David Deruytter

David Deruytter
Inagro vzw · Department of aquaculture and insect production

PhD biology

About

36
Publications
36,741
Reads
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419
Citations
Introduction
Researcher at Inagro assessing the feasability of the industrial breeding of Black soldier fly larvae on agricultural waste.
Additional affiliations
October 2012 - February 2018
Ghent University
Position
  • PhD Student
Description
  • Assessing the effect of salinity and DOC on Cu accumulation and toxicity in larvae of Mytilus spp.

Publications

Publications (36)
Article
Full-text available
Insect rearing for food and feed has seen a sharp increase in Europe and is expected to grow further. Exploring the potential use of insect by-products like frass is crucial to improving the economic feasibility and circularity of the insect industry. This review study explores the potential uses of frass in agricultural applications by considering...
Article
Full-text available
Interest in the nutrition of the yellow mealworm ( Tenebrio molitor L.) larvae is on the rise, leading to an increase in publications on this topic. The absence of a standard protocol and resulting differences in experimental designs reduces comparability among studies and impedes research on mealworm nutrition. To address this, a consensus standar...
Article
Full-text available
The European Commission’s Circular Economy Action Plan (CEAP) is a cornerstone of the European Green Deal, aiming for transition towards a more sustainable and circular economy by addressing waste reduction and promoting recycling of low-opportunity cost biomass. The EU Horizon 2020 project SUStainable INsect CHAIN (SUSINCHAIN) aligns with these go...
Article
Black soldier fly (BSF), Hermetia illucens , is one of the most explored insect species mass-produced for feed, but also for food and technical purposes. Considering the rapid developments in both research and industrial production of this insect species in the last decade, this review intends to reflect on the most current scientific insights and...
Article
Full-text available
The mediterranean flour moth ( Ephestia kuehniella Zeller (Lepidoptera: Pyralidae), is a common pest species in mealworm farms as they thrive in a similar environment and on similar feedstock as the mealworm. Although the larvae of the moth do not directly affect the mealworm larvae, they do compete for feed. Furthermore, the webbing may cause tech...
Article
Full-text available
Black soldier fly (Hermetia illucens) is considered a farmed animal. The larvae live in a moist substrate, which leads to a complex interaction with the microbial community. As such the combined metabolism of the insects and that of the microbial community can ultimately lead to all sorts of emissions such as ammonia and greenhouse gases. For ammon...
Article
Full-text available
To meet the increased future needs in insect Processed Animal Proteins PAPs, insect sector has to optimize the mass rearing of insects. That being the case, a means to tackle this growing demand for insects is to invest in breeding strategies aiming for the production of hybrids with improved economically and biologically valuable traits. In this f...
Article
Full-text available
There is a growing interest in the ability of black soldier fly (Hermetia illucens) larvae (BSFL) to convert low-value organic residues into high-value products. This leads to more publications with conversion data for various organic resources. However, these results are rarely comparable between laboratories due to differences in study protocols....
Article
Full-text available
Insect farming can be an important tool in the realization of a more sustainable future. With a growing insect industry, animal transportation between and within farms is expected to increase. For Tenebrio molitor, using eggs may be convenient as it eliminates the risk of cannibalism, food shortages and has a low risk of asphyxiation. However, ther...
Article
Full-text available
The diet is one of the most important factors that affect the growth and lifecycle of Tenebrio molitor L. The chemical and the nutritional properties of the mealworms’ diet are being studied thoroughly whereas the physical properties of the diet are almost neglected. This work aims to study the effects of four different particle sizes (0-0.8, 0.8-2...
Article
Full-text available
For optimal growth, Tenebrio molitor needs both dry feed and wet feed. Storing dry feed is not a problem, but storing wet feed over a prolonged period is more challenging due to spoilage. It could be stored in a refrigerated room, but this process is energy consuming and therefore increases the price of production. Another option is to ferment the...
Conference Paper
Insect diet impacts insect growth, therefore a lot of recent research has focused on the evaluation of alternative insect feeds. In the case of the yellow mealworm, Tenebrio molitor L., the diet comprises of both a dry feed and a wet feed. The latter serves mainly as a moisture source, as it has been shown that moisture availability enhances larval...
Article
Full-text available
Tenebrio molitor larvae live, at least partially, inside their feed. Hence, they do not live on a 2D plane but in a 3D environment. However, previous studies mainly focused on the optimal number of larvae for a given surface area, not the available volume. The goal of this study was to assess the growth and survival of mealworms in a standardized s...
Article
Full-text available
The expected global population growth to 9.7 billion people in 2050 and the significant change in global dietary patterns require an increase in global food production by about 60%. The protein supply for feed and food is most critical and requires an extension in protein sources. Edible insects can upgrade low-grade side streams of food production...
Chapter
In this chapter we address the question how to run a (small to medium-sized) insect farm from a practical perspective. There will be a detailed discussion of the hands-on rearing of four insect species: the yellow mealworm, the black soldier fly, the house cricket, and the migratory locust. For each species, the entire life cycle is discussed as w...
Article
Full-text available
Insect production is generally a monoculture where insects are kept in an enclosed environment with a stable climate to maximise production. To maintain these conditions air treatment is necessary, which results in high operational costs. Combining insect rearing with hydroponic greenhouse cultivation (HGC) of fruit vegetables might offer an opport...
Article
Full-text available
Due to increasing welfare and population, the demand for alternative protein sources, obtained with minimal use of natural resources, is rising in today’s society. Insects have the potential to be used as an alternative protein source since they are considered to be able to convert low-value biomass into high-value components, resulting in opportun...
Presentation
Full-text available
As the insect value chain is evolving towards a large-scale industry, storage and transport of insects as steps between multiple production and processing stages gain importance. In practice, storage and transport strategies should be able to maximally preserve survival of living insects, and (microbiological) quality for killed insects. This study...
Article
Full-text available
An appropriate stocking density is beneficial to run an efficient business and improve animal welfare. In most traditional livestock this is defined as the number of animals per area. However, the larvae of the mealworm (Tenebrio molitor), one of the most important commercial insects, live both on top and inside their feed. In this study we assesse...
Article
During the last decade the insect sector has witnessed a tremendous growth. A lot of scientific knowledge has been accumulated regarding insect production, processing and industrialisation. However, an issue that has been often overlooked is the management of insect pest infestations in insect production plants. Pyralid moths appear to be the most...
Article
Full-text available
Mealworm larvae have the potential to be a future food and feed. One of the difficulties in rearing mealworms efficiently, is their need for both dry and wet feed. Extensive research has been done on dry feed and distributing this feed is easy with the existing technology. However, the wet feed (frequently chopped up vegetables) comes with several...
Poster
Full-text available
For scientific experiments with mealworm the following conditions are considered optimal: a uniform temperature of 27°C with a relative humidity (RH) of 70% and daily addition of a moisture source like carrot. However, little is known about specific growth conditions for mealworm hatchlings and their needs during the first weeks. Nevertheless, in o...
Poster
Full-text available
The choice of feed is amongst the most important decisions a farmer has to make. For mealworms, wheat bran in combination with carrots is commonly used as a diet. Although this feed works well, the nutritional composition is not optimal. It is expected that large gains can be made in terms of growth rate, maximum weight and feed conversion rate if...
Article
Full-text available
In an industrialised mealworm farm it is important to maximise the production and to know the number of mealworms in each container as early as possible in a fast and reliable way. Two experiments were performed. The first experiment assessed the influence of the number of beetles, crate surface area and oviposition time on the number produced meal...
Poster
Full-text available
Rearing insects on an industrial scale requires a constant and reliable source of eggs or newborn larvae. These can either be bought from a hatchery or, what is currently most common, bred on site. In any case, the space, labor and energy needed to breed them should be minimized. It is known that black soldier fly do need fairly specific climatic c...
Article
Little is known about the effect of metal mixtures on marine organisms, especially when exposed to environmentally realistic concentrations. This information is, however, required to evaluate the need to include mixtures in future environmental risk assessment (ERA) procedures. Here, the effect of Cu-Ni binary mixtures on Mytilus edulis larval deve...
Article
To improve the ecological relevance of environmental risk assessment (ERA) we need to improve our understanding of: (1) the influence of environmental conditions on the toxicity of pollutants, and (2) the effect of these factors in combination with possible inter-population variability. In this study the influence of salinity and dissolved organic...
Article
Few studies have considered the effect of temperature on the chronic sensitivity of Daphnia magna to other stressors. The present study investigated the effect of temperature on chronic metal toxicity and whether this effect differed among four different D. magna clones. Life table experiments were performed with copper, zinc and nickel at 15, 20 a...
Article
Full-text available
Recently, a radically new synchrotron radiation-based elemental imaging approach for the analysis of biological model organisms and single cells in their natural in vivo state was introduced. The methodology combines optical tweezers (OT) technology for non-contact laser-based sample manipulation with synchrotron radiation confocal X-ray fluorescen...
Article
Predicting copper (Cu) toxicity in marine and estuarine environments is challenging because of the influence of anions on Cu speciation, competition between Cu(2+) and other cations at the biotic ligand and the effect of salinity on the physiology of the organism. In the present study the combined effect of salinity and dissolved organic carbon (DO...
Article
Full-text available
We report on a radically new elemental imaging approach for the analysis of biological model organisms and single cells in their natural, in vivo state. The methodology combines optical tweezers (OT) technology for non-contact, laser-based sample manipulation with synchrotron radiation confocal X-ray fluorescence (XRF) microimaging for the first ti...
Article
Larvae of Mytilus spp. are among the most Cu sensitive marine species. In this study we assessed the combined effect of salinity and dissolved organic carbon (DOC) on Cu accumulation on mussel larvae. Larvae were exposed for 48 hours to three Cu concentrations in each of nine salinity/DOC treatments. Synchrotron radiation X-ray fluorescence was use...
Article
Dispersal and habitat selection are the main factors that affect the distribution of species in spatially structured habitat. Species typically occurring in an aggregated way are supposed to experience dispersal limitation or to be highly selective for specific habitat attributes in their environment. In order to understand the distribution pattern...

Questions

Questions (5)
Question
I'm searching for data regarding the environmental concentration of different metals (Cu, Ni, Zn,...) in the marine. For Europe there are several databases (ICES, Emodnet,...). However, I would like to have information on the waterconcentration in other continents/countries (e.g. North America, Australia, Japan, Africa,...)
Can anyone point me in the right direction (website), or let me know if there are databases that are free to the public?
thanks in advance
Question
To measure the Cu concentration in water I want to use voltammetry. For that I need to adjust the pH of my sample to about 7.8. I normally did this by adding 200µl of HEPES (1 M) and 140µl of NaOH (30%).
Up to last week this went very well, however lately I only have to add 20 µl of NaOH to have a pH of 7.8 and the buffering capacity seems to be completely gone.
Has anyone encountered this before, or has a solution/recommendation?
Question
I'm looking for the best protocol to measure Na/K atpase activity. In peer reviewed articles there are several protocols available so it is difficult to find the "best". Has anyone tried to measure the Na/K atpase activity in a (marine) organisme using several protocols? I'm particularly interested in why some use the ATP-regenerating assay (with NADH) and some measure it directly with ammoniummolybdate. What are the benefits or pitfalls using one or the other.
Furthermore what are the main pitfalls or other important steps in the protocol(s).
Question
Can anyone identify this algae (or fungi) in my picture? It grows like a bright green biofilm in my mysid culture aquaria at 26°C in a salinity of 20 psu with a 16:8 light:dark cycle. I'm mainly interested in if it is a harmful algae or not and maybe treatments to kill it.
Kind regards and thanks in advance

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