ISSN:
1573-5133
Keywords:
Fish growth
;
Otolith increment width
;
Otolith weigth
;
Fin erosion
;
Galveston Bay
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Synopsis Atlantic croaker, Micropogonias undulatus, sampled from a transect along a pollution gradient show a trend of declining growth and physical condition. This trend is apparent in the mean size of 0-group croaker, in their recent growth rate measured by marginal otolith increment widths, in longer term growth rate as indicated by relative otolith weights, and in general physical condition as measured by an index of condition of the caudal fin. We suggest that these measures are indicators of stress associated with environmental conditions. Because croaker from different positions along the pollution gradient were distinguishable, it appears that they remain for extended periods within areas of degraded environmental quality.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00005976
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