Spermatozoan ultrastructure and mitochondrial gene sequence of Caryocorbula caribaea (d'Orbigny, 1853) (Corbulidae: Bivalvia), a species with plasticity in shell morphology

Autor(es)

Tallarico, Lenita de Freitas ^[1] ; Introini, Gisele Orlandi ^{[1, 2]} ; Bonini, Amanda ^[1] ; Passos, Flavio Dias ^[3] ; Machado, Fabrizio Marcondes ^[4] ; de Arruda, Eliane Pintor ^[5] ; Recco-Pimentel, Shirlei Maria ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Biol, Dept Biol Estrutural & Func, Sao Paulo - Brazil

^[2] Fundacao Univ Fed Ciencias Saude Porto Alegre, Dept Ciencias Basicas Saude, Rio Grande Do Sul - Brazil

^[3] Univ Estadual Campinas, Inst Biol, Dept Biol Anim, Sao Paulo - Brazil

^[4] Univ Estadual Campinas, Inst Biol, Programa Posgrad Biol Anim, Sao Paulo - Brazil

^[5] Univ Fed Sao Carlos, Dept Biol, Ctr Ciencias Humanas & Biol, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MOLLUSCAN RESEARCH; v. 35, n. 3, p. 182-187, JUL 3 2015.
• Citações Web of Science: 0

Resumo

Systematics of Corbulidae supported by anatomical and conchological studies remains confused and controversial because of the considerable phenotypic plasticity of their shells. Ultrastructural spermatozoan study and molecular analyses have been performed to contribute valuable information, which could be used in taxonomy. Electron microscopy was used to analyse sperm cells from specimens of Caryocorbula (Gardner, 1926) exhibiting shell differences. The spermatozoon was of the aquasperm type, showing short acrosome, barrel-shaped nucleus, midpiece composed of four spherical mitochondria and simple flagellum. In addition, about 860base pairs of mitochondrial large ribosomal subunit (16S rRNA) were sequenced from each individual. The consistent similarity shared by spermatozoa and DNA sequences from all studied specimens indicated that they belonged to one coherent unit, Caryocorbula caribaea (d'Orbigny, 1853), despite the extraordinary plasticity exhibited by their shells. (AU)

• Processo FAPESP: 10/15486-8 - Estudo ultra-estrutural de gametas e filogenia molecular de espécies da Superfamília Tellinoidea (Mollusca, Bivalvia)
• Beneficiário: Shirlei Maria Recco-Pimentel
• Modalidade de apoio: Auxílio à Pesquisa - Regular