Thermal preference,tolerance and oxygen consumption of adult white shrimp Litopenaeus vannamei (Boone) exposed to different acclimation temperatures |
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Authors: | Ricardo A. Gonzá lez,Fernando Dí az,Alexei Licea,Ana Denisse Re,L. Noemí Sá nchez,Zaul Garcí a-Esquivel |
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Affiliation: | 1. Laboratorio de Ecofisiología de Organismos Acuáticos, Departamento de Biotecnología Marina, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Kilómetro 107 Carretera Tijuana-Ensenada, Ensenada Baja California, México;2. Laboratorio de Inmunología Molecular, Departamento de Biotecnología Marina, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera EnsenadaTijuana #3918, Ensenada Baja California, México;3. Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California (UABC), Kilómetro 103 Carretera Tijuana-Ensenada, Ensenada Baja California, México |
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Abstract: | Final temperature preferendum of white shrimp adults were determined with acute and gravitation methods. The final preferendum was similar, independent of method (26.2–25.6 °C). A direct relationship was determined between the critical thermal maxima values and the acclimation temperatures (P<0.05). The end point of Critical Thermal Maxima (CTMax) for adults was defined as the loss of righting response (LRR). The acclimation response ratio (ARR) for adults of white shrimp had an interval of 0.36–0.76, values that agreed with others obtained for crustaceans from tropical and subtropical climates. The oxygen consumption rates increased significantly (P<0.05) from 39.6 up to 90.0 mg O2 kg−1 h−1 wet weight (w.w.) as the acclimation temperature increased from 20 to 32 °C. The range of temperature coefficient (Q10) of the white shrimp between 23 and 26 °C was the lower 1.60. The results obtained in this work are discussed in relation to the species importance in the reproductive scope and maintenance of breeders. |
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Keywords: | Preferred temperature oxygen consumption rate acclimation temperature Litopenaeus vannamei |
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