Stress conditions extend maternal care and delay juvenile development in crayfish  

作　　者：Davinder Kaur Koushik Das Jan Kubec Milos Buric 

机构地区：[1]South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses,Faculty of Fisheries and Protection of Waters,University of South Bohemia in Ceske Budejovice,Zatisí728/II,38925 Vodnany,Czech Republic

出　　处：《Current Zoology》2025年第1期25-32,共8页动物学报(英文版)

基　　金：financially supported by the Grant Agency of the University of South Bohemia No.GAJU 027/2022/Z and 065/2022/Z;made using facilities of the large research infrastructure supported by the Ministry of Education,Youth and Sports of the Czech Republic project CENAKVA(LM2023038).

摘　　要：Maternal care in crayfish has been extensively studied,but little is known of its response to environmental factors.We studied the duration of maternal care and its association with the juvenile development of marbled crayfish Procambarus virginalis in adverse environmental conditions.We exposed females with developmental stage 3 juveniles to environments of low water volume(LW)with food provided,low water volume with no feed(starvation)(LWS),and low water volume without feeding plus an intruder(red swamp crayfish male)(LWSI).A control group with standard water level/feed conditions was included for comparison.Groups were monitored for up to 90 days.The LWS group showed significantly prolonged maternal care(~65 days)as indicated by an extended attachment phase,delayed moulting of mothers(~53 days),and retarded juvenile development.In the LWSI group,conflict precluded extended maternal care.Low use of shelter and feeding was evident under all stress conditions.The results showed that crayfish females modify maternal care in accordance with conditions,providing a longer period of safety for offspring under adverse circumstances.It is possible that the expression of maternal pheromones can manipulate the developmental rate in juveniles,a topic for future research.

关 键 词：COMMUNICATION development marbled crayfish Procambarus virginalis OFFSPRING red swamp crayfish Procambarus clarkii 

分 类 号：Q95[生物学—动物学]