AQUA 2024

August 26 - 30, 2024

Copenhagen, Denmark

EFFECTS OF COMMERCIAL MICROALGAL FEEDS ON GROWTH PERFORMANCE, AMINO ACID AND FATTY ACID COMPOSITIONS OF MEALWORM Tenebrio molitor

Kamil Mert Eryalçin1* and Melek Isinibilir Okyar2

1 Aquaculture and Fish Diseases Department, Faculty of Aquatic Sciences, Istanbul University,

Kalenderhane Mahallesi, Onalti Mart Sehitleri Caddesi, No: 2 P.K 34134, Vezneciler, Fatih, Istanbul,

Türkiye.

2 Department of Marine Biology, Faculty of Aquatic Sciences, Istanbul University, Kalenderhane

Mahallesi, Onalti Mart Sehitleri Caddesi, No: 2 P.K 34134, Vezneciler, Fatih, Istanbul, Türkiye.

E-mail: eryalcin@istanbul.edu.tr



In order to sustainable aquaculture

production, fishmeal and fishoil must be

reduced and/or replaced by several

terrestrial and marine sources. Among

alternative protein sources, mealworm

(Tenebrio molitor) is one of the most

promising animal with including high

protein contents. In this study, we

investigated the effect of different

microalgae powder products

(Algamac3050® (dried Schizocthytrium

sp.), Algome® (dried Schizocthytrium sp.),

Naturiga® (dried Spirulina platensis),

ProteinPlus®, AlgomeGrow® (dried

Chlorella sp.)) on culture performance,

fatty acids and amino acids compositions of

mealworm. Mealworms were fed during 21

days under laboratory conditions. The

culture box were filled one cm of feed depth

and kept constant dark (0 h L, 24 h D)

conditions. Total lenght and wet weight

were measured every 7 days of culture.

Mealworm group fed control diet showed

similar total lenght with mealworm fed

Algome® diet and significantly higher than

other groups at the end of the experiment

(p<0.05) (Fig.1). Wet weight of mealworms

were enhanced by all diets except

ProteinPlus® diet at 7 days of culture,

however, this trend was changed at the end

of the experiment (Fig.2). On the other

hand, Ʃ n-3 HUFAs (ARA, EPA and DHA)

levels were increased by Algamac3050®

(1.39%), Algome® (1.36%) and

ProteinPlus® (1.02%) diets. Whereas, total

essential amino acid compositions were

enhanced by AlgomeGrow® diet (244.7 mg.

g-1). In conclusion, AlgomeGrow® diet can

be good option for mealworm culture

resulting both amino and fatty acid

accumulation.