Impact of substrate moisture content on growth and metabolic performance of black soldier fly larvae
| Autor: | Emil Juel Zeuner, Niels Thomas Eriksen, Søren Heidelbach, Simon Bahrndorff, Morten Eneberg Nielsen, Nicolai Sundgaard Bekker, Sofie Zacho Vestergaard, Marie Riisgaard-Jensen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Hermetia illucens
020209 energy Microorganism chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 01 natural sciences Animal science Dry weight Respiration 0202 electrical engineering electronic engineering information engineering Animals SDG 2 - Zero Hunger Waste Management and Disposal Water content 0105 earth and related environmental sciences Moisture biology Diptera Net growth efficiency biology.organism_classification Animal Feed Substrate (marine biology) CO Microbial activity chemistry Larva Carbon |
| Zdroj: | Bekker, N S, Heidelbach, S, Vestergaard, S Z, Nielsen, M E, Riisgaard-Jensen, M, Zeuner, E J, Bahrndorff, S & Eriksen, N T 2021, ' Impact of substrate moisture content on growth and metabolic performance of black soldier fly larvae ', Waste Management, vol. 127, pp. 73-79 . https://doi.org/10.1016/j.wasman.2021.04.028 |
| ISSN: | 0956-053X |
| Popis: | Substrate moisture content is an important but not well-understood variable in production and waste reduction processes that involves black soldier fly (BSF) larvae. The purpose of this paper is to characterise growth and metabolic performance of BSF larvae on substrate moisture contents from 45 to 85%. Larvae developed into prepupae only at 45–75% substrate moisture content. Within this interval, the maximal specific growth rate was highest (0.73 day−1), the growth period shortest (13 days), and the maximal dry weight lowest (88 mg) at 45% moisture content. Differences in cost of growth and maintenance were not observed at the different substrate moisture contents, and differences in larval performance were likely associated to differences in co-occurring microbial activities. As much as 22% of the substrate carbon was emitted as CO2 at 45% moisture content by microorganisms, measured as the difference between total respiration and larval respiration, whereas microbial CO2 production amounted to only 3% of the substrate carbon at 75% moisture content. As consequence of the high specific growth rate and short growth phase, the overall net growth efficiency was higher at 45% moisture content (0.62) than at 75% moisture content (0.52). Overall, the metabolic performance of the BSF larvae was insensitive to differences in substrate moisture content. Their performance was, however indirectly affected by the substrate moisture content due to differences in co-occurring microbial processes in the substrate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect