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Housefly (Musca domestica) Larvae Preparations after Removing the Hydrophobic Fraction Are Effective Alternatives to Fish Meal in Aquaculture Feed for Red Seabream (Pagrus major)

1
Graduate School of Agriculture, Ehime University, 3-5-7, Tarumi, Matsuyama, Ehime 790-8566, Japan
2
South Ehime Fisheries Research Center, Ehime University, 1289-1, Funakoshi, Ainan, Ehime 798-4292, Japan
3
Department of Global Environment Studies, Faculty of Environmental Studies, Hiroshima Institute of Technology, 2-1-1 Miyake, Saeki, Hiroshima 731-5193, Japan
*
Author to whom correspondence should be addressed.
Received: 1 April 2019 / Revised: 1 June 2019 / Accepted: 5 June 2019 / Published: 27 June 2019
Insects are an attractive alternative to fish meal (FM) as a sustainable protein source in aquaculture feed that does not negatively impact the marine ecosystem. Despite housefly (Musca domestica) larvae having adequacy of amino acid profiles, they have sometimes been reported to be inferior to FM, especially for marine carnivorous fish species. Here, we report that the removal of the hydrophobic fractions from housefly larvae enables significant replacement of FM in the diet of the red seabream (Pagrus major). In a feeding trial, housefly (HF) larvae that had the hydrophobic fraction removed as a complete substitution for 70% FM produced satisfactory growth. However, HF larvae that were supplemented with the hydrophobic fraction resulted in significant growth reduction. Growth recovery was incomplete by supplementation of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) to undefatted HF larvae, being equivalent to that of fatty acid content with a control diet. Moreover, fish with a dietary intake of catechol identified from the hydrophobic fraction of the HF showed growth reduction and morphological alterations in the intestine. Our findings indicate that the hydrophobic fraction from HF larvae contains a negative factor for fish growth and eliminating the fraction from HF larvae is thought to be an important process for sustainable aquaculture. View Full-Text
Keywords: sustainable aquaculture; fish meal replacement; insect for feed; catechol sustainable aquaculture; fish meal replacement; insect for feed; catechol
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MDPI and ACS Style

Hashizume, A.; Ido, A.; Ohta, T.; Thiaw, S.T.; Morita, R.; Nishikawa, M.; Takahashi, T.; Miura, C.; Miura, T. Housefly (Musca domestica) Larvae Preparations after Removing the Hydrophobic Fraction Are Effective Alternatives to Fish Meal in Aquaculture Feed for Red Seabream (Pagrus major). Fishes 2019, 4, 38. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes4030038

AMA Style

Hashizume A, Ido A, Ohta T, Thiaw ST, Morita R, Nishikawa M, Takahashi T, Miura C, Miura T. Housefly (Musca domestica) Larvae Preparations after Removing the Hydrophobic Fraction Are Effective Alternatives to Fish Meal in Aquaculture Feed for Red Seabream (Pagrus major). Fishes. 2019; 4(3):38. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes4030038

Chicago/Turabian Style

Hashizume, Atsushi, Atsushi Ido, Takashi Ohta, Serigne T. Thiaw, Ryusaku Morita, Munenori Nishikawa, Takayuki Takahashi, Chiemi Miura, and Takeshi Miura. 2019. "Housefly (Musca domestica) Larvae Preparations after Removing the Hydrophobic Fraction Are Effective Alternatives to Fish Meal in Aquaculture Feed for Red Seabream (Pagrus major)" Fishes 4, no. 3: 38. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes4030038

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