Bioclimatic zonation and potential distribution of Spodoptera frugiperda (Lepidoptera: Noctuidae) in South Kivu Province
- PDF / 4,761,094 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 63 Downloads / 183 Views
(2020) 20:66 Cokola et al. BMC Ecol https://doi.org/10.1186/s12898-020-00335-1
Open Access
RESEARCH ARTICLE
Bioclimatic zonation and potential distribution of Spodoptera frugiperda (Lepidoptera: Noctuidae) in South Kivu Province, DR Congo Marcellin C. Cokola1,2* , Yannick Mugumaarhahama3,4, Grégoire Noël2, Espoir B. Bisimwa1,5, David M. Bugeme5, Géant B. Chuma1,4, Adrien B. Ndeko1 and Frédéric Francis2
Abstract Background: The fall Armyworm (FAW) Spodoptera frugiperda (JE Smith), is currently a devastating pest throughout the world due to its dispersal capacity and voracious feeding behaviour on several crops. A MaxEnt species distributions model (SDM) was developed based on collected FAW occurrence and environmental data’s. Bioclimatic zones were identified and the potential distribution of FAW in South Kivu, eastern DR Congo, was predicted. Results: Mean annual temperature (bio1), annual rainfall (bio12), temperature seasonality (bio4) and longest dry season duration (llds) mainly affected the FAW potential distribution. The average area under the curve value of the model was 0.827 demonstrating the model efficient accuracy. According to Jackknife test of variable importance, the annual rainfall was found to correspond to the highest gain when used in isolation. FAWs’ suitable areas where this pest is likely to be present in South Kivu province are divided into two corridors. The Eastern corridor covering the Eastern areas of Kalehe, Kabare, Walungu, Uvira and Fizi territories and the Western corridor covering the Western areas of Kalehe, Kabare, Walungu and Mwenga. Conclusions: This research provides important information on the distribution of FAW and bioclimatic zones in South Kivu. Given the rapid spread of the insect and the climatic variability observed in the region that favor its development and dispersal, it would be planned in the future to develop a monitoring system and effective management strategies to limit it spread and crop damage. Keywords: Bioclimatic zone, Potential distribution, Spodoptera frugiperda, MaxEnt model, Environmental variables Background The Fall Armyworm (FAW) Spodoptera frugiperda (J.E Smith 1797) is native to tropical and subtropical Americas [14, 20] and a major corn pest [30]. Its presence was first reported on the African continent in 2016 [20] and *Correspondence: [email protected] 1 Unit of Crop Sciences, Faculty of Agriculture and Environmental Sciences, Université Evangélique en Afrique, South Kivu, P.O Box: 3323, Bukavu, Democratic Republic of Congo Full list of author information is available at the end of the article
in Asia later on in 2018 [51, 52]. Whether FAW larvae is able to infest more than 80 crop species [18, 46], main damages were observed on grasses family (Poaceae) including corn, rice and sorghum [34]. Yield losses can reach up to 73% when 100% of the plants are infested with FAW [27]. According to Baudron et al. [5], maize infestation of 54.9% might have an impact on yield of approximately 12%. Due to its polyphagous feeding beh
Data Loading...
