Open AccessEffect of diets on carotenoid content, body coloration, biochemical composition and spermatophore quality in the “red cherry” shrimp Neocaridina davidi (Caridea, Atyidae)
Author(s) -
Tomas Ana Laura,
Sganga Daniela Eliana,
Marciano Agustina,
López Greco Laura Susana
Publication year - 2020
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1111/anu.13076
Subject(s) - biology , carotenoid , spermatophore , shrimp , composition (language) , ornamental plant , botany , food science , zoology , ecology , linguistics , philosophy , sperm
Abstract In aquarium industry trade markets, Neocaridina davidi , the “red cherry” shrimp, is one of the most attractive ornamental shrimps due to the striking reddish coloration of females. Five commercial diets formulated for ornamental species were evaluated over a 90‐day period in N. davidi males and females, based on survival, biochemical composition, body weight, carotenoid content and body coloration. Furthermore, histological and histochemical analyses of the male reproductive system were performed to evaluate the spermatophore quality. In all treatments, survival was >80%, and protein content was similar in both female and male shrimps. Lipid content was higher in females and males fed on a diet having the highest lipid level. Carotenoid content was higher and body coloration was brighter in females and males fed on a diet containing the highest carotenoid level. Histological and histochemical analyses of the spermatophore structure and composition showed no differences among diets, suggesting that the five commercial diets are adequate for satisfactory growth and spermatophore quality of N. davidi . The diverse sources and quantities of carotenoids in the highest carotenoid level diet render it more suitable for colour enhancement of this species.