Current Research in Insect Science最新文献

{"title":"Identification of a receptor for the sex pheromone of the vine mealybug, Planococcus ficus","authors":"Jacob A. Corcoran ,&nbsp;Walter F. Mahaffee","doi":"10.1016/j.cris.2024.100072","DOIUrl":"https://doi.org/10.1016/j.cris.2024.100072","url":null,"abstract":"<div><p>The vine mealybug, <em>Planococcus ficus</em>, is a significant pest of vineyards in all major grape growing regions of the world. This pest causes significant aesthetic damage to berry clusters through its feeding behavior and secretion of \"honeydew\", which leads to significant decreases in crop marketability. More importantly, the vine mealybug is a vector of several grapevine viruses which are the causal agent of grapevine leafroll disease, one of the most destructive and economically devastating diseases of the grape industry worldwide. As there is no cure for grapevine leafroll disease, the only control measures available to reduce its spread are to remove infected vines whilst simultaneously controlling mealybug populations. Using transcriptomic libraries prepared from male and female mealybugs and a draft genome, we identified and evaluated expression levels of members of the odorant receptor gene family. Interestingly, of the 50 odorant receptors identified from these <em>P. ficus</em> genetic resources, only 23 were found to be expressed in females, suggesting this flightless life stage has a decreased reliance on the olfactory system. In contrast, 46 odorant receptors were found to be expressed in the alate male life stage. Heterologous expression of eight of these receptors, along with the obligate co-receptor, Orco, in HEK293 cells allowed for the identification of two receptors that respond to lavandulyl senecioate, the sole constituent of the sex pheromone used by this species. Interestingly, one of these receptors, PficOR8, also responded to the sex pheromone used by the Japanese mealybug, <em>Planococcus kraunhiae</em>. The data presented here represent the first report of odorant receptor gene family expression levels, as well as the identification of the first sex pheromone receptor, in soft-scale insects. The identification of a receptor for the vine mealybug sex pheromone will allow for the development of novel, species-specific pest control tools and monitoring devices.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"5 ","pages":"Article 100072"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000027/pdfft?md5=bced18244a5ee3ed95b4d77d872c0f54&pid=1-s2.0-S2666515824000027-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139653206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response of cassava (Manihot esculenta Crantz) genotypes to natural infestation by scale insect pest Stictococcus vayssierei Richard (Hemiptera: Stictococcidae)","authors":"Patrice Zemko Ngatsi ,&nbsp;Bekolo Ndongo ,&nbsp;Zachée Ambang ,&nbsp;Pierre Eke ,&nbsp;William Norbert Tueguem Kuate ,&nbsp;Sylvere Landry Lontsi Dida ,&nbsp;Jude Ndjaga Manga ,&nbsp;Champlain Djiéto-Lordon","doi":"10.1016/j.cris.2024.100071","DOIUrl":"https://doi.org/10.1016/j.cris.2024.100071","url":null,"abstract":"<div><p>Cassava is mostly grown for its starchy roots, which ensure food security. However, it is heavily attacked by the African root and tuber scale (ARTS) <em>Stictococcus vayssierei</em> in Central Africa. This pest is a severe constraint to the production of cassava, food and income security for smallholder farmers. Crop resistance development through the selection of varieties with resistant traits against targeted pests is a promising approach to pest control. This study investigated cassava genotypes' response to natural infestation and determined their resistance levels against <em>S. vayssierei.</em> Six cassava genotypes (two local and four improved) were planted in a completely randomized block design with four replicates. Agronomic parameters and ARTS density were evaluated at 3, 6, 9 and 12 months after planting (MAP). Biochemical content was determined on the pith and cortex of 12 MAP aged tuberous roots. As a result, the improved Excel variety recorded the highest scale density per plant with 102.83 ± 4.14 ARTS/P at 9 MAP. At 12 MAP, high activity of total cyanide (69.18 ± 0.88 and 69.16 ± 1.44 mg/kg) and phenylalanine ammonia-lyase (0.142 ± 0.020 and 0.145 ± 0.010 ΔA/min/mg) were observed in the cortex of the tuberous roots of the improved varieties TMS 96/0023 and TMS 92/0057 which were colonized by the lowest ARTS density. The local variety (Douma) had a high content of total phenols (44.87 ± 1.15 µg/g) in the pith. It also produced the highest yield (23.8 ± 2.9 t ha-1). Varieties TMS 96/0023, TMS 92/0057 and Douma may be the most suitable varieties for the control of ARTS stress.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"5 ","pages":"Article 100071"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000015/pdfft?md5=d51697f67b64c8403652943e90081fae&pid=1-s2.0-S2666515824000015-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139653207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bet-hedging in parasitoids: when optimization is not the best strategy to cope with climatic extremes","authors":"Joan van Baaren ,&nbsp;Guy Boivin ,&nbsp;Bertanne Visser ,&nbsp;Cécile Le Lann","doi":"10.1016/j.cris.2024.100076","DOIUrl":"https://doi.org/10.1016/j.cris.2024.100076","url":null,"abstract":"<div><p>Bet-hedging occurs when unreliable environments select for genotypes exhibiting a lower variance in fitness at the cost of a lower mean fitness for each batch of progeny. This means that at the level of the genotype, the production of mostly non-optimal phenotypes may be favored when at least some phenotypes are successful. As extreme unreliable climatic events are increasing because of climate change, it is pertinent to investigate the potential of bet-hedging strategies that allow insects to cope with climate change. Evidence for bet-hedging is scarce in most insects, including parasitoids, but the unique lifestyle and biology of parasitoids leads to the expectation that bet-hedging may occur frequently. Here, we evaluate a range of parasitoid traits for which a bet-hedging strategy could be envisioned even if bet-hedging has not been identified as such yet. Under-identification of bet-hedging in nature could have resulted from a major focus of studies on parasitoid life history evolution and foraging behavior on optimality models, predicting how mean fitness can be maximized. Most environmental factors, however, vary unpredictably. Life history and behavioral adaptations are thus expected to be affected by environmental stochasticity. In this paper, we review different aspects of parasitoid behavior, physiology, and life histories and ask the question whether parasitoid traits could have evolved under selection by environmental stochasticity.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"5 ","pages":"Article 100076"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000064/pdfft?md5=060d9305169ea52bc7f8d1816c38a8ef&pid=1-s2.0-S2666515824000064-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140042202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Standard metabolic rate variation among New Zealand Orthoptera","authors":"Mariana Bulgarella ,&nbsp;John Haywood ,&nbsp;Eddy J. Dowle ,&nbsp;Mary Morgan-Richards ,&nbsp;Steven A. Trewick","doi":"10.1016/j.cris.2024.100092","DOIUrl":"10.1016/j.cris.2024.100092","url":null,"abstract":"<div><p>Standard metabolic rates (SMR) of ectotherms reflect the energetic cost of self-maintenance and thus provide important information about life-history strategies of organisms. We examined variation in SMR among fifteen species of New Zealand orthopteran. These species represent a heterogeneous group with a wide geographic distribution, differing morphologies and life histories. Gathering original data on morphological and physiological traits of individual species is a first step towards understanding existing variability. Individual metabolic rates of ectotherms are one of the first traits to respond to climate change. Baseline SMR datasets are valuable for modeling current species distributions and their responses to a changing climate. At higher latitudes, the average environmental temperature decreases. The pattern that cold-adapted ectotherms display higher SMR at colder temperatures and greater thermal sensitivity to compensate for lower temperatures and the shorter growing and reproductive seasons is predicted from the metabolic cold adaptation (MCA) hypothesis. We predict higher SMR for the orthopteran species found at higher latitudes. We further compared the index of thermal sensitivity Q₁₀ per species. We used closed-system respirometry to measure SMR, at two test temperatures (4 °C and 14 °C), for the fifteen species acclimated to the same conditions. As expected, we found significant differences in SMR among species. The rate of oxygen consumption was positively correlated with body mass. Our findings do not support the MCA hypothesis. In fact, we found evidence of co-gradient variation in SMR, whereby insects from higher elevations and latitudes presented lower SMR. We discuss our findings in relation to life histories and ecology of each species. The novel physiological data presented will aid in understanding potential responses of these unusual species to changing climatic conditions in Aotearoa/New Zealand.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"6 ","pages":"Article 100092"},"PeriodicalIF":2.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000222/pdfft?md5=06ad71529af6dd37b5a5e2e7a2736ba8&pid=1-s2.0-S2666515824000222-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141852050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neglecting non-bee pollinators may lead to substantial underestimation of competition risk among pollinators","authors":"Fabrice Requier ,&nbsp;Myriam Abdelli ,&nbsp;Mathilde Baude ,&nbsp;David Genoud ,&nbsp;Hadrien Gens ,&nbsp;Benoît Geslin ,&nbsp;Mickaël Henry ,&nbsp;Lise Ropars","doi":"10.1016/j.cris.2024.100093","DOIUrl":"10.1016/j.cris.2024.100093","url":null,"abstract":"<div><p>Due to the increasing pressures on bees, many beekeepers currently wish to move their managed livestock of <em>Apis mellifera</em> into little disturbed ecosystems such as protected natural areas. This may, however, exert detrimental competitive effects upon local wild pollinators. While it appears critical for land managers to get an adequate knowledge of this issue for effective wildlife conservation schemes, the frequency of this competition is not clear to date. Based on a systematic literature review of 96 studies, we assessed the frequency of exploitative competition between honey bees and wild pollinators. We found that 78% of the studies highlighted exploitative competition from honey bees to wild pollinators. Importantly, these studies have mostly explored competition with wild bees, while only 18% of them considered other pollinator taxa such as ants, beetles, bugs, butterflies, flies, moths, and wasps. The integration of non-bee pollinators into scientific studies and conservation plans is urgently required as they are critical for the pollination of many wild plants and crops. Interestingly, we found that a majority (88%) of these studies considering also non-bee pollinators report evidence of competition. Thus, neglecting non-bee pollinators could imply an underestimation of competition risks from honey bees. More inclusive work is needed to estimate the risks of competition in its entirety, but also to apprehend the context-dependency of competition so as to properly inform wildlife conservation schemes.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"6 ","pages":"Article 100093"},"PeriodicalIF":2.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000234/pdfft?md5=1362dc76b516bde790e0bb787dd6593a&pid=1-s2.0-S2666515824000234-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141962984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Arthropod repellent interactions with olfactory receptors and ionotropic receptors analyzed by molecular modeling","authors":"Robert Renthal","doi":"10.1016/j.cris.2024.100082","DOIUrl":"https://doi.org/10.1016/j.cris.2024.100082","url":null,"abstract":"<div><p>The main insect chemoreceptors are olfactory receptors (ORs), gustatory receptors (GRs) and ionotropic receptors (IRs). The odorant binding sites of many insect ORs appear to be occluded and inaccessible from the surface of the receptor protein, based on the three-dimensional structure of OR5 from the jumping bristletail <em>Machilis hrabei</em> (<em>Mhra</em>OR5) and a survey of a sample of vinegar fly (<em>Drosophila melanogaster</em>) OR structures obtained from artificial intellegence (A.I.) modeling. Molecular dynamics simulations revealed that the occluded site can become accessible through tunnels that transiently open and close. The present study extends this analysis to examine seventeen ORs and one GR docking with ligands that have known valence: nine that signal attraction and nine that signal aversion. All but one of the receptors displayed occluded ligand binding sites analogous to <em>Mhra</em>OR5, and docking software predicted the known attractant and repellent ligands will bind to the occluded sites. Docking of the repellent DEET was examined, and more than half of the OR ligand sites were predicted to bind DEET, including receptors that signal aversion as well as those that signal attraction. However, DEET may not actually have access to all the attractant binding sites. The larger size and lower flexibility of repellent molecules may restrict their passage through the tunnel bottlenecks, which could act as filters to select access to the ligand binding sites. In contrast to ORs and GRs, the IR ligand binding site is in an extracellular domain known to undergo a large conformational change from an open to a closed state. A.I. models of two <em>D. melanogaster</em> IRs of known valence and two blacklegged tick (<em>Ixodes scapularis</em>) IRs having unknown ligands were computationally tested for attractant and repellent binding. The ligand-binding sites in the closed state appear inaccessible to the protein surface, so attractants and repellents must bind initially at an accessible site in the open state before triggering the conformational change. In some IRs, repellent binding sites were identified at exterior sites adjacent to the ligand-binding site. These may be allosteric sites that, when occupied by repellents, can stabilize the open state of an attractant IR, or stabilize the closed state of an IR in the absence of its activating ligand. The model of <em>D. melanogaster</em> IR64a suggests a possible molecular mechanism for the activation of this IR by <em>H</em>⁺. The amino acids involved in this proposed mechanism are conserved in IR64a from several Dipteran pest species and disease vectors, potentially offering a route to discovery of new repellents that act via the allosteric site.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"5 ","pages":"Article 100082"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266651582400012X/pdfft?md5=70cfb410fe2c872ff499789f6b5196c8&pid=1-s2.0-S266651582400012X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140894459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consistent differences in tissue oxygen levels across 15 insect species reflect a balance between oxygen supply and demand and highlight a hitherto unknown adaptation for extracting sufficient oxygen from water","authors":"Jackson H. Birrell ,&nbsp;Wilco C.E.P. Verberk ,&nbsp;H. Arthur Woods","doi":"10.1016/j.cris.2024.100095","DOIUrl":"10.1016/j.cris.2024.100095","url":null,"abstract":"<div><p>Animals, including insects, need oxygen for aerobic respiration and eventually asphyxiate without it. Aerobic respiration, however, produces reactive oxygen species (ROS), which contribute to dysfunction and aging. Animals appear to balance risks of asphyxiation and ROS by regulating internal oxygen relatively low and stable, but sufficient levels. How much do levels vary among species, and how does variation depend on environment and life history? We predicted that lower internal oxygen levels occur in insects with either limited access to environmental oxygen (i.e., insects dependent on aquatic respiration, where low internal levels facilitate diffusive oxygen uptake, and reduce asphyxiation risks) or consistently low metabolic rates (i.e., inactive insects, requiring limited internal oxygen stores). Alternatively, we predicted insects with long life-stage durations would have internal oxygen levels &gt; 1 kPa (preventing high ROS levels that are believed to occur under tissue hypoxia). We tested these predictions by measuring partial pressures of oxygen (PO₂) in tissues from juvenile and adult stages across 15 species comprising nine insect orders. Tissue PO₂ varied greatly (from 0 to 18.8 kPa) and variation across species and life stages was significantly related to differences in habitat, activity level, and life stage duration. Individuals with aquatic respiration sustained remarkably low PO₂ (mean = 0.88 kPa) across all species from Ephemeroptera (mayflies), Plecoptera (stoneflies), Trichoptera (caddisflies), and Diptera (true flies), possibly reflecting a widespread, but hitherto unknown, adaptation for extracting sufficient oxygen from water. For Odonata (dragonflies), aquatic juveniles had higher PO₂ levels (mean = 6.12 kPa), but these were still lower compared to terrestrial adults (mean = 13.3 kPa). Follow-up tests in juvenile stoneflies showed that tissue PO₂ remained low even when exposed to hyperoxia, suggesting that levels were down-regulated. This was further corroborated since levels could be modulated by ambient oxygen levels in dead individuals. In addition, tissue PO₂ was positively related to activity levels of insect life stages across all species and was highest in stages with short durations. Combined, our results support the idea that internal PO₂ is an evolutionarily labile trait that reflects the balance between oxygen supply and demand within the context of the environment and life-history of an insect.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"6 ","pages":"Article 100095"},"PeriodicalIF":2.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000258/pdfft?md5=e883d413040d01f9f969cafdd597fa74&pid=1-s2.0-S2666515824000258-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142168783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An enigmatic Cretaceous beetle with possible affinity to Erotylidae (Coleoptera: Cucujiformia)","authors":"Yan-Da Li ,&nbsp;Zhen-Hua Liu ,&nbsp;Di-Ying Huang ,&nbsp;Chen-Yang Cai","doi":"10.1016/j.cris.2024.100075","DOIUrl":"https://doi.org/10.1016/j.cris.2024.100075","url":null,"abstract":"<div><p>The morphology of beetles of the recently defined superfamilies Erotyloidea, Nitiduloidea and Cucujoidea is varied. Determining the systematic positions of Mesozoic fossils within these groups can often be challenging. Here we describe and illustrate a puzzling cucujiform beetle, <em>Isocryptophilus exilipunctus</em> Li &amp; Cai <strong>gen. &amp; sp. nov.</strong>, based on an individual from mid-Cretaceous Burmese amber. While we cannot definitively pinpoint the exact phylogenetic position of <em>Isocryptophilus</em>, its possible affinity to Erotylidae is discussed in light of our phylogenetic analyses. A broader-sampled morphological matrix, coupled with a robust molecular phylogeny of these groups, will be promising for clarifying the systematic placement of the fossil.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"5 ","pages":"Article 100075"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000052/pdfft?md5=6812c80968b9675c7f9f9e7da2605894&pid=1-s2.0-S2666515824000052-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139731781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Rhodnius prolixus catalytically inactive Calpain protease patterns the insect embryonic dorsal-ventral axis","authors":"Alison Julio ,&nbsp;Tainan C. Guedes-Silva ,&nbsp;Mateus Berni ,&nbsp;Paulo Mascarello Bisch ,&nbsp;Helena Araujo","doi":"10.1016/j.cris.2024.100094","DOIUrl":"10.1016/j.cris.2024.100094","url":null,"abstract":"<div><p>The calcium dependent Calpain proteases are modulatory enzymes with important roles in cell cycle control, development and immunity. In the fly model <em>Drosophila melanogaster</em> Calpain A cleaves Cactus/IkappaB and consequently modifies Toll signals during embryonic dorsal-ventral (DV) patterning. Here we explore the role of Calpains in the hemiptera <em>Rhodnius prolixus</em>, an intermediate germband insect where the Bone Morphogenetic Protein (BMP) instead of the Toll pathway plays a major role in DV patterning. Phylogenetic analysis of Calpains in species ranging from Isoptera to Diptera indicates an increase of Calpain sequences in the <em>R. prolixus</em> genome and other hemimetabolous species. One locus encoding each of the <em>CalpC, CalpD</em> and <em>Calp7</em> families, and seven Calpain A/B loci are present in the <em>R. prolixus</em> genome. Several predicted <em>R. prolixus</em> Calpains display a unique architecture, such as loss of Calcium-binding EF-hand domains and loss of catalytic residues in the active site CysPc domain, yielding catalytically dead Calpains A/B. Knockdown for one of these inactive Calpains results in embryonic DV patterning defects, with expansion of ventral and lateral gene expression domains and consequent failure of germ band elongation. In conclusion, our results reveal that Calpains may exert a conserved function in insect DV patterning, despite the changing role of the Toll and BMP pathways in defining gene expression territories along the insect DV axis.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"6 ","pages":"Article 100094"},"PeriodicalIF":2.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000246/pdfft?md5=41d2c9ae156f861f2c8a2994a9f035f0&pid=1-s2.0-S2666515824000246-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"N-mixture models for population estimation: Application in spotted lanternfly egg mass survey","authors":"Houping Liu ,&nbsp;James T. Julian","doi":"10.1016/j.cris.2024.100078","DOIUrl":"https://doi.org/10.1016/j.cris.2024.100078","url":null,"abstract":"<div><p>Population density and structure are critical to nature conservation and pest management. Traditional sampling methods such as capture-mark-recapture and catch-effort can't be used in situations where catching, marking, or removing individuals are not feasible. N-mixture models use repeated count data to estimate population abundance based on detection probability. They are widely adopted in wildlife surveys in recent years to account for imperfect detection. However, its application in entomology is relatively new. In this paper, we describe the general procedures of N-mixture models in population studies from data collection to model fitting and evaluation. Using <em>Lycorma delicatula</em> egg mass survey data at 28 plots in seven sites from the field, we found that detection probability (<em>p</em>) was negatively correlated with tree diameter at breast height (DBH), ranged from 0.516 [95 % CI: 0.470−0.561] to 0.614 [95 % CI: 0.566−0.660] between the 1st and the 3rd sample period. Furthermore, egg mass abundance (λ) was positively associated with basal area (BA) for the sample unit (single tree), with more egg masses on tree of heaven (TOH) trees. More egg masses were also expected on trees of other species in TOH plots. Predicted egg mass density (masses/100 m²) ranged from 5.0 (95 % CI: 3.0−16.0) (Gordon) to 276.9 (95 % CI: 255.0−303.0) (Susquehannock) for TOH plots, and 11.0 (95 % CI: 9.00−15.33) (Gordon) to 228.3 (95 % CI: 209.7−248.3) (Burlington) for nonTOH plots. Site-specific abundance estimates from N-mixture models were generally higher compared to observed maximum counts. N-mixture models could have great potential in insect population surveys in agriculture and forestry in the future.</p></div>","PeriodicalId":34629,"journal":{"name":"Current Research in Insect Science","volume":"5 ","pages":"Article 100078"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666515824000088/pdfft?md5=c5c2ea2bf48085deee5a20adb1ec3d1b&pid=1-s2.0-S2666515824000088-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140330950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}