Pub Date : 2023-12-08DOI: 10.1163/23524588-00001052
T. Sheileja, K.M. Singh, T. Shantibala, L.K. Mishra, S. M. Haldhar
The Asian giant hornet, Vespa magnifica is an edible insect fondly eaten in larval and adult stage in maximum ethnic communities of the Northeast India especially in Manipur state. The nutritional and anti-nutritional aspects of V. magnifica revealed high protein (31.1%, 38.4%), fat (22.0%, 8.13%), carbohydrates (1.67%, 0.72%) and fibre (0.69%, 4.34%) content in both larval and adult stage respectively. The results exhibited that consumption of 100 gram of V. magnifica in larval and adult stage provided optimal amount of energy (329.1 and 229.7 kcal, respectively). Iron, potassium, calcium, sodium, and phosphorus are the most prevalent minerals found in the edible hymenopteran that can be used as supplementary food to human diets. The IC50% of adults (0.701 mg/ml) exhibited lower value than larvae (0.813 mg/ml) expressing its stronger antioxidant properties than larval hymenopteran. Low levels of anti-nutritional components such as phenol (38.7 and 30.3 mg/g) and tannin (50.0 and 24.5 mg/g) have established the insects’ non-toxic character when taken as part of a human diet. The insect is widely available in Manipur local markets but at a very high price and great demand. It has the potential to support economic upliftment, nutrition and food security along with sustainable impact on environment.
{"title":"Nutritional composition and safety aspects of Asian giant hornet, Vespa magnifica (Hymenoptera: Vespidae): commonly consumed edible insect in Manipur, North East India","authors":"T. Sheileja, K.M. Singh, T. Shantibala, L.K. Mishra, S. M. Haldhar","doi":"10.1163/23524588-00001052","DOIUrl":"https://doi.org/10.1163/23524588-00001052","url":null,"abstract":"\u0000The Asian giant hornet, Vespa magnifica is an edible insect fondly eaten in larval and adult stage in maximum ethnic communities of the Northeast India especially in Manipur state. The nutritional and anti-nutritional aspects of V. magnifica revealed high protein (31.1%, 38.4%), fat (22.0%, 8.13%), carbohydrates (1.67%, 0.72%) and fibre (0.69%, 4.34%) content in both larval and adult stage respectively. The results exhibited that consumption of 100 gram of V. magnifica in larval and adult stage provided optimal amount of energy (329.1 and 229.7 kcal, respectively). Iron, potassium, calcium, sodium, and phosphorus are the most prevalent minerals found in the edible hymenopteran that can be used as supplementary food to human diets. The IC50% of adults (0.701 mg/ml) exhibited lower value than larvae (0.813 mg/ml) expressing its stronger antioxidant properties than larval hymenopteran. Low levels of anti-nutritional components such as phenol (38.7 and 30.3 mg/g) and tannin (50.0 and 24.5 mg/g) have established the insects’ non-toxic character when taken as part of a human diet. The insect is widely available in Manipur local markets but at a very high price and great demand. It has the potential to support economic upliftment, nutrition and food security along with sustainable impact on environment.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"40 41","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138588535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-05DOI: 10.1163/23524588-00001006
M. Gold, K. Niermans, F. Jooste, L. Stanford, F. Uwamahoro, M. Wanja, T. Veldkamp, A. Sanderson, V. Dos Santos Nunes, A. Mathys, H. van der Fels-Klerx, E. F. Hoek-van den Hil, K. Nishimwe
Globally, large amounts of various crops such as cereals, oilseeds, nuts and spices are contaminated with mycotoxins during pre-harvest, postharvest handling, processing and/or storage. Mycotoxin contamination results into economic and health issues, and valorisation options of contaminated crops are urgently needed. The aim of this research was to evaluate whether quality feed and fertilizer can be safely produced from naturally mycotoxin contaminated crops using black soldier fly larvae (BSFL, Hermetia illucens L.) under realistic field conditions in East Africa. Naturally mycotoxin contaminated maize (corn; Zea mays L.) was used as a model due its prevalence as food and feed and utilized by BSFL together with local agri-food by-products at a research facility in Rwanda. To assess the influence of the initial maize mycotoxin contamination and maize inclusion, larval diets with three mycotoxin contamination levels and two maize inclusion levels were tested. BSFL were tolerant against the high mycotoxin concentrations (e.g. 99.4 μg aflatoxin B1 kg dry mass-1) as the presence of mycotoxins in the substrate did not affect BSFL mass at harvest. Product safety was assessed by quantifying the presence of 38 common and emerging mycotoxins and metabolites in the maize, substrates and BSFL products (e.g. larvae and frass). The results show that it is possible to produce feed and fertilizer with BSFL considered safe within the European Union and East African legal limits with maize contaminated with mycotoxins typical for East Africa. Thereby, this research works towards the safe recycling of nutrients from mycotoxin contaminated maize within the food system in East Africa and beyond.
{"title":"Conversion of mycotoxin-contaminated maize by black soldier fly larvae into feed and fertilizer","authors":"M. Gold, K. Niermans, F. Jooste, L. Stanford, F. Uwamahoro, M. Wanja, T. Veldkamp, A. Sanderson, V. Dos Santos Nunes, A. Mathys, H. van der Fels-Klerx, E. F. Hoek-van den Hil, K. Nishimwe","doi":"10.1163/23524588-00001006","DOIUrl":"https://doi.org/10.1163/23524588-00001006","url":null,"abstract":"\u0000Globally, large amounts of various crops such as cereals, oilseeds, nuts and spices are contaminated with mycotoxins during pre-harvest, postharvest handling, processing and/or storage. Mycotoxin contamination results into economic and health issues, and valorisation options of contaminated crops are urgently needed. The aim of this research was to evaluate whether quality feed and fertilizer can be safely produced from naturally mycotoxin contaminated crops using black soldier fly larvae (BSFL, Hermetia illucens L.) under realistic field conditions in East Africa. Naturally mycotoxin contaminated maize (corn; Zea mays L.) was used as a model due its prevalence as food and feed and utilized by BSFL together with local agri-food by-products at a research facility in Rwanda. To assess the influence of the initial maize mycotoxin contamination and maize inclusion, larval diets with three mycotoxin contamination levels and two maize inclusion levels were tested. BSFL were tolerant against the high mycotoxin concentrations (e.g. 99.4 μg aflatoxin B1 kg dry mass-1) as the presence of mycotoxins in the substrate did not affect BSFL mass at harvest. Product safety was assessed by quantifying the presence of 38 common and emerging mycotoxins and metabolites in the maize, substrates and BSFL products (e.g. larvae and frass). The results show that it is possible to produce feed and fertilizer with BSFL considered safe within the European Union and East African legal limits with maize contaminated with mycotoxins typical for East Africa. Thereby, this research works towards the safe recycling of nutrients from mycotoxin contaminated maize within the food system in East Africa and beyond.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"85 23","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138600256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-04DOI: 10.1163/23524588-20230180
A. Dörper, G. Gort, T. Veldkamp, M. Dicke
Feeding poultry with live insect larvae stimulates natural behaviour and improves poultry welfare, when poultry has prolonged or frequent access to the larvae. But how to feed live insect larvae to poultry without labour-intensive hand feeding? This paper focusses on the development of a device that overcomes this challenge. A circular device was designed with eight storage compartments, which were filled once a day with live Black Soldier Fly (BSF) larvae (Hermetia illucens). A motor controlled the timed rotation of the device multiple times per day, initiating the release of larvae when a compartment was pushed over an outlet. Every 60 minutes, a new compartment was pushed over the outlet, which means that after eight hours all compartments are emptied. To achieve a gradual release of larvae per storage compartment the device was timed to move every 30 minutes half a storage compartment forward. The larval release was recorded every 5 minutes within the 60 minutes. The device was tested at 18 °C, 24 °C and 30 °C, with 3.4 g and 129.8 g BSF larvae per compartment, and with three different outlet types of different size and shape. The larval release rate was influenced by temperature, amount of larvae, outlet type, and interactions between these factors. After placing a new compartment above the outlet, 50% of the larvae were on average released within 6 minutes. After 60 minutes, on average only 0.5% larvae remained in the compartment. Outlets with wider openings are preferred over the outlet with the narrowest outlet because less larvae remained in the compartments. The dispenser fulfilled the low-labour-intensity requirement as filling was only necessary once a day, the release of different amounts of larvae was achieved over several hours. This automatic dispenser provides a valuable tool to investigate the behaviour of poultry fed with live BSF larvae.
当家禽长时间或频繁接触昆虫幼虫时，用活昆虫幼虫喂养家禽可刺激其自然行为并改善家禽福利。但是，如何在不需要人工喂养的情况下，将活的昆虫幼虫喂给家禽呢?本文的重点是开发一种克服这一挑战的设备。设计了一个圆形装置，有8个储存隔间，每天一次填充活的黑兵蝇(Hermetia illucens)幼虫。一个马达每天多次控制装置的定时旋转，当一个隔间被推过出口时，就会开始释放幼虫。每隔60分钟，一个新的车厢就会被推过出口，这意味着8小时后，所有的车厢都会被清空。为了使每个储存舱逐渐释放幼虫，该装置每30分钟向前移动半个储存舱。60分钟内每5分钟记录一次幼虫释放量。实验温度分别为18°C、24°C和30°C，每个隔间分别添加3.4 g和129.8 g BSF幼虫，设置三种不同大小和形状的出口类型。幼虫释放率受温度、幼虫数量、出口类型及其相互作用的影响。在出口上方放置新隔间后，平均6分钟内释放50%的幼虫。60分钟后，平均只有0.5%的幼虫留在隔间里。开口较宽的出口比开口最窄的出口更受欢迎，因为在隔室中停留的幼虫较少。该分配器满足了低劳动强度的要求，因为每天只需要灌装一次，在几个小时内释放不同数量的幼虫。这种自动分配器提供了一种有价值的工具来调查用活的BSF幼虫喂养的家禽的行为。
{"title":"Automatic dispenser of live Black Soldier Fly larvae to feed poultry","authors":"A. Dörper, G. Gort, T. Veldkamp, M. Dicke","doi":"10.1163/23524588-20230180","DOIUrl":"https://doi.org/10.1163/23524588-20230180","url":null,"abstract":"\u0000Feeding poultry with live insect larvae stimulates natural behaviour and improves poultry welfare, when poultry has prolonged or frequent access to the larvae. But how to feed live insect larvae to poultry without labour-intensive hand feeding? This paper focusses on the development of a device that overcomes this challenge. A circular device was designed with eight storage compartments, which were filled once a day with live Black Soldier Fly (BSF) larvae (Hermetia illucens). A motor controlled the timed rotation of the device multiple times per day, initiating the release of larvae when a compartment was pushed over an outlet. Every 60 minutes, a new compartment was pushed over the outlet, which means that after eight hours all compartments are emptied. To achieve a gradual release of larvae per storage compartment the device was timed to move every 30 minutes half a storage compartment forward. The larval release was recorded every 5 minutes within the 60 minutes. The device was tested at 18 °C, 24 °C and 30 °C, with 3.4 g and 129.8 g BSF larvae per compartment, and with three different outlet types of different size and shape. The larval release rate was influenced by temperature, amount of larvae, outlet type, and interactions between these factors. After placing a new compartment above the outlet, 50% of the larvae were on average released within 6 minutes. After 60 minutes, on average only 0.5% larvae remained in the compartment. Outlets with wider openings are preferred over the outlet with the narrowest outlet because less larvae remained in the compartments. The dispenser fulfilled the low-labour-intensity requirement as filling was only necessary once a day, the release of different amounts of larvae was achieved over several hours. This automatic dispenser provides a valuable tool to investigate the behaviour of poultry fed with live BSF larvae.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"15 4","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138602842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-28DOI: 10.1163/23524588-20230155
N. Meijer, M.W. Bosch, T. de Rijk, P. Zomer, H.J. van der Fels-Klerx, Joop J. A. Van Loon
Edible insects such as lesser mealworm (Alphitobius diaperinus) are a promising new protein source for food and feed. The feed substrate on which these insects are reared may be contaminated with residues of insecticides originating from agricultural products that may impact insect performance. In this study, two generations of A. diaperinus were chronically exposed to spinosad (2.0 and 0.2 mg/kg) and imidacloprid (0.1 and 0.01 mg/kg) in the substrate. The aim was to determine sublethal effects on performance measures (total biomass (yield), mean individual weight, number of alive individuals) of larvae, pupae, and adult beetles, as well as pupation and eclosion. Exposure to spinosad at 2.0 mg/kg resulted in significant adverse effects on most performance measures of larvae, of both generations. Imidacloprid caused a reduction in yield and mean individual weight of the larvae as compared to the control at 0.1 mg/kg, while an increase in those measures was observed at 0.01 mg/kg. Significant adverse effects on adult beetles were only observed for imidacloprid at 0.1 mg/kg, and no significant effects of this insecticide on pupation and eclosion were observed. The concentrations of tested substances in larval samples were negligible for both generations, however, transfer from substrate to larval biomass was higher in the offspring generation relative to the parent generation. More research is needed to fully assess the hazard of insecticide residues to cause sublethal effects on A. diaperinus, for which method development for more cost-efficient designs is required.
{"title":"Lethal and sublethal effects of chronic exposure to insecticide residues on reared Alphitobius diaperinus","authors":"N. Meijer, M.W. Bosch, T. de Rijk, P. Zomer, H.J. van der Fels-Klerx, Joop J. A. Van Loon","doi":"10.1163/23524588-20230155","DOIUrl":"https://doi.org/10.1163/23524588-20230155","url":null,"abstract":"Edible insects such as lesser mealworm (Alphitobius diaperinus) are a promising new protein source for food and feed. The feed substrate on which these insects are reared may be contaminated with residues of insecticides originating from agricultural products that may impact insect performance. In this study, two generations of A. diaperinus were chronically exposed to spinosad (2.0 and 0.2 mg/kg) and imidacloprid (0.1 and 0.01 mg/kg) in the substrate. The aim was to determine sublethal effects on performance measures (total biomass (yield), mean individual weight, number of alive individuals) of larvae, pupae, and adult beetles, as well as pupation and eclosion. Exposure to spinosad at 2.0 mg/kg resulted in significant adverse effects on most performance measures of larvae, of both generations. Imidacloprid caused a reduction in yield and mean individual weight of the larvae as compared to the control at 0.1 mg/kg, while an increase in those measures was observed at 0.01 mg/kg. Significant adverse effects on adult beetles were only observed for imidacloprid at 0.1 mg/kg, and no significant effects of this insecticide on pupation and eclosion were observed. The concentrations of tested substances in larval samples were negligible for both generations, however, transfer from substrate to larval biomass was higher in the offspring generation relative to the parent generation. More research is needed to fully assess the hazard of insecticide residues to cause sublethal effects on A. diaperinus, for which method development for more cost-efficient designs is required.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"13 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139216025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-27DOI: 10.1163/23524588-20230009
A. Swargiary, M. Daimari, M.K. Roy
Sericulture is a common practice around the globe. The silk produced by moths is widely known, but the nutritional potential of silkworms for human consumption is not well recognized. The present study analyses the nutritional contents and antioxidant properties of the prepupae and pupae stages of Samia ricini. Proximate analysis was carried out following AOAC methods. The antioxidant activity was studied by Ferric reducing antioxidant power assay, 1,1-Diphenyl-2-picryl-hydrazyl, and 2,2’-Azinobis-(3-ethylbenzothiazoline-6-sulfonate) assays. The study observed substantial quantity of nutritional content in both the prepupae and pupae stages of S. ricini. The moisture content was found to be 70-72% in wet tissue weight. Protein content was 13-15% and 46-51% in wet and dry tissue, respectively. The study observed significant increase in protein content from prepupae to pupae stages. Fats and carbohydrate content also showed significant differences between the two stages of S. ricini. The pupae showed more potent antioxidant activity compared to prepupae. The IC50 values for pupae were 3.29 ± 0.12 mg/mL and 1.79 ± 0.32 mg/mL for DPPH and ABTS assay. In contrast, prepupae stage showed weaker antioxidant properties with IC50 values of 7.26 ± 0.52 mg/mL and 3.11 ± 0.12 mg/mL. The present study suggests that the pupae of S. ricini could be an alternative source of proteins, antioxidants, and beneficial food to incorporate into daily diet compared to the prepupae stage.
{"title":"Study of nutritional content and antioxidant activity of prepupae and pupae stages of Samia ricini","authors":"A. Swargiary, M. Daimari, M.K. Roy","doi":"10.1163/23524588-20230009","DOIUrl":"https://doi.org/10.1163/23524588-20230009","url":null,"abstract":"Sericulture is a common practice around the globe. The silk produced by moths is widely known, but the nutritional potential of silkworms for human consumption is not well recognized. The present study analyses the nutritional contents and antioxidant properties of the prepupae and pupae stages of Samia ricini. Proximate analysis was carried out following AOAC methods. The antioxidant activity was studied by Ferric reducing antioxidant power assay, 1,1-Diphenyl-2-picryl-hydrazyl, and 2,2’-Azinobis-(3-ethylbenzothiazoline-6-sulfonate) assays. The study observed substantial quantity of nutritional content in both the prepupae and pupae stages of S. ricini. The moisture content was found to be 70-72% in wet tissue weight. Protein content was 13-15% and 46-51% in wet and dry tissue, respectively. The study observed significant increase in protein content from prepupae to pupae stages. Fats and carbohydrate content also showed significant differences between the two stages of S. ricini. The pupae showed more potent antioxidant activity compared to prepupae. The IC50 values for pupae were 3.29 ± 0.12 mg/mL and 1.79 ± 0.32 mg/mL for DPPH and ABTS assay. In contrast, prepupae stage showed weaker antioxidant properties with IC50 values of 7.26 ± 0.52 mg/mL and 3.11 ± 0.12 mg/mL. The present study suggests that the pupae of S. ricini could be an alternative source of proteins, antioxidants, and beneficial food to incorporate into daily diet compared to the prepupae stage.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139228512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-27DOI: 10.1163/23524588-20230177
D. Akiyama, T. Kaewplik, Y. Sasaki
Crickets are being reevaluated as food and livestock feed due to their high nutritional value and low environmental impact during production, as food waste can be used as feed. On the other hand, current cricket production uses feed used in aquaculture and poultry farming, and these feeds contain animal proteins such as fish meal and chicken meal. This is simply converting other animal proteins into insect proteins. Therefore, this study aimed to test whether two-spotted cricket powder can be used as a substitute for fishmeal in diets for Gryllus bimaculatus production. Cricket weight, feed efficiency, and number of crickets were evaluated by feeding rice bran: cricket powder = 85:15 and rice bran: fish meal = 85:15, respectively, referring to the feed mix ratio used by cricket producers. Results showed no statistically significant differences between the two experiments in cricket weight and feed conversion ratio. When data were obtained separately for each growth phase, cricket weight was found to be highest in the fourth post-hatching week for the diet with cricket powder and then decreased (initial input: 1 g; 28 days: 89.45 ± 22.19 g; 35 days: 49.47 ± 14.11 g). Feed conversion efficiency was found to be higher in the second half of growth (1-7 days: 0.48; 23-28 days: 0.80). The use of insect powder as bait for crickets is a new proposal. In cricket production, adults with low reproductive capacity are packaged and sold as food or livestock feed, but by using insect powder as feed during cricket production, it is possible to reduce animal protein in the feed. In the future, we plan to investigate the usefulness of mass-produced insect powder as feed for crickets.
{"title":"Investigation of the usefulness of two-spotted cricket (Gryllus bimaculatus) feed using two-spotted cricket (Gryllus bimaculatus) powder to replace fishmeal","authors":"D. Akiyama, T. Kaewplik, Y. Sasaki","doi":"10.1163/23524588-20230177","DOIUrl":"https://doi.org/10.1163/23524588-20230177","url":null,"abstract":"Crickets are being reevaluated as food and livestock feed due to their high nutritional value and low environmental impact during production, as food waste can be used as feed. On the other hand, current cricket production uses feed used in aquaculture and poultry farming, and these feeds contain animal proteins such as fish meal and chicken meal. This is simply converting other animal proteins into insect proteins. Therefore, this study aimed to test whether two-spotted cricket powder can be used as a substitute for fishmeal in diets for Gryllus bimaculatus production. Cricket weight, feed efficiency, and number of crickets were evaluated by feeding rice bran: cricket powder = 85:15 and rice bran: fish meal = 85:15, respectively, referring to the feed mix ratio used by cricket producers. Results showed no statistically significant differences between the two experiments in cricket weight and feed conversion ratio. When data were obtained separately for each growth phase, cricket weight was found to be highest in the fourth post-hatching week for the diet with cricket powder and then decreased (initial input: 1 g; 28 days: 89.45 ± 22.19 g; 35 days: 49.47 ± 14.11 g). Feed conversion efficiency was found to be higher in the second half of growth (1-7 days: 0.48; 23-28 days: 0.80). The use of insect powder as bait for crickets is a new proposal. In cricket production, adults with low reproductive capacity are packaged and sold as food or livestock feed, but by using insect powder as feed during cricket production, it is possible to reduce animal protein in the feed. In the future, we plan to investigate the usefulness of mass-produced insect powder as feed for crickets.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"176 5 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139231280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-27DOI: 10.1163/23524588-20230148
N. Mouhrim, D. Peguero, A. Green, B. Silva, A. Bhatia, D. Ristic, A. Tonda, A. Mathys, S. Smetana
Insect value chains are a complex system with non-linear links between many economic, environmental, and social variables. Multi-objective optimization (MOO) algorithms for finding optimal options for complex system functioning can provide a valuable insight in the development of sustainable insect chains. This review proposes a framework for MOO application that is based on gradual implementation, beginning with factors that have an immediate impact on insect production (feed qualities, resource utilization, yield), and progressing to integrated units (environmental, social, and economic impacts). The review introduces the key hotspots of insect production chains, which have been developed in suitable MOO objectives. They represent aspects of resource use, feed quality and its conversion by insects, labor safety and wage fairness, as well as environmental impacts. The capacity of the suggested MOO framework to describe all facets of sustainability may have certain limits. To determine the framework’s applicability and the specific MOO algorithms that can perform the function, modeling and further testing on real insect production chains would be necessary for the intended objectives.
{"title":"Optimization models for sustainable insect production chains","authors":"N. Mouhrim, D. Peguero, A. Green, B. Silva, A. Bhatia, D. Ristic, A. Tonda, A. Mathys, S. Smetana","doi":"10.1163/23524588-20230148","DOIUrl":"https://doi.org/10.1163/23524588-20230148","url":null,"abstract":"Insect value chains are a complex system with non-linear links between many economic, environmental, and social variables. Multi-objective optimization (MOO) algorithms for finding optimal options for complex system functioning can provide a valuable insight in the development of sustainable insect chains. This review proposes a framework for MOO application that is based on gradual implementation, beginning with factors that have an immediate impact on insect production (feed qualities, resource utilization, yield), and progressing to integrated units (environmental, social, and economic impacts). The review introduces the key hotspots of insect production chains, which have been developed in suitable MOO objectives. They represent aspects of resource use, feed quality and its conversion by insects, labor safety and wage fairness, as well as environmental impacts. The capacity of the suggested MOO framework to describe all facets of sustainability may have certain limits. To determine the framework’s applicability and the specific MOO algorithms that can perform the function, modeling and further testing on real insect production chains would be necessary for the intended objectives.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"58 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139233479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-27DOI: 10.1163/23524588-20230163
E. Sonntag, A. Vidal, D. Grimm, G. Rahmann, J.W. van Groenigen, H. van Zanten, A. Parodi
Sustainable food system innovations are urgently needed to feed a growing human population while staying within planetary boundaries. Farmed edible insects have received considerable scientific and public attention due to their potential to improve food system circularity by upcycling nutrients from organic residual streams to nutritious food. Earthworms, as non-insect invertebrates, have remained largely unrecognized in the future foods debate. However, they are already widely farmed at industrial scale for their capacity to recycle organic wastes and improve soil fertility. We conducted a systematic literature review to provide a quantitative basis on earthworm nutritional composition, thereby positioning earthworms in the future foods debate. Here we show, based on evidence from 142 scientific studies, that farmed earthworms are a potentially interesting food source. They have an attractive nutrient composition compared to the main farmed edible insect species, being especially rich in protein, low in fat and containing a favourable profile of essential amino acids. The content of important fatty acids, minerals and vitamins in earthworm biomass is higher or lower than in edible insects, depending on the feed material. Crude protein and fat contents are higher in farmed versus wild earthworms, indicating that farming conditions provide a lever for further improving the nutritional composition of earthworm biomass. Whether earthworm species or feed materials affect earthworm nutritional composition could not be finally clarified based on the available data. We conclude that earthworms have high potential as a future food from a nutritional perspective, mainly as an alternative source of protein. The integration of earthworm farming in future food systems can be expected to improve sustainability and circularity, potentially giving earthworms an advantage over edible insects.
{"title":"Positioning earthworms in the future foods debate: a systematic review of earthworm nutritional composition in comparison to edible insects","authors":"E. Sonntag, A. Vidal, D. Grimm, G. Rahmann, J.W. van Groenigen, H. van Zanten, A. Parodi","doi":"10.1163/23524588-20230163","DOIUrl":"https://doi.org/10.1163/23524588-20230163","url":null,"abstract":"Sustainable food system innovations are urgently needed to feed a growing human population while staying within planetary boundaries. Farmed edible insects have received considerable scientific and public attention due to their potential to improve food system circularity by upcycling nutrients from organic residual streams to nutritious food. Earthworms, as non-insect invertebrates, have remained largely unrecognized in the future foods debate. However, they are already widely farmed at industrial scale for their capacity to recycle organic wastes and improve soil fertility. We conducted a systematic literature review to provide a quantitative basis on earthworm nutritional composition, thereby positioning earthworms in the future foods debate. Here we show, based on evidence from 142 scientific studies, that farmed earthworms are a potentially interesting food source. They have an attractive nutrient composition compared to the main farmed edible insect species, being especially rich in protein, low in fat and containing a favourable profile of essential amino acids. The content of important fatty acids, minerals and vitamins in earthworm biomass is higher or lower than in edible insects, depending on the feed material. Crude protein and fat contents are higher in farmed versus wild earthworms, indicating that farming conditions provide a lever for further improving the nutritional composition of earthworm biomass. Whether earthworm species or feed materials affect earthworm nutritional composition could not be finally clarified based on the available data. We conclude that earthworms have high potential as a future food from a nutritional perspective, mainly as an alternative source of protein. The integration of earthworm farming in future food systems can be expected to improve sustainability and circularity, potentially giving earthworms an advantage over edible insects.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"13 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139233390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-23DOI: 10.1163/23524588-20230095
P. Herren, H. Hesketh, A.M. Dunn, N. V. Meyling
The yellow mealworm (Tenebrio molitor) is a promising insect species for mass-rearing for the production of feed and food. In mass-production systems, insects may be exposed to abiotic stressors such as heat stress as well as potentially lethal pathogens. To ensure mass-reared T. molitor populations are healthy and productive there is a need to understand both the risks, and potential benefits of heat stress, on the fitness of insects and their susceptibility to pathogens. In this study, we investigated the effects of a short (2 h) or a long (14 h) heat stress (38 °C) exposure on the susceptibility and the immune responses of T. molitor larvae exposed to a fungal pathogen (Metarhizium brunneum). Larvae were exposed to the pathogen either immediately or five days after the heat stress treatments. The development of heat stressed larvae and their offspring was also assessed. A short heat stress immediately before exposure to M. brunneum increased the survival probability of T. molitor larvae, which correlated with increased antibacterial activity in the hemolymph. The exposure of larvae to short, or long heat stresses five days before pathogen exposure did not affect their survival, despite a temporary lowered body mass gain of heat stressed larvae. However, heat stressed larvae showed decreased hemocyte concentrations when exposed to M. brunneum. We also found an increased body weight in larval offspring of females that had been exposed to a short heat stress as larvae themselves. These findings demonstrate the importance of understanding the effects of heat stress in the long-term. The beneficial effects of heat stress on pathogen susceptibility in T. molitor and the negative effects on body mass gain are only transient, whereas negative effects on immune response (hemocyte concentrations) persist over an extended period.
{"title":"Heat stress has immediate and persistent effects on immunity and development of Tenebrio molitor","authors":"P. Herren, H. Hesketh, A.M. Dunn, N. V. Meyling","doi":"10.1163/23524588-20230095","DOIUrl":"https://doi.org/10.1163/23524588-20230095","url":null,"abstract":"The yellow mealworm (Tenebrio molitor) is a promising insect species for mass-rearing for the production of feed and food. In mass-production systems, insects may be exposed to abiotic stressors such as heat stress as well as potentially lethal pathogens. To ensure mass-reared T. molitor populations are healthy and productive there is a need to understand both the risks, and potential benefits of heat stress, on the fitness of insects and their susceptibility to pathogens. In this study, we investigated the effects of a short (2 h) or a long (14 h) heat stress (38 °C) exposure on the susceptibility and the immune responses of T. molitor larvae exposed to a fungal pathogen (Metarhizium brunneum). Larvae were exposed to the pathogen either immediately or five days after the heat stress treatments. The development of heat stressed larvae and their offspring was also assessed. A short heat stress immediately before exposure to M. brunneum increased the survival probability of T. molitor larvae, which correlated with increased antibacterial activity in the hemolymph. The exposure of larvae to short, or long heat stresses five days before pathogen exposure did not affect their survival, despite a temporary lowered body mass gain of heat stressed larvae. However, heat stressed larvae showed decreased hemocyte concentrations when exposed to M. brunneum. We also found an increased body weight in larval offspring of females that had been exposed to a short heat stress as larvae themselves. These findings demonstrate the importance of understanding the effects of heat stress in the long-term. The beneficial effects of heat stress on pathogen susceptibility in T. molitor and the negative effects on body mass gain are only transient, whereas negative effects on immune response (hemocyte concentrations) persist over an extended period.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"82 8","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139244062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-23DOI: 10.1163/23524588-20230149
F. Boatta, J.A.H. Smit, M.A.W.M. Lautenschutz, E.D. Ellen, J. Ellers
Fats make up a large fraction of the larval biomass in insects and are of increasing relevance for industrial purposes. The quantity of fats accumulated during the larval period can vary greatly among individuals. To selectively breed favourable fat accumulation phenotypes for commercial purpose, a genetic component underlying these differences would be required. In this study we determined the heritability of larval fat accumulation in the common housefly (Musca domestica L.). A nested paternal half-sib breeding design resulted in a total of 47 full-sib families, which produced in total 633 larvae, each phenotyped for their dry weight and fat content (absolute and relative). Adult selection was strictly standardized to reduce the variation in fat content induced by differences in development time during the immature stages: sires and dams were separated according to their pupation day and emergence day, and subsequently pooled into randomized groups. Two animal models were built to estimate the heritability of larval fat accumulation: (1) a Markov Chain Monte Carlo linear mixed model (MCMCglmm) where three sets of priors were used, and (2) one based on linear mixed model using restricted maximum likelihood (ASReml). The results showed a moderate heritability for larval absolute fat content for both MCMCglmm (between 0.30 and 0.38, depending on the set of prior used) and ASReml (0.37 ± 0.11). Slightly higher estimates were obtained for the relative fat content with both the MCMCglmm (between 0.34-0.48) and ASReml (0.47 ± 0.10). In contrast, heritability estimates for larval dry weight were low and could be obtained only with the MCMCglmm model (between 0.11-0.22). This work provides valuable insights into the quantitative genetics of larval fat characteristics, a trait of high relevance for the emerging sector producing insects for feed and food.
{"title":"Heritability of fat accumulation in the house fly and its implication for the selection of nutritionally tailored phenotypes","authors":"F. Boatta, J.A.H. Smit, M.A.W.M. Lautenschutz, E.D. Ellen, J. Ellers","doi":"10.1163/23524588-20230149","DOIUrl":"https://doi.org/10.1163/23524588-20230149","url":null,"abstract":"Fats make up a large fraction of the larval biomass in insects and are of increasing relevance for industrial purposes. The quantity of fats accumulated during the larval period can vary greatly among individuals. To selectively breed favourable fat accumulation phenotypes for commercial purpose, a genetic component underlying these differences would be required. In this study we determined the heritability of larval fat accumulation in the common housefly (Musca domestica L.). A nested paternal half-sib breeding design resulted in a total of 47 full-sib families, which produced in total 633 larvae, each phenotyped for their dry weight and fat content (absolute and relative). Adult selection was strictly standardized to reduce the variation in fat content induced by differences in development time during the immature stages: sires and dams were separated according to their pupation day and emergence day, and subsequently pooled into randomized groups. Two animal models were built to estimate the heritability of larval fat accumulation: (1) a Markov Chain Monte Carlo linear mixed model (MCMCglmm) where three sets of priors were used, and (2) one based on linear mixed model using restricted maximum likelihood (ASReml). The results showed a moderate heritability for larval absolute fat content for both MCMCglmm (between 0.30 and 0.38, depending on the set of prior used) and ASReml (0.37 ± 0.11). Slightly higher estimates were obtained for the relative fat content with both the MCMCglmm (between 0.34-0.48) and ASReml (0.47 ± 0.10). In contrast, heritability estimates for larval dry weight were low and could be obtained only with the MCMCglmm model (between 0.11-0.22). This work provides valuable insights into the quantitative genetics of larval fat characteristics, a trait of high relevance for the emerging sector producing insects for feed and food.","PeriodicalId":48604,"journal":{"name":"Journal of Insects as Food and Feed","volume":"51 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139243638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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