Abstract
Correction: QTL Mapping of Combining Ability and Heterosis of Agronomic Traits in Rice Backcross Recombinant Inbred Lines and Hybrid Crosses
Highlights
The increasingly obvious effects of pollution of the biosphere in general and aquatic ecosystems in particular are known to everyone and are the subject of daily accounts in the popular press as well as textbooks [1] and scientific monographs [2,3]. It is the intent of this short review to: (a) examine the morphology and physiology of the fish gill epithelium and its underlying vasculature, (b) briefly review selected data which indicate that a variety of toxicants in the aquatic environment can affect gill structure and function, (c) delineate specific sites of action in the gill which may account for the toxic effects, and (d) suggest that the fish gill may be used as a model system for study of the more generalized effects of toxicants on ion transport across cellular and epithelial membranes, as well as vasoactivity of blood vessels
The epithelium on each branchial arch is subdivided into two dorsoventral columns of filaments, with dorsal and ventral rows of secondary lamellae being further subdivisions on each filament, lying at right angles to the filamental plane (Fig. 1)
The teleost fish gill is covered by a complex epithelium whose function is controlled by perfusion through a rather intricate vascular system
Summary
The increasingly obvious effects of pollution of the biosphere in general and aquatic ecosystems in particular are known to everyone and are the subject of daily accounts in the popular press as well as textbooks [1] and scientific monographs [2,3]. It is the intent of this short review to: (a) examine the morphology and physiology of the fish gill epithelium and its underlying vasculature, (b) briefly review selected data which indicate that a variety of toxicants in the aquatic environment can affect gill structure and function, (c) delineate specific sites of action in the gill which may account for the toxic effects, and (d) suggest that the fish gill may be used as a model system for study of the more generalized effects of toxicants on ion transport across cellular and epithelial membranes, as well as vasoactivity of blood vessels. Cited references will emphasize review papers or chapters in books in many cases in order to facilitate entry into a vast literature and to save space
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