Hermetia illucens (L.) larvae as chicken manure management tool for circular economy

Bortolini, Sara; Macavei, Laura Ioana; Saadoun, Jasmine Hadj; Foca, Giorgia; Ulrici, Alessandro; Bernini, Fabrizio; Malferrari, Daniele; Setti, Leonardo; Ronga, Domenico; Maistrello, Lara

doi:10.1016/j.jclepro.2020.121289

Cited by 92 publications

(81 citation statements)

References 48 publications

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“…In the present study, a circular economic strategy was implemented to improve sustainability in agriculture. The mulching performance and biodegradability of an innovative bioplastic obtained from BSF prepupae reared on chicken manure [26] was assessed in a short potting experiment and compared with mulching films available on the market, based on polyethylene and corn starch ( Figure 1).…”

Section: Resultsmentioning

confidence: 99%

“…Recently, the exploitation of poultry manure by rearing larvae of a scavenging insect, the black soldier fly (BSF) Hermetia illucens (Diptera, Stratiomyidae), was proposed [26]. The larvae, after becoming prepupae, were fractionated to obtain proteins [27].…”

Section: Methodsmentioning

confidence: 99%

“…The larvae, after becoming prepupae, were fractionated to obtain proteins [27]. These proteins were investigated as base components for the rational design of biodegradable bioplastics, to be used for agricultural purposes [28], whereas the residual larval frass was used as a soil improver [26,29].…”

Section: Methodsmentioning

confidence: 99%

“…In the present study, for the preparation of the innovative protein-based film (PBF), BSF larvae were reared on an optimized mixture of chicken manure, water and zeolite [26], and the proteins were obtained after proper fractionation of the prepupae [27]. PBF was obtained by mixing 0.25 g of BSF proteins and glycerol (0.21 g) in distilled water (3.25 g), adjusted to pH 10 with NaOH (1 N) through a wet casting technique [30].…”

Section: Methodsmentioning

confidence: 99%

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Bioplastic Film from Black Soldier Fly Prepupae Proteins Used as Mulch: Preliminary Results

et al. 2020

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A protein-based film (PBF), obtained from black soldier fly prepupae proteins, was assessed for its agronomic performance as mulch. PBF was investigated in a potting experiment and compared with Mater-Bi (MB), polyethylene (PE) and bare soil. During the experiment, degraded surface area, weight and thickness of the film, water evaporated from the pot, and the soil microbiological content (SMC) were recorded. In addition, films were buried to assess their biodegradability and impact on SMC. During the mulching process, the PBF showed a significant degradation. In terms of evaporated water, the PBF performed similarly to MB and worse than PE. Regarding SMC, film of any nature caused an increase in the Clostridia spp. and a decrease of total mesophilic aerobic bacteria and fungi contents. When buried, only PBF recorded a faster biodegradability, showing a reduction of surface area, thickness and weight. PBF and MB highlighted a significant increase in contents of Clostridia spp., mesophilic aerobic bacteria and fungi. Our results reported, for the first time, the valorization of black soldier fly (BSF) prepupae proteins as a biodegradable film for mulching purposes. However, further study is needed to reduce the PBF biodegradability and allow it to be used for the most important mulched crops.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Bioplastic Film from Black Soldier Fly Prepupae Proteins Used as Mulch: Preliminary Results

et al. 2020

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“…Currently, composting represents one of the most common methods used to valorize different organic by-products allowing their utilization as a soil amendment [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Combined Effects of Dewatering, Composting and Pelleting to Valorize and Delocalize Livestock Manure, Improving Agricultural Sustainability

et al. 2020

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An agronomic strategy to mitigate climate change impact can be the build-up of soil organic carbon. Among agronomic management approaches, the administration of organic fertilizers like livestock manure represents an effective strategy to increase soil organic carbon. However, livestock manure usually contains a high amount of water, reducing its sustainable delocalization and impacting on greenhouse gas emissions and nutrient leaching. Furthermore, the possible presence of weed seeds and harmful microorganisms could reduce the agronomic value of the manure. To overcome these issues, the combined effects of dewatering, composting and pelleting were investigated on livestock manure to produce sustainable organic fertilizers. Our results showed that composting and pelleting can represent a feasible and sustainable solution to reduce the potential risks related to the presence of weed seeds and harmful bacteria, concentrating nutrients and allowing a sustainable valorization and delocalization of the livestock manure. In addition, the processed manures were assessed as fertilizers in the growing medium (GM), displaying an increase in water retention and nutrient availability and a decrease of GM temperature and weed seed emergences. However, further study is needed to validate, both in open field and greenhouse productions, the effects of the proposed fertilizers in real cropping systems.

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Temperature during pupal development affects hoverfly developmental time, adult life span, and wing length

Daňková,

Nicholas,

Nordström

2023

Ecology and Evolution

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Hoverflies (Diptera, Syrphidae) are cosmopolitan, generalist flower visitors and among the most important pollinators after bees and bumblebees. The dronefly Eristalis tenax can be found in temperate and continental climates across the globe, often synanthropically. Eristalis tenax pupae of different generations and different climate zones are thus exposed to vastly different temperatures. In many insects, the ambient temperature during the pupal stage affects development, adult size, and survival; however, the effect of developmental temperature on these traits in hoverflies is comparatively poorly understood. We here reared E. tenax pupae at different temperatures, from 10°C to 25°C, and quantified the effect on adult hoverflies. We found that pupal rearing at 17°C appeared to be optimal, with high eclosion rates, longer wings, and increased adult longevity. Rearing temperatures above or below this optimum led to decreased eclosion rates, wing size, and adult survival. Similar thermal dependence has been observed in other insects. We found that rearing temperature had no significant effect on locomotor activity, coloration or weight, despite evidence of strong sexual dimorphism for each of these traits. Our findings are important as hoverflies are key pollinators, and understanding the effects of developmental temperature could potentially be useful for horticulture.

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Hermetia illucens (L.) larvae as chicken manure management tool for circular economy

Cited by 92 publications

References 48 publications

Bioplastic Film from Black Soldier Fly Prepupae Proteins Used as Mulch: Preliminary Results

Bioplastic Film from Black Soldier Fly Prepupae Proteins Used as Mulch: Preliminary Results

Combined Effects of Dewatering, Composting and Pelleting to Valorize and Delocalize Livestock Manure, Improving Agricultural Sustainability

Temperature during pupal development affects hoverfly developmental time, adult life span, and wing length

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