Redescription and anatomy of Diplodonta portesiana (d'Orbigny, 1846) (Bivalvia, Ungulinidae) from Brazil

Autor(es)

Romera, Barbara L. V. ; Simone, Luiz R. L. ; Cunha, Carlo M.

• Tipo de documento: Artigo Científico
• Fonte: ZOOKEYS; v. N/A, n. 275, p. 15-pg., 2013-01-01.

Resumo

The present redescription of Diplodonta portesiana (d'Orbigny, 1846) is the first part of the revision of this genus in the East Atlantic. This species, despite being common in the Atlantic coast, remains poorly known. A detailed shell and anatomical study was conducted based not only on specimens from the type locality's vicinities but also on samples from other regions. Diagnostic characters for D. portesiana includes: rounded shell with a small ligament; triangular, short and deep nymph; external micro ornamentation composed of small concavities in a concentric pattern; small adductor muscles; reduced pedal gape; pair of long hemipalps with a large area covered by folds; stomach with four ducts leading to digestive diverticula; and long intestine length. Our study suggests at least two new diagnostic characters to the genus: the two pair of muscles that controls the incurrent and excurrent openings and a residual ring-like tissue surrounding the anterior half of the posterior foot retractor muscle. (AU)

• Processo FAPESP: 10/11253-9 - Análise filogenética de Aplysiomorpha (Mollusca, Opisthobranchia), com base em morfologia comparada, e revisão sistemática das espécies brasileiras
• Beneficiário: Carlo Magenta Cunha
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 10/11401-8 - Revisão taxonomica do gênero Diplodonta (Bivalvia: Ungulinidae) da costa brasileira.
• Beneficiário: Bárbara Louise Valentas Romera
• Modalidade de apoio: Bolsas no Brasil - Mestrado