• Home
  • UCSC journals portal
  • ANID repository
  • UCSC Thesis Repository
  • English
  • Español
  • Log In
    Have you forgotten your password?
  1. Home
  2. Productividad Científica
  3. Publicaciones Científicas
  4. Intracapsular development in the freshwater gastropod Chilina dombeiana (Bruguiere, 1789). (Gastropoda: Hygrophila: Chilinidae)
 
Options
Intracapsular development in the freshwater gastropod Chilina dombeiana (Bruguiere, 1789). (Gastropoda: Hygrophila: Chilinidae)
Dr. Brante-Ramírez, Antonio 
Facultad de Ciencias 
Borquez-Castro, Jessica
Facultad de Ciencias 
Valdovinos-Zarges, Claudio
Biodiversity Heritage Library
2015
Chilina dombeiana (Bruguière, 1789) is a native Chilean species inhabiting freshwater and estuarine environments. In the present study, a series of stages for embryonic development of the embryo is described. The snails lay gelatinous and transparent zig-zag-like string egg masses, ranging between 10 and 130 mm in length. Each egg mass contains a variable number of embryos ranging from 60 to 298 eggs with a mean density of 2.9 mm (+ 0.7 SD). Embryos inside egg masses are individually encapsulated and embedded in a jelly matrix. Hatching as crawling juveniles took place after 28 days, indicating that direct development occurs in this species. In contrast to other fresh water pulmonates, the well-developed operculum observed in C. dombeiana from the veliger stage, suggest a marine ancestry for this species.
No Thumbnail Available
Download
Name

Intracapsular development in the freshwater gastropod Chilina dombeiana (Bruguiere, 1789). (Gastropoda. Hygrophila. Chilinidae).pdf

Size

1.57 MB

Format

Checksum
Chilinidae
Bio-Bio river
Hermaphroditism
Historial de mejoras
Proyecto financiado por: