Survival and development strategy of starved early-stage-zoeae of five amphidromous shrimp species in the genus Caridina under different salinity and temperature conditions

• Published in: Hydrobiologia 2023-01, Vol.850 (1), p.137-150
• Main Authors: Hamasaki, Katsuyuki, Kawakami, Yohei, Kondo, Shuji, Sanda, Tetsuya, Dan, Shigeki
• Format: Article
• Language: English
• Subjects: Biomedical and Life Sciences; Breeding; Caridina; Creeks & streams; Development strategies; Developmental stages; Ecology; Foods; Fresh water; Freshwater; Freshwater & Marine Ecology; Freshwater crustaceans; Freshwater environments; Hatching; Headwaters; Inland water environment; Laboratory experimentation; Larvae; Larval development; Larval stage; Life Sciences; Metabolism; Molting; Moulting; Primary Research Paper; Rivers; Saline environments; Salinity; Salinity effects; Shellfish; Shrimps; Streams; Survival; Temperature; Temperature dependence; Temperature requirements; Zoeae; Zoology
• ISSN: 0018-8158; 1573-5117
• DOI: 10.1007/s10750-022-05050-0

Amphidromous freshwater shrimps require saline environments for larval development. Lecithotrophic larval development trait may be selected in amphidromous shrimp species that inhabit the upper portions of rivers or streams, in which breeding and larval hatching occur. Thus, the newly hatched larvae require a relatively longer period for downstream transport in food-limited freshwater environments until they reach the sea. We tested this hypothesis through laboratory experiments using first stage zoeae of five Caridina species with different longitudinal distributions in the rivers or streams. The first stage zoeae were cultured without foods under 25 combinations of different salinity (0, 8.5, 17, 25.5, and 34 ppt) and temperature (20, 23, 26, 29, and 32 °C) levels. The first stage zoeae of C. leucosticta , C. serratirostris , and C. typus that inhabit lower reaches did not moult, whereas those of C. multidentata and C. prashadi that inhabit middle and upper reaches or headwaters moulted to the second stage zoeae at above 8.5 or 17 ppt salinity conditions. Thus, our findings highlight the salinity-dependent lecithotrophic development in amphidromous shrimps inhabiting the upper portions of rivers or streams. Larval survival and development strategies are discussed in terms of salinity- and temperature-dependent metabolism.