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Fezza T, Shelly TE, Fox A, Beucke K, Rohrig E, Aldebron C, Manoukis NC. Less is more: Fewer attract-and-kill sites improve the male annihilation technique against Bactrocera dorsalis (Diptera: Tephritidae). PLoS One 2024; 19:e0300866. [PMID: 38512951 PMCID: PMC10956818 DOI: 10.1371/journal.pone.0300866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 03/06/2024] [Indexed: 03/23/2024] Open
Abstract
The Male Annihilation Technique (also termed the Male Attraction Technique; "MAT") is often used to eradicate pestiferous tephritid fruit flies, such as Bactrocera dorsalis (Hendel). MAT involves the application of male-specific attractants combined with an insecticide in spots or stations across an area to reduce the male population to such a low level that suppression or eradication is achieved. Currently, implementations of MAT in California and Florida targeting B. dorsalis utilize the male attractant methyl eugenol (ME) accompanied with a toxicant, such as spinosad, mixed into a waxy, inert emulsion STATIC ME (termed here "SPLAT-MAT-ME"). While highly effective against ME-responding species, such applications are expensive owing largely to the high cost of the carrier matrix and labor for application. Until recently the accepted protocol called for the application of approximately 230 SPLAT-MAT-ME spots per km2; however, findings from Hawaii suggest a lower density may be more effective. The present study adopted the methods of that earlier work and estimated kill rates of released B. dorsalis under varying spot densities in areas of California and Florida that have had recent incursions of this invasive species. Specifically, we directly compared trap captures of sterilized marked B. dorsalis males released in different plots under three experimental SPLAT-MAT-ME densities (50, 110, and 230 per km2) in Huntington Beach, CA; Anaheim, CA; and Sarasota-Bradenton, FL. The plots with a density of 110 sites per km2 had a significantly higher recapture proportion than plots with 50 or 230 sites per km2. This result suggests that large amounts of male attractant may reduce the ability of males to locate the source of the odor, thus lowering kill rates and the effectiveness of eradication efforts. Eradication programs would directly benefit from reduced costs and improved eradication effectiveness by reducing the application density of SPLAT-MAT-ME.
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Affiliation(s)
- Thomas Fezza
- United States Department of Agriculture, Animal Plant Health Inspection Service, Waimanalo, Hawaii, United States of America
- United States Department of Agriculture, Agricultural Research Service, Daniel K. Inouye US Pacific Basin Agricultural Research Center, Hilo, Hawaii, United States of America
| | - Todd E. Shelly
- United States Department of Agriculture, Animal Plant Health Inspection Service, Waimanalo, Hawaii, United States of America
| | - Abbie Fox
- United States Department of Agriculture, Animal Plant Health Inspection Service, Plant Protection and Quarantine, Palmetto, Florida, United States of America
| | - Kyle Beucke
- California Department of Food and Agriculture, Sacramento, California, United States of America
| | - Eric Rohrig
- Division of Plant Industry, Florida Department of Agriculture and Consumer Services, Gainesville, Florida, United States of America
| | - Charlotte Aldebron
- United States Department of Agriculture, Agricultural Research Service, Daniel K. Inouye US Pacific Basin Agricultural Research Center, Hilo, Hawaii, United States of America
| | - Nicholas C. Manoukis
- United States Department of Agriculture, Agricultural Research Service, Daniel K. Inouye US Pacific Basin Agricultural Research Center, Hilo, Hawaii, United States of America
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da Silva Santana G, Ronchi-Teles B, dos Santos CM, Souza PGC, Farnezi PKB, de Assis Paes VL, Soares MA, da Silva RS. Risk analysis for Anastrepha suspensa (Diptera: Tephritidae) and potential areas for its biological control with Diachasmimorpha longicaudata (Hymenoptera: Braconidae) in the Americas. Heliyon 2023; 9:e18701. [PMID: 37609418 PMCID: PMC10440466 DOI: 10.1016/j.heliyon.2023.e18701] [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: 11/08/2022] [Revised: 07/23/2023] [Accepted: 07/25/2023] [Indexed: 08/24/2023] Open
Abstract
The Caribbean fruit fly Anastrepha suspensa (Diptera: Tephritidae) is a polyphagous pest causing economic losses in Central America, the Caribbean and South Florida. The parasitoid wasp Diachasmimorpha longicaudata (Hymenoptera: Braconidae) is the main parasitoid of A. suspensa in biological control programs. In this study, by modeling with CLIMEX software, climatically suitable areas were projected according to historical climate data. Areas with overlapping optimal climatic suitability for the joint establishment of the pest and parasitoid were mapped, indicating large areas with host presence in North, Central, and South America, with cold stress being the main climatic factor limiting distribution for both species. Tropical regions have the most potential for invasion, with optimal suitability in many areas. Through the projected distributions, this study can target quarantine strategies in areas most susceptible to invasion and establishment of the pest in each country. In addition, classical biological control with the parasitoid in areas with climatic suitability is also recommended.
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Affiliation(s)
- Geovani da Silva Santana
- Instituto Nacional de Pesquisa da Amazônia, Av. André Araújo, 2936, Petrópolis, Manaus, AM, 69067-375, Brazil
| | - Beatriz Ronchi-Teles
- Instituto Nacional de Pesquisa da Amazônia, Av. André Araújo, 2936, Petrópolis, Manaus, AM, 69067-375, Brazil
| | - Cícero Manoel dos Santos
- Universidade Federal do Pará R. Cel. José Porfírio, 030 - Recreio, Altamira, PA, 68371-030, Brazil
| | - Philipe Guilherme Corcino Souza
- Universidade Federal dos Vales de Jequitinhonha e Mucuri. Rodovia MGT 367 – Km 583, nº 5000 - Alto da Jacuba, Diamantina, MG, 39100-000, Brazil
| | - Priscila Kelly Barroso Farnezi
- Universidade Federal dos Vales de Jequitinhonha e Mucuri. Rodovia MGT 367 – Km 583, nº 5000 - Alto da Jacuba, Diamantina, MG, 39100-000, Brazil
| | | | - Marcus Alvarenga Soares
- Universidade Federal dos Vales de Jequitinhonha e Mucuri. Rodovia MGT 367 – Km 583, nº 5000 - Alto da Jacuba, Diamantina, MG, 39100-000, Brazil
| | - Ricardo Siqueira da Silva
- Universidade Federal dos Vales de Jequitinhonha e Mucuri. Rodovia MGT 367 – Km 583, nº 5000 - Alto da Jacuba, Diamantina, MG, 39100-000, Brazil
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Deng J, Li J, Zhang X, Zeng L, Guo Y, Wang X, Chen Z, Zhou J, Huang X. Potential Global Invasion Risk of Scale Insect Pests Based on a Self-Organizing Map. INSECTS 2023; 14:572. [PMID: 37504579 PMCID: PMC10380675 DOI: 10.3390/insects14070572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/08/2023] [Accepted: 06/20/2023] [Indexed: 07/29/2023]
Abstract
In the present study, a global presence/absence dataset including 2486 scale insect species in 157 countries was extracted to assess the establishment risk of potential invasive species based on a self-organizing map (SOM). According to the similarities in species assemblages, a risk list of scale insects for each country was generated. Meanwhile, all countries in the dataset were divided into five clusters, each of which has high similarities of species assemblages. For those countries in the same neuron of the SOM output, they may pose the greatest threats to each other as the sources of potential invasive scale insect species, and therefore, require more attention from quarantine departments. In addition, normalized ζi values were used to measure the uncertainty of the SOM output. In total, 9 out of 63 neurons obtained high uncertainty with very low species counts, indicating that more investigation of scale insects should be undertaken in some parts of Africa, Asia and Northern Europe.
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Affiliation(s)
- Jun Deng
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Junjie Li
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xinrui Zhang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lingda Zeng
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yanqing Guo
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xu Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zijing Chen
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiali Zhou
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaolei Huang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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4
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Guillén L, Pascacio-Villafán C, Osorio-Paz I, Ortega-Casas R, Enciso-Ortíz E, Altúzar-Molina A, Velázquez O, Aluja M. Coping with global warming: Adult thermal thresholds in four pestiferous Anastrepha species determined under experimental laboratory conditions and development/survival times of immatures and adults under natural field conditions. Front Physiol 2022; 13:991923. [PMID: 36304579 PMCID: PMC9593313 DOI: 10.3389/fphys.2022.991923] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/20/2022] [Indexed: 12/02/2022] Open
Abstract
Climate change, particularly global warming, is disturbing biological processes in unexpected ways and forcing us to re-study/reanalyze the effects of varying temperatures, among them extreme ones, on insect functional traits such as lifespan and fecundity/fertility. Here we experimentally tested, under both laboratory and field conditions, the effects of an extreme range of temperatures (5, 10, 15, 20, 30, 40, and 45 °C, and the naturally varying conditions experienced in the field), on survivorship/lifespan, fecundity, and fertility of four pestiferous fruit fly species exhibiting contrasting life histories and belonging to two phylogenetic groups within the genus Anastrepha: A. ludens, A. obliqua, A. striata, and A. serpentina. In the field, we also measured the length of the entire life cycle (egg to adult), and in one species (A. ludens), the effect on the latter of the host plant (mango and grapefruit). Under laboratory conditions, none of the adults, independent of species, could survive a single day when exposed to a constant temperature of 45 °C, but A. striata and A. serpentina females/males survived at the highly contrasting temperatures of 5 and 40 °C at least 7 days. Maximum longevity was achieved in all species at 15 °C (375, 225, 175 and 160 days in A. ludens, A. serpentina, A. striata and A. obliqua females, respectively). Anastrepha ludens layed many eggs until late in life (368 days) at 15 °C, but none eclosed. Eclosion was only observed in all species at 20 and 30 °C. Under natural conditions, flies lived ca. 100 days less than in the laboratory at 15 °C, likely due to the physiological cost of dealing with the highly varying environmental patterns over 24 h (minimum and maximum temperatures and relative humidity of ca. 10–40 °C, and 22–100%, respectively). In the case of A. ludens, the immature’s developmental time was shorter in mango, but adult survival was longer than in grapefruit. We discuss our results considering the physiological processes regulating the traits measured and tie them to the increasing problem of global warming and its hidden effects on the physiology of insects, as well as the ecological and pest management implications.
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Affiliation(s)
| | | | | | | | | | | | | | - Martín Aluja
- *Correspondence: Larissa Guillén, ; Martín Aluja,
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5
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Amores GR, Zepeda-Ramos G, García-Fajardo LV, Hernández E, Guillén-Navarro K. The gut microbiome analysis of Anastrepha obliqua reveals inter-kingdom diversity: bacteria, fungi, and archaea. Arch Microbiol 2022; 204:579. [PMID: 36029340 DOI: 10.1007/s00203-022-03207-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 08/05/2022] [Accepted: 08/18/2022] [Indexed: 11/24/2022]
Abstract
The fruit fly Anastrepha obliqua is an economically important pest. The sterile insect technique to control it involves mass production and release of sterile flies to reduce the reproduction of the wild population. As noted in different Tephritidae, the performance of sterile males may be affected by the assimilation of nutrients under mass-rearing conditions. In the wild, the fly's life cycle suggests the acquisition of different organisms that could modulate its fitness and physiology. For A. obliqua, there is no information regarding microorganisms other than bacteria. This study analyzed bacteria, fungal, and archaea communities in the A. obliqua gut through denaturing gradient gel electrophoresis (DGGE) profiles of 16S (using a different set of primers for bacteria and archaea) and 18S ribosomal DNA markers. We found that wild flies presented higher microbial diversity related to fructose assimilation than laboratory species, suggesting that microorganisms have led to a specialized metabolism to process nutrients associated with an artificial diet. We identified species that have not been previously described in this fruit fly, especially actinobacteria and archaea, by employing different primer sets aimed at the same molecular marker but targeting diverse hypervariable regions of 16S rDNA. The possibility that Archaea affect fly fitness should not be ignored. This report on the intestinal microbial (bacteria, archaea, and fungi) composition of A. obliqua contributes to our understanding of the role of microorganisms in the development and physiology of the flies.
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Affiliation(s)
- G R Amores
- Laboratorio de Biotecnología Ambiental y Agroecológica, Grupo Académico de Biotecnología Ambiental, El Colegio de La Frontera Sur (ECOSUR), Tapachula, Chiapas, Mexico
| | - G Zepeda-Ramos
- Laboratorio de Biotecnología Ambiental y Agroecológica, Grupo Académico de Biotecnología Ambiental, El Colegio de La Frontera Sur (ECOSUR), Tapachula, Chiapas, Mexico
| | - L V García-Fajardo
- Laboratorio de Biotecnología Ambiental y Agroecológica, Grupo Académico de Biotecnología Ambiental, El Colegio de La Frontera Sur (ECOSUR), Tapachula, Chiapas, Mexico
| | - Emilio Hernández
- Programa Moscafrut DGSV-SENASICA-SAGARPA, Subdirección de Desarrollo de Métodos, Chiapas, Mexico
| | - K Guillén-Navarro
- Laboratorio de Biotecnología Ambiental y Agroecológica, Grupo Académico de Biotecnología Ambiental, El Colegio de La Frontera Sur (ECOSUR), Tapachula, Chiapas, Mexico.
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6
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Shadmany J, Lee SF, Nguyen TNM, Taylor PW. Patterns of sperm use by twice-mated female Queensland fruit flies. INSECT SCIENCE 2022; 29:1159-1169. [PMID: 34957684 DOI: 10.1111/1744-7917.12985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 11/04/2021] [Accepted: 11/24/2021] [Indexed: 06/14/2023]
Abstract
Multiple mating by females, polyandry, is common in insects, including in tephritid fruit flies. Female insects that remate commonly store sperm of multiple males. How the sperm of different males contribute to paternity is an important element of sexual selection. Sexual behavior and reproduction of the Queensland fruit fly (Qfly), Bactrocera tryoni, has been extensively investigated both in relation to understanding this economically important species' reproductive biology and in relation to implications for Sterile Insect Technique (SIT), whereby sterile flies are released to constrain reproduction of pest populations. Despite numerous studies of pre- and postcopulatory sexual selection in Qfly, there have been no direct studies of paternity patterns in polyandrous female Qflies. We used two morphologically distinguishable lines to investigate patterns of sperm use in Qfly. The two lines showed comparable mating performance evidenced by similar mating and remating frequency, copula duration, and proportion of second mate paternity (P2) between reciprocal crosses. The mechanism of sperm usage, with P2 close to 0.5 immediately after the second mating followed by gradual decrease of P2 as females aged, is most consistent with stratification or repositioning of sperm. Patterns observed in the present study are compared with the available information from other tephritid fruit flies, and are discussed in relation to this species' reproductive biology, known patterns of sperm storage, and SIT.
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Affiliation(s)
- Jason Shadmany
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
| | - Siu F Lee
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
- CSIRO Land and Water, Black Mountain, ACT, Australia
| | - Thu N M Nguyen
- School of BioSciences, University of Melbourne, Parkville, Victoria, Australia
| | - Phillip W Taylor
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
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7
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Duyck P, Jourdan H, Mille C. Sequential invasions by fruit flies (Diptera: Tephritidae) in Pacific and Indian Ocean islands: A systematic review. Ecol Evol 2022; 12:e8880. [PMID: 35509618 PMCID: PMC9055289 DOI: 10.1002/ece3.8880] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/28/2022] [Accepted: 04/14/2022] [Indexed: 11/07/2022] Open
Abstract
The aim of our review was to examine the cases of Tephritidae invasions across island systems in order to determine whether they follow a hierarchical mode of invasion. We reviewed the literature on factors and mechanisms driving invasion sequences in Pacific and Southwest Indian Ocean islands and gathered every record of invasion by a polyphagous tephritid in island groups. From invasion date or period, we defined an invasion link when a new fruit fly established on an island where another polyphagous tephritid is already resident (that was indigenous or a previous invader). Across surveyed islands, we documented 67 invasion links, involving 24 tephritid species. All invasion links were directional, i.e., they involved a series of invasions by invaders that were closely related to a resident species but were increasingly more competitive. These sequential establishments of species are driven by interspecific competition between resident and exotic species but are also influenced by history, routes, and flows of commercial exchanges and the bridgehead effect. This information should be used to improve biosecurity measures. Interactions between trade flow, invasive routes, and the presence of invasive and resident species should be integrated into large‐scale studies.
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Affiliation(s)
| | - Hervé Jourdan
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE Noumea New Caledonia
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Pascacio‐Villafán C, Righini N, Nestel D, Birke A, Guillén L, Aluja M. Diet Quality and Conspecific Larval Density Predict Functional Trait Variation and Performance in a Polyphagous Frugivorous Fly. Funct Ecol 2022. [DOI: 10.1111/1365-2435.14042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Carlos Pascacio‐Villafán
- Instituto de Ecología, A.C. (INECOL), Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores 91073 Xalapa Veracruz Mexico
| | - Nicoletta Righini
- Instituto de Ecología, A.C. (INECOL), Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores 91073 Xalapa Veracruz Mexico
- Instituto de Investigaciones en Comportamiento Alimentario y Nutrición (IICAN), Universidad de Guadalajara 49000 Ciudad Guzmán Jalisco Mexico
| | - David Nestel
- Institute of Plant Protection, Department of Entomology, ARO, The Volcani Center, Beit Dagan 50250 Israel
| | - Andrea Birke
- Instituto de Ecología, A.C. (INECOL), Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores 91073 Xalapa Veracruz Mexico
| | - Larissa Guillén
- Instituto de Ecología, A.C. (INECOL), Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores 91073 Xalapa Veracruz Mexico
| | - Martín Aluja
- Instituto de Ecología, A.C. (INECOL), Clúster Científico y Tecnológico BioMimic®, Red de Manejo Biorracional de Plagas y Vectores 91073 Xalapa Veracruz Mexico
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Salgueiro J, Nussenbaum AL, Milla FH, Asimakis E, Goane L, Ruiz MJ, Bachmann GE, Vera MT, Stathopoulou P, Bourtzis K, Deutscher AT, Lanzavecchia SB, Tsiamis G, Segura DF. Analysis of the Gut Bacterial Community of Wild Larvae of Anastrepha fraterculus sp. 1: Effect of Host Fruit, Environment, and Prominent Stable Associations of the Genera Wolbachia, Tatumella, and Enterobacter. Front Microbiol 2022; 13:822990. [PMID: 35359740 PMCID: PMC8960962 DOI: 10.3389/fmicb.2022.822990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 01/24/2022] [Indexed: 11/13/2022] Open
Abstract
The genus Anastrepha (Diptera Tephritidae) includes some of the most important fruit fly pests in the Americas. Here, we studied the gut bacterial community of 3rd instar larvae of Anastrepha fraterculus sp. 1 through Next Generation Sequencing (lllumina) of the V3-V4 hypervariable region within the 16S rRNA gene. Gut bacterial communities were compared between host species (guava and peach), and geographical origins (Concordia and Horco Molle in Argentina) representing distinct ecological scenarios. In addition, we explored the effect of spatial scale by comparing the samples collected from different trees within each geographic origin and host species. We also addressed the effect of fruit size on bacterial diversity. The gut bacterial community was affected both by host species and geographic origin. At smaller spatial scales, the gut bacterial profile differed among trees of the same species and location at least in one host-location combination. There was no effect of fruit size on the larval gut bacteriome. Operational Taxonomic Units (OTUs) assigned to Wolbachia, Tatumella and Enterobacter were identified in all samples examined, which suggest potential, non-transient symbioses. Better knowledge on the larval gut bacteriome contributes valuable information to develop sustainable control strategies against A. fraterculus targeting key symbionts as the Achilles' heel to control this important fruit fly pest.
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Affiliation(s)
- Julieta Salgueiro
- Instituto de Genética “Ewald A. Favret” (INTA) – GV IABIMO (CONICET), Hurlingham, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - A. Laura Nussenbaum
- Instituto de Genética “Ewald A. Favret” (INTA) – GV IABIMO (CONICET), Hurlingham, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Fabián H. Milla
- Instituto de Genética “Ewald A. Favret” (INTA) – GV IABIMO (CONICET), Hurlingham, Argentina
| | - Elias Asimakis
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, Agrinio, Greece
| | - Lucía Goane
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Facultad de Agronomía y Zootecnia, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
| | - M. Josefina Ruiz
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Facultad de Agronomía y Zootecnia, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
| | - Guillermo E. Bachmann
- Instituto de Genética “Ewald A. Favret” (INTA) – GV IABIMO (CONICET), Hurlingham, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - María T. Vera
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Facultad de Agronomía y Zootecnia, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
| | - Panagiota Stathopoulou
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, Agrinio, Greece
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Center of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Ania T. Deutscher
- Biosecurity and Food Safety, NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute (EMAI), Menangle, NSW, Australia
| | - Silvia B. Lanzavecchia
- Instituto de Genética “Ewald A. Favret” (INTA) – GV IABIMO (CONICET), Hurlingham, Argentina
| | - George Tsiamis
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, Agrinio, Greece
| | - Diego F. Segura
- Instituto de Genética “Ewald A. Favret” (INTA) – GV IABIMO (CONICET), Hurlingham, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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10
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Ravigné V, Becker N, Massol F, Guichoux E, Boury C, Mahé F, Facon B. Fruit fly phylogeny imprints bacterial gut microbiota. Evol Appl 2022; 15:1621-1638. [PMID: 36330298 PMCID: PMC9624087 DOI: 10.1111/eva.13352] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 01/20/2022] [Accepted: 01/24/2022] [Indexed: 11/30/2022] Open
Abstract
One promising avenue for reconciling the goals of crop production and ecosystem preservation consists in the manipulation of beneficial biotic interactions, such as between insects and microbes. Insect gut microbiota can affect host fitness by contributing to development, host immunity, nutrition, or behavior. However, the determinants of gut microbiota composition and structure, including host phylogeny and host ecology, remain poorly known. Here, we used a well‐studied community of eight sympatric fruit fly species to test the contributions of fly phylogeny, fly specialization, and fly sampling environment on the composition and structure of bacterial gut microbiota. Comprising both specialists and generalists, these species belong to five genera from to two tribes of the Tephritidae family. For each fly species, one field and one laboratory samples were studied. Bacterial inventories to the genus level were produced using 16S metabarcoding with the Oxford Nanopore Technology. Sample bacterial compositions were analyzed with recent network‐based clustering techniques. Whereas gut microbiota were dominated by the Enterobacteriaceae family in all samples, microbial profiles varied across samples, mainly in relation to fly identity and sampling environment. Alpha diversity varied across samples and was higher in the Dacinae tribe than in the Ceratitinae tribe. Network analyses allowed grouping samples according to their microbial profiles. The resulting groups were very congruent with fly phylogeny, with a significant modulation of sampling environment, and with a very low impact of fly specialization. Such a strong imprint of host phylogeny in sympatric fly species, some of which share much of their host plants, suggests important control of fruit flies on their gut microbiota through vertical transmission and/or intense filtering of environmental bacteria.
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Affiliation(s)
| | | | - François Massol
- Univ. Lille CNRS Inserm CHU Lille Institut Pasteur de Lille U1019 ‐ UMR 9017 ‐ CIIL ‐ Center for Infection and Immunity of Lille F‐59000 Lille France
| | | | | | - Frédéric Mahé
- PHIM Plant Health Institute Univ Montpellier CIRAD, INRAE Institut Agro IRD Montpellier France
| | - Benoit Facon
- INRAE UMR CBGP Campus International de Baillarguet F‐349988 Montferrier/Lez France
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11
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Choo A, Fung E, Nguyen TNM, Okada A, Crisp P. CRISPR/Cas9 Mutagenesis to Generate Novel Traits in Bactrocera tryoni for Sterile Insect Technique. Methods Mol Biol 2022; 2495:151-171. [PMID: 35696033 DOI: 10.1007/978-1-0716-2301-5_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Sterile Insect Technique (SIT) is a biocontrol strategy that has been widely utilized to suppress or eradicate outbreak populations of insect pests such as tephritid fruit flies. As SIT is highly favored due to it being species-specific and environmentally friendly, there are constant efforts to improve the efficiency and efficacy of this method in particular at low pest densities; one of which is the use of genetically enhanced strains. Development of these desirable strains has been facilitated by the emergence of the CRISPR/Cas genome-editing technology that enables the rapid and precise genomic modification of non-model organisms. Here, we describe the manual microinjection of CRISPR/Cas9 reagents into tephritid pest Bactrocera tryoni (Queensland fruit fly) embryos to introduce ideal traits as well as the molecular methods used to detect successful mutagenesis.
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Affiliation(s)
- Amanda Choo
- School of Biological Sciences, University of Adelaide, Adelaide, SA, Australia.
| | - Elisabeth Fung
- South Australian Research and Development Institute, Adelaide, SA, Australia
| | - Thu N M Nguyen
- University of Melbourne, Bio21 Institute, School of BioSciences, Melbourne, VIC, Australia
| | - Anzu Okada
- School of Biological Sciences, University of Adelaide, Adelaide, SA, Australia
| | - Peter Crisp
- South Australian Research and Development Institute, Adelaide, SA, Australia
- School of Agricultural, Food and Wine, University of Adelaide, Adelaide, SA, Australia
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12
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Including climate change to predict the global suitable area of an invasive pest: Bactrocera correcta (Diptera: Tephritidae). Glob Ecol Conserv 2022. [DOI: 10.1016/j.gecco.2022.e02021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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13
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Souza AV, Miranda EA, Passos JF, Araujo EL, Alvarenga CD, Silva JG. Predicting the Invasion Risk by Anastrepha sororcula (Diptera: Tephritidae) in Distinct Geographic Regions. NEOTROPICAL ENTOMOLOGY 2021; 50:989-998. [PMID: 34410677 DOI: 10.1007/s13744-021-00907-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
The movement of endemic fruit flies to new habitats represents a major biological and economic threat. Anastrepha sororcula Zucchi, 1979 is widely distributed in Brazil and also in Colombia, Ecuador, and Paraguay. Here, we present the potential distribution of A. sororcula in endemic areas and project this model into other regions such as part of sub-Saharan Africa, Central America, and Asia to show areas around the world that this species can potentially establish. We combined geographic coordinates with climate data. The models were built using the maximum entropy (MaxEnt) algorithm. Many mango- and guava-producing countries exhibited climatic suitability for A. sororcula in the regions studied including the nine largest world producers: India, Brazil, Malawi, Kenya, Haiti, Cuba, Colombia, Madagascar, and the Democratic Republic of the Congo. Many of these countries showed ideal host plant availability and climatic conditions for the entry and establishment of A. sororcula. This study is a pioneer in the identification of representative areas in the world with climatic suitability for A. sororcula, which shows the importance of predicting areas at risk of invasion to monitor the movement and establishment of fruit fly species in new regions, which is fundamental to area-wide integrated pest management programs.
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Affiliation(s)
- Adriane Vieira Souza
- Programa de Pós-Graduação em Genética e Biologia Molecular, Depto de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil.
| | - Elder Assis Miranda
- Programa de Pós-Graduação em Genética e Biologia Molecular, Depto de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
- Instituto Federal do Tocantins - IFTO - Porto Nacional, Tocantins, Brazil
| | - Joseane Fernanda Passos
- Programa de Pós-Graduação em Genética e Biologia Molecular, Depto de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
| | - Elton Lucio Araujo
- Depto de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido, Mossoró, Rio Grande do Norte, Brazil
| | | | - Janisete Gomes Silva
- Programa de Pós-Graduação em Genética e Biologia Molecular, Depto de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
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14
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Qin Y, Zhang Y, Clarke AR, Zhao Z, Li Z. Including Host Availability and Climate Change Impacts on the Global Risk Area of Carpomya pardalina (Diptera: Tephritidae). Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.724441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Fruit flies are a well-known invasive species, and climate-based risk modeling is used to inform risk analysis of these pests. However, such research tends to focus on already well-known invasive species. This paper illustrates that appropriate risk modeling can also provide valuable insights for flies which are not yet “on the radar.” Carpomya pardalina is a locally important cucurbit-infesting fruit fly of western and central Asia, but it may present a risk to other temperate countries where melons are grown. MaxEnt models were used to map the risk area for this species under historical and future climate conditions averaged from three global climate models under two shared socio-economic pathways in 2030 and 2070 from higher climate sensitivity models based on the upcoming 2021 IPCC sixth assessment report. The results showed that a total of 47.64% of the world’s land mass is climatically suitable for the fly; it could establish widely around the globe both under current and future climates with host availability. Our MaxEnt modeling highlights particularly that Western China, Russia, and other European countries should pay attention to this currently lesser-known melon fly and the melons exported from the present countries. The current and expanding melon trade could offer direct invasion pathways to those regions. While this study offers specific risk information on C. pardalina, it also illustrates the value of applying climate-based distribution modeling to species with limited geographic distributions.
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15
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Roohigohar S, Clarke AR, Prentis PJ. Gene selection for studying frugivore-plant interactions: a review and an example using Queensland fruit fly in tomato. PeerJ 2021; 9:e11762. [PMID: 34434644 PMCID: PMC8359797 DOI: 10.7717/peerj.11762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 06/21/2021] [Indexed: 12/17/2022] Open
Abstract
Fruit production is negatively affected by a wide range of frugivorous insects, among them tephritid fruit flies are one of the most important. As a replacement for pesticide-based controls, enhancing natural fruit resistance through biotechnology approaches is a poorly researched but promising alternative. The use of quantitative reverse transcription PCR (RT-qPCR) is an approach to studying gene expression which has been widely used in studying plant resistance to pathogens and non-frugivorous insect herbivores, and offers a starting point for fruit fly studies. In this paper, we develop a gene selection pipe-line for known induced-defense genes in tomato fruit, Solanum lycopersicum, and putative detoxification genes in Queensland fruit fly, Bactrocera tryoni, as a basis for future RT-qPCR research. The pipeline started with a literature review on plant/herbivore and plant/pathogen molecular interactions. With respect to the fly, this was then followed by the identification of gene families known to be associated with insect resistance to toxins, and then individual genes through reference to annotated B. tryoni transcriptomes and gene identity matching with related species. In contrast for tomato, a much better studied species, individual defense genes could be identified directly through literature research. For B. tryoni, gene selection was then further refined through gene expression studies. Ultimately 28 putative detoxification genes from cytochrome P450 (P450), carboxylesterase (CarE), glutathione S-transferases (GST), and ATP binding cassette transporters (ABC) gene families were identified for B. tryoni, and 15 induced defense genes from receptor-like kinase (RLK), D-mannose/L-galactose, mitogen-activated protein kinase (MAPK), lipoxygenase (LOX), gamma-aminobutyric acid (GABA) pathways and polyphenol oxidase (PPO), proteinase inhibitors (PI) and resistance (R) gene families were identified from tomato fruit. The developed gene selection process for B. tryoni can be applied to other herbivorous and frugivorous insect pests so long as the minimum necessary genomic information, an annotated transcriptome, is available.
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Affiliation(s)
- Shirin Roohigohar
- School of Biology and Environmental Science, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Anthony R Clarke
- School of Biology and Environmental Science, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Peter J Prentis
- School of Biology and Environmental Science, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
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16
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Ahmed DA, Benhamou S, Bonsall MB, Petrovskii SV. Three-dimensional random walk models of individual animal movement and their application to trap counts modelling. J Theor Biol 2021; 524:110728. [PMID: 33895179 DOI: 10.1016/j.jtbi.2021.110728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 04/11/2021] [Accepted: 04/15/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Random walks (RWs) have proved to be a powerful modelling tool in ecology, particularly in the study of animal movement. An application of RW concerns trapping which is the predominant sampling method to date in insect ecology and agricultural pest management. A lot of research effort has been directed towards modelling ground-dwelling insects by simulating their movement in 2D, and computing pitfall trap counts, but comparatively very little for flying insects with 3D elevated traps. METHODS We introduce the mathematics behind 3D RWs and present key metrics such as the mean squared displacement (MSD) and path sinuosity, which are already well known in 2D. We develop the mathematical theory behind the 3D correlated random walk (CRW) which involves short-term directional persistence and the 3D Biased random walk (BRW) which introduces a long-term directional bias in the movement so that there is an overall preferred movement direction. In this study, we focus on the geometrical aspects of the 3D trap and thus consider three types of shape; a spheroidal trap, a cylindrical trap and a rectangular cuboidal trap. By simulating movement in 3D space, we investigated the effect of 3D trap shapes and sizes and of movement diffusion on trapping efficiency. RESULTS We found that there is a non-linear dependence of trap counts on the trap surface area or volume, but the effect of volume appeared to be a simple consequence of changes in area. Nevertheless, there is a slight but clear hierarchy of trap shapes in terms of capture efficiency, with the spheroidal trap retaining more counts than a cylinder, followed by the cuboidal type for a given area. We also showed that there is no effect of short-term persistence when diffusion is kept constant, but trap counts significantly decrease with increasing diffusion. CONCLUSION Our results provide a better understanding of the interplay between the movement pattern, trap geometry and impacts on trapping efficiency, which leads to improved trap count interpretations, and more broadly, has implications for spatial ecology and population dynamics.
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Affiliation(s)
- D A Ahmed
- Center for Applied Mathematics and Bioinformatics (CAMB), Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, P.O. Box 7207, Hawally 32093, Kuwait
| | - S Benhamou
- Centre d'Ecologie Fonctionnelle et Evolutive, CNRS, Cogitamus Lab, Montpellier, France
| | - M B Bonsall
- Mathematical Ecology Research Group, Department of Zoology, University of Oxford, Mansfield Road, OX1 3SZ Oxford, UK
| | - S V Petrovskii
- School of Mathematics and Actuarial Science, University of Leicester, University Road, Leicester LE1 7RH, UK; Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow 117198, Russian Federation
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17
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Electrophysiological Responses of the Mediterranean Fruit Fly, Ceratitis capitata, to the Cera Trap® Lure: Exploring Released Antennally-Active Compounds. J Chem Ecol 2021; 47:265-279. [PMID: 33656626 DOI: 10.1007/s10886-021-01254-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/28/2021] [Accepted: 02/03/2021] [Indexed: 10/22/2022]
Abstract
The Mediterranean fruit fly (medfly), Ceratitis capitata, is a worldwide pest of agriculture able to use olfactory cues to locate habitat, food sources, mates and oviposition sites. The sensitivity of medfly olfaction has been exploited to develop olfactory-based attractants that are currently important tools for detection, control and eradication of its populations. Among these is Cera Trap® (BIOIBERICA, S.A.U.), a cost-effective bait. Here we used coupled gas chromatography/electroantennographic detection (GC-EAD) and GC/mass spectrometry (GC-MS) approaches to characterize the medfly antennally-active compounds released by this lure. We identified GC peaks corresponding to chemicals belonging to six different classes including heterocyclic aromatic compounds, aliphatic alcohols, aldehydes, esters, sesquiterpene hydrocarbons, and aromatic alcohols. We tested ten potential candidate volatiles belonging to these classes and predicted to be emitted by the lure and found that they were eliciting electroantennographic responses in medfly adults. These results will help in unravelling the physiological mechanisms of odor perception in both sexes, especially in relation to Cera Trap® attractant activity, which in the field has been shown to be female-specific. These findings and their developments will ultimately expand the toolbox for medfly control in the field.
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18
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Biswas MJH, Mainali B, Park SJ, Taylor P, Rempoulakis P. Electrophysiological Responses to Cuelure of Raspberry Ketone-Fed Queensland Fruit Flies. JOURNAL OF ECONOMIC ENTOMOLOGY 2020; 113:2832-2839. [PMID: 33111947 DOI: 10.1093/jee/toaa242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Indexed: 06/11/2023]
Abstract
The sterile insect technique (SIT) and male annihilation technique (MAT) are important tools for the control of Queensland fruit fly (Q-fly), Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), a major insect pest of horticultural crops in Australia. In MAT, mature Q-fly males are attracted to a toxic bait using Cuelure, a synthetic analog of raspberry ketone (RK). Substantial improvements in control could be achieved by simultaneous use of SIT and MAT, but this requires suppression of the Cuelure response in released sterile flies. Recent studies report that prerelease feeding with RK during the first 48 h after emergence can reduce the response of mature Q-fly males to Cuelure, but the mechanism underpinning this is unknown. Here, to test whether reduced sensory sensitivity to Cuelure is involved, we evaluated the effects of RK supplements, adult diet (yeast-supplemented diet throughout adult stage vs yeast-supplemented diet only for 48 h), and age on electroantennogram (EAG) and electropalpogram (EPG) responses of Q-flies to Cuelure stimuli. EAG responses did not vary with RK supplements, sex, or age of Q-flies fed yeast-supplemented diet throughout the adult stage, but the responses of Q-flies fed other diet regime decreased with age. EPG responses of both sexes of Q-flies were affected by RK supplements, age, and their interaction, but without patterns that might indicate reduced maxillary palp response of RK supplemented flies to Cuelure. Our findings do not support the hypothesis that reduced Cuelure response of male Q-flies fed RK supplements is explained by reduced electrophysiological response in antennae or maxillary palps.
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Affiliation(s)
| | - Bishwo Mainali
- Applied BioSciences, Macquarie University, Sydney, NSW, Australia
| | - Soo Jean Park
- Applied BioSciences, Macquarie University, Sydney, NSW, Australia
| | - Phillip Taylor
- Applied BioSciences, Macquarie University, Sydney, NSW, Australia
| | - Polychronis Rempoulakis
- Applied BioSciences, Macquarie University, Sydney, NSW, Australia
- New South Wales Department of Primary Industries, Ourimbah, NSW, Australia
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19
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Usman M, Gulzar S, Wakil W, Wu S, Piñero JC, Leskey TC, Nixon LJ, Oliveira-Hofman C, Toews MD, Shapiro-Ilan D. Virulence of Entomopathogenic Fungi to Rhagoletis pomonella (Diptera: Tephritidae) and Interactions With Entomopathogenic Nematodes. JOURNAL OF ECONOMIC ENTOMOLOGY 2020; 113:2627-2633. [PMID: 32978627 DOI: 10.1093/jee/toaa209] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Indexed: 05/27/2023]
Abstract
The objectives of this study were to quantify the virulence of four entomopathogenic fungal species to pupae of Rhagoletis pomonella (Walsh) (Diptera: Tephritidae) and to determine the potential to combine entomopathogenic fungi (EPFs) and entomopathogenic nematodes (EPNs) for biological control of this pest. The four species of EPFs included Beauveria bassiana (strain GHA), Metarhizium brunneum (strain F52), Isaria javanica (wf GA17), and Isaria fumosorosea (Apopka 97 strain). In laboratory assays, all fungi reduced adult emergence but there were no differences between fungal species. Isaria javanica and M. brunneum were examined further in a EPFs and EPNs bioassay that also included the EPNs Steinernema carpocapsae (ALL strain) and S. riobrave (355 strain). All nematodes and fungi were applied either alone or in combination (fungus + nematode). There were no differences between species within the same entomopathogen group (fungi and nematodes). However, the treatment with S. riobrave resulted in lower R. pomonella emergence than either fungal species. The combination of S. riobrave and I. javanica resulted in the lowest R. pomonella emergence (3%) at fourth-week interval, which was significantly lower than any of the single-agent applications, yet virulence of the other three combination treatments was not different from their respective nematode treatments applied alone. Additive interactions were detected for all fungus-nematode combinations. This study suggests that application of entomopathogenic nematodes and fungi could be an effective option to suppress R. pomonella populations.
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Affiliation(s)
- Muhammad Usman
- Department of Entomology, University of Agriculture Faisalabad, Punjab, Pakistan
| | - Sehrish Gulzar
- Department of Entomology, University of Agriculture Faisalabad, Punjab, Pakistan
| | - Waqas Wakil
- Department of Entomology, University of Agriculture Faisalabad, Punjab, Pakistan
| | - Shaohui Wu
- Department of Entomology, University of Georgia, Tifton, GA, USA
| | - Jaime C Piñero
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, USA
| | | | | | | | - Michael D Toews
- Department of Entomology, University of Georgia, Tifton, GA, USA
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20
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The transformer-2 and fruitless characterisation with developmental expression profiles of sex-determining genes in Bactrocera dorsalis and B. correcta. Sci Rep 2020; 10:17938. [PMID: 33087807 PMCID: PMC7578103 DOI: 10.1038/s41598-020-74856-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 10/07/2020] [Indexed: 12/12/2022] Open
Abstract
Sex determination in tephritid fruit flies involves a signaling cascade of alternatively spliced genes. The Transformer (TRA) and Transformer-2 (TRA-2) complex establishes an autoregulatory loop switching sex-specific splicing of tra pre-mRNA in females. The TRA/TRA-2 complex also regulates the sex-specific splicing of downstream effector genes, doublesex (dsx) and fruitless (fru). In Ceratitis capitata, a Maleness-on the-Y (MoY) gene modulates sex-specifically spliced Cctra pre-mRNA and results in the breakdown of the Cctra autoregulatory loop in males. In this study, the tra-2 and fru genes were characterised in two key pests, Bactrocera dorsalis and B. correcta. The tra-2 genes showed high degrees of conservation among tephritids. The complex gene organisation for each of Bdfru and Bcfru were identified. There are sex-specific and non sex-specific transcripts generated by alternative promoters as found in Drosophila melanogaster and other insects. RNAi knockdown of Bdtra transcripts showed that BdTRA controls the sex-specific splicing of Bddsx and Bdfru pre-mRNAs. Developmental expression analysis shows that multiple splice variants of Bdtra and Bctra RNAs are present before and during cellular blastoderm formation and that the mature sex-specific variants become fixed later in embryogenesis. Furthermore, the BddsxM splice variants are found in early embryos at the beginning of gastulation, but BdfruM does not appear until the larval stage. We proposed that the zygotic tra loop is initiated in both female and male embryos before becoming automatised or abolished by MoY, respectively.
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21
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Caffeine as a promotor of sexual development in sterile Queensland fruit fly males. Sci Rep 2020; 10:14743. [PMID: 32901078 PMCID: PMC7479100 DOI: 10.1038/s41598-020-71671-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 07/08/2020] [Indexed: 12/03/2022] Open
Abstract
Sterile insect technique (SIT) is an environmentally benign pest management technique that involves releasing millions of sterile insects to suppress reproduction of pest populations. Many fruit flies, including Queensland fruit fly (Bactrocera tryoni Froggatt, ‘Q-fly’), have long adult maturation periods such that pre-maturation mortality can greatly reduce abundance of sexually active sterile males and impede SIT efficacy. Q-fly is the most difficult and costly challenge to market access for Australia’s horticulture industries, and has been targeted for intensive use of SIT program. We here demonstrate potential of pre-release caffeine supplements as a novel means to accelerate sexual maturation in male Q-fly. In mating trials, analytical caffeine was very effective at accelerating sexual maturation, while no positive effects of caffeine-containing instant coffee or guarana supplements were detected. In parallel, development of testes and ejaculatory apodemes was accelerated in males provided analytical caffeine but not instant coffee or guarana. High doses of guarana and instant coffee reduced longevity while even the highest doses of analytical caffeine did not affect longevity. Pre-release caffeine supplements promote sexual maturation in Q-flies, and similar benefits are expected in other fruit flies having long adult maturation periods.
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22
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De Cock M, Virgilio M, Vandamme P, Bourtzis K, De Meyer M, Willems A. Comparative Microbiomics of Tephritid Frugivorous Pests (Diptera: Tephritidae) From the Field: A Tale of High Variability Across and Within Species. Front Microbiol 2020; 11:1890. [PMID: 32849469 PMCID: PMC7431611 DOI: 10.3389/fmicb.2020.01890] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 07/20/2020] [Indexed: 01/04/2023] Open
Abstract
The family Tephritidae includes some of the most notorious insect pests of agricultural and horticultural crops in tropical and sub-tropical regions. Despite the interest in the study of their gut microbiome, our present knowledge is largely based on the analysis of laboratory strains. In this study, we present a first comparative analysis of the gut microbiome profiles of field populations of ten African and Mediterranean tephritid pests. For each species, third instar larvae were sampled from different locations and host fruits and compared using 16S rRNA amplicon sequencing and a multi-factorial sampling design. We observed considerable variation in gut microbiome diversity and composition both between and within fruit fly species. A “core” microbiome, shared across all targeted species, could only be identified at most at family level (Enterobacteriaceae). At genus level only a few bacterial genera (Klebsiella, Enterobacter, and Bacillus) were present in most, but not all, samples, with high variability in their relative abundance. Higher relative abundances were found for seven bacterial genera in five of the fruit fly species considered. These were Erwinia in Bactrocera oleae, Lactococcus in B. zonata, Providencia in Ceratitis flexuosa, Klebsiella, and Rahnella in C. podocarpi and Acetobacter and Serratia in C. rosa. With the possible exception of C. capitata and B. dorsalis (the two most polyphagous species considered) we could not detect obvious relationships between fruit fly dietary breadth and microbiome diversity or abundance patterns. Similarly, our results did not suggest straightforward differences between the microbiome profiles of species belonging to Ceratitis and the closely related Bactrocera/Zeugodacus. These results provide a first comparative analysis of the gut microbiomes of field populations of multiple economically relevant tephritids and provide base line information for future studies that will further investigate the possible functional role of the observed associations.
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Affiliation(s)
- Maarten De Cock
- Royal Museum for Central Africa, Tervuren, Belgium.,Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | | | - Peter Vandamme
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint Food and Agriculture Organization of the UnitedNations/International Atomic Energy Agency (FAO/IAEA) Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | | | - Anne Willems
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
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The evolutionary history of mariner elements in stalk-eyed flies reveals the horizontal transfer of transposons from insects into the genome of the cnidarian Hydra vulgaris. PLoS One 2020; 15:e0235984. [PMID: 32658920 PMCID: PMC7357744 DOI: 10.1371/journal.pone.0235984] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 06/25/2020] [Indexed: 11/19/2022] Open
Abstract
The stalk-eyed flies (Diopsidae, Diptera) are a family of approximately 100 species of calypterate dipterans, characterised by extended head capsules. Species within the family have previously been shown to possess six subfamilies of mariner transposons, with nucleotide substitution patterns suggesting that at least two subfamilies are currently active. The vertumnana subfamily has been shown to have been involved in a horizontal transfer event involving Diopsidae and a second dipteran family in the Tephritidae. Presented here are cloned and sequenced mariner elements from three further diopsid species, in addition to a bioinformatic analysis of mariner elements identified in transcriptomic and genomic data from the genus Teleopsis. The newly identified mariner elements predominantly fall into previously recognised subfamilies, however the publicly available Teleopsis data also revealed a novel subfamily. Three of the seven identified subfamilies are shown to have undergone horizontal transfer, two of which appear to involve diopsid donor species. One recipient group of a diopsid mariner is the Bactrocera genus of tephritid flies, the transfer of which was previously proposed in an earlier study of diopsid mariner elements. The second horizontal transfer, of the mauritiana subfamily, can be traced from the Teleopsis genus to the cnidarian Hydra vulgaris. The mauritiana elements are shown to be active in the recipient H. vulgaris and transposase expression is observed in all body tissues examined in both species. The increased diversity of diopsid mariner elements points to a minimum of four subfamilies being present in the ancestral genome. Both vertical inheritance and stochastic loss of TEs have subsequently occurred within the diopsid radiation. The TE complement of H. vulgaris contains at least two mariner subfamilies of insect origin. Despite the phylogenetic distance between donor and recipient species, both subfamilies are shown to be active and proliferating within H. vulgaris.
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Santos RPD, Silva JG, Miranda EA. The Past and Current Potential Distribution of the Fruit Fly Anastrepha obliqua (Diptera: Tephritidae) in South America. NEOTROPICAL ENTOMOLOGY 2020; 49:284-291. [PMID: 31802413 DOI: 10.1007/s13744-019-00741-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
Anastrepha obliqua (Macquart) is an agricultural pest of wide geographic distribution infesting a vast list of host species in America. However, little is known about the past geographic distribution of this species. In this study, we investigated the potential past and current distribution of species in South America. In this sense, the MaxEnt algorithm was used to model the ecological niche of the species in the past (Last Interglcial Maximum; Last Glacial Maximum) and current periods. The results suggested that under the current climatic conditions, A. obliqua showed high environmental suitability to become established in most South American countries, especially in Brazil. The lowest suitability indices were observed in Chile, Argentina, and Uruguay. The past analysis for Last Glacial Maximum revealed that there was no significant change in the distribution potential of the species when compared to the current model; however, in the Last Interglacial Maximum period, there was a large reduction in the areas of suitability for the species when compared to the current and Last Glacial Maximum distribution models. The analysis also revealed vast areas of refuges for the species mainly on the coast of Brazil, as well as Venezuela, Bolivia, Guyana, and Surinam. The results presented here may be useful for future phylogeographical studies in order to test if the refuge areas concentrate greater genetic diversity for this species. In addition, our study provides important information for understanding the current dynamics of A. obliqua, which may be useful for control programs in places where this species can become a pest.
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Affiliation(s)
- R P D Santos
- Programa de Pós-Graduação em Genética e Biologia Molecular - PPGGBM, Depto de Ciências Biológicas - DCB, Univ Estadual de Santa Cruz - UESC, Rodovia Ilhéus - Itabuna km 16, Ilhéus, Bahia, 45650-000, Brasil
| | - J G Silva
- Programa de Pós-Graduação em Genética e Biologia Molecular - PPGGBM, Depto de Ciências Biológicas - DCB, Univ Estadual de Santa Cruz - UESC, Rodovia Ilhéus - Itabuna km 16, Ilhéus, Bahia, 45650-000, Brasil
| | - E A Miranda
- Programa de Pós-Graduação em Genética e Biologia Molecular - PPGGBM, Depto de Ciências Biológicas - DCB, Univ Estadual de Santa Cruz - UESC, Rodovia Ilhéus - Itabuna km 16, Ilhéus, Bahia, 45650-000, Brasil.
- Núcleo de Pesquisa da Conservação e Biodiversidade do Semiárido - CONBIOS, Observatorio UNIFG do Semiárido Nordestino, Centro Universitário UniFG, Guanambi, BA, Brasil.
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25
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Noman MS, Liu L, Bai Z, Li Z. Tephritidae bacterial symbionts: potentials for pest management. BULLETIN OF ENTOMOLOGICAL RESEARCH 2020; 110:1-14. [PMID: 31223102 DOI: 10.1017/s0007485319000403] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Tephritidae is a large family that includes several fruit and vegetable pests. These organisms usually harbor a variegated bacterial community in their digestive systems. Symbiotic associations of bacteria and fruit flies have been well-studied in the genera Anastrepha, Bactrocera, Ceratitis, and Rhagoletis. Molecular and culture-based techniques indicate that many genera of the Enterobacteriaceae family, especially the genera of Klebsiella, Enterobacter, Pectobacterium, Citrobacter, Erwinia, and Providencia constitute the most prevalent populations in the gut of fruit flies. The function of symbiotic bacteria provides a promising strategy for the biological control of insect pests. Gut bacteria can be used for controlling fruit fly through many ways, including attracting as odors, enhancing the success of sterile insect technique, declining the pesticide resistance, mass rearing of parasitoids and so on. New technology and recent research improved our knowledge of the gut bacteria diversity and function, which increased their potential for pest management. In this review, we discussed the diversity of bacteria in the economically important fruit fly and the use of these bacteria for controlling fruit fly populations. All the information is important for strengthening the future research of new strategies developed for insect pest control by the understanding of symbiotic relationships and multitrophic interactions between host plant and insects.
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Affiliation(s)
- M S Noman
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, P.R. China
| | - L Liu
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, P.R. China
| | - Z Bai
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, P.R. China
| | - Z Li
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, P.R. China
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26
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Abstract
Identification of the male-determining factor in invasive fruit flies expands biocontrol options
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Affiliation(s)
- Reem Makki
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Victoria H. Meller
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
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27
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Meccariello A, Salvemini M, Primo P, Hall B, Koskinioti P, Dalíková M, Gravina A, Gucciardino MA, Forlenza F, Gregoriou ME, Ippolito D, Monti SM, Petrella V, Perrotta MM, Schmeing S, Ruggiero A, Scolari F, Giordano E, Tsoumani KT, Marec F, Windbichler N, Arunkumar KP, Bourtzis K, Mathiopoulos KD, Ragoussis J, Vitagliano L, Tu Z, Papathanos PA, Robinson MD, Saccone G. Maleness-on-the-Y ( MoY) orchestrates male sex determination in major agricultural fruit fly pests. Science 2019; 365:1457-1460. [PMID: 31467189 DOI: 10.1126/science.aax1318] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 08/16/2019] [Indexed: 12/16/2022]
Abstract
In insects, rapidly evolving primary sex-determining signals are transduced by a conserved regulatory module controlling sexual differentiation. In the agricultural pest Ceratitis capitata (Mediterranean fruit fly, or Medfly), we identified a Y-linked gene, Maleness-on-the-Y (MoY), encoding a small protein that is necessary and sufficient for male development. Silencing or disruption of MoY in XY embryos causes feminization, whereas overexpression of MoY in XX embryos induces masculinization. Crosses between transformed XY females and XX males give rise to males and females, indicating that a Y chromosome can be transmitted by XY females. MoY is Y-linked and functionally conserved in other species of the Tephritidae family, highlighting its potential to serve as a tool for developing more effective control strategies against these major agricultural insect pests.
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Affiliation(s)
- Angela Meccariello
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy
| | - Marco Salvemini
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy
| | - Pasquale Primo
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy
| | - Brantley Hall
- Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, USA
| | - Panagiota Koskinioti
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria.,Department of Biochemistry and Biotechnology, University of Thessaly, 41500 Larissa, Greece
| | - Martina Dalíková
- Institute of Entomology, Biology Centre of the Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic.,Faculty of Science, University of South Bohemia, 370 05 České Budějovice, Czech Republic
| | - Andrea Gravina
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy
| | | | - Federica Forlenza
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy
| | - Maria-Eleni Gregoriou
- Department of Biochemistry and Biotechnology, University of Thessaly, 41500 Larissa, Greece
| | - Domenica Ippolito
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy
| | - Simona Maria Monti
- Institute of Biostructures and Bioimaging (IBB), CNR, 80134 Naples, Italy
| | - Valeria Petrella
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy
| | | | - Stephan Schmeing
- Institute of Molecular Life Sciences and SIB Swiss Institute of Bioinformatics, University of Zurich, 8057 Zurich, Switzerland
| | - Alessia Ruggiero
- Institute of Biostructures and Bioimaging (IBB), CNR, 80134 Naples, Italy
| | - Francesca Scolari
- Department of Biology and Biotechnology, University of Pavia, 27100 Pavia, Italy
| | - Ennio Giordano
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy
| | - Konstantina T Tsoumani
- Department of Biochemistry and Biotechnology, University of Thessaly, 41500 Larissa, Greece
| | - František Marec
- Institute of Entomology, Biology Centre of the Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic
| | - Nikolai Windbichler
- Department of Life Sciences, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Kallare P Arunkumar
- Centre of Excellence for Genetics and Genomics of Silkmoths, Laboratory of Molecular Genetics, Centre for DNA Fingerprinting and Diagnostics, Hyderabad 500 039, India
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
| | - Kostas D Mathiopoulos
- Department of Biochemistry and Biotechnology, University of Thessaly, 41500 Larissa, Greece
| | - Jiannis Ragoussis
- Department of Human Genetics and Bioengineering, McGill University and Genome Quebec Innovation Centre, Montreal, QC H3A 0G1, Canada
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging (IBB), CNR, 80134 Naples, Italy
| | - Zhijian Tu
- Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, USA
| | - Philippos Aris Papathanos
- Section of Genomics and Genetics, Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy. .,Department of Entomology, The Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Mark D Robinson
- Institute of Molecular Life Sciences and SIB Swiss Institute of Bioinformatics, University of Zurich, 8057 Zurich, Switzerland.
| | - Giuseppe Saccone
- Department of Biology, University of Naples "Federico II," 80126 Napoli, Italy.
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Gu X, Zhao Y, Su Y, Wu J, Wang Z, Hu J, Liu L, Zhao Z, Hoffmann AA, Chen B, Li Z. A transcriptional and functional analysis of heat hardening in two invasive fruit fly species, Bactrocera dorsalis and Bactrocera correcta. Evol Appl 2019; 12:1147-1163. [PMID: 31293628 PMCID: PMC6597872 DOI: 10.1111/eva.12793] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 03/01/2019] [Accepted: 03/07/2019] [Indexed: 12/15/2022] Open
Abstract
Many insects have the capacity to increase their resistance to high temperatures by undergoing heat hardening at nonlethal temperatures. Although this response is well established, its molecular underpinnings have only been investigated in a few species where it seems to relate at least partly to the expression of heat shock protein (Hsp) genes. Here, we studied the mechanism of hardening and associated transcription responses in larvae of two invasive fruit fly species in China, Bactrocera dorsalis and Bactrocera correcta. Both species showed hardening which increased resistance to 45°C, although the more widespread B. dorsalis hardened better at higher temperatures compared to B. correcta which hardened better at lower temperatures. Transcriptional analyses highlighted expression changes in a number of genes representing different biochemical pathways, but these changes and pathways were inconsistent between the two species. Overall B. dorsalis showed expression changes in more genes than B. correcta. Hsp genes tended to be upregulated at a hardening temperature of 38°C in both species, while at 35°C many Hsp genes tended to be upregulated in B. correcta but not B. dorsalis. One candidate gene (the small heat shock protein gene, Hsp23) with a particularly high level of upregulation was investigated functionally using RNA interference (RNAi). We found that RNAi may be more efficient in B. dorsalis, in which suppression of the expression of this gene removed the hardening response, whereas in B. correcta RNAi did not decrease the hardening response. The different patterns of gene expression in these two species at the two hardening temperatures highlight the diverse mechanisms underlying hardening even in closely related species. These results may provide target genes for future control efforts against such pest species.
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Affiliation(s)
- Xinyue Gu
- Department of Entomology, College of Plant ProtectionChina Agricultural UniversityBeijingChina
| | - Yan Zhao
- Department of Entomology, College of Plant ProtectionChina Agricultural UniversityBeijingChina
| | - Yun Su
- Department of Entomology, College of Plant ProtectionChina Agricultural UniversityBeijingChina
| | - Jiajiao Wu
- Guangdong Inspection and Quarantine Technology CenterGuangzhouChina
| | - Ziya Wang
- Department of Entomology, College of Plant ProtectionChina Agricultural UniversityBeijingChina
| | - Juntao Hu
- Redpath MuseumMcGill UniversityMontrealQuebecCanada
- Department of BiologyMcGill UniversityMontrealQuebecCanada
| | - Lijun Liu
- Department of Entomology, College of Plant ProtectionChina Agricultural UniversityBeijingChina
| | - Zihua Zhao
- Department of Entomology, College of Plant ProtectionChina Agricultural UniversityBeijingChina
| | - Ary A. Hoffmann
- School of BioSciences, Bio21 InstituteUniversity of MelbourneParkvilleVictoriaAustralia
| | - Bing Chen
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of ZoologyChinese Academy of SciencesBeijingChina
- Present address:
College of Life SciencesHebei UniversityBaodingChina
| | - Zhihong Li
- Department of Entomology, College of Plant ProtectionChina Agricultural UniversityBeijingChina
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29
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Rull J, Lasa R, Guillén L, Aluja M. The Effect of Winter Length on Duration of Dormancy and Survival of Rhagoletis completa (Diptera: Tephritidae) and Associated Parasitoids From Northeastern Mexico. JOURNAL OF INSECT SCIENCE (ONLINE) 2019; 19:5490192. [PMID: 31095311 PMCID: PMC6521683 DOI: 10.1093/jisesa/iez034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Indexed: 06/09/2023]
Abstract
The walnut husk fly Rhagoletis completa (Cresson), native to the Midwestern United States and Mexico, is invasive in California and Europe. It is one of the most important pests of walnuts in areas gathering 30% of the world production. Knowledge of life-history regulation is important for the design of management strategies. Research on dormancy has been performed on invasive populations, and not on populations at the southern extreme of its native range. Here, we examined the effect of winter length on fly and parasitoid emergence, survival, and duration of dormancy. Percent emergence was higher for chill periods at 5°C ranging from 8 to 20 wk. No or insufficient chill resulted in low emergence and a significant proportion of individuals in prolonged dormancy (>1 yr). Duration of dormancy was longer for pupae at constant temperatures and a 4-wk chill period than longer winter durations. Dormancy was longer for Mexican than that reported for U.S. populations, suggesting the existence of a latitudinal cline where populations at southern latitudes have evolved slower metabolic rates. Three parasitoid species were found associated with R. completa (Aganaspis alujai (Wharton and Ovruski) (Hymenoptera: Figitidae), Diachasmimorpha juglandis Muesebeck, and Diachasmimorpha mellea Gahan) (Hymenoptera: Braconidae). Results suggest that rearing of R. completa is possible by subjecting pupae to chill periods between 8 and 20 wk. Overwintering mortality of flies and A. alujai could be further reduced above 5°C. Our findings can contribute for the accurate development of predictive models on invasion potential, development, fly and parasitoid rearing, and biological control.
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Affiliation(s)
- Juan Rull
- PROIMI Biotecnología-CONICET, LIEMEN-División Control Biológico de Plagas, Av. Belgrano y Pje. Caseros, T4001MVB San Miguel de Tucumán, Tucumán, Argentina
| | - Rodrigo Lasa
- Instituto de Ecología, A.C., Carretera Antigua a Coatepec no. 351, Colonia el Haya, CP 91070 Xalapa, Veracruz, México
| | - Larissa Guillén
- Instituto de Ecología, A.C., Carretera Antigua a Coatepec no. 351, Colonia el Haya, CP 91070 Xalapa, Veracruz, México
| | - Martin Aluja
- Instituto de Ecología, A.C., Carretera Antigua a Coatepec no. 351, Colonia el Haya, CP 91070 Xalapa, Veracruz, México
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30
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Son AR, Suh SJ, Choi DS. Non-target insects captured in tephritid fruit fly (Diptera: Tephritidae) surveillance traps in South Korea: a survey-based study. JOURNAL OF ASIA-PACIFIC BIODIVERSITY 2019. [DOI: 10.1016/j.japb.2018.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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31
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Emery SE, Mills NJ. Sources of Variation in the Adult Flight of Walnut Husk Fly (Diptera: Tephritidae): A Phenology Model for California Walnut Orchards. ENVIRONMENTAL ENTOMOLOGY 2019; 48:234-244. [PMID: 30520946 DOI: 10.1093/ee/nvy170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Indexed: 06/09/2023]
Abstract
A phenology model of the walnut husk fly, Rhagoletis completa Cresson, was developed to more accurately predict the timing of the flight period and optimize management decisions. A data set of 153 orchard years in which adults were trapped throughout the season was used for the development and validation of this model. Data from California Irrigation Management Information System (CIMIS) weather stations were used to match orchard-year datasets with historical climatic data on degree-day (DD) accumulation, winter chill, and winter rainfall. A cumulative Weibull distribution was used to model the relationship between cumulative trap catch and DD accumulation for R. completa in California. The model was used to predict thermal requirements for the start (5% cumulative trap catch) and mid-point (50% cumulative trap catch) of the flight period, which were 1,670 and 2,179 DDs, respectively. The prediction for 50% cumulative trap catch of R. completa in California was much higher than the thermal requirement estimated in Oregon previously (1,751 DDs). Linear mixed effects models were used to evaluate other environmental and orchard-specific factors which could explain the large variation between predicted and observed thermal requirements for both the start and mid-point of the flight period. Latitude, walnut cultivar leaf-out time, orchard age and year, as a continuous variable, all contributed significantly to explain deviations from the predictions of the DD model for individual orchard years. Such factors can be used both to adjust predicted thermal requirements for these two specific and informative stages of the flight period, and to provide a basis for ecological and evolutionary hypotheses.
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Affiliation(s)
| | - Nicholas J Mills
- Department of Environmental Science, Policy and Management, University of California Berkeley, 130 Mulford Hall, Berkeley, CA 94720-3114
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32
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Rull J, Tadeo E, Lasa R, Aluja M. The effect of winter length on duration of dormancy and survival of specialized herbivorous Rhagoletis fruit flies from high elevation environments with acyclic climatic variability. BULLETIN OF ENTOMOLOGICAL RESEARCH 2018; 108:461-470. [PMID: 28925346 DOI: 10.1017/s0007485317000979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Dormancy can be defined as a state of suppressed development allowing insects to cope with adverse conditions and plant phenology. Among specialized herbivorous insects exploiting seasonal resources, diapause frequently evolves as a strategy to adjust to predictable plant seasonal cycles. To cope with acyclic and unpredictable climatic events, it has been found for some insects that a proportion of the population undergoes prolonged dormancy. We compared the response of three species in the Rhagoletis cingulata species group exploiting plants differing in fruiting phenology from environments varying in frequency and timing of acyclic climatic catastrophic events (frost during flowering and fruit set) and varying also in the time of the onset of the rainy season. Small proportions (10 months), and large proportions of pupae died without emerging as adults. The number of days elapsed from the end of artificial winter and adult eclosion was longer for R. cingulata exploiting late fruiting Prunus serotina in Northeastern Mexico than for flies recovered from earlier fruiting plants in the central Altiplano. Rhagoletis turpiniae and northeastern R. cingulata pupae suffered high proportions of parasitism. Large proportions of R. cingulata from central Mexico engaging in prolonged dormancy may be explained by the fact that flowering and fruit set for its host, P. serotina var capuli, driven by the timing of maximum precipitation, matches a period of highest probability of frost often resulting in large areas with fruitless trees at unpredictable time intervals. As a consequence of differences in host plant fruiting phenology, central and northeastern Mexican R. cingulata were found to be allochronically isolated. Prolonged dormancy may have resulted in escape from parasitism.
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Affiliation(s)
- J Rull
- PROIMI Biotecnología-CONICET,LIEMEN-División Control Biológico de Plagas,Av. Belgrano y Pje. Caseros,T4001MVB San Miguel de Tucumán,Tucumán,Argentina
| | - E Tadeo
- Red de Manejo Biorracional de Plagas y Vectores,Instituto de Ecología,A.C.,Xalapa,Veracruz 91070,México
| | - R Lasa
- Red de Manejo Biorracional de Plagas y Vectores,Instituto de Ecología,A.C.,Xalapa,Veracruz 91070,México
| | - M Aluja
- Red de Manejo Biorracional de Plagas y Vectores,Instituto de Ecología,A.C.,Xalapa,Veracruz 91070,México
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33
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Khan MAM, Manoukis NC, Osborne T, Barchia IM, Gurr GM, Reynolds OL. Semiochemical mediated enhancement of males to complement sterile insect technique in management of the tephritid pest Bactrocera tryoni (Froggatt). Sci Rep 2017; 7:13366. [PMID: 29042676 PMCID: PMC5645464 DOI: 10.1038/s41598-017-13843-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 10/02/2017] [Indexed: 11/09/2022] Open
Abstract
Queensland fruit fly, Bactrocera tryoni (Froggatt), is the most significant pest of Australia's $9 billion horticulture industry. The sterile insect technique (SIT) and cue-lure (a synthetic analogue of raspberry ketone (RK))-based male annihilation technique (MAT) are two of the most effective management tools against this pest. However, combining these two approaches is considered incompatible as MAT kills sterile and 'wild' males indiscriminately. In the present study we tested the effect of pre-release feeding of B. tryoni on RK on their post-release survival and response to MAT in field cages and in a commercial orchard. In both settings, survival was higher for RK supplemented adults compared to control (i.e. RK denied) adults. A lower number of RK supplemented sterile males were recaptured in MAT baited traps in both the field cages and orchard trials compared to RK denied sterile males. The advantage of this novel "male replacement" approach (relatively selective mortality of wild males at lure-baited traps while simultaneously releasing sterile males) is increasing the ratio of sterile to wild males in the field population, with potential for reducing the number of sterile males to be released.
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Affiliation(s)
- Mohammed Abul Monjur Khan
- Biosecurity and Food Safety, NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, Menangle, New South Wales, Australia. .,Department of Entomology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
| | - Nicholas C Manoukis
- USDA-Agricultural Research Service, Daniel K. Inouye US Pacific Basin Agricultural Research Center, Hilo, Hawaii, 96720, USA
| | - Terry Osborne
- Biosecurity and Food Safety, NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, Menangle, New South Wales, Australia
| | - Idris M Barchia
- Biosecurity and Food Safety, NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, Menangle, New South Wales, Australia
| | - Geoff M Gurr
- Graham Centre for Agricultural Innovation (an alliance between NSW Department of Primary Industries and Charles Sturt University), Locked Bag 588, WaggaWagga, NSW 2678, Australia. .,State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
| | - Olivia L Reynolds
- Biosecurity and Food Safety, NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, Menangle, New South Wales, Australia. .,Graham Centre for Agricultural Innovation (an alliance between NSW Department of Primary Industries and Charles Sturt University), Locked Bag 588, WaggaWagga, NSW 2678, Australia. .,State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Marchioro CA. Global Potential Distribution of Bactrocera carambolae and the Risks for Fruit Production in Brazil. PLoS One 2016; 11:e0166142. [PMID: 27832144 PMCID: PMC5104352 DOI: 10.1371/journal.pone.0166142] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 10/24/2016] [Indexed: 11/19/2022] Open
Abstract
The carambola fruit fly, Bactrocera carambolae, is a tephritid native to Asia that has invaded South America through small-scale trade of fruits from Indonesia. The economic losses associated with biological invasions of other fruit flies around the world and the polyphagous behaviour of B. carambolae have prompted much concern among government agencies and farmers with the potential spread of this pest. Here, ecological niche models were employed to identify suitable environments available to B. carambolae in a global scale and assess the extent of the fruit acreage that may be at risk of attack in Brazil. Overall, 30 MaxEnt models built with different combinations of environmental predictors and settings were evaluated for predicting the potential distribution of the carambola fruit fly. The best model was selected based on threshold-independent and threshold-dependent metrics. Climatically suitable areas were identified in tropical and subtropical regions of Central and South America, Sub-Saharan Africa, west and east coast of India and northern Australia. The suitability map of B. carambola was intersected against maps of fruit acreage in Brazil. The acreage under potential risk of attack varied widely among fruit species, which is expected because the production areas are concentrated in different regions of the country. The production of cashew is the one that is at higher risk, with almost 90% of its acreage within the suitable range of B. carambolae, followed by papaya (78%), tangerine (51%), guava (38%), lemon (30%), orange (29%), mango (24%) and avocado (20%). This study provides an important contribution to the knowledge of the ecology of B. carambolae, and the information generated here can be used by government agencies as a decision-making tool to prevent the carambola fruit fly spread across the world.
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Affiliation(s)
- Cesar A. Marchioro
- Department of Agriculture, Biodiversity and Forest, Campus of Curitibanos, Centre of Rural Science, Universidade Federal de Santa Catarina, Curitibanos, Santa Catarina, Brazil
- * E-mail:
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35
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Wang M, Cribb B, Clarke AR, Hanan J. A Generic Individual-Based Spatially Explicit Model as a Novel Tool for Investigating Insect-Plant Interactions: A Case Study of the Behavioural Ecology of Frugivorous Tephritidae. PLoS One 2016; 11:e0151777. [PMID: 26999285 PMCID: PMC4801379 DOI: 10.1371/journal.pone.0151777] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 03/03/2016] [Indexed: 11/24/2022] Open
Abstract
Computational modelling of mechanisms underlying processes in the real world can be of great value in understanding complex biological behaviours. Uptake in general biology and ecology has been rapid. However, it often requires specific data sets that are overly costly in time and resources to collect. The aim of the current study was to test whether a generic behavioural ecology model constructed using published data could give realistic outputs for individual species. An individual-based model was developed using the Pattern-Oriented Modelling (POM) strategy and protocol, based on behavioural rules associated with insect movement choices. Frugivorous Tephritidae (fruit flies) were chosen because of economic significance in global agriculture and the multiple published data sets available for a range of species. The Queensland fruit fly (Qfly), Bactrocera tryoni, was identified as a suitable individual species for testing. Plant canopies with modified architecture were used to run predictive simulations. A field study was then conducted to validate our model predictions on how plant architecture affects fruit flies’ behaviours. Characteristics of plant architecture such as different shapes, e.g., closed-canopy and vase-shaped, affected fly movement patterns and time spent on host fruit. The number of visits to host fruit also differed between the edge and centre in closed-canopy plants. Compared to plant architecture, host fruit has less contribution to effects on flies’ movement patterns. The results from this model, combined with our field study and published empirical data suggest that placing fly traps in the upper canopy at the edge should work best. Such a modelling approach allows rapid testing of ideas about organismal interactions with environmental substrates in silico rather than in vivo, to generate new perspectives. Using published data provides a saving in time and resources. Adjustments for specific questions can be achieved by refinement of parameters based on targeted experiments.
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Affiliation(s)
- Ming Wang
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, QLD, Australia
| | - Bronwen Cribb
- Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, QLD, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Anthony R. Clarke
- School of Earth, Environmental and Biological Sciences, Queensland University of Technology, Brisbane, QLD, Australia
- Plant Biosecurity Cooperative Research Centre, Bruce, ACT, Australia
| | - Jim Hanan
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, QLD, Australia
- * E-mail:
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