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Blackburn GS, Keeling CI, Prunier J, Keena MA, Béliveau C, Hamelin R, Havill NP, Hebert FO, Levesque RC, Cusson M, Porth I. Genetics of flight in spongy moths (Lymantria dispar ssp.): functionally integrated profiling of a complex invasive trait. BMC Genomics 2024; 25:541. [PMID: 38822259 PMCID: PMC11140922 DOI: 10.1186/s12864-023-09936-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 12/22/2023] [Indexed: 06/02/2024] Open
Abstract
BACKGROUND Flight can drastically enhance dispersal capacity and is a key trait defining the potential of exotic insect species to spread and invade new habitats. The phytophagous European spongy moths (ESM, Lymantria dispar dispar) and Asian spongy moths (ASM; a multi-species group represented here by L. d. asiatica and L. d. japonica), are globally invasive species that vary in adult female flight capability-female ASM are typically flight capable, whereas female ESM are typically flightless. Genetic markers of flight capability would supply a powerful tool for flight profiling of these species at any intercepted life stage. To assess the functional complexity of spongy moth flight and to identify potential markers of flight capability, we used multiple genetic approaches aimed at capturing complementary signals of putative flight-relevant genetic divergence between ESM and ASM: reduced representation genome-wide association studies, whole genome sequence comparisons, and developmental transcriptomics. We then judged the candidacy of flight-associated genes through functional analyses aimed at addressing the proximate demands of flight and salient features of the ecological context of spongy moth flight evolution. RESULTS Candidate gene sets were typically non-overlapping across different genetic approaches, with only nine gene annotations shared between any pair of approaches. We detected an array of flight-relevant functional themes across gene sets that collectively suggest divergence in flight capability between European and Asian spongy moth lineages has coincided with evolutionary differentiation in multiple aspects of flight development, execution, and surrounding life history. Overall, our results indicate that spongy moth flight evolution has shaped or been influenced by a large and functionally broad network of traits. CONCLUSIONS Our study identified a suite of flight-associated genes in spongy moths suited to exploration of the genetic architecture and evolution of flight, or validation for flight profiling purposes. This work illustrates how complementary genetic approaches combined with phenotypically targeted functional analyses can help to characterize genetically complex traits.
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Affiliation(s)
- Gwylim S Blackburn
- Natural Resources Canada, Pacific Forestry Centre, Canadian Forest Service, 506 Burnside Road West, Victoria, BC, V8Z 1M5, Canada.
- Natural Resources Canada, Laurentian Forestry Centre, Canadian Forest Service, 1055 Rue du PEPS, Quebec City, Québec, G1V 4C7, Canada.
- Department of Wood and Forest Sciences, Laval University, 1030 Avenue de La Médecine, Québec, QC, G1V 0A6, Canada.
| | - Christopher I Keeling
- Natural Resources Canada, Laurentian Forestry Centre, Canadian Forest Service, 1055 Rue du PEPS, Quebec City, Québec, G1V 4C7, Canada
- Department of Biochemistry, Microbiology, and Bioinformatics, Laval University, Québec, QC, G1V 0A6, Canada
| | - Julien Prunier
- Department of Wood and Forest Sciences, Laval University, 1030 Avenue de La Médecine, Québec, QC, G1V 0A6, Canada
- Institute of Integrative Biology and Systems, Laval University, Québec, QC, Canada
| | - Melody A Keena
- United States Department of Agriculture, Northern Research Station, Forest Service, 51 Mill Pond Road, Hamden, CT, 06514, USA
| | - Catherine Béliveau
- Natural Resources Canada, Laurentian Forestry Centre, Canadian Forest Service, 1055 Rue du PEPS, Quebec City, Québec, G1V 4C7, Canada
| | - Richard Hamelin
- Forest Sciences Centre, University of British Columbia, 2424 Main Mall, Vancouver, BC, 3032V6T 1Z4, Canada
| | - Nathan P Havill
- United States Department of Agriculture, Northern Research Station, Forest Service, 51 Mill Pond Road, Hamden, CT, 06514, USA
| | | | - Roger C Levesque
- Institute of Integrative Biology and Systems, Laval University, Québec, QC, Canada
| | - Michel Cusson
- Natural Resources Canada, Laurentian Forestry Centre, Canadian Forest Service, 1055 Rue du PEPS, Quebec City, Québec, G1V 4C7, Canada
- Department of Biochemistry, Microbiology, and Bioinformatics, Laval University, Québec, QC, G1V 0A6, Canada
| | - Ilga Porth
- Department of Wood and Forest Sciences, Laval University, 1030 Avenue de La Médecine, Québec, QC, G1V 0A6, Canada
- Institute of Integrative Biology and Systems, Laval University, Québec, QC, Canada
- Centre for Forest Research, Laval University, 2405 Rue de La Terrasse, Québec, QC, G1V 0A6, Canada
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Analyses of adult transcriptomes from four different populations of the spongy moth, Lymantria dispar L., from China and the USA. Sci Rep 2022; 12:18232. [PMID: 36309575 PMCID: PMC9617907 DOI: 10.1038/s41598-022-18377-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/10/2022] [Indexed: 12/31/2022] Open
Abstract
The spongy moth Lymantria dispar, formerly known as the gypsy moth, is a forest pest that occurs as two different biotypes: the European spongy moth (ESM), Lymantria dispar dispar, which is distributed in Europe and North America; and the Asian spongy moth (ASM), which consists of subspecies Lymantria dispar asiatica and Lymantria dispar japonica and is distributed in China, Russia, Korea, and Japan. The Asian biotype is classified as a quarantine pest by the U.S. Department of Agriculture because of the superior flight ability of adult females compared to females of the European biotype. To identify genes that potentially account for differences in female flight capability between the two biotypes, we assembled and compared transcriptional profiles of two North American populations of ESM and two Chinese populations of ASM, including samples of unmated female adults and females after mating and oviposition. Of 129,286 unigenes identified, 306 were up-regulated in ASM samples relative to ESM, including genes involved in egg production. In contrast, 2309 unigenes were down-regulated in ASM samples, including genes involved in energy production. Although a previous study found that ASM female flight was reduced after oviposition, a comparison of gene expression before and after mating and oviposition did not reveal any genes which were consistently up- or down-regulated in the two ASM populations.
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Cong Y, Ye X, Mei Y, He K, Li F. Transposons and Non-coding Regions Drive the Intrafamily Differences of Genome Size in Insects. iScience 2022; 25:104873. [PMID: 36039293 PMCID: PMC9418806 DOI: 10.1016/j.isci.2022.104873] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 06/24/2022] [Accepted: 07/29/2022] [Indexed: 11/02/2022] Open
Abstract
Genome size (GS) can vary considerably between phylogenetically close species, but the landscape of GS changes in insects remain largely unclear. To better understand the specific evolutionary factors that determine GS in insects, we examined flow cytometry-based published GS data from 1,326 insect species, spanning 700 genera, 155 families, and 21 orders. Model fitting showed that GS generally followed an Ornstein–Uhlenbeck adaptive evolutionary model in Insecta overall. Ancestral reconstruction indicated a likely GS of 1,069 Mb, suggesting that most insect clades appeared to undergo massive genome expansions or contractions. Quantification of genomic components in 56 species from nine families in four insect orders revealed that the proliferation of transposable elements contributed to high variation in GS between close species, such as within Coleoptera. This study sheds lights on the pattern of GS variation in insects and provides a better understanding of insect GS evolution. The most comprehensive variation pattern of insects genome size (GS) to date GS evolution of the Insecta was reflected by the adaptive Ornstein–Uhlenbeck model Ancestral state of insect GS was estimated to be ∼1 Gb Intrafamily GS variations were driven by recent transpositions and non-coding regions
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Meslin C, Mainet P, Montagné N, Robin S, Legeai F, Bretaudeau A, Johnston JS, Koutroumpa F, Persyn E, Monsempès C, François MC, Jacquin-Joly E. Spodoptera littoralis genome mining brings insights on the dynamic of expansion of gustatory receptors in polyphagous noctuidae. G3 (BETHESDA, MD.) 2022; 12:6598846. [PMID: 35652787 PMCID: PMC9339325 DOI: 10.1093/g3journal/jkac131] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/17/2022] [Indexed: 11/13/2022]
Abstract
The bitter taste, triggered via gustatory receptors, serves as an important natural defense against the ingestion of poisonous foods in animals, and the increased host breadth is usually linked to an increase in the number of gustatory receptor genes. This has been especially observed in polyphagous insect species, such as noctuid species from the Spodoptera genus. However, the dynamic and physical mechanisms leading to these gene expansions and the evolutionary pressures behind them remain elusive. Among major drivers of genome dynamics are the transposable elements but, surprisingly, their potential role in insect gustatory receptor expansion has not been considered yet. In this work, we hypothesized that transposable elements and possibly positive selection would be involved in the highly dynamic evolution of gustatory receptor in Spodoptera spp. We first sequenced de novo the full 465 Mb genome of S. littoralis, and manually annotated the main chemosensory genes, including a large repertoire of 373 gustatory receptor genes (including 19 pseudogenes). We also improved the completeness of S. frugiperda and S. litura gustatory receptor gene repertoires. Then, we annotated transposable elements and revealed that a particular category of class I retrotransposons, the SINE transposons, was significantly enriched in the vicinity of gustatory receptor gene clusters, suggesting a transposon-mediated mechanism for the formation of these clusters. Selection pressure analyses indicated that positive selection within the gustatory receptor gene family is cryptic, only 7 receptors being identified as positively selected. Altogether, our data provide a new good quality Spodoptera genome, pinpoint interesting gustatory receptor candidates for further functional studies and bring valuable genomic information on the mechanisms of gustatory receptor expansions in polyphagous insect species.
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Affiliation(s)
- Camille Meslin
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris), 78026 Versailles, France
| | - Pauline Mainet
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris), 78026 Versailles, France
| | - Nicolas Montagné
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris), 78026 Versailles, France
| | - Stéphanie Robin
- INRAE, UMR Institut de Génétique, Environnement et Protection des Plantes (IGEPP), BioInformatics Platform for Agroecosystems Arthropods (BIPAA), Campus Beaulieu, 35042 Rennes, France.,INRIA, IRISA, GenOuest Core Facility, Campus de Beaulieu, Rennes 5042, France
| | - Fabrice Legeai
- INRAE, UMR Institut de Génétique, Environnement et Protection des Plantes (IGEPP), BioInformatics Platform for Agroecosystems Arthropods (BIPAA), Campus Beaulieu, 35042 Rennes, France.,INRIA, IRISA, GenOuest Core Facility, Campus de Beaulieu, Rennes 5042, France
| | - Anthony Bretaudeau
- INRAE, UMR Institut de Génétique, Environnement et Protection des Plantes (IGEPP), BioInformatics Platform for Agroecosystems Arthropods (BIPAA), Campus Beaulieu, 35042 Rennes, France.,INRIA, IRISA, GenOuest Core Facility, Campus de Beaulieu, Rennes 5042, France
| | - J Spencer Johnston
- Department of Entomology, Texas A&M University, College Station, TX 77843, USA
| | - Fotini Koutroumpa
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris), 78026 Versailles, France.,Present address: INRAE, Université Tours, Infectiologie et Santé Publique (ISP), 37380 Nouzilly, France
| | - Emma Persyn
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris), 78026 Versailles, France.,CIRAD, UMR PVBMT, Réunion, France
| | - Christelle Monsempès
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris), 78026 Versailles, France
| | - Marie-Christine François
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris), 78026 Versailles, France
| | - Emmanuelle Jacquin-Joly
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université de Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris), 78026 Versailles, France
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Béliveau C, Gagné P, Picq S, Vernygora O, Keeling CI, Pinkney K, Doucet D, Wen F, Spencer Johnston J, Maaroufi H, Boyle B, Laroche J, Dewar K, Juretic N, Blackburn G, Nisole A, Brunet B, Brandão M, Lumley L, Duan J, Quan G, Lucarotti CJ, Roe AD, Sperling FAH, Levesque RC, Cusson M. The Spruce Budworm Genome: Reconstructing the Evolutionary History of Antifreeze Proteins. Genome Biol Evol 2022; 14:evac087. [PMID: 35668612 PMCID: PMC9210311 DOI: 10.1093/gbe/evac087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/27/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Insects have developed various adaptations to survive harsh winter conditions. Among freeze-intolerant species, some produce "antifreeze proteins" (AFPs) that bind to nascent ice crystals and inhibit further ice growth. Such is the case of the spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae), a destructive North American conifer pest that can withstand temperatures below -30°C. Despite the potential importance of AFPs in the adaptive diversification of Choristoneura, genomic tools to explore their origins have until now been limited. Here we present a chromosome-scale genome assembly for C. fumiferana, which we used to conduct comparative genomic analyses aimed at reconstructing the evolutionary history of tortricid AFPs. The budworm genome features 16 genes homologous to previously reported C. fumiferana AFPs (CfAFPs), 15 of which map to a single region on chromosome 18. Fourteen of these were also detected in five congeneric species, indicating Choristoneura AFP diversification occurred before the speciation event that led to C. fumiferana. Although budworm AFPs were previously considered unique to the genus Choristoneura, a search for homologs targeting recently sequenced tortricid genomes identified seven CfAFP-like genes in the distantly related Notocelia uddmanniana. High structural similarity between Notocelia and Choristoneura AFPs suggests a common origin, despite the absence of homologs in three related tortricids. Interestingly, one Notocelia AFP formed the C-terminus of a "zonadhesin-like" protein, possibly representing the ancestral condition from which tortricid AFPs evolved. Future work should clarify the evolutionary path of AFPs between Notocelia and Choristoneura and assess the role of the "zonadhesin-like" protein as precursor of tortricid AFPs.
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Affiliation(s)
- Catherine Béliveau
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
| | - Patrick Gagné
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
| | - Sandrine Picq
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
| | - Oksana Vernygora
- Department of Entomology, University of Kentucky, Lexington, Kentucky, USA
| | - Christopher I Keeling
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
- Département de biochimie, de microbiologie et de bio-informatique, Université Laval, Quebec City, Quebec, Canada
| | - Kristine Pinkney
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
| | - Daniel Doucet
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
| | - Fayuan Wen
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington DC, USA
| | - J Spencer Johnston
- Department of Entomology, Texas A&M University, 2475 College Station, Texas, USA
| | - Halim Maaroufi
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
| | - Brian Boyle
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
| | - Jérôme Laroche
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
| | - Ken Dewar
- Quantitative Life Sciences, McGill University, Montreal, Quebec, Canada
| | - Nikoleta Juretic
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Gwylim Blackburn
- Pacific Forestry Centre, Natural Resources Canada, Victoria, British Columbia, Canada
| | - Audrey Nisole
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
| | - Bryan Brunet
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada
| | - Marcelo Brandão
- Laboratório de Biologia Integrativa e Sistêmica - CBMEG/UNICAMP, Campinas, Brazil
| | - Lisa Lumley
- Alberta Biodiversity Monitoring Institute, University of Alberta, Edmonton, Alberta, Canada
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Jun Duan
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Guoxing Quan
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
| | | | - Amanda D Roe
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
| | - Felix A H Sperling
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Roger C Levesque
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
| | - Michel Cusson
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
- Département de biochimie, de microbiologie et de bio-informatique, Université Laval, Quebec City, Quebec, Canada
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
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Sparks ME, Hebert FO, Johnston JS, Hamelin R, Cusson M, Levesque R, Gundersen-Rindal DE. Sequencing, Assembly and Annotation of the Whole-Insect Genome of Lymantria dispar dispar, the European Gypsy Moth. G3-GENES GENOMES GENETICS 2021; 11:6261075. [PMID: 33930134 DOI: 10.1093/g3journal/jkab150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/26/2021] [Indexed: 11/14/2022]
Abstract
The European gypsy moth, Lymantria dispar dispar (LDD), is an invasive insect and a threat to urban trees, forests and forest-related industries in North America. For use as a comparator with a previously published genome based on the LD652 pupal ovary-derived cell line, as well as whole-insect genome sequences obtained from the Asian gypsy moth subspecies L. dispar asiatica and L. dispar japonica, the whole-insect LDD genome was sequenced, assembled and annotated. The resulting assembly was 998 Mb in size, with a contig N50 of 662 Kb and GC content of 38.8%. Long interspersed nuclear elements (LINEs) constitute 25.4% of the whole-insect genome, and a total of 11,901 genes predicted by automated gene finding encoded proteins exhibiting homology with reference sequences in the NCBI NR and/or UniProtKB databases at the most stringent similarity cutoff level (i.e., the gold tier). These results will be especially useful in developing a better understanding of the biology and population genetics of L. dispar and the genetic features underlying Lepidoptera in general.
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Affiliation(s)
- Michael E Sparks
- USDA-ARS Invasive Insect Biocontrol and Behavior Laboratory, Beltsville, Maryland 20705, USA
| | - Francois Olivier Hebert
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Quebec City, Quebec, Canada, G1V 0A6
| | - J Spencer Johnston
- Department of Entomology, Texas A&M University, College Station, Texas 77843, USA
| | - Richard Hamelin
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Quebec City, Quebec, Canada, G1V 0A6.,Department of Forest and Conservation Sciences, Faculty of Forestry, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z4
| | - Michel Cusson
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Quebec City, Quebec, Canada, G1V 0A6.,Laurentian Forestry Centre, Canadian Forest Service, Natural Resources Canada, Quebec City, Quebec, Canada, G1V 4C7
| | - Roger Levesque
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Quebec City, Quebec, Canada, G1V 0A6
| | - Dawn E Gundersen-Rindal
- USDA-ARS Invasive Insect Biocontrol and Behavior Laboratory, Beltsville, Maryland 20705, USA
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Potential Differences and Methods of Determining Gypsy Moth Female Flight Capabilities: Implications for the Establishment and Spread in Novel Habitats. FORESTS 2021. [DOI: 10.3390/f12010103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The introduction of the Asian gypsy moth into novel environments continues with frequent interceptions in North America. There is a concern that these subspecies will pose a greater threat to the forests and urban environments of North America than the established gypsy moths (Lymantria dispardispar L.), due to their greater capacity for female flight. Asian gypsy moth populations vary in many key traits, including female flight capabilities. The potential impacts of female flight, in combination with the other key traits, on the ecology and spread of this insect are first discussed in this communication. This also provides the first review of most of the current literature on the variations in flight capability and flight distance of gypsy moth populations, as well as variation in other traits of concern and the potential methods of identification, with special attention paid to the Asian subspecies Lymantria dispar japonica Motschulsky and Lymantria dispar asiatica Vinkovskij. There are currently good tools for identifying the general origin of introduced gypsy moth populations, but these do not provide enough information to effectively manage introductions. Gypsy moth key traits differ among populations, even within each subspecies of the gypsy moth, so introduction of gypsy moths from other world areas into locations where the gypsy moth is already present could result in unwanted changes in gypsy moth biology. It also appears that the introduction of flight-capable females could enhance a population’s dispersal capability and require modifications to management protocols used for flightless females. Therefore, rapid tools to assess key traits in introduced populations are needed to adequately plan for, or deal with, new introductions into novel habitats.
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