Dataset Information

Crop pests and predators exhibit inconsistent responses to surrounding landscape composition.

ABSTRACT: The idea that noncrop habitat enhances pest control and represents a win-win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are measured. Here, we use a pest-control database encompassing 132 studies and 6,759 sites worldwide to model natural enemy and pest abundances, predation rates, and crop damage as a function of landscape composition. Our results showed that although landscape composition explained significant variation within studies, pest and enemy abundances, predation rates, crop damage, and yields each exhibited different responses across studies, sometimes increasing and sometimes decreasing in landscapes with more noncrop habitat but overall showing no consistent trend. Thus, models that used landscape-composition variables to predict pest-control dynamics demonstrated little potential to explain variation across studies, though prediction did improve when comparing studies with similar crop and landscape features. Overall, our work shows that surrounding noncrop habitat does not consistently improve pest management, meaning habitat conservation may bolster production in some systems and depress yields in others. Future efforts to develop tools that inform farmers when habitat conservation truly represents a win-win would benefit from increased understanding of how landscape effects are modulated by local farm management and the biology of pests and their enemies.

SUBMITTER: Karp DS

PROVIDER: S-EPMC6099893 | biostudies-other | 2018 Aug

REPOSITORIES: biostudies-other

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Crop pests and predators exhibit inconsistent responses to surrounding landscape composition.

Karp Daniel S DS Chaplin-Kramer Rebecca R Meehan Timothy D TD Martin Emily A EA DeClerck Fabrice F Grab Heather H Gratton Claudio C Hunt Lauren L Larsen Ashley E AE Martínez-Salinas Alejandra A O'Rourke Megan E ME Rusch Adrien A Poveda Katja K Jonsson Mattias M Rosenheim Jay A JA Schellhorn Nancy A NA Tscharntke Teja T Wratten Stephen D SD Zhang Wei W Iverson Aaron L AL Adler Lynn S LS Albrecht Matthias M Alignier Audrey A Angelella Gina M GM Zubair Anjum Muhammad M Avelino Jacques J Batáry Péter P Baveco Johannes M JM Bianchi Felix J J A FJJA Birkhofer Klaus K Bohnenblust Eric W EW Bommarco Riccardo R Brewer Michael J MJ Caballero-López Berta B Carrière Yves Y Carvalheiro Luísa G LG Cayuela Luis L Centrella Mary M Ćetković Aleksandar A Henri Dominic Charles DC Chabert Ariane A Costamagna Alejandro C AC De la Mora Aldo A de Kraker Joop J Desneux Nicolas N Diehl Eva E Diekötter Tim T Dormann Carsten F CF Eckberg James O JO Entling Martin H MH Fiedler Daniela D Franck Pierre P Frank van Veen F J FJ Frank Thomas T Gagic Vesna V Garratt Michael P D MPD Getachew Awraris A Gonthier David J DJ Goodell Peter B PB Graziosi Ignazio I Groves Russell L RL Gurr Geoff M GM Hajian-Forooshani Zachary Z Heimpel George E GE Herrmann John D JD Huseth Anders S AS Inclán Diego J DJ Ingrao Adam J AJ Iv Phirun P Jacot Katja K Johnson Gregg A GA Jones Laura L Kaiser Marina M Kaser Joe M JM Keasar Tamar T Kim Tania N TN Kishinevsky Miriam M Landis Douglas A DA Lavandero Blas B Lavigne Claire C Le Ralec Anne A Lemessa Debissa D Letourneau Deborah K DK Liere Heidi H Lu Yanhui Y Lubin Yael Y Luttermoser Tim T Maas Bea B Mace Kevi K Madeira Filipe F Mader Viktoria V Cortesero Anne Marie AM Marini Lorenzo L Martinez Eliana E Martinson Holly M HM Menozzi Philippe P Mitchell Matthew G E MGE Miyashita Tadashi T Molina Gonzalo A R GAR Molina-Montenegro Marco A MA O'Neal Matthew E ME Opatovsky Itai I Ortiz-Martinez Sebaastian S Nash Michael M Östman Örjan Ö Ouin Annie A Pak Damie D Paredes Daniel D Parsa Soroush S Parry Hazel H Perez-Alvarez Ricardo R Perović David J DJ Peterson Julie A JA Petit Sandrine S Philpott Stacy M SM Plantegenest Manuel M Plećaš Milan M Pluess Therese T Pons Xavier X Potts Simon G SG Pywell Richard F RF Ragsdale David W DW Rand Tatyana A TA Raymond Lucie L Ricci Benoît B Sargent Chris C Sarthou Jean-Pierre JP Saulais Julia J Schäckermann Jessica J Schmidt Nick P NP Schneider Gudrun G Schüepp Christof C Sivakoff Frances S FS Smith Henrik G HG Stack Whitney Kaitlin K Stutz Sonja S Szendrei Zsofia Z Takada Mayura B MB Taki Hisatomo H Tamburini Giovanni G Thomson Linda J LJ Tricault Yann Y Tsafack Noelline N Tschumi Matthias M Valantin-Morison Muriel M Van Trinh Mai M van der Werf Wopke W Vierling Kerri T KT Werling Ben P BP Wickens Jennifer B JB Wickens Victoria J VJ Woodcock Ben A BA Wyckhuys Kris K Xiao Haijun H Yasuda Mika M Yoshioka Akira A Zou Yi Y

Proceedings of the National Academy of Sciences of the United States of America 20180802 33

The idea that noncrop habitat enhances pest control and represents a win-win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation i ...[more]

PMID: 30072434

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Project description:BACKGROUND:The western flower thrips, Frankliniella occidentalis (Pergande), is a globally invasive pest and plant virus vector on a wide array of food, fiber, and ornamental crops. The underlying genetic mechanisms of the processes governing thrips pest and vector biology, feeding behaviors, ecology, and insecticide resistance are largely unknown. To address this gap, we present the F. occidentalis draft genome assembly and official gene set. RESULTS:We report on the first genome sequence for any member of the insect order Thysanoptera. Benchmarking Universal Single-Copy Ortholog (BUSCO) assessments of the genome assembly (size?=?415.8?Mb, scaffold N50?=?948.9 kb) revealed a relatively complete and well-annotated assembly in comparison to other insect genomes. The genome is unusually GC-rich (50%) compared to other insect genomes to date. The official gene set (OGS v1.0) contains 16,859 genes, of which ~?10% were manually verified and corrected by our consortium. We focused on manual annotation, phylogenetic, and expression evidence analyses for gene sets centered on primary themes in the life histories and activities of plant-colonizing insects. Highlights include the following: (1) divergent clades and large expansions in genes associated with environmental sensing (chemosensory receptors) and detoxification (CYP4, CYP6, and CCE enzymes) of substances encountered in agricultural environments; (2) a comprehensive set of salivary gland genes supported by enriched expression; (3) apparent absence of members of the IMD innate immune defense pathway; and (4) developmental- and sex-specific expression analyses of genes associated with progression from larvae to adulthood through neometaboly, a distinct form of maturation differing from either incomplete or complete metamorphosis in the Insecta. CONCLUSIONS:Analysis of the F. occidentalis genome offers insights into the polyphagous behavior of this insect pest that finds, colonizes, and survives on a widely diverse array of plants. The genomic resources presented here enable a more complete analysis of insect evolution and biology, providing a missing taxon for contemporary insect genomics-based analyses. Our study also offers a genomic benchmark for molecular and evolutionary investigations of other Thysanoptera species.

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Crop pests and predators exhibit inconsistent responses to surrounding landscape composition.

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Crop pests and predators exhibit inconsistent responses to surrounding landscape composition.

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