Thermal Tolerance of Ten Shallow-Water Ophiuroids in Biscayne Bay, Florida
The upper instantaneous lethal temperatures of ten species of brittle stars from Biscayne Bay, Florida, were found to be between 37.5°C and 40.5°C. The lower instantaneous lethal temperatures for three amphiurids, Amphioplus coniortodes, Ophionepthys limicola, and Micropholis gracillima were between −2°C and 0°C. Critical temperatures for survival of the three amphiurids were 10°C and 33°-35°C. Within these tempertures, survival times were controlled by factors other than temperature. Below and above these temperatures, survival times decreased with increasing departure from the critical temperature. Comparison with ambient temperatures of Biscayne Bay show that the three amphiurids live within 4°-6°C of their upper critical temperature in the summer, and in winter they live within 10°C of their lower critical temperature.
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Document Type: Research Article
Publication date: 1971-12-01
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