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Myrie A, Hall T, Luke D, Chinthapalli BR, Tennant P, Robinson D. Coffee Berry Borer, Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae): Activity and Infestation in the High Mountain and Blue Mountain Regions of Jamaica. INSECTS 2023; 14:694. [PMID: 37623404 PMCID: PMC10455829 DOI: 10.3390/insects14080694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/17/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023]
Abstract
Jamaica produces coffee marketed as Blue Mountain and high mountain (grown outside the Blue Mountains). Since the discovery of the coffee berry borer (CBB; Hypothenemus hampei) in Jamaica in 1978, chemical control has traditionally been the primary approach used to protect the crop from the pest. However, in the last 20 years, there has been an effort to shift towards more sustainable management strategies. The study was conducted to determine CBB activity (trap catch) and field infestation on coffee farms in the high mountains and Blue Mountains of Jamaica, over a crop cycle. A total of 27,929 and 12,921 CBBs were captured at high mountain and Blue Mountain farms, respectively. Peak CBB activity occurred in April in the high mountain region (365 CBBs/trap/month) and February in the Blue Mountain region (129 CBBs/trap/month). The highest levels of infestation were in November (33%) and October (34%) in the high mountain region and Blue Mountain region, respectively. There was no significant difference in the patterns of CBB activity and infestation between the study locations, and neither were related to the temperature or relative humidity. However, there was a significant relationship with rainfall. These data suggest that the population dynamics of the CBB may involve complex interactions among weather conditions, berry development, and agronomic practices.
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Affiliation(s)
| | | | | | | | | | - Dwight Robinson
- Department of Life Sciences, University of the West Indies, Mona, Kingston 7, Jamaica; (A.M.); (T.H.); (D.L.); (B.R.C.); (P.T.)
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Cabanas-Garrido EC, Ledesma-Escobar CA, Priego-Capote F. Use of surgical masks for sampling in the determination of volatile organic compounds. Talanta 2023. [DOI: 10.1016/j.talanta.2022.124105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Navarro-Escalante L, Hernandez-Hernandez EM, Nuñez J, Acevedo FE, Berrio A, Constantino LM, Padilla-Hurtado BE, Molina D, Gongora C, Acuña R, Stuart J, Benavides P. A coffee berry borer (Hypothenemus hampei) genome assembly reveals a reduced chemosensory receptor gene repertoire and male-specific genome sequences. Sci Rep 2021; 11:4900. [PMID: 33649370 PMCID: PMC7921381 DOI: 10.1038/s41598-021-84068-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 01/12/2021] [Indexed: 01/31/2023] Open
Abstract
Coffee berry borer-CBB (Hypothenemus hampei) is a globally important economic pest of coffee (Coffea spp.). Despite current insect control methods for managing CBB, development of future control strategies requires a better understanding of its biology and interaction with its host plant. Towards this objective, we performed de novo CBB genome and transcriptome sequencing, improved CBB genome assembly and predicted 18,765 protein-encoding genes. Using genome and transcriptome data, we annotated the genes associated with chemosensation and found a reduced gene repertoire composed by 67 odorant receptors (ORs), 62 gustatory receptors (GRs), 33 ionotropic receptors (IRs) and 29 odorant-binding proteins (OBPs). In silico transcript abundance analysis of these chemosensory genes revealed expression enrichment in CBB adults compared with larva. Detection of differentially expressed chemosensory genes between males and females is likely associated with differences in host-finding behavior between sexes. Additionally, we discovered male-specific genome content and identified candidate male-specific expressed genes on these scaffolds, suggesting that a Y-like chromosome may be involved in the CBB's functional haplodiploid mechanism of sex determination.
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Affiliation(s)
| | | | - Jonathan Nuñez
- Manaaki Whenua-Landcare Research, PO Box 69040, Lincoln, 7640, New Zealand
| | - Flor E Acevedo
- Department of Entomology, Pennsylvania State University, University Park, PA, USA
| | | | | | - Beatriz E Padilla-Hurtado
- Instituto de Investigación en Microbiología Y Biotecnología Agroindustrial, Universidad Católica de Manizales, Manizales, Colombia
| | - Diana Molina
- National Coffee Research Center-CENICAFE, Manizales, Colombia
| | | | - Ricardo Acuña
- National Coffee Research Center-CENICAFE, Manizales, Colombia
| | - Jeff Stuart
- Department of Entomology, Purdue University, West Lafayette, USA
| | - Pablo Benavides
- National Coffee Research Center-CENICAFE, Manizales, Colombia
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Coffee Berry Borer ( Hypothenemus hampei), a Global Pest of Coffee: Perspectives from Historical and Recent Invasions, and Future Priorities. INSECTS 2020; 11:insects11120882. [PMID: 33322763 PMCID: PMC7763606 DOI: 10.3390/insects11120882] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/05/2020] [Accepted: 12/09/2020] [Indexed: 01/30/2023]
Abstract
Coffee berry borer (Hypothenemus hampei (Ferrari), CBB) has invaded nearly every coffee-producing country in the world, and it is commonly recognized as the most damaging insect pest of coffee. While research has been conducted on this pest in individual coffee-growing regions, new insights may be gained by comparing and contrasting patterns of invasion and response across its global distribution. In this review, we explore the existing literature and focus on common themes in the invasion biology of CBB by examining (1) how it was introduced into each particular region and the response to its invasion, (2) flight activity and infestation patterns, (3) economic impacts, and (4) management strategies. We highlight research conducted over the last ten years in Hawaii as a case study for the development and implementation of an effective integrated pest management (IPM) program for CBB, and also discuss biosecurity issues contributing to incursion and establishment. Potential areas for future research in each of the five major components of CBB IPM (monitoring and sampling, cultural, biological, chemical, and physical controls) are also presented. Finally, we emphasize that outreach efforts are crucial to the successful implementation of CBB IPM programs. Future research programs should strive to include coffee growers as much as possible to ensure that management options are feasible and cost-effective.
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Góngora CE, Tapias J, Jaramillo J, Medina R, Gonzalez S, Casanova H, Ortiz A, Benavides P. Evaluation of Terpene-Volatile Compounds Repellent to the Coffee Berry Borer, Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae). J Chem Ecol 2020; 46:881-890. [PMID: 32803512 DOI: 10.1007/s10886-020-01202-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 06/02/2020] [Accepted: 07/20/2020] [Indexed: 12/28/2022]
Abstract
The coffee berry borer (CBB) is one of the main coffee pests in the world including Colombia. This pest is difficult to manage because of its cryptic habits and the continuous availability of coffee fruits. Among the new management strategies being tested is the use of volatile compounds as insect repellents. In this work, the behavioral response of female adult CBBs to terpenes previously identified in the CBB-repellent plant species Lantana camara was evaluated. α-Terpinene, (R)-limonene, farnesene and β-caryophyllene terpenes were tested via a Y-tube olfactometer in which ripe coffee fruits were accompanied by terpenes at concentrations between 25 and 200 ppm. Only β-caryophyllene induced a significant and consistent CBB repellent effect at all tested doses. The protective effect of microencapsulated β-caryophyllene was then determined under laboratory conditions by incorporating the terpene in a colloidosome-gel system at 2.8 × 105 ng/h in the middle of coffee fruits with adult CBBs. The coffee fruits in turn presented a decrease in fruit infestation. Furthermore, the protection of coffee fruits when β-caryophyllene gels were hung in coffee trees was evaluated in the field; infestations were artificially induced by the use of raisins (CBB-infested old coffee fruits) placed on the ground. Compared with unprotected trees, the trees treated with caryophyllene gels exhibited a 33 to 45% lower degree of infestation. Taken together, the results show that β-caryophyllene is a promising compound for an integrated pest management (IPM) program in commercial coffee plantations.
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Affiliation(s)
- Carmenza E Góngora
- Department of Entomology, National Coffee Research Center, Cenicafé, Manizales, Colombia.
| | - Johanna Tapias
- Department of Entomology, National Coffee Research Center, Cenicafé, Manizales, Colombia
| | - Jorge Jaramillo
- Department of Entomology, National Coffee Research Center, Cenicafé, Manizales, Colombia
| | - Ruben Medina
- Department of Biometrics, National Coffee Research Center,, Cenicafé, Manizales, Colombia
| | - Sebastian Gonzalez
- Colloidosomes Group, Faculty of Chemistry, University of Antioquia, Medellín, Colombia
| | - Herley Casanova
- Colloidosomes Group, Faculty of Chemistry, University of Antioquia, Medellín, Colombia
| | - Aristófeles Ortiz
- Department of Plant Physiology, Coffee Research Center, Cenicafé, Manizales, Colombia
| | - Pablo Benavides
- Department of Entomology, National Coffee Research Center, Cenicafé, Manizales, Colombia
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The coffee agroecosystem: bio-economic analysis of coffee berry borer control (Hypothenemus hampei). Sci Rep 2020; 10:12262. [PMID: 32703996 PMCID: PMC7378549 DOI: 10.1038/s41598-020-68989-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 07/01/2020] [Indexed: 12/03/2022] Open
Abstract
Coffee, after petroleum, is the most valuable commodity globally in terms of total value (harvest to coffee cup). Here, our bioeconomic analysis considers the multitude of factors that influence coffee production. The system model used in the analysis incorporates realistic field models based on considerable new field data and models for coffee plant growth and development, the coffee/coffee berry borer (CBB) dynamics in response to coffee berry production and the role of the CBB parasitoids and their interactions in control of CBB. Cultural control of CBB by harvesting, cleanup of abscised fruits, and chemical sprays previously considered are reexamined here to include biopesticides for control of CBB such as entomopathogenic fungi (Beauveria bassiana, Metarhizium anisopliae) and entomopathogenic nematodes (Steinernema sp., Heterorhabditis). The bioeconomic analysis estimates the potential of each control tactic singly and in combination for control of CBB. The analysis explains why frequent intensive harvesting of coffee is by far the most effective and economically viable control practice for reducing CBB infestations in Colombia and Brazil.
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Vega FE, Simpkins A, Miranda J, Harnly JM, Infante F, Castillo A, Wakarchuk D, Cossé A. A Potential Repellent Against the Coffee Berry Borer (Coleoptera: Curculionidae: Scolytinae). JOURNAL OF INSECT SCIENCE 2017; 17:122. [PMID: 0 PMCID: PMC5751034 DOI: 10.1093/jisesa/iex095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Indexed: 05/24/2023]
Abstract
The coffee berry borer, Hypothenemus hampei (Ferrari), continues to pose a formidable challenge to coffee growers worldwide. Because of the cryptic life habit of the insect inside coffee berries, effective pest management strategies have been difficult to develop. A sesquiterpene, (E,E)-α-farnesene, produced by infested coffee berries has been identified as a potential repellent against the coffee berry borer both in laboratory bioassays and a field experiment in Hawaii. Various laboratory bioassays revealed significantly lower levels of infestation in berries treated with different concentrations of the (E,E)-α-farnesene. A field experiment in Hawaii resulted in up to 80% decreased coffee berry borer captures in traps containing a standard 3:1 methanol:ethanol attractant and a bubble cap formulation of (E,E)-α-farnesene compared to traps with just the attractant. (E,E)-α-farnesene was still active 19 wk after installation in the coffee plantation, based on 59% lower insect captures in traps containing the attractant + (E,E)-α-farnesene (1,737 insects) compared to traps containing the attractant (4,253 insects). The easy to install bubble caps are a welcome contrast with other pest management strategies that require spraying. The placement of (E,E)-α-farnesene in bubble caps in coffee plantations when coffee berries first become susceptible to infestations (ca. 90 d post-flowering) might result in lower infestation levels throughout the season, and consequently, increased yields and profits.
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Affiliation(s)
- Fernando E Vega
- Sustainable Perennial Crops Laboratory, U. S. Department of Agriculture, Agricultural Research Service, Beltsville, MD
| | - Ann Simpkins
- Sustainable Perennial Crops Laboratory, U. S. Department of Agriculture, Agricultural Research Service, Beltsville, MD
| | - Jose Miranda
- Tropical Plant Genetic Resources and Disease Research Unit, U. S. Department of Agriculture, Agricultural Research Service, Pacific Basin Agricultural Research Center, Hilo, HI
| | - James M Harnly
- Food Composition and Methods Development Laboratory, U. S. Department of Agriculture, Agricultural Research Service, Beltsville, MD
| | | | - Alfredo Castillo
- El Colegio de la Frontera Sur (ECOSUR), Tapachula, Chiapas, México
| | | | - Allard Cossé
- Crop Bioprotection Research Unit, National Center for Agricultural Utilization Research, U. S. Department of Agriculture, Agricultural Research Service, Peoria, IL
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Aristizábal LF, Shriner S, Hollingsworth R, Arthurs S. Flight Activity and Field Infestation Relationships for Coffee Berry Borer in Commercial Coffee Plantations in Kona and Kau Districts, Hawaii. JOURNAL OF ECONOMIC ENTOMOLOGY 2017; 110:2421-2427. [PMID: 29029300 DOI: 10.1093/jee/tox215] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Indexed: 06/07/2023]
Abstract
The coffee berry borer (CBB), Hypothenemus hampei Ferrari (Coleoptera: Curculionidae: Scolytinae) is a recent invader to Hawaii. To date, limited information regarding the seasonal phenology of this pest on the islands limits the implementation of integrated control strategies. As part of a coffee farmer training program, we monitored CBB flight activity in 15 coffee plantations (Kona and Kau Districts) over 10 mo with methanol-ethanol (3:1 ratio) baited traps. Concurrently, we quantified CBB infestation and penetration rates inside developing coffee berries through the end of harvest. Approximately 1 million CBB were captured, with the highest activity (e.g., >500 CBB/trap/wk) in December through February, coinciding with end of main regional harvesting periods. Relatively high activity (>250 CBB/trap/wk) was also observed during berry development, in May and June (Kona) and June and July (Kau). Field infestation rates were higher overall in Kau (9.6 ± 1.1%) compared with coffee plantations in Kona (4.7 ± 0.4%). Linear regression investigated relationships between CBB trap data and berry infestation rates. Trap catch data generally correlated better with the proportion of shallow entries (AB position) compared with deeper penetrations (CD position) or total infestation. Pearson correlation coefficients based on different parameters (i.e., region, altitude, and berry phenology) revealed positive and mostly significant correlations between these variables (R values 0.410 to 0.837). Timing peak flight activity of CBB with insecticide applications will help coffee growers improve pest control. The ability of trap data to calculate reliable economic (action) thresholds for the CBB is discussed.
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Sreng L, Temime-Roussel B, Wortham H, Mourre C. Chemical Identification of "Maternal Signature Odors" in Rat. Chem Senses 2017; 42:211-222. [PMID: 28007788 DOI: 10.1093/chemse/bjw124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Newborn altricial mammals need just after birth to locate their mother's nipples for suckling. In this precocious behavior, including for the human baby, maternal odor via the olfactory process plays a major role. Maternal odor emitted by lactating females or by amniotic fluid (AF) attracts pups, but the chemical identity of this attractant has not yet been elucidated. Here, using behavioral tests and gas chromatography coupled with mass spectrometry (GC-MS) techniques, we show that AF extracts from rat pregnant female, nipples, ventral skin, milk, and nest extracts of mother contained 3-6 active substances. AF extracts contained 3 active compounds: ethylbenzene, benzaldehyde, and benzyl alcohol, and their mixture in similar proportions to those found in AF extracts, in a ratio, respectively, of 1:1:12 (700 ng), attracts pups as putative maternal attractant substances (MAS). These 3 AF substances have already been identified in milk, nipples, ventral wash, and nest extracts of mother, but not in feces. Moreover, anethole flavor incorporated in pregnant rat and mother's diet is also detected in AF, nipples, milk, and nest extracts and the pups are attracted to anethole odor, but not in the case of the no-anethole pups. MAS, combined with diet flavors present in the AF bath, represent olfactory signals as "maternal signature odors" (MSO) that are learned by fetus and pups. These findings open the way to improved understanding of the neurobiology of early olfactory learning and of the importance of evolutionarily conserved survival behavior in many mammal species.
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Affiliation(s)
- Leam Sreng
- Aix-Marseille Univ, CNRS, IMBE UMR 7263 (Institut Méditerranéen de la Biodiversité et d'Ecologie marine et continentale), IRD, Avignon Université, Faculté Saint Charles, 3, place Victor Hugo, Case 36 F-13331 Marseille cedex 03, France
| | - Brice Temime-Roussel
- Aix-Marseille Univ, CNRS, LCE, Laboratoire de Chimie et Environnement, UMR 7376, Case 29, Faculté Saint Charles, 3, place Victor Hugo, F-13331 Marseille cedex 03, France and
| | - Henri Wortham
- Aix-Marseille Univ, CNRS, LCE, Laboratoire de Chimie et Environnement, UMR 7376, Case 29, Faculté Saint Charles, 3, place Victor Hugo, F-13331 Marseille cedex 03, France and
| | - Christiane Mourre
- Aix-Marseille Univ, CNRS, Laboratoire de Neurosciences Cognitives, UMR 7291, Faculté Saint Charles, 3, place Victor Hugo, Case 36, F-13331 Marseille cedex 03, France
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Integrated Pest Management of Coffee Berry Borer: Strategies from Latin America that Could Be Useful for Coffee Farmers in Hawaii. INSECTS 2016; 7:insects7010006. [PMID: 26848690 PMCID: PMC4808786 DOI: 10.3390/insects7010006] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/19/2016] [Accepted: 01/25/2016] [Indexed: 11/16/2022]
Abstract
The coffee berry borer (CBB), Hypothenemus hampei Ferrari (Coleoptera: Curculionidae: Scolytinae) is the primary arthropod pest of coffee plantations worldwide. Since its detection in Hawaii (September 2010), coffee growers are facing financial losses due to reduced quality of coffee yields. Several control strategies that include cultural practices, biological control agents (parasitoids), chemical and microbial insecticides (entomopathogenic fungi), and a range of post-harvest sanitation practices have been conducted to manage CBB around the world. In addition, sampling methods including the use of alcohol based traps for monitoring CBB populations have been implemented in some coffee producing countries in Latin America. It is currently unclear which combination of CBB control strategies is optimal under economical, environmental, and sociocultural conditions of Hawaii. This review discusses components of an integrated pest management program for CBB. We focus on practical approaches to provide guidance to coffee farmers in Hawaii. Experiences of integrated pest management (IPM) of CBB learned from Latin America over the past 25 years may be relevant for establishing strategies of control that may fit under Hawaiian coffee farmers’ conditions.
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Green PWC, Davis AP, Cossé AA, Vega FE. Can Coffee Chemical Compounds and Insecticidal Plants Be Harnessed for Control of Major Coffee Pests? JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9427-9434. [PMID: 26458882 DOI: 10.1021/acs.jafc.5b03914] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Pests and pathogens threaten coffee production worldwide and are difficult to control using conventional methods, such as insecticides. We review the literature on the chemistry of coffee, concentrating on compounds most commonly reported from Coffea arabica and Coffea canephora. Differences in chemistry can distinguish coffee species and varieties, and plants grown under different biogeographic conditions exhibit different chemotypes. A number of chemical groups, such as alkaloids and caffeoylquinic acids, are known to be insecticidal, but most studies have investigated their effects on coffee quality and flavor. More research is required to bridge this gap in knowledge, so that coffee can be bred to be more resistant to pests. Furthermore, we report on some pesticidal plants that have been used for control of coffee pests. Locally sourced pesticidal plants have been underutilized and offer a sustainable alternative to conventional insecticides and could be used to augment breeding for resilience of coffee plants.
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Affiliation(s)
- Paul W C Green
- Royal Botanic Gardens , Kew, Richmond, Surrey TW9 3AB, United Kingdom
| | - Aaron P Davis
- Royal Botanic Gardens , Kew, Richmond, Surrey TW9 3AB, United Kingdom
| | - Allard A Cossé
- Crop Bioprotection Research Unit, National Center for Agricultural Utilization Research, ARS, U.S. Department of Agriculture , 1815 North University Street, Peoria, Illinois 61604, United States
| | - Fernando E Vega
- Sustainable Perennial Crops Laboratory, ARS, U.S. Department of Agriculture , Beltsville, Maryland 20705, United States
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Pérez J, Infante F, Vega FE. A Coffee Berry Borer (Coleoptera: Curculionidae: Scolytinae) Bibliography. JOURNAL OF INSECT SCIENCE (ONLINE) 2015; 15:83. [PMID: 26136496 PMCID: PMC4535578 DOI: 10.1093/jisesa/iev053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 05/18/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Jeanneth Pérez
- El Colegio de la Frontera Sur (ECOSUR), Carretera Antiguo Aeropuerto km 2.5, Tapachula, 30700 Chiapas, México
| | - Francisco Infante
- El Colegio de la Frontera Sur (ECOSUR), Carretera Antiguo Aeropuerto km 2.5, Tapachula, 30700 Chiapas, México
| | - Fernando E Vega
- Sustainable Perennial Crops Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD 20705, USA
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Njihia TN, Jaramillo J, Murungi L, Mwenda D, Orindi B, Poehling HM, Torto B. Spiroacetals in the colonization behaviour of the coffee berry borer: a 'push-pull' system. PLoS One 2014; 9:e111316. [PMID: 25380135 PMCID: PMC4224388 DOI: 10.1371/journal.pone.0111316] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 09/29/2014] [Indexed: 11/18/2022] Open
Abstract
Coffee berries are known to release several volatile organic compounds, among which is the spiroacetal, conophthorin, an attractant for the coffee berry borer Hypothenemus hampei. Elucidating the effects of other spiroacetals released by coffee berries is critical to understanding their chemo-ecological roles in the host discrimination and colonization process of the coffee berry borer, and also for their potential use in the management of this pest. Here, we show that the coffee berry spiroacetals frontalin and 1,6-dioxaspiro [4.5] decane (referred thereafter as brocain), are also used as semiochemicals by the coffee berry borer for host colonization. Bioassays and chemical analyses showed that crowding coffee berry borers from 2 to 6 females per berry, reduced borer fecundity, which appeared to correlate with a decrease in the emission rates of conophthorin and frontalin over time. In contrast, the level of brocain did not vary significantly between borer- uninfested and infested berries. Brocain was attractive at lower doses, but repellent at higher doses while frontalin alone or in a blend was critical for avoidance. Field assays with a commercial attractant comprising a mixture of ethanol and methanol (1 ∶ 1), combined with frontalin, confirmed the repellent effect of this compound by disrupting capture rates of H. hampei females by 77% in a coffee plantation. Overall, our results suggest that the levels of frontalin and conophthorin released by coffee berries determine the host colonization behaviour of H. hampei, possibly through a 'push-pull' system, whereby frontalin acts as the 'push' (repellent) and conophthorin acting as the 'pull' (attractant). Furthermore, our results reveal the potential use of frontalin as a repellent for management of this coffee pest.
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Affiliation(s)
- Teresiah Nyambura Njihia
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
- Department of Horticulture, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Juliana Jaramillo
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
- Institute for Horticultural Production Systems - Plant Protection, Leibniz University Hannover, Hannover, Germany
- * E-mail:
| | - Lucy Murungi
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
- Department of Horticulture, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Dickson Mwenda
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Benedict Orindi
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Hans-Michael Poehling
- Institute for Horticultural Production Systems - Plant Protection, Leibniz University Hannover, Hannover, Germany
| | - Baldwyn Torto
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
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Sun X, Zhou W, Liu H, Zhang A, Ai CR, Zhou SS, Zhou CX, Wang MQ. Transgenic Bt rice does not challenge host preference of the target pest of rice leaffolder, Cnaphalocrocis medinalis (Lepidoptera: Pyralidae). PLoS One 2013; 8:e79032. [PMID: 24244410 PMCID: PMC3823965 DOI: 10.1371/journal.pone.0079032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 09/17/2013] [Indexed: 11/20/2022] Open
Abstract
Background Transgenic Bt rice line T2A-1 expresses a synthesized cry2A gene that shows high resistance to Lepidoptera pests, including Cnaphalocrocis medinalis (Guenée) (Lepidoptera: Pyralidae). Plant volatile orientation cues and the physical characteristics of the leaf surface play key roles in host location or host-plant acceptance of phytophagous insects. These volatile compounds and physical traits may become altered in Bt rice and it is not known whether this influences the behavior of C. medinalis when searching for oviposition sites. Results The results of electronic nose analysis showed that the Radar map of Bt rice cultivars was analogous to the non- Bt rice cultivars at each growing stage. PCA analysis was able to partly discriminate between some of the Bt vs. non-Bt rice sensors, but could not to separate Bt cultivars from non-Bt cultivars. The total ion chromatogram between Bt and non-Bt rice cultivars at the seedling, booting and tillering stages were similar and 25 main compounds were identified by GC-MS. For most compounds, there was no significant difference in compound quantities between Bt and non-Bt rice cultivars at equivalent growth stages. The densities of the tubercle papicles and the trichomes on the upper and lower surfaces were statistically equal in Bt and non-Bt rice. The target pest, C. medinalis, was attracted to host rice plants, but it could not distinguish between the transgenic and the isogenic rice lines. Conclusions There were no significant differences between the Bt rice line, T2A-1 and the non-Bt rice for volatiles produced or in its physical characteristics and there were no negative impacts on C. medinalis oviposition behavior. These results add to the mounting evidence that Bt rice has no negative impact on the target insect oviposition behavior.
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Affiliation(s)
- Xiao Sun
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Wen Zhou
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Hao Liu
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Aijun Zhang
- Invasive Insect Biocontrol and Behavior Laboratory, United States Department of Agriculture-Agricultural Research Service, Beltsville, Maryland, United States of America
| | - Chao-Ren Ai
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Shuang-Shuang Zhou
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Chang-Xiang Zhou
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Man-Qun Wang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
- * E-mail:
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Jaramillo J, Torto B, Mwenda D, Troeger A, Borgemeister C, Poehling HM, Francke W. Coffee berry borer joins bark beetles in coffee klatch. PLoS One 2013; 8:e74277. [PMID: 24073204 PMCID: PMC3779205 DOI: 10.1371/journal.pone.0074277] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 07/30/2013] [Indexed: 11/24/2022] Open
Abstract
Unanswered key questions in bark beetle-plant interactions concern host finding in species attacking angiosperms in tropical zones and whether management strategies based on chemical signaling used for their conifer-attacking temperate relatives may also be applied in the tropics. We hypothesized that there should be a common link in chemical signaling mediating host location by these Scolytids. Using laboratory behavioral assays and chemical analysis we demonstrate that the yellow-orange exocarp stage of coffee berries, which attracts the coffee berry borer, releases relatively high amounts of volatiles including conophthorin, chalcogran, frontalin and sulcatone that are typically associated with Scolytinae chemical ecology. The green stage of the berry produces a much less complex bouquet containing small amounts of conophthorin but no other compounds known as bark beetle semiochemicals. In behavioral assays, the coffee berry borer was attracted to the spiroacetals conophthorin and chalcogran, but avoided the monoterpenes verbenone and α-pinene, demonstrating that, as in their conifer-attacking relatives in temperate zones, the use of host and non-host volatiles is also critical in host finding by tropical species. We speculate that microorganisms formed a common basis for the establishment of crucial chemical signals comprising inter- and intraspecific communication systems in both temperate- and tropical-occurring bark beetles attacking gymnosperms and angiosperms.
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Affiliation(s)
- Juliana Jaramillo
- Institute of Plant Diseases and Plant Protection, Leibniz University Hannover, Hannover, Germany
- International Center of Insect Physiology and Ecology (icipe), Nairobi, Kenya
- * E-mail:
| | - Baldwyn Torto
- International Center of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Dickson Mwenda
- International Center of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Armin Troeger
- Institute of Organic Chemistry, University of Hamburg, Hamburg, Germany
| | | | - Hans-Michael Poehling
- Institute of Plant Diseases and Plant Protection, Leibniz University Hannover, Hannover, Germany
| | - Wittko Francke
- Institute of Organic Chemistry, University of Hamburg, Hamburg, Germany
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Ukeh DA, Woodcock CM, Pickett JA, Birkett MA. Identification of Host Kairomones from Maize, Zea mays, for the Maize Weevil, Sitophilus zeamais. J Chem Ecol 2012; 38:1402-9. [DOI: 10.1007/s10886-012-0191-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2011] [Revised: 09/14/2012] [Accepted: 09/21/2012] [Indexed: 10/27/2022]
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