| Autor: |
Zihe Zhao, Xiang Li, Yingzhuo Sun, Xiyuan Huang, Jun Ding, Yaqing Chang, Chong Zhao |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Aquaculture Reports, Vol 33, Iss , Pp 101806- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2352-5134 |
| DOI: |
10.1016/j.aqrep.2023.101806 |
| Popis: |
Alarm cues have an inevitable impact on organisms in aquaculture. The present study investigated the effects of alarm cues on the sea cucumber Apostichopus japonicus from behavioral and physiological perspectives. We found that the adhesion time significantly increased in sea cucumbers exposed to alarm cues (P = 0.008), indicating that sea cucumbers do not easily fall off the attachment substance into a harsh environment in seed production. Novelly, this present study clarified that fleeing response of sea cucumbers exposed to alarm cues was driven by tail movement rather than head movement. There was no significant difference in tentacle activity frequency (P = 0.705), indicating that alarm cues would not affect feeding behavior of sea cucumbers. In addition, there was also no significant difference in righting behavior of A. japonicus (P = 0.724), indicating that sea cucumbers probably respond to alarm cues through tube feet rather than tentacles or muscles. We reveal that alarm cues do not affect all but some the behaviors of sea cucumbers. Further, the present study found no significant difference in cortisol concentration (P = 0.583). In contrast, 5-hydroxytryptamine (5-HT) concentration significantly increased in sea cucumbers exposed to alarm cues (P = 0.004). These results suggest that the effect of alarm cues is probably mediated by 5-HT in sea cucumbers. Further, the present study found that the movement speed had a significant decrease in sea cucumbers fed with 3% dietary tryptophan when being exposed to alarm cues (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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