Thermal challenge of the Indian shrimpPenaeus indicus

Abstract

This study investigated short‐term effects of increasing water temperature from 27 to 41°C on survival and feed consumption of Penaeus indicus at three different ages: PL25 (postlarvae 25 days old), PL50 and PL90. For each age group, water temperature was maintained at 27°C in the control, but increased to 32, 35, 38 and 41°C at a rate of 1°C every eight hours. The temperature was then kept stable until the end of the 7‐day experiment. Results showed that increasing water temperature affected both survival and feed consumption of the experimental shrimps (p < .01). Survival was highest at 32 and 35°C ranging from 93.8% to 100%, but significantly reduced to 40.0%–81.6% at 38°C. No shrimp survived the 41°C treatment. PL25 were more tolerant to 38–41°C than PL50 and PL90 in terms of survival. Increasing water temperature had no effects on feed consumption of PL25 (p > .05). For PL50 and PL90, feed consumption significantly increased at 38 and 41°C (p < .01) and was similar within the range of 27–35°C. This study suggests that P. indicus in tropical areas can tolerate water temperatures of at least 35°C and should be considered for farming during the summer time.

Pengaruh Umur Terhadap Performa Reproduksi Induk Udang Putih, Penaeus Indicus

“…Namun demikian, produksi mulai menurun setelah tahun 2006 akibat penyakit dan beralihnya pembudidaya ke udang P. vannamei dan P. monodon (Vance & Rothlisberg, 2020). Sebagai species lokal tentunya lebih adaptif terhadap lingkungan perairan di Indonesia, bahkan dilaporkan tahan terhadap temperature tinggi (Hoang et al, 2020) dan toleransi salinitas yang lebar (Yousif, Kumar, and Ali A 2003;Sajeela et al 2019).…”

“…Hal ini relevan dengan hasil uji tantang (tanpa aklimatisasi; 96 jam) bahwa larva P. indicus bertahan dengan baik pada salinitas 5-20 ppt (Karan et al, 2020). Namun demikian pemeliharaan larva udang P. indicus di daerah tropis dapat mentoleransi temperatur hingga 35 o C (Hoang et al, 2020). Umumnya pemeliharaan dan produksi benih dilakukan pada suhu >30% dan salinitas >25 ppt, sehingga diperlukan kajian lanjut terhadap kedua parameter tersebut pada level yang lebih rendah.…”

Effects of temperature on farmed marine polychaete Perinereis helleri and its fatty acid profile

“…Thus, it is more logical to assess temperature effects on P. helleri via accumulated mortality after a defined period of exposure to the target temperature. This approach has been used for research on penaeid shrimps (Hoang et al., 2020; Hoang et al., 2020).…”

Transcriptomic, histological and biochemical analyses of Macrobrachium nipponense response to acute heat stress

“…Additionally, acute or chronic heat stress can cause a lower reproductive molt rate, embryonic development, and hatching success in Macrobrachium rosenbergii (Mohamad et al 2018). More seriously, heat stress leads to a higher mortality rate in crustaceans, besides the rapid heating rate leads to more deaths (Beladjal et al 2008;Hoang et al 2020). Although speci c thermoreceptors have not been identi ed in crustaceans, studies have found that the peripheral nervous system appears to have maintained thermal sensitivity and adaptation independently of the central nervous system (Lagerspetz and Vainio 2006).…”