Publication Date:
2021-03-29
Description:
Sublethal effects of environmental changes on marine fish eggs and larvae are reviewed within a framework of concepts supplied by Bartholomew (1964), Sprague (1971), and Selye (1 952). Such effects are those a) elicited through application of stress at one level of organization or development, b) recognized through the appearance of alte red structure or function at a later stage of development, and c) whose significance is fully manifested as lower survival potential at a further stage of development. A number of sublethal effects are marshalled in terms of type of biological response and inferred consequences. Data suggest that a variety of stress-stressor systems may trigger a limited number of organismic responses, often appearing to involve the same physiological and biochemical mechanisms. Most sublethal effects appear to be biochemical in origin, elicited through physical or chemical change, and expressed in terms of histological, morphological, physiological, or ethological response. A need is expressed for an expanded and more unified enquiry into the origin, recognition, and significance of sublethal effects.
Type:
Article
,
PeerReviewed
Format:
text
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