Search

Your search keyword '"Franck, Pierre"' showing total 331 results
Start Over Author "Franck, Pierre"
331 results on '"Franck, Pierre"'

1. Best organic farming expansion scenarios for pest control: a modeling approach

Author

Delattre, Thomas, Memah, Mohamed-Mahmoud, Franck, Pierre, Valsesia, Pierre, and Lavigne, Claire

Subjects
Archaeology, CC1-960, Science
Abstract

Organic Farming (OF) has been expanding recently in response to growing consumer demand and as a response to environmental concerns. The area under OF is expected to further increase in the future. The effect of OF expansion on pest densities in organic and conventional crops remains difficult to predict because OF expansion impacts Conservation Biological Control (CBC), which depends on the surrounding landscape (i.e. both the crop mosaic and semi-natural habitats). In order to understand and forecast how pests and their biological control may vary during OF expansion, we modeled the effect of spatial changes in farming practices on population dynamics of a pest and its natural enemy. We investigated the impact on pest density and on predator to pest ratio of three contrasted scenarios aiming at 50% organic fields through the progressive conversion of conventional fields. Scenarios were 1) conversion of Isolated conventional fields first (IP), 2) conversion of conventional fields within Groups of conventional fields first (GP), and 3) Random conversion of conventional field (RD). We coupled a neutral spatially explicit landscape model to a predator-prey model to simulate pest dynamics in interaction with natural enemy predators. The three OF expansion scenarios were applied to nine landscape contexts differing in their proportion and fragmentation of semi-natural habitat. We further investigated if the ranking of scenarios was robust to pest control methods in OF fields and pest and predator dispersal abilities. We found that organic farming expansion affected more predator densities than pest densities for most combinations of landscape contexts and OF expansion scenarios. The impact of OF expansion on final pest and predator densities was also stronger in organic than conventional fields and in landscapes with large proportions of highly fragmented semi-natural habitats. Based on pest densities and the predator to pest ratio, our results suggest that a progressive organic conversion with a focus on isolated conventional fields (scenario IP) could help promote CBC. Careful landscape planning of OF expansion appeared most necessary when pest management was substantially less efficient in organic than in conventional crops, and in landscapes with low proportion of semi-natural habitats.

Published
2023
Full Text
View/download PDF

5. A global synthesis reveals biodiversity-mediated benefits for crop production.

Author

Dainese, Matteo, Martin, Emily A, Aizen, Marcelo A, Albrecht, Matthias, Bartomeus, Ignasi, Bommarco, Riccardo, Carvalheiro, Luisa G, Chaplin-Kramer, Rebecca, Gagic, Vesna, Garibaldi, Lucas A, Ghazoul, Jaboury, Grab, Heather, Jonsson, Mattias, Karp, Daniel S, Kennedy, Christina M, Kleijn, David, Kremen, Claire, Landis, Douglas A, Letourneau, Deborah K, Marini, Lorenzo, Poveda, Katja, Rader, Romina, Smith, Henrik G, Tscharntke, Teja, Andersson, Georg KS, Badenhausser, Isabelle, Baensch, Svenja, Bezerra, Antonio Diego M, Bianchi, Felix JJA, Boreux, Virginie, Bretagnolle, Vincent, Caballero-Lopez, Berta, Cavigliasso, Pablo, Ćetković, Aleksandar, Chacoff, Natacha P, Classen, Alice, Cusser, Sarah, da Silva E Silva, Felipe D, de Groot, G Arjen, Dudenhöffer, Jan H, Ekroos, Johan, Fijen, Thijs, Franck, Pierre, Freitas, Breno M, Garratt, Michael PD, Gratton, Claudio, Hipólito, Juliana, Holzschuh, Andrea, Hunt, Lauren, Iverson, Aaron L, Jha, Shalene, Keasar, Tamar, Kim, Tania N, Kishinevsky, Miriam, Klatt, Björn K, Klein, Alexandra-Maria, Krewenka, Kristin M, Krishnan, Smitha, Larsen, Ashley E, Lavigne, Claire, Liere, Heidi, Maas, Bea, Mallinger, Rachel E, Martinez Pachon, Eliana, Martínez-Salinas, Alejandra, Meehan, Timothy D, Mitchell, Matthew GE, Molina, Gonzalo AR, Nesper, Maike, Nilsson, Lovisa, O'Rourke, Megan E, Peters, Marcell K, Plećaš, Milan, Potts, Simon G, Ramos, Davi de L, Rosenheim, Jay A, Rundlöf, Maj, Rusch, Adrien, Sáez, Agustín, Scheper, Jeroen, Schleuning, Matthias, Schmack, Julia M, Sciligo, Amber R, Seymour, Colleen, Stanley, Dara A, Stewart, Rebecca, Stout, Jane C, Sutter, Louis, Takada, Mayura B, Taki, Hisatomo, Tamburini, Giovanni, Tschumi, Matthias, Viana, Blandina F, Westphal, Catrin, Willcox, Bryony K, Wratten, Stephen D, Yoshioka, Akira, Zaragoza-Trello, Carlos, Zhang, Wei, and Zou, Yi

Subjects
Humans, Crops, Agricultural, Ecosystem, Biodiversity, Pest Control, Biological, Agriculture, Pollination, Crop Production, Crops, Agricultural, Pest Control, Biological
Abstract

Human land use threatens global biodiversity and compromises multiple ecosystem functions critical to food production. Whether crop yield-related ecosystem services can be maintained by a few dominant species or rely on high richness remains unclear. Using a global database from 89 studies (with 1475 locations), we partition the relative importance of species richness, abundance, and dominance for pollination; biological pest control; and final yields in the context of ongoing land-use change. Pollinator and enemy richness directly supported ecosystem services in addition to and independent of abundance and dominance. Up to 50% of the negative effects of landscape simplification on ecosystem services was due to richness losses of service-providing organisms, with negative consequences for crop yields. Maintaining the biodiversity of ecosystem service providers is therefore vital to sustain the flow of key agroecosystem benefits to society.

Published
2019

8. Crop pests and predators exhibit inconsistent responses to surrounding landscape composition.

Author

Karp, Daniel S, Chaplin-Kramer, Rebecca, Meehan, Timothy D, Martin, Emily A, DeClerck, Fabrice, Grab, Heather, Gratton, Claudio, Hunt, Lauren, Larsen, Ashley E, Martínez-Salinas, Alejandra, O'Rourke, Megan E, Rusch, Adrien, Poveda, Katja, Jonsson, Mattias, Rosenheim, Jay A, Schellhorn, Nancy A, Tscharntke, Teja, Wratten, Stephen D, Zhang, Wei, Iverson, Aaron L, Adler, Lynn S, Albrecht, Matthias, Alignier, Audrey, Angelella, Gina M, Zubair Anjum, Muhammad, Avelino, Jacques, Batáry, Péter, Baveco, Johannes M, Bianchi, Felix JJA, Birkhofer, Klaus, Bohnenblust, Eric W, Bommarco, Riccardo, Brewer, Michael J, Caballero-López, Berta, Carrière, Yves, Carvalheiro, Luísa G, Cayuela, Luis, Centrella, Mary, Ćetković, Aleksandar, Henri, Dominic Charles, Chabert, Ariane, Costamagna, Alejandro C, De la Mora, Aldo, de Kraker, Joop, Desneux, Nicolas, Diehl, Eva, Diekötter, Tim, Dormann, Carsten F, Eckberg, James O, Entling, Martin H, Fiedler, Daniela, Franck, Pierre, Frank van Veen, FJ, Frank, Thomas, Gagic, Vesna, Garratt, Michael PD, Getachew, Awraris, Gonthier, David J, Goodell, Peter B, Graziosi, Ignazio, Groves, Russell L, Gurr, Geoff M, Hajian-Forooshani, Zachary, Heimpel, George E, Herrmann, John D, Huseth, Anders S, Inclán, Diego J, Ingrao, Adam J, Iv, Phirun, Jacot, Katja, Johnson, Gregg A, Jones, Laura, Kaiser, Marina, Kaser, Joe M, Keasar, Tamar, Kim, Tania N, Kishinevsky, Miriam, Landis, Douglas A, Lavandero, Blas, Lavigne, Claire, Le Ralec, Anne, Lemessa, Debissa, Letourneau, Deborah K, Liere, Heidi, Lu, Yanhui, Lubin, Yael, Luttermoser, Tim, Maas, Bea, Mace, Kevi, Madeira, Filipe, Mader, Viktoria, Cortesero, Anne Marie, Marini, Lorenzo, Martinez, Eliana, Martinson, Holly M, Menozzi, Philippe, Mitchell, Matthew GE, Miyashita, Tadashi, Molina, Gonzalo AR, and Molina-Montenegro, Marco A

Subjects
Animals, Crops, Agricultural, Ecosystem, Pest Control, Biological, Models, Biological, agroecology, biodiversity, biological control, ecosystem services, natural enemies, Crops, Agricultural, Pest Control, Biological, Models
Abstract

The idea that noncrop habitat enhances pest control and represents a win-win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are measured. Here, we use a pest-control database encompassing 132 studies and 6,759 sites worldwide to model natural enemy and pest abundances, predation rates, and crop damage as a function of landscape composition. Our results showed that although landscape composition explained significant variation within studies, pest and enemy abundances, predation rates, crop damage, and yields each exhibited different responses across studies, sometimes increasing and sometimes decreasing in landscapes with more noncrop habitat but overall showing no consistent trend. Thus, models that used landscape-composition variables to predict pest-control dynamics demonstrated little potential to explain variation across studies, though prediction did improve when comparing studies with similar crop and landscape features. Overall, our work shows that surrounding noncrop habitat does not consistently improve pest management, meaning habitat conservation may bolster production in some systems and depress yields in others. Future efforts to develop tools that inform farmers when habitat conservation truly represents a win-win would benefit from increased understanding of how landscape effects are modulated by local farm management and the biology of pests and their enemies.

Published
2018

9. A model-based approach to assess the effectiveness of pest biocontrol by natural enemies

Author

Ciss, Mamadou, Poggi, Sylvain, Memmah, Mohamed-Mahmoud, Franck, Pierre, Gosme, Marie, Parisey, Nicolas, and Roques, Lionel

Subjects
Quantitative Biology - Populations and Evolution
Abstract

Main goal: The aim of this note is to propose a modeling approach for assessing the effectiveness of pest biocontrol by natural enemies in diversified agricultural landscapes including several pesticide-based management strategies. Our approach combines a stochastic landscape model with a spatially-explicit model of population dynamics. It enables us to analyze the effect of the landscape composition (proportion of semi-natural habitat, non-treated crops, slightly treated crops and conventionally treated crops) on the effectiveness of pest biocontrol. Effectiveness is measured through environmental and agronomical descriptors, measuring respectively the impact of the pesticides on the environment and the average agronomic productivity of the whole landscape taking into account losses caused by pests. Conclusions: The effectiveness of the pesticide, the intensity of the treatment and the pest intrinsic growth rate are found to be the main drivers of landscape productivity. The loss in productivity due to a reduced use of pesticide can be partly compensated by biocontrol. However, the model suggests that it is not possible to maintain a constant level of productivity while reducing the use of pesticides, even with highly efficient natural enemies. Fragmentation of the semi-natural habitats and increased crop rotation tend to slightly enhance the effectiveness of biocontrol but have a marginal effect compared to the predation rate by natural enemies. This note was written in the framework of the ANR project PEERLESS "Predictive Ecological Engineering for Landscape Ecosystem Services and Sustainability"(ANR-12-AGRO-0006).

Published
2016

11. A functional overview of conservation biological control

Author

Begg, Graham S., Cook, Samantha M., Dye, Richard, Ferrante, Marco, Franck, Pierre, Lavigne, Claire, Lövei, Gábor L., Mansion-Vaquie, Agathe, Pell, Judith K., Petit, Sandrine, Quesada, Nora, Ricci, Benoit, Wratten, Stephen D., and Birch, A.Nicholas E.

Published
2017
Full Text
View/download PDF

20. A chromosome-level genome assembly of Cydia pomonella provides insights into chemical ecology and insecticide resistance

Author

Wan, Fanghao, Yin, Chuanlin, Tang, Rui, Chen, Maohua, Wu, Qiang, Huang, Cong, Qian, Wanqiang, Rota-Stabelli, Omar, Yang, Nianwan, Wang, Shuping, Wang, Guirong, Zhang, Guifen, Guo, Jianyang, Gu, Liuqi (Aloy), Chen, Longfei, Xing, Longsheng, Xi, Yu, Liu, Feiling, Lin, Kejian, Guo, Mengbo, Liu, Wei, He, Kang, Tian, Ruizheng, Jacquin-Joly, Emmanuelle, Franck, Pierre, Siegwart, Myriam, Ometto, Lino, Anfora, Gianfranco, Blaxter, Mark, Meslin, Camille, Nguyen, Petr, Dalíková, Martina, Marec, František, Olivares, Jérôme, Maugin, Sandrine, Shen, Jianru, Liu, Jinding, Guo, Jinmeng, Luo, Jiapeng, Liu, Bo, Fan, Wei, Feng, Likai, Zhao, Xianxin, Peng, Xiong, Wang, Kang, Liu, Lang, Zhan, Haixia, Liu, Wanxue, Shi, Guoliang, Jiang, Chunyan, Jin, Jisu, Xian, Xiaoqing, Lu, Sha, Ye, Mingli, Li, Meizhen, Yang, Minglu, Xiong, Renci, Walters, James R., and Li, Fei

Published
2019
Full Text
View/download PDF

23. Conservation Biological Control of Codling Moth (Cydia pomonella): Effects of Two Aromatic Plants, Basil (Ocimum basilicum) and French Marigolds (Tagetes patula)

Author

Laffon, Ludivine, Bischoff, Armin, Gautier, Hélène, Gilles, Florent, Gomez, Laurent, Lescourret, Françoise, Franck, Pierre, Unité de recherche Plantes et Systèmes de Culture Horticoles (PSH), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), and Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS)

Subjects
mapple orchards, conservation biological control, [SDE]Environmental Sciences, parasitis, companion plants
Abstract

International audience; The addition of flowering companion plants within or around crop fields is a promising strategy to strengthen pest regulation by their natural enemies. Aromatic plants are frequently used as companion plants, but their effects on natural enemies remain unclear under field conditions. Here, we evaluated the effects of two aromatic plant species on the parasitism of the codling moth (Cydia pomonella) and the recruitment of predatory arthropods (spiders, earwigs) in a factorial field experiment. Apple trees were intercropped with basil (Ocimum basilicum), French marigolds (Tagetes patula), or ryegrass (Lolium perenne). The association between apple trees and O. basilicum increases codling moth parasitism, but does not affect arthropod predator abundances. Furthermore, we find a general negative effect of T. patula on arthropod diversities and abundances, including the pest and its natural enemies. Finally, changes in the parasitism rate and arthropod community structure due to the aromatic plants do not reduce codling moth density or associated apple damage. Further experiments are needed to determine the mechanisms involved in aromatic plant effects on pest repellence and on natural enemy recruitment (volatile organic compound composition, floral resource supply, or pest density dependence).

Published
2022
Full Text
View/download PDF

25. D1.9 Practice Abstracts 1

Author

Tran, Fanny, Hawes, Cathy, McHugh, Niamh, Humphrey-Ackumey, Seshi, Warlop, Francois, Franck, Pierre, Beyer, Marco, Salehi, Aliyeh, Friedel, Jurgen, Ablinger, Daniela, Starz, Walter, Kaasik, Riina, Veromann, Eve, and Bohnet, Iris

Abstract

Practice Abstracts will be produced at several time points focussing on case studies of best practice (with regional translations), summarising the key messages and practical advice in language adapted to target groups using the EIP-AGRI common format.

Published
2022
Full Text
View/download PDF

34. API-Tree oucomes: Pesticide-free methods to control apple pests, experimentation and performance

Author

Alaphilippe, Aude, Alins, Georgina, Borowiec, Nicolas, Fuente, Enrique, Dardouri, Tarek, Dekker, Teun, Ferrais, Louise, Franck, Pierre, Gautier, Hélène, Gardin, Pauline, Gomez, Laurent, Goutines, Caroline, Hance, Thierry, Jacquot, Maxime, Jordan, Marie-Odile, Kramer Jacobsen, Stine, Lateur, Marc, Lavigne, Claire, Miñarro, Marcos, Morel, Karine, Parveaud, Claude-Eric, Rosies, Blandine, Siegwart, Myriam, Sigsgaard, Lene, Simon, Sylvaine, Tasin, Marco, Vercken, Elodie, Unité Expérimentale de Recherches Intégrées en Production Fruitière (UERI), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and INRAE

Subjects
[SDV]Life Sciences [q-bio]
Published
2021
Full Text
View/download PDF

37. Genetic structure of Cydia pomonella populations in Argentina and Chile implies isolating barriers exist between populations

Author

Cichón, Liliana I., primary, Soleño, Jimena, additional, Garrido, Silvina A., additional, Guiñazú, Natalia, additional, Montagna, Cristina M., additional, Franck, Pierre, additional, Olivares, Jerome, additional, Musleh, Selim, additional, Rodríguez, Marcela A., additional, and Fuentes‐Contreras, Eduardo, additional

Published
2021
Full Text
View/download PDF

39. Sperm competition and last-male precedence in the honeybee

Author

Franck, Pierre, Solignac, Michel, Vautrin, Dominique, Cornuet, Jean-Marie, Koeniger, Gudrun, and Koeniger, Nikolaus

Subjects
Honeybee -- Behavior, Honeybee -- Research, Animal behavior -- Research, Zoology and wildlife conservation
Abstract

Researchers studied paternities in six honeybee, Apis mellifera, colonies headed by naturally mated queens. Results suggested that, if there is sperm competition in the honeybee, it does not significantly increase the fitness of the last inseminating drone.

Published
2002

45. A global synthesis reveals biodiversity-mediated benefits for crop production

Author

School of Plant and Environmental Sciences, Dainese, Matteo, Martin, Emily A., Aizen, Marcelo A., Albrecht, Matthias, Bartomeus, Ignasi, Bommarco, Riccardo, Carvalheiro, Luisa G., Chaplin-Kramer, Rebecca, Gagic, Vesna, Garibaldi, Lucas A., Ghazoul, Jaboury, Grab, Heather, Jonsson, Mattias, Karp, Daniel S., Kennedy, Christina M., Kleijn, David, Kremen, Claire, Landis, Douglas A., Letourneau, Deborah K., Marini, Lorenzo, Poveda, Katja, Rader, Romina, Smith, Henrik G., Tscharntke, Teja, Andersson, Georg K. S., Badenhausser, Isabelle, Baensch, Svenja, Bezerra, Antonio Diego M., Bianchi, Felix J. J. A., Boreux, Virginie, Bretagnolle, Vincent, Caballero-Lopez, Berta, Cavigliasso, Pablo, Cetkovic, Aleksandar, Chacoff, Natacha P., Classen, Alice, Cusser, Sarah, da Silva e Silva, Felipe D., de Groot, G. Arjen, Dudenhoeffer, Jan H., Ekroos, Johan, Fijen, Thijs, Franck, Pierre, Freitas, Breno M., Garratt, Michael P. D., Gratton, Claudio, Hipolito, Juliana, Holzschuh, Andrea, Hunt, Lauren, Iverson, Aaron L., Jha, Shalene, Keasar, Tamar, Kim, Tania N., Kishinevsky, Miriam, Klatt, Bjorn K., Klein, Alexandra-Maria, Krewenka, Kristin M., Krishnan, Smitha, Larsen, Ashley E., Lavigne, Claire, Liere, Heidi, Maas, Bea, Mallinger, Rachel E., Martinez Pachon, Eliana, Martinez-Salinas, Alejandra, Meehan, Timothy D., Mitchell, Matthew G. E., Molina, Gonzalo A. R., Nesper, Maike, Nilsson, Lovisa, O'Rourke, Megan E., Peters, Marcell K., Plecas, Milan, Potts, Simon G., Ramos, Davi de L., Rosenheim, Jay A., Rundlof, Maj, Rusch, Adrien, Saez, Agustin, Scheper, Jeroen, Schleuning, Matthias, Schmack, Julia M., Sciligo, Amber R., Seymour, Colleen, Stanley, Dara A., Stewart, Rebecca M., Stout, Jane C., Sutter, Louis, Takada, Mayura B., Taki, Hisatomo, Tamburini, Giovanni, Tschumi, Matthias, Viana, Blandina F., Westphal, Catrin, Willcox, Bryony K., Wratten, Stephen D., Yoshioka, Akira, Zaragoza-Trello, Carlos, Zhang, Wei, Zou, Yi, Steffan-Dewenter, Ingolf, School of Plant and Environmental Sciences, Dainese, Matteo, Martin, Emily A., Aizen, Marcelo A., Albrecht, Matthias, Bartomeus, Ignasi, Bommarco, Riccardo, Carvalheiro, Luisa G., Chaplin-Kramer, Rebecca, Gagic, Vesna, Garibaldi, Lucas A., Ghazoul, Jaboury, Grab, Heather, Jonsson, Mattias, Karp, Daniel S., Kennedy, Christina M., Kleijn, David, Kremen, Claire, Landis, Douglas A., Letourneau, Deborah K., Marini, Lorenzo, Poveda, Katja, Rader, Romina, Smith, Henrik G., Tscharntke, Teja, Andersson, Georg K. S., Badenhausser, Isabelle, Baensch, Svenja, Bezerra, Antonio Diego M., Bianchi, Felix J. J. A., Boreux, Virginie, Bretagnolle, Vincent, Caballero-Lopez, Berta, Cavigliasso, Pablo, Cetkovic, Aleksandar, Chacoff, Natacha P., Classen, Alice, Cusser, Sarah, da Silva e Silva, Felipe D., de Groot, G. Arjen, Dudenhoeffer, Jan H., Ekroos, Johan, Fijen, Thijs, Franck, Pierre, Freitas, Breno M., Garratt, Michael P. D., Gratton, Claudio, Hipolito, Juliana, Holzschuh, Andrea, Hunt, Lauren, Iverson, Aaron L., Jha, Shalene, Keasar, Tamar, Kim, Tania N., Kishinevsky, Miriam, Klatt, Bjorn K., Klein, Alexandra-Maria, Krewenka, Kristin M., Krishnan, Smitha, Larsen, Ashley E., Lavigne, Claire, Liere, Heidi, Maas, Bea, Mallinger, Rachel E., Martinez Pachon, Eliana, Martinez-Salinas, Alejandra, Meehan, Timothy D., Mitchell, Matthew G. E., Molina, Gonzalo A. R., Nesper, Maike, Nilsson, Lovisa, O'Rourke, Megan E., Peters, Marcell K., Plecas, Milan, Potts, Simon G., Ramos, Davi de L., Rosenheim, Jay A., Rundlof, Maj, Rusch, Adrien, Saez, Agustin, Scheper, Jeroen, Schleuning, Matthias, Schmack, Julia M., Sciligo, Amber R., Seymour, Colleen, Stanley, Dara A., Stewart, Rebecca M., Stout, Jane C., Sutter, Louis, Takada, Mayura B., Taki, Hisatomo, Tamburini, Giovanni, Tschumi, Matthias, Viana, Blandina F., Westphal, Catrin, Willcox, Bryony K., Wratten, Stephen D., Yoshioka, Akira, Zaragoza-Trello, Carlos, Zhang, Wei, Zou, Yi, and Steffan-Dewenter, Ingolf

Abstract

Human land use threatens global biodiversity and compromises multiple ecosystem functions critical to food production. Whether crop yield-related ecosystem services can be maintained by a few dominant species or rely on high richness remains unclear. Using a global database from 89 studies (with 1475 locations), we partition the relative importance of species richness, abundance, and dominance for pollination; biological pest control; and final yields in the context of ongoing land-use change. Pollinator and enemy richness directly supported ecosystem services in addition to and independent of abundance and dominance. Up to 50% of the negative effects of landscape simplification on ecosystem services was due to richness losses of service-providing organisms, with negative consequences for crop yields. Maintaining the biodiversity of ecosystem service providers is therefore vital to sustain the flow of key agroecosystem benefits to society.

Published
2019

46. Genetic structure of Cydiapomonella populations in Argentina and Chile implies isolating barriers exist between populations.

Author

Cichón, Liliana I., Soleño, Jimena, Garrido, Silvina A., Guiñazú, Natalia, Montagna, Cristina M., Franck, Pierre, Olivares, Jerome, Musleh, Selim, Rodríguez, Marcela A., and Fuentes‐Contreras, Eduardo

Subjects
CODLING moth, GENETIC variation, MICROSATELLITE repeats, PHYTOGEOGRAPHY, HOST plants, ORCHARDS
Abstract

The codling moth (Cydia pomonella (L.)) is an invasive pest of pome fruits introduced to the Americas in the 19–20th centuries. This pest is widespread on both sides of the Andes range separating Argentina and Chile. We performed an analysis of the population genetic variability and structure of C. pomonella in Argentina and Chile using 13 microsatellite markers and sampled C. pomonella from apple as the main host plant along its distribution area (approx. 1,800 km). A total of 22 locations (11 from Chile and 11 from Argentina) were sampled. Significant genetic differentiation was observed among samples from Argentina and Chile (FSC = 0.045) and between all localities (FST = 0.085). Significant isolation by distance (IBD) was found for each country and when samples from both sides of the Andes range were pooled, although a lower correlation coefficient was observed. The Mantel test showed that the geographic distance and highest altitude of the mountains between locations were significantly associated with the pairwise FST when samples from both sides of the Andes range were pooled. According to a Bayesian assignment test (STRUCTURE), samples from Argentina and Chile conformed to two distinct genetic clusters. Our results also suggest that the recent invasion of C. pomonella in the southernmost localities (Aysén Region in Chile and Santa Cruz Province in Argentina) originated in populations from the respective sides of the Andes range. Our results indicate a genetic exchange of C. pomonella within each country and significant genetic differentiation between countries, which could be explained by dispersal mediated by human activities related to fruit production within each country with little exchange between them. A possible explanation is that the Andes range could be a significant barrier for dispersal by flight, and quarantine barriers could prevent the movement of plant material or infested fruit between countries. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

49. Crop pests and predators exhibit inconsistent responses to surrounding landscape composition

Author

Karp, Daniel S., Chaplin-Kramer, Rebecca, Meehan, Timothy D., Martin, Emily A., DeClerck, Fabrice, Grab, Heather, Gratton, Claudio, Hunt, Lauren, Larsen, Ashley E., Martinez-Salinas, Alejandra, O'Rourke, Megan E., Rusch, Adrien, Poveda, Katja, Jonsson, Mattias, Rosenheim, Jay A., Schellhorn, Nancy A., Tscharntke, Teja, Wratten, Stephen D., Zhang, Wei, Iverson, Aaron L., Adler, Lynn S., Albrecht, Matthias, Alignier, Audrey, Angelella, Gina M., Anjum, Muhammad Zubair, Avelino, Jacques, Batary, Peter, Baveco, Johannes M., Bianchi, Felix J.J.A., Birkhofer, Klaus, Bohnenblust, Eric W., Bommarco, Riccardo, Brewer, Michael J., Caballero-López, Berta, Carrière, Yves, Carvalheiro, Luísa G., Cayuela, Luis, Centrella, Mary, Cetkovic, Aleksandar, Henri, Dominic Charles, Chabert, Ariane, Costamagna, Alejandro C., De la Mora, Aldo, De Kraker, Joop, Desneux, Nicolas, Diehl, Eva, Diekötter, Tim, Dormann, Carsten F., Eckberg, James O., Entling, Martin H., Fiedler, Daniela, Franck, Pierre, van Veen, Frank, Frank, Thomas, Gagic, Vesna, Garratt, Michael P.D., Getachew, Awraris, Gonthier, David J., Goodell, Peter B., Graziosi, Ignazio, Groves, Russell L., Gurr, Geoff M., Hajian-Forooshani, Zachary, Heimpel, George E., Herrmann, John D., Huseth, Anders S., Inclán, Diego J., Ingrao, Adam J., Iv, Phirun, Jacot, Katja, Johnson, Gregg A., Jones, Laura, Kaiser, Marina, Kaser, Joe M., Keasar, Tamar, Kim, Tania N., Kishinevsky, Miriam, Landis, Douglas A., Lavandero, Blas, Lavigne, Claire, Le Ralec, Anne, Lemessa, Debissa, Letourneau, Deborah K., Liere, Heidi, Lu, Yanhui, Lubin, Yael, Luttermoser, Tim, Maas, Bea, Mace, Kevi, Madeira, Felipe, Mader, Viktoria, Cortesero, Anne-Marie, Marini, Lorenzo, Martinez, Eliana, Martinson, Holly M., and Menozzi, Philippe

Subjects
F08 - Systèmes et modes de culture, H10 - Ravageurs des plantes
Abstract

The idea that noncrop habitat enhances pest control and represents a win–win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are measured. Here, we use a pest-control database encompassing 132 studies and 6,759 sites worldwide to model natural enemy and pest abundances, predation rates, and crop damage as a function of landscape composition. Our results showed that although landscape composition explained significant variation within studies, pest and enemy abundances, predation rates, crop damage, and yields each exhibited different responses across studies, sometimes increasing and sometimes decreasing in landscapes with more noncrop habitat but overall showing no consistent trend. Thus, models that used landscape-composition variables to predict pest-control dynamics demonstrated little potential to explain variation across studies, though prediction did improve when comparing studies with similar crop and landscape features. Overall, our work shows that surrounding noncrop habitat does not consistently improve pest management, meaning habitat conservation may bolster production in some systems and depress yields in others. Future efforts to develop tools that inform farmers when habitat conservation truly represents a win–win would benefit from increased understanding of how landscape effects are modulated by local farm management and the biology of pests and their enemies.

Published
2018

Catalog

Books, media, physical & digital resources
See catalog results