An erroneous record of Perna viridis (Linnaeus, 1758) (Bivalvia, Mytilidae) for the northeastern coast of Brazil, Southwestern Atlantic
2024
Eliane Pintor de Arruda | Laís Belmino Regis | Mariany Oliveira | Helena Matthews-Cascon | Cristiane Xerez Barroso
The introduction of species beyond their natural distribution area as a result of human activities is one of the main threats to marine biodiversity. In 2019, Perna viridis, an Indo-Pacific mytilid, was recorded for the first time in the coast of Brazil in Guanabara Bay (Rio de Janeiro State). In 2021, this species was recorded in the Northeast region of Brazil (Fortaleza, Ceará State). This record was subsequently replicated in studies from 2022, 2023, and 2024. The specimens from Ceará State were deposited in the malacological collection “Prof. Henry Ramos Matthews - Série B” of the Universidade Federal do Ceará. During a curation activity of this collection, these specimens were reanalyzed and their identification questioned. Therefore, this study aimed to confirm the record of P. viridis for the Northeast region of Brazil. According to the analyses, the individuals collected on the coast of Ceará are not P. viridis, but belong to Mytella strigata, a native species of the coast of South America. Thus, the occurrence of P. viridis in the Southwestern Atlantic remains restricted to the southeast region of Brazil.
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