Thermal preference and tolerance of Megastrea (Lithopoma) undosa (Wood, 1828; Gastropoda: Turbinidae) |
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| Authors: | Fernando Diaz Alfredo SalasAna Denisse Re Marco GonzalezIzbelt Reyes |
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| Institution: | a Laboratorio de Ecofisiología de Organismos Acuáticos. Departamento de Biotecnología Marina, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana 3918, Ensenada Baja California, Mexico
b Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, Kilometro 103 Carretera Tijuana-Ensenada, Ensenada Baja California, Mexico. |
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| Abstract: | The thermoregulatory behavior of the wavy turban snail Megastrea (Lithopoma) undosa was determined in a horizontal thermal gradient and was 16.31 in day cycle and 14.4 °C in night cycle. Displacement velocity of adults was 29.3±4.2 cm h−1 during the light phase and 26.1±3.2 cm h−1 during the dark phase. The critical thermal maxima of the wavy turban snail were determined. As a measure of thermal tolerance, snails were subjected to increasing water temperatures at a rate of 1 °C every 30 min until they were detached from the substrate. The critical thermal maximum at 50% was 29.7 °C. |
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| Keywords: | Preferred temperature Critical thermal maxima Wavy turban snail |
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