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Acoustic characteristics of sound produced by males of Bactrocera oleae change in the presence of conspecifics. Sci Rep 2022; 12:13086. [PMID: 35906260 PMCID: PMC9338093 DOI: 10.1038/s41598-022-16888-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 07/18/2022] [Indexed: 11/17/2022] Open
Abstract
Males of the olive fruit fly Bactrocera oleae vibrate and stridulate their wings at dusk producing sounds different from flight sounds with no confirmed behavior role. We recorded and performed a temporal-spectral analysis of this sound. Sound produced by male wing vibration/stridulation consists of intermittent pulses of highly variable duration and of fundamental frequency of around 350 Hz. Flight sound has a much lower fundamental frequency of approximately 180 Hz. Males begin to display wing vibration and sound production at the beginning of their sexual maturity at the 5th day of their age. This behavior is more pronounced in the presence of another conspecific male and observed less in male–female pairs or in solitary males. Broadcasts of the recorded sound did not attract flies of either sex. The highest fundamental frequency was found in association with wing vibrations emitted by male–male pairs, followed by those emitted by male–female pairs and then solitary males, which showed the lowest frequency values. The mean pulse duration and interpulse interval were shorter in male–male pairs than in male–female pairs. We assume that the male wing vibration and the produced signal, apart from its possible role in the courtship of the females, could also be associated with male–male interactions for territorial and rival activities, for which further experiments are required.
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Effects of Diaphorina citri Population Density on Daily Timing of Vibrational Communication Calls: Potential Benefits in Finding Forage. INSECTS 2020; 11:insects11030182. [PMID: 32182974 PMCID: PMC7142751 DOI: 10.3390/insects11030182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/07/2020] [Accepted: 03/09/2020] [Indexed: 11/17/2022]
Abstract
Adult Diaphorina citri (ACP) use visual and chemical cues to locate young citrus flush shoots on which they forage and oviposit, and they use vibrational communication duetting calls as cues to help locate mates. For individual pairs, calling and mating usually peaks between 10:00 and 15:00. To explore whether call rates (calls/h) are affected by interactions with nearby conspecifics, rates were compared in small citrus trees on which either 5 or 25 ACP female and male pairs had been released at 17:00 for later recording from sunrise (06:00) to 22:00. Final ACP locations were noted 40 h after release. Call rates were similar in both treatments during normal mating hours. However, rates were significantly higher for low- than high-density treatments between 06:00 and 10:00, which suggests calling during this period may be affected by conspecific density. Both sexes aggregated on flush at both densities. We discuss the potential that ACP producing calls near sunrise, outside of normal mating hours, might benefit from gains in reproductive fitness in low-density contexts if they call not only to locate mates but also to locate preferred flush—in which case, co-opting of vibrations to disrupt both mating and foraging may be feasible.
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Rohde BB, Staunton KM, Zeak NC, Beebe N, Snoad N, Bondarenco A, Liddington C, Anderson JA, Xiang W, Mankin RW, Ritchie SA. Waterproof, low-cost, long-battery-life sound trap for surveillance of male Aedes aegypti for rear-and-release mosquito control programmes. Parasit Vectors 2019; 12:417. [PMID: 31488182 DOI: 10.1186/s13071-019-3647-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/25/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Sterile male rear-and-release programmes are of growing interest for controlling Aedes aegypti, including use an "incompatible insect technique" (IIT) to suppress transmission of dengue, Zika, and other viruses. Under IIT, males infected with Wolbachia are released into the suppression area to induce cytoplasmic incompatibility in uninfected populations. These and similar mosquito-release programmes require cost-effective field surveys of both sexes to optimize the locations, timing, and quantity of releases. Unfortunately, traps that sample male Ae. aegypti effectively are expensive and usually require mains power. Recently, an electronic lure was developed that attracts males using a 484 Hz sinusoidal tone mimicking the female wingbeat frequencies, broadcast in a 120 s on/off cycle. When deployed in commercially available gravid Aedes traps (GATs), the new combination, sound-GAT (SGAT), captures both males and females effectively. Given its success, there is interest in optimizing SGAT to reduce cost and power usage while maximizing catch rates. METHODS Options considered in this study included use of a smaller, lower-power microcontroller (Tiny) with either the original or a lower-cost speaker (lcS). A 30 s on/off cycle was tested in addition to the original 120 s cycle to minimize the potential that the longer cycle induced habituation. The original SGAT was compared against other traps incorporating the Tiny-based lures for mosquito capture in a large semi-field cage. The catch rates in waterproofed versions of this trap were then compared with catch rates in standard [BG-Sentinel 2 (BGS 2); Biogents AG, Regensburg, Germany] traps during an IIT field study in the Innisfail region of Queensland, Australia in 2017. RESULTS The system with a low-power microcontroller and low-cost speaker playing a 30 s tone (Tiny-lcS-30s) caught the highest proportion of males. The mean proportions of males caught in a semi-field cage were not significantly different among the original design and the four low-power, low-cost versions of the SGAT. During the IIT field study, the waterproofed version of the highest-rated, Tiny-lcS-30s SGAT captured male Ae. aegypti at similar rates as co-located BGS-2 traps. CONCLUSIONS Power- and cost-optimized, waterproofed versions of male Ae. aegypti acoustic lures in GATs are now available for field use in areas with sterile male mosquito rear-and-release programmes.
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Affiliation(s)
- Barukh B Rohde
- Department of Electrical & Computer Engineering, University of Florida, Gainesville, FL, USA. .,College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Australia. .,Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Australia.
| | - Kyran M Staunton
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Australia.,Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Australia
| | - Nicholas C Zeak
- Department of Electrical & Computer Engineering, University of Florida, Gainesville, FL, USA.,College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Australia.,Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Australia
| | - Nigel Beebe
- Health and Biosecurity, CSIRO, Brisbane, QLD, Australia.,School of Biological Sciences Faculty of Science, University of Queensland, St Lucia, Brisbane, QLD, Australia
| | - Nigel Snoad
- Verily Life Sciences, 259 East Grand Avenue, South San Francisco, CA, 94080, USA
| | | | | | | | - Wei Xiang
- College of Science and Engineering, James Cook University, Cairns, QLD, 4878, Australia
| | - Richard W Mankin
- Center for Medical, Agricultural, and Veterinary Entomology, US Department of Agriculture, Agricultural Research Service, Gainesville, FL, USA.
| | - Scott A Ritchie
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Australia.,Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Australia
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Pérez J, Park SJ, Taylor PW. Domestication modifies the volatile emissions produced by male Queensland fruit flies during sexual advertisement. Sci Rep 2018; 8:16503. [PMID: 30405136 PMCID: PMC6220308 DOI: 10.1038/s41598-018-34569-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 10/18/2018] [Indexed: 11/20/2022] Open
Abstract
Insects commonly undergo substantial changes during adaptation for laboratory or mass-rearing environments (‘domestication’) that may have significant implications for inferences from laboratory studies and utility for biological control. We assessed the effect of domestication on the amount and blend of volatiles released during sexual calling by laboratory-reared Bactrocera tryoni males using colonies from three regions of Australia: Brisbane, Cairns and Sydney. For each region, volatiles released by males from a young colony (five or fewer generations) and an old colony (20+ generations) during sexual calling was compared. Males from old colonies released more volatiles than males from young colonies. All components of the blend were more abundant in one or more of the older colonies, although differences varied by compound and by region. To assess changes over generations, the young and old colonies obtained from Brisbane were sampled at 5, 12 and 15 generations (young colony) and 25, 35 and 38 generations (old colony). While the old colony remained unchanged, flies from the young colony released more volatiles at each sequential sampling episode, and became increasingly similar to the old colony. Increased volatile production during domestication may be an adaptive response to crowded rearing conditions in which males need to overcome a chemically noisy environment to be sexually successful.
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Affiliation(s)
- Jeanneth Pérez
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia. .,Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia.
| | - Soo Jean Park
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia.,Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia
| | - Phillip W Taylor
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia.,Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia
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Vaníčková L, Hernández-Ortiz V, Bravo ISJ, Dias V, Roriz AKP, Laumann RA, Mendonça ADL, Paranhos BAJ, do Nascimento RR. Current knowledge of the species complex Anastrepha fraterculus (Diptera, Tephritidae) in Brazil. Zookeys 2015:211-37. [PMID: 26798261 PMCID: PMC4714071 DOI: 10.3897/zookeys.540.9791] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 06/20/2015] [Indexed: 11/12/2022] Open
Abstract
The study of the species complex Anastrephafraterculus (Af complex) in Brazil is especially important in a taxonomical, evolutionary and pest management context, because there are evidences that some of them may occur in sympatry. In this review, we analyzed the main results supporting evidences that three cryptic species occur in Brazil. The taxonomical and phylogenetic relationships based on eggshell morphology, adult morphometrics, as well as cytotaxonomy and genetic differentiations are discussed. We also review available information on sexual behavior including acoustic communication of males during courtship and sexual incompatibility; and chemical signals involved in the communication between sexes, with a special focus on sex pheromones. We examined the role of long- and short-range pheromones (male-produced volatiles and cuticular hydrocarbons, respectively), their implications in sexual isolation, and their possible use for chemotaxonomic differentiation of the putative species of the Af complex.
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Affiliation(s)
- Lucie Vaníčková
- Laboratório de Ecologia Química, Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Av. Lourival de Melo Mota, s/n, Tabuleiro, 57072-970, Maceió, AL, Brazil
| | - Vicente Hernández-Ortiz
- Instituto de Ecología A.C., Red de Interacciones Multitróficas. Carretera Antigua a Coatepec 351, El Haya, 91070, Xalapa, Veracruz, Mexico
| | - Iara Sordi Joachim Bravo
- Universidade Federal da Bahia, Instituto de Biologia, Departamento da Biologia Geral. R. Barão do Geremoabo s/n, Campus Universitário de Ondina, 40170-290, Salvador, BA, Brazil
| | - Vanessa Dias
- University of Florida, Gainesville, FL 32611, United States
| | - Alzira Kelly Passos Roriz
- Universidade Federal da Bahia, Instituto de Biologia, Departamento da Biologia Geral. R. Barão do Geremoabo s/n, Campus Universitário de Ondina, 40170-290, Salvador, BA, Brazil
| | - Raul Alberto Laumann
- Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), Centro Nacional de Pesquisa de Recursos Genéticos e Biotecnologia, Parque Estação Biológica W5 Norte / Final Asa Norte, 70770917, Brasília, DF, Brazil
| | - Adriana de Lima Mendonça
- Laboratório de Ecologia Química, Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Av. Lourival de Melo Mota, s/n, Tabuleiro, 57072-970, Maceió, AL, Brazil
| | | | - Ruth Rufino do Nascimento
- Laboratório de Ecologia Química, Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Av. Lourival de Melo Mota, s/n, Tabuleiro, 57072-970, Maceió, AL, Brazil
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