Stages of gonadal development in females of "barba-ruça" shrimp (Artemesia longinaris - Decapoda: Penaeidae)

Submitted by Cristina Damasceno (damascenocris2011@gmail.com) on 2012-06-27T19:48:21Z No. of bitstreams: 1 Estágios de desenvolvimento gonadal de fêmeas do camarão-barba ruça Artemesia longinaris - DECAPODAPENAEIDAE.pdf: 375888 bytes, checksum: 49c10e9552615990ea7bfc976cc96a44 (MD5)Approved for entry into archive by Bruna Vieira(bruninha_vieira@ibest.com.br) on 2012-07-03T21:46:30Z (GMT) No. of bitstreams: 1 Estágios de desenvolvimento gonadal de fêmeas do camarão-barba ruça Artemesia longinaris - DECAPODAPENAEIDAE.pdf: 375888 bytes, checksum: 49c10e9552615990ea7bfc976cc96a44 (MD5)Made available in DSpace on 2012-07-03T21:46:30Z (GMT). No. of bitstreams: 1 Estágios de desenvolvimento gonadal de fêmeas do camarão-barba ruça Artemesia longinaris - DECAPODAPENAEIDAE.pdf: 375888 bytes, checksum: 49c10e9552615990ea7bfc976cc96a44 (MD5) Previous issue date: 2004The stages of gonadal development for the female of "barba-ruça" shrimp (Artemesia longinaris Bate, 1888) were characterized based on histological analysis. Four stages (immature, almost mature, ripe and spawned) were determined according to the structure and arrangement of cells in the ovary. Each stage corresponds macroscopically to a characteristic color, except stages I (immature) and IV (spawned), in which colors are very similar and can be distinguished only microscopically. The chromatic scale varies from white/translucent (stage I), neutral green (almost mature) to dark green (ripe). The mean size of cells was 56.9 µm (±3.5) (stage I), 127 µm (±2.6) (stage II) and 183 µm (±1.91) (stage III). The size frequency of cells was polimodal, and different cell stages were observed in ripe ovary, suggesting the occurrence of multiple spawning. The chromatic scale developed is an important tool for laboratory analysis, and can be easily used to identify the gonadal stages