Factors affecting the emergence of <i>Hypothenemus hampei</i> (Coleoptera: Scolytidae) from coffee berries

Baker, Peter S.; Ley, C.; Balbuena, R.; Barrera, Juan F.

doi:10.1017/s000748530005166x

Cited by 53 publications

(58 citation statements)

References 5 publications

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“…Klein-Koch et al (1988) found that in a high rainfall zone of Ecuador (3300 mm year -1 ) more than 80% of bored berries fallen to the ground were rotted and with a very low population of borers; ripe and overripe berries were the most affected. Emergence of borers from infested berries at high humidities was also reported by Baker et al (1992b) to avoid problems of pathogens such as B. bassiana or to look for more suitable berries for reproduction. According to this it is feasible also to think that extreme climatic conditions or colonizing organisms could kill and/or remove borers from the infested berries.…”

Section: Resultsmentioning

confidence: 92%

Life table of Hypothenemus hampei (Ferrari) in relation to coffee berry phenology under Colombian field conditions

Ruiz-Cárdenas

Baker

2010

Sci. agric. (Piracicaba, Braz.)

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The overlap of generations of coffee berry borer (CBB), Hypothenemus hampei (Ferrari) under field conditions in countries like Colombia hinders the construction of life tables by the sampling of natural populations. In this paper, a field methodology to carry out regular measurements of CBB cohorts inside coffee berries of different ages until harvest, both in coffee trees and in infested berries placed on the ground, is developed and used to compare the life history parameters of CBB. Populations with berries at six ages in three experimental stations (without CBB control) and in a commercial farm in Colombia (with chemical CBB control regularly carried out) were used. The duration of the pre-oviposition period as well as the mortality and survival rates of founder females and the proportion of founders leaving infested berries were strongly influenced by the consistency of berries, with optimum conditions for CBB reproduction as from 120-150 days after flowering. No differences were found between stations for the number of CBB developmental stages; but they had larger values than the commercial farm. The latter also had more than twice the average rate of founders leaving infested berries recorded in the stations. Survival functions (cumulative probabilities of survival) for the pest differed among treatments and between the plant and ground micro-environments. Age of berries at infestation was positively related to the intrinsic rate of increase of borer population; whilst generation time and doubling time were inversely related. No differences were found between sites for the main demographic parameters of the pest. Key words: coffee berry borer, population parameters, integrated pest management Tabela de vida de Hypothenemus hampei (Ferrari) em relação à fenologia do fruto de café, sob condições de campo, na Colômbia RESUMO: A superposição de gerações da broca do café, Hypothenemus hampei (Ferrari) em condições de campo em países como a Colômbia dificulta a confecção de tabelas de vida pela amostragem de populações naturais. Desenvolveu-se uma metodologia de campo para realizar medições regulares de coortes da broca em frutos de café de diferentes idades até a colheita, tanto nas plantas quanto em frutos infestados colocados no solo. O método é usado para comparar parâmetros populacionais da praga em frutos de seis idades, em três estações experimentais (sem controle da praga) e em uma fazenda comercial (com controle químico da praga), na Colômbia. A duração do período de pre-oviposição, assim como as taxas de mortalidade e sobrevivência das fêmeas fundadoras e a proporção de fêmeas fundadoras que abandonaram frutos infestados foram fortemente influenciadas pela consistência dos frutos, com condições ótimas para a reprodução da praga a partir de 120-150 dias depois da floração. Não houve diferenças entre estações para o número de estágios de desenvolvimento da praga, mas os valores nestas foram maiores que na fazenda comercial. Esta última teve uma taxa de frutos abandonados duas vezes maior que a...

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Section: Resultsmentioning

confidence: 92%

Life table of Hypothenemus hampei (Ferrari) in relation to coffee berry phenology under Colombian field conditions

Ruiz-Cárdenas

Baker

2010

Sci. agric. (Piracicaba, Braz.)

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“…6). Rainfall triggers colonization flights of H. hampei females [63]–[64]; an effect that is enhanced by high temperatures in the plantation [64].…”

Section: Discussionmentioning

confidence: 99%

Climate Change or Urbanization? Impacts on a Traditional Coffee Production System in East Africa over the Last 80 Years

et al. 2013

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Global environmental changes (GEC) such as climate change (CC) and climate variability have serious impacts in the tropics, particularly in Africa. These are compounded by changes in land use/land cover, which in turn are driven mainly by economic and population growth, and urbanization. These factors create a feedback loop, which affects ecosystems and particularly ecosystem services, for example plant-insect interactions, and by consequence agricultural productivity. We studied effects of GEC at a local level, using a traditional coffee production area in greater Nairobi, Kenya. We chose coffee, the most valuable agricultural commodity worldwide, as it generates income for 100 million people, mainly in the developing world. Using the coffee berry borer, the most serious biotic threat to global coffee production, we show how environmental changes and different production systems (shaded and sun-grown coffee) can affect the crop. We combined detailed entomological assessments with historic climate records (from 1929–2011), and spatial and demographic data, to assess GEC's impact on coffee at a local scale. Additionally, we tested the utility of an adaptation strategy that is simple and easy to implement. Our results show that while interactions between CC and migration/urbanization, with its resultant landscape modifications, create a feedback loop whereby agroecosystems such as coffee are adversely affected, bio-diverse shaded coffee proved far more resilient and productive than coffee grown in monoculture, and was significantly less harmed by its insect pest. Thus, a relatively simple strategy such as shading coffee can tremendously improve resilience of agro-ecosystems, providing small-scale farmers in Africa with an easily implemented tool to safeguard their livelihoods in a changing climate.

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“…Extrinsic and intrinsic factors are known to motivate H. hampei females to abandon residual coffee fruits and colonize fresh fruits during the period between harvests (Baker et al 1992b, Mathieu et al 1997, Barrera et al 2006. Intrinsic, or physiological, factors include fecundity, nulliparousness, ßight muscle condition, and apparently, the borer diapause stage that occurs during the interharvest period (Ticheler 1961, Mansingh 1991, Mathieu et al 1997, Barrera et al 2006.…”

Section: Discussionmentioning

confidence: 99%

Morphology and Structural Changes in Flight Muscles of <I>Hypothenemus hampei</I> (Coleoptera: Curculionidae) Females

et al. 2011

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Factors affecting the emergence of Hypothenemus hampei (Coleoptera: Scolytidae) from coffee berries

Cited by 53 publications

References 5 publications

Life table of Hypothenemus hampei (Ferrari) in relation to coffee berry phenology under Colombian field conditions

Life table of Hypothenemus hampei (Ferrari) in relation to coffee berry phenology under Colombian field conditions

Climate Change or Urbanization? Impacts on a Traditional Coffee Production System in East Africa over the Last 80 Years

Morphology and Structural Changes in Flight Muscles of <I>Hypothenemus hampei</I> (Coleoptera: Curculionidae) Females

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