High-intensity light of full-spectrum LED promotes survival rate but not development of the larval swimming crab Portunus trituberculatus |
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| Affiliation: | 1. Key Laboratory of Applied Marine Biotechnology, Ningbo University, Chinese Ministry of Education, 818 Fenghua Road, Ningbo, 315211, China;2. Collaborative Innovation Center for Zhejiang Marine High-Efficiency and Healthy Aquaculture, 818 Fenghua Road, Ningbo, 315211, China;3. Zhejiang Hengze Ecological Agriculture Technology Co., Ltd., China;4. Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China;1. ADS Environmental Services Sdn. Bhd., Lot 1-1 (Mc No.2), Likas, 88400, Kota Kinabalu, Sabah, Malaysia;2. Department of Physics and Physical Oceanography Memorial University of Newfoundland, St. John''s, NL, A1B 3X7, Canada;3. Northwest Atlantic Fisheries Centre, 80 East White Hills, St John''s, Newfoundland and Labrador, A1C 5X1, Canada;1. College of Ocean Engineering, Guangdong Ocean University, Guangdong 524088, China;2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;3. Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;1. Sokoine University of Agriculture, Department of Animal, Aquaculture and Range Sciences, P.O Box, 3004, Morogoro, Tanzania;2. Mwalimu Julius K. Nyerere University of Agriculture and Technology, College of Fisheries and Aquatic Sciences, P.O Box 976, Musoma, Tanzania;3. Technical University of Denmark, DTU Aqua, Section for Aquaculture, The North Sea Research Centre, P.O. Box 101, DK-9850, Hirtshals, Denmark;4. Technical University of Denmark, Department of Environmental Engineering, DTU Environment, Bygningstorvet, Build. 115, DK-2800, Kgs. Lyngby, Denmark;1. Doctorado en Acuicultura, Programa Cooperativo, Universidad de Chile, Universidad Católica del Norte, Pontificia Universidad Católica de Valparaíso, Chile;2. Departamento de Acuicultura, Facultad de Ciencias del Mar, Universidad Católica del Norte, Larrondo, 1281, Coquimbo, Chile;3. Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Unidad Regional de Desarrollo Científico y Tecnológico (CONICYT), Colina El Pino s/n, La Serena, Chile;1. ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751002, India;2. ICAR-Central Inland Fisheries Research Institute, Barrackpore, West Bengal, India;1. The Conservation Fund Freshwater Institute, 1098 Turner Road, Shepherdstown, WV, 25443, USA;2. Department of Natural Resources and Environmental Science, The University of Illinois at Urbana-Champaign, W-503 Turner Hall, 1102 South Goodwin Avenue, Urbana, IL, 61801, USA;3. Department of Crop Sciences, The University of Illinois at Urbana-Champaign, AW-101 Turner Hall, 1103 South Goodwin Avenue, Urbana, IL 61801, USA;4. Illinois Natural History Survey, The Prairie Research Institute, 1816 S. Oak Street, Champaign, IL, 61820, USA;5. Superior Fresh, W15506 Superior Fresh Drive, Hixton, WI, 54635, USA |
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| Abstract: | In this study, a 25-day experiment was performed to evaluate the survival and development of Portunus trituberculatus larvae under different light intensities (0, 61.55, 93.57, 124.31, 195.31, 248.51, and 310.95 μmol m−2 s-1). The newly hatched larvae were cultured in 1-L beakers at a density of 100 individuals/L, with four replicates per treatment. Full-spectrum light-emitting diode (LED) strip lamps were used as the light source. The larvae were fed with Artemia nauplii until all the larvae metamorphosed to young crabs or died, and survival and development of the larvae were recorded. The results showed that P. trituberculatus zoeae were not able to complete the entire larval cycle in the absence of light. In the dark treatment, the survival rate of the larvae decreased sharply in Z3 and reached 0.8 % in Z4, and all the larvae failed to develop to the megalopa stage. In the light treatment, no significant differences were observed in the survival rates of the Z1, Z2, and Z3 larvae under different light intensities (P > 0.05). However, the highest survival rates were detected for Z4 larvae and megalopae at 195.31 and 124.31 μmol m−2 s-1, respectively, indicating a decline in the light requirement. Although the Z2 and Z4 larvae were found to develop faster at a light intensity of 195.31 μmol m−2 s-1 (P < 0.05), no significant differences were found among the treatments at the end of the experiment (P> 0.05). In conclusion, the results show that P. trituberculatus needs more lighting than other crab species, and the light requirement declines as the zoeal and megalopal larvae develop into young crabs. |
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| Keywords: | Swimming crab LED Full spectrum Survival |
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