期刊
ZOOLOGIA
卷 27, 期 4, 页码 554-562出版社
SOC BRASILEIRA ZOOLOGIA, UNIV FEDERAL PARANA
DOI: 10.1590/S1984-46702010000400007
关键词
Developmental biology; euryhalinity; guppy; mucous cells; teleosts
类别
资金
- FAPESP
- FUNAPE
- CNPq (PIBIC - UFG)
The present study evaluated and characterized the different phases of development and the cell types present in the gill epithelium of embryos, larvae, and fingerlings of guppy (Poecilia vivipara Bloch & Schneider, 1801) specimens exposed to water with salinity ranging from 0 parts per thousand to 20 parts per thousand. The development of P vivipara was classified into eight phases. The yolk was intensely eosinophilic, with glycidic and lipidic components between phases 1 to 7. After the development of their branchial epithelium, the presence of pavement cells, mitochondria-rich cells, and mucous cells (MCs) was observed. The understanding of ontogenesis indicates the sequence of cellular origin. Only type IV MCs located in the gill rays was detected from phase 3 through phase 7. Other types of MCs were observed only when the fingerlings were exposed to salinity changes and showed to be lectin-reactive, thus indicating that P vivipara modulates the cellular behavior when submitted to salinity changes. Exposure to variable saline concentrations did not interfere in the initial development of guppies. The presence of a yolk sac until the fingerling phase characterized this species as ovoviviparous.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据