Journal of Stored Products Research最新文献

{"title":"MSGP-DETR: A multi-species stored-grain insect pest detection transformer integrating frequency-domain enhancement and state space models","authors":"Zhizhong Guan ,&nbsp;Fuyan Sun ,&nbsp;Zongwang Lyu ,&nbsp;Yiyang Xin ,&nbsp;Zihan Zhao","doi":"10.1016/j.jspr.2025.102941","DOIUrl":"10.1016/j.jspr.2025.102941","url":null,"abstract":"<div><div>Effective detection of stored-grain insect pests (SGIP) constitutes a critical component of modern grain storage management, directly impacting food security and minimizing post-harvest losses. However, achieving accurate detection through object detection methods remains challenging due to small target scales, subtle inter-species morphological differences, and complex background interference. Therefore, this study proposes a high-precision SGIP model based on Transformer architecture called Multi-Species Stored-Grain Insect Pest DEtection TRansformer (MSGP-DETR). To enhance small target detection capabilities, the network incorporates a Discrete Cosine Transform Small Target Enhancement Module (DSTEM) for frequency-domain feature enhancement. Additionally, a Multi-Point Spiral Mamba (MPSM) module is designed to capture long-range dependencies through linear computational complexity. Moreover, an Adaptive Partial Enhancement Lightweight Aggregation Network (APELAN) is developed to reduce computational complexity while preserving essential feature information. To evaluate MSGP-DETR's performance in SGIP detection, we collected adult live samples of eight common SGIP species and constructed a dataset named SGIP8. Experimental results demonstrate that MSGP-DETR achieves 94.6 % AP₅₀ and 50.1 % AP_50:95 on the SGIP8 dataset, with only 9.2M parameters and 19.7 GFLOPs computational complexity. The detection speed reaches 36.6 FPS, with overall performance surpassing current mainstream models. Finally, validation on additional Pest24 and VisDrone2019 datasets confirms the effectiveness of MSGP-DETR. This research provides technical support for automated grain storage management.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102941"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aphagy under pressure: Cold unveils hidden energetic conflicts across sex and generations","authors":"Azam Amiri ,&nbsp;Ali R. Bandani","doi":"10.1016/j.jspr.2026.102989","DOIUrl":"10.1016/j.jspr.2026.102989","url":null,"abstract":"<div><div>In aphagous insects, where adults do not feed, survival and reproduction depend entirely on a finite energy pool acquired during larval development. This closed metabolic architecture imposes severe constraints on physiological trade-offs, particularly under environmental stress. Cold exposure represents a realistic ecological stressor frequently encountered by stored-product pests and field populations during transport or overwintering, influencing both survival and population dynamics. Here, we demonstrate that cold functions not only as a sublethal stressor but also as a potential natural regulator of pest fitness in the seed beetle <em>Callosobruchus maculatus</em> (Coleoptera: Bruchidae), uncovering sex-specific energy allocation strategies and intergenerational vulnerabilities. Through four integrated experiments, we exposed adults and early developmental stages to freezing temperatures (−20 °C) and chilling temperatures (4 °C), quantifying mortality thresholds, adjusted post-stress lifespan, fecundity, hatch success, adult emergence, and sex ratios. Cold-stressed females preserved somatic longevity by reducing reproductive investment—a pattern consistent with adaptive energy prioritization. In contrast, males suffered progressive post-stress declines in survival with increasing cold duration. These results reveal how aphagy amplifies the energetic cost of stress, leading to asymmetric resilience between sexes and across generations, with direct implications for pest persistence and control under fluctuating temperature regimes. Our findings highlight that understanding physiological constraints in non-feeding adult pests can improve predictions of population recovery after cold exposure and inform temperature-based management strategies in stored-grain protection systems.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102989"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147394305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Separate and combined effects of plant essential oils and X-ray irradiation against the Mediterranean flour moth, Ephestia kuehniella Zeller","authors":"Bahram Naseri ,&nbsp;Asgar Ebadollahi ,&nbsp;Maryam Elahi ,&nbsp;Forough Afshari ,&nbsp;Aryan Ebadi ,&nbsp;Fatemeh Mirzaei Kouhsareh ,&nbsp;Hanieh Sadat Azizi ,&nbsp;Arash Farhoomand ,&nbsp;Aysona Aghcheli ,&nbsp;Zahra Rezaei ,&nbsp;Javad Salmani-Moghanlou ,&nbsp;Roya Ahmadpour ,&nbsp;Asadollah Asadi ,&nbsp;Arash Abdolmaleki ,&nbsp;Reza Farshbaf Pourabad ,&nbsp;William N. Setzer","doi":"10.1016/j.jspr.2026.102984","DOIUrl":"10.1016/j.jspr.2026.102984","url":null,"abstract":"<div><div>The use of chemical pesticides to control storage pests has resulted in numerous side effects on non-target organisms and the environment. X-ray irradiation and plant essential oils (EOs) are low-risk and efficient methods to control storage pests such as <em>Ephestia kuehniella</em> Zeller. The aim of this study was to evaluate lethality of EOs from <em>Mentha piperita</em> L., <em>Satureja hortensis</em> L., <em>Carum copticum</em> L., <em>Foeniculum vulgare</em> Mill., <em>Syzygium aromaticum</em> L., and <em>Pimpinella anisum</em> L. against fifth-instar larvae of <em>E. kuehniella</em>. Thereafter, the combined effect of <em>C. copticum</em> and <em>S. hortensis</em> oils (as the most toxic EOs) with X-ray irradiation (at a dose of 0.5 Gy/h) on life-table parameters of this pest was investigated using the age-stage, two-sex theory. Terpenic compounds, including thymol, <em>p</em>-cymene, γ-terpinene, and α-pinene, were dominant in <em>C. copticum</em> and <em>S. hortensis</em> EOs. The combining of <em>C. copticum</em> and <em>S. hortensis</em> EOs with X-ray irradiation increased the mortality of larvae compared to their isolated application and control. The developmental times were also prolonged in all treatments as compared to the control. Moreover, number of eggs laid, intrinsic rate of population increase and net reproductive rate were decreased by combined application of EOs and X-ray. According to the synergistic phenomena, the combining of <em>C. copticum</em> and <em>S. hortensis</em> EOs and X-ray irradiation can be introduced as a suitable alternative to conventional pesticides to manage <em>E. kuehniella</em> in storage.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102984"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and quantifying the synergistic impact of Tribolium castaneum infestation and storage temperature on lipid deterioration in wheat flour","authors":"Nianguo Guo,&nbsp;Kexin Zhou,&nbsp;Jingru Huang,&nbsp;Yiying Li","doi":"10.1016/j.jspr.2026.102974","DOIUrl":"10.1016/j.jspr.2026.102974","url":null,"abstract":"<div><div>Post-harvest losses in wheat flour, a key finished grain product, arise significantly from insect infestation and biochemical deterioration during storage. This study investigated the combined effects of the red flour beetle (<em>Tribolium castaneum</em>), a major secondary pest, and storage temperature on lipid deterioration, measured by fatty acid value (FAV). Over 150 days, flour samples were stored under varying temperatures (ambient, 15, 25, 30 °C) and infested with different initial insect densities (0,2,4,6,8 adults/500g). Results demonstrated a strong synergistic interaction: both higher temperatures and insect densities significantly accelerated the increase in FAV. To accurately analyze the repeated-measures data exhibiting heteroscedasticity, a Generalized Least Squares (GLS) model was developed. The model quantified the significant influence of temperature, time (including its quadratic and periodic trends), and insect density on FAV. It exhibited excellent performance, with a high goodness-of-fit (<em>R</em>² = 0.9262) and superior predictive ability (RPD = 4.44). Notably, at 30 °C with an insect density of 8 adults/500g, FAV increased by an average of 45.09 units compared to the baseline (0 adults, 15 °C). This study provides a novel, quantitative predictive tool that bridges pest ecology and quality monitoring, offering critical data-driven insights for optimizing integrated pest management (IPM) strategies and enabling risk-based decision-making in bulk flour storage to reduce economic losses.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102974"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic insecticidal mechanism of 2-undecanone and decanal against Tribolium castaneum larvae via dual suppression of GST and FDa pathways","authors":"Chunxue You ,&nbsp;Yao Yao ,&nbsp;Kaidi Dai ,&nbsp;Jinming Chen ,&nbsp;Yanming Wu ,&nbsp;Wenjuan Zhang ,&nbsp;Xiaoxue Yu ,&nbsp;Chao Jiang ,&nbsp;Xiumei Gao","doi":"10.1016/j.jspr.2025.102938","DOIUrl":"10.1016/j.jspr.2025.102938","url":null,"abstract":"<div><div><em>Tribolium castaneum</em> (Herbst) is a major stored-product pest, necessitating safer alternatives targeting its destructive larval stage. This study investigated the synergistic insecticidal effects of 2-undecanone and decanal, two active constituents from <em>Houttuynia cordata</em> essential oil, against <em>T. castaneum</em> larvae and elucidated the underlying mechanisms via quantitative real-time PCR (qRT-PCR), RNA interference (RNAi), histopathology, molecular docking, ELISA, and enzyme activity assays. Contact toxicity assays identified the 5:5 mixture as optimally effective, exhibiting significant synergy (R ≥ 1.5) and the lowest LD₅₀ (14.8 μg/larva). Whereas 2-undecanone alone upregulated farnesol dehydrogenase (<em>FDa</em>), glutathione S-transferase (<em>GST</em>), and cytochrome P450 (<em>CYP6BQ7</em>), the 5:5 mixture significantly suppressed the expression of <em>FDa</em> and <em>GST</em> (&gt;60 %), accompanied by decreased GST enzyme activity and lower juvenile hormone (JH) III levels. RNAi silencing of <em>FDa</em> and <em>GST</em> confirmed their important roles in larval susceptibility. Molecular docking predicted interactions of both compounds with FDa and GST, implying potential cooperative inhibition. Histopathology revealed more severe midgut damage under the mixture than under either compound alone. In conclusion, the synergy arises from coordinated suppression of the GST-mediated detoxification and FDa-linked JH biosynthesis, offering a promising strategy for developing potent, eco-friendly botanical formulations for stored-product pest management.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102938"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative evaluation of storage bags for mold and mycotoxins control in niger seed cake","authors":"Asrat Otoru Oshone,&nbsp;Admasu Fanta Worku","doi":"10.1016/j.jspr.2025.102936","DOIUrl":"10.1016/j.jspr.2025.102936","url":null,"abstract":"<div><div>Niger seed cake, a byproduct of oil extraction from niger seeds, is a protein and energy-rich livestock feed. However, it is prone to mold and mycotoxin contamination, which can harm animal health and the human food chain. This study evaluated the effectiveness of three storage bags in preventing mold growth and development of total aflatoxins (AFT) and ochratoxin A (OTA) in niger seed cake during three months of storage. Three storage bags were used in the experiment: Purdue Improved Crop Storage (PICS), Super GrainPro (SGP), and polypropylene (PPB), with each replicated three times using a completely randomized design. Mold, AFT, OTA, moisture, and nutrient contents were measured at baseline and after three months. During three months of storage, the average ambient temperature and, relative humidity were 23.8 ± 2.4 °C and 76.5 ± 3.1 % respectively. Enumeration of molds was performed using the spread plate method on potato dextrose agar. Mycotoxins were analyzed using the lateral flow immunoassay techniques on an indirect competitive immunoassay format. Data were analyzed at the 5 % significance level using one-way analysis of variance to evaluate storage bags over three months, and t-tests were used to compare baseline values with those at three months for mold, AFT, OTA, and nutritional composition. Mold and mycotoxins formation correlated with the nutritional composition of niger seed cake. Niger seed cake stored in PPB showed higher mold and mycotoxin levels than the baseline value. During three months of storage in PPB, AFT and OTA increased in niger seed cake by 4.42- and 1.70-fold, respectively. Except for ash, the nutritional composition of niger seed cake stored in PPB for 3 months decreased significantly from baseline. PICS and SGP bags significantly prevented mold and mycotoxin contamination, ensuring safer niger seed cake storage for farmers, oil millers, and livestock industries.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102936"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metagenomic insights into diet-mediated gut microbial plasticity and functional adaptations in the tobacco beetle Lasioderma serricorne (Coleoptera: Ptinidae)","authors":"Junaid Zafar ,&nbsp;Shuhao Zhang ,&nbsp;Zhanpeng Zhu ,&nbsp;Ziling Wan ,&nbsp;Yanqing Li ,&nbsp;Ang Li ,&nbsp;Ling Huang ,&nbsp;Xuewei Zhang ,&nbsp;Chen Peng ,&nbsp;Shuai Zhong ,&nbsp;Fengliang Jin ,&nbsp;Xiaoxia Xu","doi":"10.1016/j.jspr.2025.102931","DOIUrl":"10.1016/j.jspr.2025.102931","url":null,"abstract":"<div><div>The tobacco beetle, <em>Lasioderma serricorne</em>, is a globally distributed pest that inflicts major economic losses on stored products due its exceptional dietary adaptability. Understanding host-microbe-diet interactions is crucial for developing sustainable biological control strategies targeting insect-associated microorganisms. Here, we employed comparative metagenomic sequencing to characterize gut microbial communities in <em>L. serricorne</em> larvae reared on four dietary treatments i.e., artificial diet; <em>Artemisia argyi</em>; <em>Nicotiana tabacum</em> and <em>Angelica sinensis</em>. Taxonomic diversity, functional profiles, carbohydrate-active enzymes (CAZymes), and antibiotic resistance genes (ARGs) were analyzed using comprehensive bioinformatic pipelines. Our analysis showed that diet profoundly shaped the gut microbiome architecture, with natural plant substrates supporting significantly higher microbial diversity than artificial diet. Proteobacteria dominated across all groups, with Enterobacteriaceae as the predominant family and <em>Enterobacter</em> as the most abundant genus. Notably, <em>Enterobacter cancerogenus</em> was consistently present in all dietary groups. Linear discriminant analysis effect size (LEfSe) identified diet-specific distinct microbial biomarkers: <em>N. tabacum</em>-fed larvae showed enrichment of <em>Enterococcus</em> spp. (Lactobacillales: Enterococcaceae), potentially facilitating alkaloid detoxification, while <em>A. sinensis</em>-fed larvae exhibited remarkable fungal diversity, particularly Ascomycota spanning multiple classes. Functional analysis revealed diet-specific enzymatic specialization, with <em>A. sinensis</em>-fed larvae exhibiting diverse CAZyme profiles including polysaccharide lyases and lignin-modifying enzymes. <em>A. argyi</em>-fed larvae showed moderate CAZyme abundance, while simplified artificial diet reduced both microbial diversity and functional complexity. KEGG pathway analysis showed <em>N. tabacum</em>-fed larvae exhibited comparatively enhanced oxidative metabolism with enriched respiratory chain components and cellular transport proteins, indicating metabolic adaptation to alkaloid detoxification. Co-occurrence analysis identified significant correlations between ARGs and specific microbial genera (<em>Enterobacter</em>, <em>Escherichia</em>, <em>Enterococcus</em>), suggesting potential resistance gene reservoirs within the gut microbiome. Our findings demonstrate that dietary substrate drives distinct microbial adaptations underlying the polyphagous lifestyle of <em>L. serricorne</em>, with diet-specific dependencies offering targets for microbiome-based biological control strategies.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102931"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of extreme temperatures on Ectomyelois ceratoniae (Zeller, 1839) (Lepidoptera: Pyralidae) and their potential for pest management in food storage","authors":"Davide Scaccini,&nbsp;Enrico Ceccato,&nbsp;Jessica Canella,&nbsp;Jacopo Fontana,&nbsp;Alberto Pozzebon","doi":"10.1016/j.jspr.2026.102965","DOIUrl":"10.1016/j.jspr.2026.102965","url":null,"abstract":"<div><div>In food storage, pest disinfestation can be achieved by applying high or low temperatures that modify the environment beyond pest-critical thresholds. The carob moth, <em>Ectomyelois ceratoniae</em> (Zeller) (Lepidoptera: Pyralidae) is a thermophilic species that can develop on fruits of several host plants, making damage in both field and post-harvest conditions. Identifying thermal survival thresholds can aid in developing post-harvest control strategies for this pest. This study examined lethal and sublethal effects of extreme temperatures on <em>E. ceratoniae</em> larvae through laboratory dose–response experiments. Following an exposure of 2 h, complete mortality of mature larvae was achieved at 47.9 °C or higher, or at −12.9 °C or lower. The temperature causing 50 % larval mortality was about 45 °C under heat exposure, and between −7.3 °C and −8.7 °C under cold exposure, depending on the assessment time. Larvae with lower body mass and scaled mass index exhibited higher mortality rates compared to those with higher scores. Treated larvae that survived heat or cold exposure showed temperature-dependent body mass changes, increasing under moderate conditions and decreasing at extreme temperatures. Temperature had no significant delayed sublethal effects on pupal duration or adult lifespan in larvae surviving extreme exposures. A higher delayed pre-adult mortality occurred in insects exposed to −10.0 °C, −7.5 °C, and 45.0 °C compared to those subjected to milder temperature regimes. This study highlights the lethal and delayed sublethal effects of extreme temperatures on mature <em>E. ceratoniae</em> larvae, highlighting their relevance for improving pest management in food storage.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102965"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cowpea postharvest losses under smallholder farmer management in Benin: Extent, causes and opportunities","authors":"Paul Ayihadji Ferdinand Houssou ,&nbsp;Abel Bodéhoussè Hotegni ,&nbsp;Valère Dansou ,&nbsp;Hugue Zannou ,&nbsp;Tanya Stathers","doi":"10.1016/j.jspr.2025.102933","DOIUrl":"10.1016/j.jspr.2025.102933","url":null,"abstract":"<div><div>Cowpea is a vital source of dietary protein for millions of people across sub-Saharan Africa. The crop is typically grown by smallholder farmers for household consumption and to generate income through sales. However, postharvest losses are perceived to be high affecting both the quantity and quality of cowpea available. To design targeted loss reduction activities, understanding is needed of the extent, causes and activity stages during which losses occur. The cowpea postharvest systems of 120 farming households across four agro-ecological zones of Benin were explored across two years through interviews. Additionally, directly measured loss assessments at each activity stage from harvest to store loading and during a 6-month storage period were done with a subset of these households. Postharvest activities were mainly done manually. Storage practices included storing untreated grains in woven polypropylene (PP) bags or plastic or metal drums, or treatment of cowpea grains with synthetic chemical pesticide dust, a fumigant or dried chilli and storage in PP bags. Measurement found the cumulative mean quantity losses from harvesting through six months of storage were 19.03–21.96 % with the highest proportion of these losses occurring during harvesting (3.34–3.89 %), drying of pods (1.96–2.05 %), threshing (3.22–3.71 %), and storage (10.14–12.01 %). Loss levels were similar between years. Loss causes included rainfall during harvesting and/or drying, poor threshing methods, labour shortages, storage insect pest attack and rotting. An opportunity clearly exists for targeted multi-stakeholder participatory action research to co-develop affordable and acceptable ways of reducing these significant losses of such nutritionally and economically important grain legumes.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102933"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Legume seed macronutrient composition influences tri-trophic host–parasitoid dynamics in a stored-legume system","authors":"Soumaya Haouel-Hamdi ,&nbsp;Nada Abdelkader ,&nbsp;Emna Boushih ,&nbsp;Jouda Mediouni-Ben Jemâa","doi":"10.1016/j.jspr.2025.102900","DOIUrl":"10.1016/j.jspr.2025.102900","url":null,"abstract":"<div><div>This study investigated the tritrophic interactions among legume host plants, the bruchid pest <em>Callosobruchus maculatus</em>, and its parasitoid <em>Dinarmus basalis</em>, emphasizing the effects of biochemical composition on parasitoid performance. <em>C. maculatus</em> strains developing on protein and carbohydrate rich seeds were associated with higher body weight, large size, and improved biological parameters, including longevity, adult emergence rates, and fertility. Female fecundity and egg viability in <em>C. maculatus</em> were positively correlated with larval protein and carbohydrate intake, reflecting the quality of the host seed resource. Parasitoid fitness, essential for effective biological control of host populations, depends critically on substantial protein, lipid, and carbohydrate acquisition for survival and reproductive success. Our focus was specifically on the correlations between adult parasitoid life history parameters and host biochemical composition. The sugar content of fourth-instar <em>C. maculatus</em> larvae significantly influenced parasitoid performance, with a notable positive relationship between larval sugar concentration and <em>D. basalis</em> sex ratio bias toward females. This represents the first comprehensive investigation of relationships between the biochemical composition of <em>C. maculatus</em> L4 larvae and the biological and demographic performance of its parasitoid <em>D. basalis</em>. Our results demonstrate that macronutrient content in both plant hosts and herbivorous pests plays a crucial role in determining the strength and outcomes of tritrophic interactions.</div></div>","PeriodicalId":17019,"journal":{"name":"Journal of Stored Products Research","volume":"116 ","pages":"Article 102900"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145623243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}