Effects of low dissolved oxygen on survival and asexual reproduction of scyphozoan polyps (Chrysaora quinquecirrha)

Hypoxic conditions are common in many coastal environments such as Chesapeake Bay. While medusae appear to be quite tolerant of low dissolved oxygen (DO) concentrations, the effects of hypoxia on the benthic polyp stages are unknown. Chrysaora quinquecirrha (DeSor) polyps, and were subjected to 5 DO...

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Bibliographic Details
Published in:Hydrobiologia 2001-05, Vol.451 (1-3), p.89-95
Main Authors: CONDON, Robert H, DECKER, Mary Beth, PURCELL, Jennifer E
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Chrysaora quinquecirrha
Coastal environments
Dissolved oxygen
Fundamental and applied biological sciences. Psychology
Hypoxia
Mortality
Protozoa. Invertebrata
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Summary:Hypoxic conditions are common in many coastal environments such as Chesapeake Bay. While medusae appear to be quite tolerant of low dissolved oxygen (DO) concentrations, the effects of hypoxia on the benthic polyp stages are unknown. Chrysaora quinquecirrha (DeSor) polyps, and were subjected to 5 DO treatments (air-saturated [control], 3.5, 2.5, 1.5 and 0.5 mg l^sup -1^) in the laboratory. Polyp survival and development were documented over 24 d. Virtually no mortality occurred in any treatment during the first 5 d. Total polyp mortality after 24 d was 59.3% at the lowest DO concentration, whereas
ISSN:0018-8158
1573-5117
DOI:10.1023/A:1011892107211