An ultrastructural study of the mitochondria‐rich‘chloride‘cells from the gills of freshwater and seawater‐adapted Tilapia aurea subjected to a pesticide

R. Coleman, Z. Yaron, Z. Ilan

Research output: Contribution to journalArticlepeer-review

Abstract

An electron microscopic description is presented of the mitochondria‐rich‘chloride‘cells of the gill epithelium in the cichlid fish Tilapia aurea kept in freshwater or adapted to seawater and injected with the pesticide p,p′DDT. The‘chloride‘cells may have a light or dark (electron dense) appearance. Dark‘chloride‘cells are more common in seawateradapted than in freshwater T. aurea. Characteristic features of‘chloride‘cells include an abundance of mitochondria and an elaborate tubular reticulum, which communicates directly with the basal and lateral membranes of the cells. The apical portion of the‘chloride‘cells is often larger in seawater‐adapted than in freshwater fish. Differences in‘chloride‘cell ultrastructure, which can possibly be associated with a response to different salinities, arc described and discussed. No significant ultrastructural differences are detectable in response to injections of the pesticide.

Original languageEnglish
Pages (from-to)589-594
Number of pages6
JournalJournal of Fish Biology
Volume11
Issue number6
DOIs
StatePublished - Dec 1977

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