Biological control of the coffee berry borer: Main natural enemies, control success, and landscape influence

Escobar-Ramírez, Selene; Graß, Ingo; Armbrecht, Inge; Tscharntke, Teja

doi:10.1016/j.biocontrol.2019.05.011

Cited by 51 publications

(43 citation statements)

References 59 publications

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“…The biggest pest threat to coffee species is the coffee berry borer ( Hypothenemus hampei ), an insect which burrows into the coffee fruit, laying its eggs inside. When the larvae hatch, they consume what is left of the berry, turning it rotten [ 17 ]. The insect damage is known to cause an increase in fungal infection [ 8 ].…”

Section: Optimal Climatic Conditions For Coffeementioning

confidence: 99%

A Review of Potential Impacts of Climate Change on Coffee Cultivation and Mycotoxigenic Fungi

et al. 2020

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Coffee is one of the most traded commodities in the world. It plays a significant role in the global economy, employing over 125 million people. However, it is possible that this vital crop is threatened by changing climate conditions and fungal infections. This paper reviews how suitable areas for coffee cultivation and the toxigenic fungi species of Aspergillus, Penicillium, and Fusarium will be affected due to climate change. By combining climate models with species distribution models, a number of studies have investigated the future distribution of coffee cultivation. Studies predict that suitable coffee cultivation area could drop by ~50% under representation concentration pathway (RCP) 6.0 by 2050 for both Arabica and Robusta. These findings agree with other studies which also see an altitudinal migration of suitable cultivation areas to cooler regions, but limited scope for latitudinal migration owing to coffee’s inability to tolerate seasonal temperature changes. Increased temperatures will see an overall increase in mycotoxin production such as aflatoxins, particularly in mycotoxigenic fungi (e.g., Aspergillus flavus) more suited to higher temperatures. Arabica and Robusta’s limited ability to relocate means both species will be grown in less suitable climates, increasing plant stress and making coffee more susceptible to fungal infection and mycotoxins. Information regarding climate change parameters with respect to mycotoxin concentrations in real coffee samples is provided and how the changed climate affects mycotoxins in non-coffee systems is discussed. In a few areas where relocating farms is possible, mycotoxin contamination may decrease due to the “parasites lost” phenomenon. More research is needed to include the effect of mycotoxins on coffee under various climate change scenarios, as currently there is a significant knowledge gap, and only generalisations can be made. Future modelling of coffee cultivation, which includes the influence of atmospheric carbon dioxide fertilisation and forest management, is also required; however, all indications show that climate change will have an extremely negative effect on future coffee production worldwide in terms of both a loss of suitable cultivation areas and an increase in mycotoxin contamination.

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Section: Optimal Climatic Conditions For Coffeementioning

confidence: 99%

A Review of Potential Impacts of Climate Change on Coffee Cultivation and Mycotoxigenic Fungi

et al. 2020

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“…Although ant diversity patterns in response to management intensity at the plot-scale (i.e. the farm) are well documented for coffee (Armbrecht et al, 2005;Philpott et al, 2006;Teodoro et al, 2010), patterns at multiple spatial scales and their relationship with crop management intensification and landscape heterogeneity are less clear (Escobar-Ramírez et al, 2019; but see de la Mora et al, 2013;Livingston et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Decrease in β‐diversity, but not in α‐diversity, of ants in intensively managed coffee plantations

Escobar-Ramírez

Tscharntke

Armbrecht

et al. 2020

Insect Conserv Diversity

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Local land‐use intensity and surrounding landscape complexity affect the diversity of local species. Ants are an important biocontrol agent of the coffee berry borer (CBB), the main coffee pest worldwide. Although intensification of coffee production and deforestation in the surrounding landscape may reduce ant diversity, α‐ and β‐diversity patterns of ants in coffee landscapes remain poorly understood. Ants foraging in coffee bushes were sampled, using tuna baits along an agricultural intensification gradient (forest, shaded coffee and sun coffee) in a Neotropical coffee landscape. We evaluated the differences in α and β components of ant richness, community differentiation and habitat specificity of ant communities, in response to land‐use type and the percentage of surrounding forest. We found that ant β‐diversity and community differentiation among plots were significantly reduced with coffee management intensity. The amount of forest border adjacent to coffee plantations did not affect α‐ or β‐diversity. Yet, ant habitat specificity in the forest increased with plots having greater amounts of forest border, although in sun coffee plantations, the opposite was found: plots with greater forest border decreased habitat specificity. We found that conserving forest at landscape scales enhanced β‐diversity, community differentiation and habitat specificity of ants in the forest. Loss of forest cover at landscape scales (i.e. predominance of sun coffee) may lead to biotic homogenisation of ant communities. In conclusion, landscape‐wide ant richness is important in terms of biological CBB control by conservation.

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“…Some landscape components can benefit insectivorous bird communities and mediate their contribution to pest control. For instance, semi-natural patches commonly enhance bird communities and pest control on agroecosystems (Escobar-Ramírez, Grass, Armbrecht, & Tscharntke, 2019). Also, larger natural habitat fragments often favor higher predation pressure by birds (Karp et al, 2013), being this pressure usually reduced with distance to the semi-natural patch (Henri et al, 2015; Jordani, Hasui, & da Silva, 2015).…”

Section: Introductionmentioning

confidence: 99%

Landscape drivers and effectiveness of pest control by insectivorous birds in a landscape-dominant woody crop

Martínez‐Núñez

Rey

Manzaneda

et al. 2020

Preprint

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Avian-mediated pest control is a significant ecosystem service with important economic implications. However, there is an overall paucity of experimental information about how landscape simplification affect its current level. Information on pest control by birds is missing in some permanent agroecosystems of worldwide importance, like olive orchards, that dominate vast areas in the Mediterranean region.We assess the effectiveness of insectivorous birds for controlling the two main pest insects in olive orchards and explore the effects of landscape complexity and distance to semi-natural patches on avian insectivore abundance and pest control. For this, we combine bird surveys with field experiments (branch exclusions and pest plasticine models) at the regional scale.Landscape heterogeneity increased the abundance and richness of insectivorous birds, which were also more abundant and diverse in semi-natural patches, compared to the farm olive matrix. Experiments evidenced that pest control by birds (measured as attack rates to plasticine models and pest damage) in the studied olive orchards is negligible, while pests were overall abundant and pest damage was high on most farms. This raises alarms about the status of avian pest control in this agroecosystem.Although landscape heterogeneity increased the abundance/richness of insectivorous birds, and favored some forest species, insectivorous bird abundance seems diluted in relation to prey availability in all landscapes. Thus, pest control by birds seems currently unsuccessful in olive orchards. Our results might be evidencing the loss of an ecosystem service due to a generalized massive decline of common and forest insectivorous birds.Key messageOlive orchards dominate extensive areas causing important landscape simplification.Insectivorous birds are more abundant in semi-natural patches within olive farms.Field experiments show a low impact of birds on olive pests and damage.Avian-mediated pest biocontrol seems diluted by limited suitable habitat for birds.Agri-environmental measures should focus on increasing landscape complexity.

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Biological control of the coffee berry borer: Main natural enemies, control success, and landscape influence

Cited by 51 publications

References 59 publications

A Review of Potential Impacts of Climate Change on Coffee Cultivation and Mycotoxigenic Fungi

A Review of Potential Impacts of Climate Change on Coffee Cultivation and Mycotoxigenic Fungi

Decrease in β‐diversity, but not in α‐diversity, of ants in intensively managed coffee plantations

Landscape drivers and effectiveness of pest control by insectivorous birds in a landscape-dominant woody crop

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