Klammsteiner Thomas, Heussler Carina D, Insam Heribert, Schlick-Steiner Birgit C, Steiner Florian M
Universität Innsbruck, Department of Ecology, Technikerstrasse 25, 6020 Innsbruck, Tyrol, Austria.
BioTreat GmbH, Technikerstrasse 21, 6020 Innsbruck, Tyrol, Austria.
iScience. 2025 May 30;28(7):112794. doi: 10.1016/j.isci.2025.112794. eCollection 2025 Jul 18.
Industrial insect farming has potential for converting low-value organic waste into nutrient-rich insect biomass, producing valuable by-products like organic fertilizers. However, a better understanding of density-related thermogenesis and microbial dynamics is needed to enhance standardization and bridge gaps between laboratory and industry needs. This lab-scale study focuses on the black soldier fly (), which exhibits thermogenesis that intensifies with larval population size and its natural crowding behavior. Using high-resolution temperature monitoring and biomolecular methods, we found that doubling larval density (0, 1.25, 2.5, and 5 larvae/cm) increased temperatures by 0.6°C-2.4°C, depending on the treatment. Adding potassium sorbate altered microbial profiles, increasing and decreasing , while promoting lactic acid bacteria. Density also impacted pH, water content, dry matter, volatile solids, and ash in the substrate. Our findings provide essential insights into managing microbial and thermal dynamics, offering valuable information for optimizing and standardizing conditions in rearing trials.
工业昆虫养殖有潜力将低价值有机废物转化为营养丰富的昆虫生物质，生产有机肥料等有价值的副产品。然而，需要更好地理解与密度相关的产热和微生物动态，以提高标准化程度，并弥合实验室需求与行业需求之间的差距。这项实验室规模的研究聚焦于黑水虻，它表现出产热现象，且产热随幼虫种群规模及其自然拥挤行为而增强。通过高分辨率温度监测和生物分子方法，我们发现，将幼虫密度加倍（0、1.25、2.5和5只幼虫/平方厘米）会使温度升高0.6°C至2.4°C，具体取决于处理方式。添加山梨酸钾改变了微生物分布，增加了[具体微生物名称1]并减少了[具体微生物名称2]，同时促进了乳酸菌的生长。密度还影响了基质的pH值、含水量、干物质、挥发性固体和灰分。我们的研究结果为管理微生物和热动态提供了重要见解，为优化和标准化饲养试验条件提供了有价值的信息。
