Insect Conservation and Diversity最新文献

{"title":"Network structure and taxonomic composition of tritrophic communities of Fagaceae, cynipid gallwasps and parasitoids in Sichuan, China","authors":"Zhiqiang Fang, Chang‐Ti Tang, Frazer Sinclair, György L. Csóka, J. Hearn, Koorosh McCormack, G. Melika, Katarzyna M. Mikołajczak, James A. Nicholls, J. Nieves‐Aldrey, D. Notton, Sara Radosevic, R. A. Bailey, Alex Reiss, Yuanmeng M. Zhang, Ying Zhu, Shengguo Fang, K. Schönrogge, Graham N. Stone","doi":"10.1111/icad.12768","DOIUrl":"https://doi.org/10.1111/icad.12768","url":null,"abstract":"\u0000A key question in insect community ecology is whether parasitoid assemblages are structured by the food plants of their herbivore hosts.\u0000Tritrophic communities centred on oak‐feeding cynipid gallwasps are one of the best‐studied tritrophic insect communities. Previous work suggests that host plant identity is a much stronger predictor of oak–cynipid interactions than of cynipid–parasitoid interactions. However, these relationships have not been formally quantified.\u0000We reason that the potential for ‘bottom‐up’ effects should increase with host plant phylogenetic diversity. We, therefore, generated quantified interaction network data for previously unstudied tritrophic cynipid communities in Sichuan, China, where, in addition to Quercus, cynipid host plants include Castanea, Castanopsis and Lithocarpus. We characterise these communities taxonomically and compare the extent to which host plant taxonomy predicts plant–herbivore and plant–parasitoid associations.\u0000We sampled 42,620 cynipid galls of 176 morphotypes from 23 host plant species, yielding over 4500 specimens of 64 parasitoid morphospecies. Many parasitoids were identifiable to chalcidoid taxa present in other Holarctic oak cynipid communities, with the addition of Cynipencyrtus (Cynipencyrtidae). As elsewhere, Sichuan parasitoid assemblages were dominated by generalists.\u0000Gallwasp–plant interaction networks were significantly more modular than parasitoid–plant association networks. Gallwasps were significantly more specialised to host plants (i.e. had higher mean d' values) than parasitoids. Parasitoid assemblages nevertheless showed significant plant‐associated beta diversity, with a dominant turnover component.\u0000We summarise parallels between our study and other Fagaceae‐associated cynipid communities and discuss our findings in light of the processes thought to structure tritrophic interactions centred on endophytic insect herbivores.\u0000","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141643277","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":"Long‐distance movements, large population sizes and density‐dependent dispersal in three threatened butterfly species","authors":"Markus Franzén, Håkan Johansson, J. Askling, O. Kindvall, Victor Johansson, Anders Forsman, Johanna Sunde","doi":"10.1111/icad.12766","DOIUrl":"https://doi.org/10.1111/icad.12766","url":null,"abstract":"\u0000This study investigates the ecology of three threatened butterfly species on a 60 km2 site in Gotland, Southeast Sweden, using mark–recapture methods from 2017 to 2020.\u0000Nearly 30,000 captures were recorded, with average lifespans of 6 days for Euphydryas aurinia (Lepidoptera: Nymphalidae) and Parnassius apollo (Lepidoptera: Papilionidae) and 2 days for Phengaris arion (Lepidoptera: Lycaenidae).\u0000Population size, density and maximum flight distances varied between species, with E. aurinia at 7.2 km, P. apollo at 6.4 km and P. arion at 2.5 km.\u0000Movement data showed the lognormal kernel fit better than gamma, negative exponential and half‐normal kernels for distance travelled per time unit across species and sexes.\u0000Generalised linear models revealed significant positive density‐dependent emigration and negative density‐dependent immigration in all three species.\u0000Despite available suitable habitats, these species face threats from limestone quarry expansions, agricultural intensification, modified forestry practices, natural succession and climate change, highlighting the need for proactive conservation and strategic habitat management.\u0000","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141650191","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":"Weather explains inter‐annual variability, but not the temporal decline, in insect biomass","authors":"François Duchenne, Colin Fontaine","doi":"10.1111/icad.12769","DOIUrl":"https://doi.org/10.1111/icad.12769","url":null,"abstract":"<jats:list> <jats:list-item>Müller et al. re‐analysed published data on temporal variation in insect biomass in Germany between 1989 and 2016, with a focus on modelling the effects of weather conditions on insect biomass.</jats:list-item> <jats:list-item>These upgraded analyses, using an external validation dataset, are a nice demonstration of the strong impact of climatic conditions on annual insect biomass. However, Müller et al.'s conclusion that temporal variation in weather conditions explained most of the temporal changes in insect biomass was overstated. We argue that their methodological approach was unsuitable to draw such conclusion, because of omitted variable bias.</jats:list-item> <jats:list-item>We re‐ran the analyses of Müller et al. but accounting for a remaining temporal trend in insect biomass due to missing drivers. Our results suggest that the main conclusion of Müller et al. was wrong: there is a significant temporal decline in insect biomass that is not explained by weather conditions.</jats:list-item> <jats:list-item>Our commentary recalls that not accounting for missing predictors is likely to produce highly biased results, especially when missing predictors are correlated with the available ones, which is likely to be the case for most of the anthropogenic pressures linked to global change. This highlights the difficult challenge of estimating the relative importance of the global change components in driving the observed biodiversity changes.</jats:list-item> </jats:list>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612506","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":"Small stream floodplains have high conservation value for riparian carabid beetles but less for ground-dwelling spiders","authors":"Peer Bauspiess,&nbsp;Sebastian Kolb,&nbsp;Tanja J. Joschko,&nbsp;Ralf Schulz,&nbsp;Jens Schirmel","doi":"10.1111/icad.12759","DOIUrl":"10.1111/icad.12759","url":null,"abstract":"<p>\u0000 </p>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/icad.12759","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Species traits to guide moth conservation in anthropogenic regions: A multi‐species approach using distribution trends in Flanders (northern Belgium)","authors":"Dirk Maes, Ward Langeraert, Thierry Onkelinx, Hans Van Calster, Wim Veraghtert, Thomas Merckx","doi":"10.1111/icad.12767","DOIUrl":"https://doi.org/10.1111/icad.12767","url":null,"abstract":"<jats:list> <jats:list-item>Insect abundance and diversity appear to decline rapidly in recent decades, garnering significant media attention, and hence raising public awareness.</jats:list-item> <jats:list-item>Macro‐moths—a species‐rich and ecologically diverse insect group—face severe declines, particularly in urbanised and intensively farmed areas in NW Europe.</jats:list-item> <jats:list-item>Flanders is a highly anthropogenic region, serving as a case study where the impact on macro‐moths of stressors like intensive agriculture, industrialisation and urbanisation has been quantified through a recently compiled Red List. Here, for 717 macro‐moth species, we calculated relative changes in distribution area between a reference period (1980–2012) and the subsequent period (2013–2022). By correlating these species‐specific trends with 10 key ecological and life history traits, we calculated more general Multi‐Species Change Indices (MSCIs).</jats:list-item> <jats:list-item>These MSCIs showed that species associated with wet biotopes and heathlands declined on average by 20%–25%, while (sub)urban species increased by more than 60%. Species feeding on lichens or mosses increased by 31%, while grass‐feeding species decreased by 20%. Both very small (+34%) and very large species (+15%) increased, whereas medium‐sized species decreased by 5%. Monophagous (+17%), migrant (+88%) and colour‐invariable species (+5%) increased, while colour‐variable species decreased (−8%). Finally, Holarctic (−21%) and Palaearctic species (−5%) decreased, while Mediterranean (+27%) and Western‐Palaearctic species (+9%) increased.</jats:list-item> <jats:list-item>Our trait‐based approach identifies key threats and mitigation strategies for moths in anthropogenic regions, offering evidence‐based insights for crafting efficient management recommendations and informed conservation policies to safeguard moth communities.</jats:list-item> </jats:list>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566632","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":"The role of changing landscape in the dispersal of a soil‐feeding termite in Suriname and French Guiana","authors":"Damien Gergonne, Chantal Poteaux, Yoan Fourcade, Romain Fougeyrollas, Robert Hanus, David Sillam‐Dussès, Virginie Roy","doi":"10.1111/icad.12761","DOIUrl":"https://doi.org/10.1111/icad.12761","url":null,"abstract":"<jats:list> <jats:list-item>Neotropical forest ecosystems harbour significant biodiversity. To develop effective insect conservation practices, it is important to understand the factors that influence the diversity and population structure of the species.</jats:list-item> <jats:list-item>Dispersal, a key determinant of population structure, is well studied in termites nesting in wood, for which it can be influenced by wood transport, or in termites living in urban environments. However, understanding the dispersal of termites whose mobility remains unaffected by wood transport remains understudied.</jats:list-item> <jats:list-item>We investigated the dispersal of <jats:italic>Embiratermes neotenicus</jats:italic>, a soil‐feeding species with short dispersal distance, in the Neotropical region, where both intact and degraded forests exist. Using mitochondrial and nuclear data, we analysed genetic diversity, structure and factors contributing to population differentiation in Suriname and French Guiana at multiple scales for 70 colonies.</jats:list-item> <jats:list-item>The population in French Guiana is the ancestral population in the region that subsequently expanded.</jats:list-item> <jats:list-item>Significant genetic differentiation between populations was observed, with distinct patterns identified in Suriname and French Guiana. The Suriname population showed higher genetic diversity and no subpopulation differentiation, whereas the French Guiana population showed substructure into distinct genetic clusters.</jats:list-item> <jats:list-item>Analyses at the scale of all colonies suggest the influence of landscape features, such as the Maroni River, on genetic differentiation. At the local scale, genetic differentiation between colonies increases with forest alteration, even when this does not include major changes in forest cover.</jats:list-item> <jats:list-item>Our results highlight the sensitivity of soil‐feeding termite populations to habitat change. We argue that multi‐scale studies are needed for a comprehensive understanding of genetic patterns, especially for species with short dispersal distances.</jats:list-item> </jats:list>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566633","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":"Ecologically sustainable retention forestry supports spider biodiversity in the Lower Morava UNESCO Biosphere Reserve","authors":"Tomáš Hamřík, Róbert Gallé, Ondřej Košulič","doi":"10.1111/icad.12765","DOIUrl":"https://doi.org/10.1111/icad.12765","url":null,"abstract":"<jats:list> <jats:list-item>Floodplain forests are among the most endangered ecosystems worldwide, even though they are hotspots for numerous taxa. The abandonment of traditional management and large‐scale timber extraction, such as clear‐cutting, has led to a decline in floodplain forest biodiversity. Retention forestry has the potential to facilitate the implementation of an ecologically sustainable forest management approach. Despite the increasing popularity of this method, its potential for spider diversity conservation, especially its comparison with the widespread practice of clear‐cutting, is still poorly studied.</jats:list-item> <jats:list-item>We studied the short‐term effect of forestry treatments (dispersed retention with 60% retained trees and clear‐cutting) on the diversity of ground‐dwelling spiders in the floodplain forests along the Lower Morava (March) and Dyje (Thaya) rivers in the Czech Republic. Spiders were sampled using pitfall traps during 2021 (pre‐harvest year) and 2022 (post‐harvest year).</jats:list-item> <jats:list-item>A total of 10,005 specimens from 167 species were recorded. Both forestry treatments simplified habitat structure compared with pre‐harvest conditions, resulting in lower beta‐diversity within sites. However, dispersed retention had higher alpha‐ and beta‐diversity than clear‐cuts, indicating that retention provided a more complex‐structured habitat. Dispersed retention and clear‐cuts hosted distinct spider assemblages with characteristic indicator species. Species typical of open and significantly disturbed habitats preferred clear‐cuts, while species typical of forests and (semi‐) open habitats, including threatened species, showed a preference for dispersed retention.</jats:list-item> <jats:list-item>Our results demonstrated, for the first time, that dispersed retention forestry could serve as an effective management tool for conserving the ground‐dwelling assemblages of spiders in floodplain forests.</jats:list-item> </jats:list>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548373","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":"Odonata responses to dispersal and niche processes differ across Amazonian endemism regions","authors":"Joás Silva Brito, Karl Cottenie, Gabriel Martins Cruz, Lenize Batista Calvão, José Max Barbosa Oliveira‐Junior, Fernando Geraldo Carvalho, Leandro Schlemmer Brasil, Karina Dias‐Silva, Rafael Costa Bastos, Bethânia Oliveira Resende, Victor Rennan Santos Ferreira, Lisandro Juno Soares Vieira, Thaisa Sala Michelan, Leandro Juen","doi":"10.1111/icad.12764","DOIUrl":"https://doi.org/10.1111/icad.12764","url":null,"abstract":"<jats:list> <jats:list-item>Niche and dispersal‐based processes govern freshwater communities, such as aquatic insects, shaping their distribution and establishment in the environment. So, we aimed to address the relative influence of niche and dispersal‐based processes on Odonata diversity in Amazonian freshwater systems, and the influence of species dispersal functional traits on their longitudinal and latitudinal ranges.</jats:list-item> <jats:list-item>We used the Dispersal‐Niche Continuum Index (DNCI) to test (i) regions more distant would present a prevalence of dispersal‐based processes, and (ii) different patterns would come from the two Odonata suborders; and by applying generalised linear models, we tested (iii) dispersal‐related functional traits from the suborders would influence latitudinal and longitudinal midpoints of the species.</jats:list-item> <jats:list-item>We found that more distant regions had lower values of pairwise Dispersal–Niche Continuum, mainly for Zygoptera, corroborating our first hypothesis. Moreover, Zygoptera also presented the lowest absolute values of Dispersal–Niche Continuum and Anisoptera presented a joint influence of niche and dispersal‐based processes, agreeing with our second hypothesis. Only Zygoptera presented a significant association between dispersal functional traits and longitudinal midpoints, corroborating our third hypothesis.</jats:list-item> <jats:list-item>Our results indicated a prevalence of dispersal‐related processes for Zygoptera, which can be explained by massive geographical barriers, such as the rivers, and their narrow physiological and ecological tolerance. Moreover, dispersal‐related traits demonstrated significant influence on longitudinal midpoints of Zygoptera, a scenario that the presence of the rivers may explain. A better understanding of the prevalent predictors of the species and how their dispersal ability governs their distribution has conservational implications.</jats:list-item> </jats:list>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508564","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":"Host plants and landscape predict use of roadside habitat by breeding monarchs","authors":"Alison J. Banks Cariveau,&nbsp;Grace A. Haynes,&nbsp;Patrick Perish,&nbsp;Karen Tuerk,&nbsp;Chris Nootenboom,&nbsp;Timothy Mitchell,&nbsp;Eric Lonsdorf,&nbsp;Karen Oberhauser,&nbsp;Emilie C. Snell-Rood","doi":"10.1111/icad.12758","DOIUrl":"10.1111/icad.12758","url":null,"abstract":"<p>\u0000 </p>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/icad.12758","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling decisions and density dependence in monarch butterflies: A comment on Meehan and Crossley (2023)","authors":"Elizabeth E. Crone, Atticus W. Murphy, Cheryl B. Schultz","doi":"10.1111/icad.12763","DOIUrl":"https://doi.org/10.1111/icad.12763","url":null,"abstract":"<jats:list> <jats:list-item>Decisions about which processes to include in a population model can have substantial impact on estimates of population trends and extinction risk. This is particularly important for species of conservation concern, whose conservation status is decided in part on the basis of these models.</jats:list-item> <jats:list-item>In their recent paper, Meehan and Crossley (2023) <jats:italic>Insect Conservation and Diversity</jats:italic>, 16, 566–573 revisit a time series of overwintering monarch butterfly abundances, which previous assessments had characterised as rapidly declining and at risk of extinction. The authors, in contrast, reported no evidence for declines in the past 10 years and characterised extinction risk as low.</jats:list-item> <jats:list-item>A primary reason for the difference between these conclusions was that Meehan and Crossley used a more complex model that included a parameter for density dependence. While negative density dependence may play a role in monarch population regulation, there are a variety of unresolved issues with how and if density dependence should be included in models of monarch populations, including widely known issues with separating observation error from density dependence in noisy time series and taxon‐specific issues with fitting models to data surveyed every fourth generation and pooled at continental scales.</jats:list-item> <jats:list-item>These issues make the conclusions of Meehan and Crossley about monarch population viability much less robust than implied in their article. They do not provide convincing evidence that density dependence reduces extinction risk in monarch butterflies. Our commentary supports their general conclusion that population viability projections depend on model assumptions, but the ways in which monarch butterfly populations are regulated remains an open question.</jats:list-item> </jats:list>","PeriodicalId":13640,"journal":{"name":"Insect Conservation and Diversity","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508563","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}