of Freshwater Mollusks from Lake Pampulha, Municipality of Belo Horizonte, Minas Gerais, Brazil

Diversity of Freshwater Mollusks from Lake Pampulha, Municipality of Belo Horizonte, Minas Gerais, Brazil

Checklist of marine Bivalvia (Mollusca) from Brazil, with descriptive analyses of their bathymetric and geographical distribution

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