New record and increased geographical distribution of Sphenia fragilis (H. Adams et A. Adams, 1854) (Bivalvia: Myidae) on the Brazilian coast

Folia Malacologica 2026 Open access

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Authors: Weverton John Pinheiro dos Santos, Mara Rúbia Ferreira Barros, Eduardo Machado Lelis, Andréa Magalhães Bezerra, Rafael Anaisce das Chagas
DOI: 10.12657/folmal.034.006
Cited by: 0
References: 9

Abstract

The present study reports a new record of the bivalve mollusc Sphenia fragilis (H. Adams et A. Adams, 1854), belonging to the family Myidae, for the Amazon region. The record occurred in September 2020 in the Rio dos Peixes estuary (Primavera, Pará), during benthic fauna sampling in the intertidal mangrove zone. A recent study recorded the species on the Amazon coast, but even so, the limits of its geographical distribution within Brazilian waters were confined between Ceará and Santa Catarina. Such biogeographical expansion highlights the need for revisions in the species’ dispersion patterns, contributing to the understanding of its population dynamics and distribution.

Fields of Study & Subjects

Marine Biology and Ecology Research Marine Bivalve and Aquaculture Studies Aquatic Invertebrate Ecology and Behavior

Publication details

Journal / source
Folia Malacologica
Volume
34
Issue
1
Pages
78–81
Publication date
26 February 2026
Language
EN