ISSN:
1573-5117
Keywords:
Limnephilus sp.
;
O:N ratios
;
pH toxicity
;
aluminum toxicity
;
bioassay
;
respiration
;
nitrogen metabolism
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Respiration and excretion were measured relative to pH and aluminum in three nymphal weight groups of a detritivore caddisfly. Although a reduction in respiration rates was consistently observed within all stages exposed to a pH of 4 and 0.3 mg 1−1 of aluminum, the differencewas not statistically significant among treatments. Excretion rates, on the other hand, were significantly increased throughout the low pH treatment, but not when exposed to low pH and aluminum combined. The derived O:N ratios indicate low pH causes a shift to a protein-oriented metabolism which was most pronounced in the smallest size group. Aluminum mitigates this effect.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00007438
Permalink
