Migratory locust (Locusta migratoria)
Migratory locust (Locusta migratoria) | |
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Migratory locust | |
Taxonomy | |
Family: | Acrididae |
Subfamily: | Oedipodinae |
Genus: | Locusta |
Additional resources | |
Full taxonomy at OSF |
The migratory locust (Locusta migratoria) is a notorious agricultural pest and the most widely distributed grasshopper species in the world[1]. It is present across the entire temperate and the tropics of the Eastern Hemisphere. In China, records of the migratory locust plagues go back to 200 BC. Today it is the second most important locust pest (after the desert locust) and one of the most important agricultural pests in Russia, Kazakhstan, and Uzbekistan.
Nomenclature
Locusta migratoria (Linnaeus, 1758). For full nomenclature, see this taxon's page on Orthoptera Species File
Recent finding shows only two true subspecies: Asian migratory locust, L. migratoria migratoria (Linnaeus, 1758) and African migratory locust, L. migratoria migratorioides (Reiche and Fairmaire, 1849) [2]
Identification
Distinctive for its large size, absence of prosternal tubercule, and smoky colored wings at the apex (radial sector) and black veins in the anal sector. In profile, the pronotum is high for solitary adults and saddle-shaped for gregarious. The transversal furrow is well marked for gregarious individuals. [3]
Unique features: Dark mouth, hairy underside of thorax. Its large size, clear rear wing, and raised thorax profile distinguish it from the Australian plague locust. Clear rear wing, lighter tibia, strongly marked forewings (compared to mottled), and flatter thorax profile, distinguish it from similar yellow-winged locust.[4] Compare photos
Phase | Stage | Color | Wings | Legs |
---|---|---|---|---|
Gregarious | nymph | Orange and black in later instars. Dark stripe from antenna through eye at a 45 degree angle, becomes horizontal before fading into the thorax, which has a small but prominent dark spot. Two oblique dark bands on rear femur. | ||
Gregarious | immature adult | |||
Gregarious | mature adult | bluish body with a yellow head and legs | Folded forewings are dark with thin light markings. Hind wings are clear, smoky at the apex (radial sector) and distinct black anal veins [1] |
|
Solitarious | nymph | Green but grey in the 1st instar. Dark stripe from antenna through eye at a 45 degree angle, becomes horizontal before fading into the thorax, which has a small but prominent dark spot. Two oblique dark bands on rear femur. | ||
Solitarious | immature adult | |||
Solitarious | adult | usually brown or green (sometimes yellowish-green or grey) | Folded forewings are dark with thin light markings. Hind wings are clear, smoky at the apex (radial sector) and distinct black anal veins [1] |
Additional information
Male body length: varying from 35 to 50 mm
Female body length: 45 to 55 mm
Head (in profile): slightly lower than the thorax but both head and thorax are raised above the wing line.
Mandibles: blue, dark mouth
Elytra (the outer tough pair of wings) are reflective and long: 43.5-56.0 (males), 49.0-61.0 mm (females), clearly protruding past the abdominal area [3]
Hind femora color: brownish, bluish to black on bottom internal side [3]
Hind femur length: 22.0-26.0 mm (males) and 20.0-32.0 mm (females). Relatively long in solitarious individuals [3]
Hind tibia color: yellowish, beige or red [3]
Identification resources
Distribution
The migratory locust has the largest global distribution of all locusts and grasshoppers. It is present in all temperate and tropical regions of the Eastern hemisphere. The southern edge of the coniferous forest of Eurasia marks its northern limit and it extends as far as South as New Zealand. It can be found from the Azores in the West to Fiji in the East. [1]
Their presence in a variety of climates and environmental conditions resulted in the assumption of many subspecies. However, Ma et al. (2012) conducted a phylogeographic analysis and divided populations into just two lineages: the Northern lineage of the Eurasian continent Asian migratory locust, L. migratoria migratoria (Linnaeus, 1758) and the Southern lineage, African migratory locust, L. migratoria migratorioides (Reiche and Fairmaire, 1849), spanning Africa, southern Europe, the Arabian region, India, southern China, South-east Asia and Australia. L. m. migratorioides is distributed in Africa south of the Sahara and the offshore Atlantic islands. For more information and distribution records see [GBIF]
In China, records of the migratory locust outbreaks go back to 200 BC and are associated with droughts and flood events. [5] The Asian migratory locust is one of the most important agricultural pests in Russia, Kazhakhstan, and Uzbekistan. [6] Populations in Australia are more recent, starting in 1973, when an important outbreak occurred in the Central Highlands district of Queensland. Before then it was an uncommon species of the coastal and subcoastal region with a few scattered records from inland. [7]
For more information and distribution records see [GBIF]
Biology
Habitat and ecology
L. migratoria are common in areas of periodic flooding such as river deltas, coastal plains, and along lakes where they breed in wet grassland areas on light soils. [6] [8] Wet seasons (or years) following dry seasons can lead to population build up and the aggregation of locusts on drying soil or grasses. This mosaic of patchy vegetation has been attributed to the onset of gregarization. [6]
The Food and Agriculture Organization (FAO) lists permanent habitat areas of L. m. migratoria in the Russian Federation, Kazakhstan, and China with specific breeding hot spots in Balkhash-Alakol lakes, Amu Darya river and, more recently Northern Caspian and Dagestan regions.
The migratory locust L. m. migratoria is univoltine (having one brood or generation per year) but can have up to five generations per year in tropical zones under favorable conditions. Oviposition occurs in August-September and the eggs over winter. Each female can produce at least 1-3 egg pods (up to 5 in southern localities and with warm conditions) with an average of 60-80 eggs per pod.[3] Light sandy soils are preferred for egg laying. Egg pod is large, slightly bent, 50-85 mm in length, 7-10 mm in diameter; eggs are 7-8 mm long.[3] Hatching (completed in 4-5 days) takes place between early May and early June. There are 5 hopper instars, 7-8 days for each, and the total hopper development lasts 35-40 days. Adults emerge in June to early July, in warm areas they can remain as late as November. Mating starts 2-4 weeks after fledging, and females start laying eggs 2-3 weeks later (usually at the end of July). [3]
Almost all sub-Saharan countries are in the invasion zone of the African migratory locust (L. m. migratorioides) outbreaks. [3] The Niger River flood plains in Mali are the main African breeding area and to a lesser extent, Lake Chad basin, and the Blue Nile region in Sudan. [9] Four to five generations annually are possible in the Middle Niger and can form plagues in the area and surrounding Sahelian steppes. [1] The African migratory locust favors grasses Ctenium elegans, Cenchrus biflorus, Eragrostis tremula and 10–15% bare ground for breeding in the late rainy season. [8]
Gregarization is a slower process for the migratory locust relative to the desert locust. After 64 hours of crowding these locusts are only partially gregarized. [10] [11] [12]
Land-use change
Historically, the migratory locust was not present in the drylands of the Sahara Desert however, agricultural expansion and human induced vegetation changes, particularly through the introduction of irrigation, has made for a more hospitable habitat and increased populations in this area. [16] [17]
Population upsurges have been seen in new areas due to rapid agricultural development of expansive cereal summer crops.[8] In the Sahel, shifting agricultural land has left plots abandoned with bare areas that still support millet, sorghum, and Cenchrus biflorus which are favored host plants. [8]
Outbreaks have been reported in Mali, Chad, Sudan and Madagascar.[18]
Pest status
Polyphagous but mainly graminivorous, preferring grasses such as Panicum sp. Phragmites communis, Artemisia sp. and Polygonum [8] Agricultural damages usually concern cereals (barley, millet, corn, maize, oats, rice, sugar cane, teff grass, wheat, also bamboo and sugar cane. Other plants when grasses are not available, like banana, pineapple leaves, and palms. [1]
Recent outbreaks
In January - June 2021, an outbreak of migratory locusts infested more than 48,000 hectares of land in the Grand Sud, Madagascar. [19]
In 2020, Southern African countries launched an emergency response to outbreaks of the African migratory locust which, according to the Food and Agriculture Organization of the United Nations (FAO), threatened the food security and livelihoods of millions of people in Botswana, Namibia, Zambia, and Zimbabwe.[20]
ZAMBIA: African Migratory Locust FAO FLASH UPDATE – 26 October 2020
Madagascar 2014 - View photos of the outbreak here https://www.flickr.com/photos/faoemergencies/albums/72157644348724287/with/14228170412/
Media coverage
2012 Madagascar locust crisis [21]
Name | Year published | Resource link | Descriptive keyword | Language | Geographic purview | Author | Year published |
---|---|---|---|---|---|---|---|
"Biblical plague" of locusts ruins crops in Tulcea | 2022 | View URL | Media article, Locust outbreaks | English | Romania | Romania Insider | 2022 |
Besieged by locusts, South Africa's farmers fight back | View URL | Media article, Locust outbreaks | English | BBC News | |||
Explainer: what's behind the locust swarms damaging crops in southern Africa | 2020 | View URL | Media article, Locust outbreaks, Locusts, Outbreaks, Infestations, Rainfall, Weather, Climate change, Agriculture, Ecology, Biology, Behavior, Education, General locust education, Monitoring, Chemical control
|
English | The Conversation | 2020 | |
Locust outbreaks threaten food security in southern Africa | View URL | Press release, Media article, Newsletter, Locust outbreaks, Locusts, Outbreaks, Infestations, Crop health, Food security, Livelihoods, Emergency response, Community development, Management | English | Food and Agriculture Organization of the United Nations | |||
Locust Plague Devours 40,000 Tonnes of Vegetation | 2022 | View URL | General locust education, Video | English | Madagascar | BBC News | 2022 |
Locusts now threatening parts of southern Africa, UN says | 2020 | View URL | Media article, Locust outbreaks, Outbreaks, Locusts, Infestations, Crop health, Agriculture, Pesticides, Spraying, Chemical control, Environmental assessment, Management, Integrated pest management | English | phys.org | 2020 | |
On the frontlines: Battling Namibia’s worst locust crisis | 2021 | View URL | Newsletter, Media article, Locust outbreaks, Locusts, Outbreaks, Infestations, Livelihoods, Food security, Crop health, Integrated pest management, Chemical control, Spraying, Governance, Community development, Collective movement, Grazing, Livestock
|
English | Namibia | United Nations | 2021 |
Organisation des Nations Unies pour l'alimentation et l'agriculture | View URL | Newsletter, Outbreaks, Locusts, Locust outbreaks, Emergency response, Management, Integrated pest management, Advocacy, Advisory note, Food security, Livelihoods, Agriculture, Rainfall, Crop health | French | Food and Agriculture Organization of the United Nations | |||
Villagers In Sumba Chase Away Migratory Locusts With Loud Noises | 2022 | View URL | Video, Locust outbreaks, Locusts, Outbreaks, Infestations, Management, Mechanical control, Spraying, Pesticides, Chemical control, Governance, Agriculture, Crop health | English | SEA Today News | 2022 |
Organizations associated with the migratory locust
Organization name | Acronym | Website | Type | Focus | Focus keywords | Geographic purview |
---|---|---|---|---|---|---|
Australian Government Department of Agriculture Fisheries and Forestry | View URL | Government | Information Hub | Australia | ||
Australian National University | ANU | View URL | University | Research | Australia | |
Australian Plague Locust Commission | APLC | View URL | Government | Management, Research, Governance | Agricultural development, Control, Coordination, Education, Emergency assistance, Forecasting, Funding, Governance, Information hub, International development, Media, Monitoring, Policy, Regional cooperation, Research, Sustainable development, Technology, Training, Natural sciences | Australia |
Australian Research Council | ARC | View URL | Government | Funding | Australia | |
Center of Excellence in Biodiversity and Natural Resource Management | CoEB | View URL | University | Agricultural development, Community development, Research, Sustainable development, Technology, Training | Rwanda | |
Department of Primary Industries and Regional Development | DPI WA | View URL | Government | Management | Monitoring, Control, Forecasting, Training | Australia |
Department of Primary Industries and Regions | PIRSA | View URL | Government | Management, Development, Information Hub | Control, Sustainable development | Australia |
FAO Locust Watch Locusts in Caucasus and Central Asia | CCA | View URL | Intergovernmental Organization | Education, Information Hub, Governance | Training, Regional cooperation, Monitoring, Control, Policy, Forecasting | Afghanistan, Armenia, Azerbaijan, Georgia (country), Kazakhstan, Tajikistan, Turkmenistan, Uzbekistan, Russian Federation, Kyrgyzstan |
FAO Plant Production and Protection Division | NSP | View URL | Intergovernmental Organization | Information Hub | Agricultural development, Community development, Emergency assistance, Forecasting, Regional cooperation, Sustainable development, Training, Natural sciences | |
FAO Regional Office for Asia and the Pacific | APPPC | View URL | Intergovernmental Organization | Information Hub, Governance, Education | Training, Regional cooperation, Policy | Afghanistan, Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Japan, Malaysia, Maldives, Mongolia, Nepal, Pakistan, Philippines, Russian Federation, Singapore, Sri Lanka, Thailand, Australia, Cook Islands, Fiji, France, Kiribati, Marshall Islands, Nauru, New Zealand, Niue, Palau, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, United States of America, Vanuatu, Viet Nam, Laos, Myanmar, Iran, Brunei Darussalam, South Korea, North Korea
|
FAO Subregional Office for Southern Africa | SFS | View URL | Intergovernmental Organization | Development, Management, Governance | Angola, Botswana, Comoros, Lesotho, Madagascar, Malawi, Mauritius, Mozambique, Namibia, Seychelles, South Africa, Eswatini, Tanzania, Zambia, Zimbabwe | |
Global Locust Initiative | GLI | View URL | University | Research, Education, Information Hub | Sustainable development, Ecology, Nutrition, Social science, Natural sciences, Agriculture, Agroecology, Biology, Behavior, Biological control, Climate change, Education, Sustainability science, Geometric framework, Grazing, Governance, Food security, Arts and humanities, Land use management, Landscape ecology, Locusts, Migration, Phase polyphenism, Phenotypic plasticity, Soil science | United States of America, Senegal, Australia, China, Argentina, Bolivia, Paraguay, Uruguay, Mali |
Higher Institute of Agronomic Sciences of Chott Mariem | View URL | University, Government | Agricultural development, Control, Education | Tunisia | ||
Land Care Australia | LCA | View URL | Government | Funding | Australia | |
Ministry of Agriculture Sudan | View URL | Government | Agricultural development | Sudan | ||
Ministry of Agriculture, Water and Land Reform | MAWLR | View URL | Government | Management | Monitoring | Namibia |
Queensland Department of Agriculture and Fisheries | QLD DPI | View URL | Government | Management | Monitoring, Control, Forecasting, Natural sciences | Australia |
Shah Abdul Latif University Khairpur | View URL | University | Education, Research | Natural sciences | Pakistan | |
Southern African Development Community | SADC | View URL | Intergovernmental Organization | Development, Funding, Governance | Agricultural development, Coordination | |
The French Agricultural Research Centre for International Development | CIRAD | View URL | Government | Education, Development, Research, Management | Forecasting, International development, Training, Agricultural development, Sustainable development, Natural sciences, Modeling, Monitoring, Research, Control, Community development | France |
Resources
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 COPR (1982). The Locust and Grasshopper Agricultural Manual. London: Overseas Pest Research. 449.
- ↑ Ma C, Yang P, Jiang F, Chapuis M-P, Shali Y, Sword GA, Kang L (2012) Mitochondrial genomes reveal the global phylogeography and dispersal routes of the migratory locust: GLOBAL PHYLOGEOGRAPHY OF THE MIGRATORY LOCUST. Molecular Ecology 21: 4344–4358. https://doi.org/10.1111/j.1365-294X.2012.05684.x
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 FAO (2019) Asian Migratory Locust (LMI). Asian Migratory Locust (LMI) | Locust Watch in Caucasus and Central Asia. Available from: http://www.fao.org/locusts-cca/bioecology/asian-migratory-locust-lmi/en/ (November 18, 2019).
- ↑ APLC https://www.agriculture.gov.au/pests-diseases-weeds/locusts/about/id-guide/description_of_adults/3_migratory_locust_locusta_migratoria (accessed April 30, 2021)
- ↑ Stige LC, Chan K-S, Zhang Z, Frank D, Stenseth NC (2007) Thousand-year-long Chinese time series reveals climatic forcing of decadal locust dynamics. Proceedings of the National Academy of Sciences U.S.A. 104, 16188–16193. doi:10.1073/pnas.0706813104
- ↑ 6.0 6.1 6.2 Latchininsky AV (2013) Locusts and remote sensing: a review. Journal of Applied Remote Sensing 7: 075099. https://doi.org/10.1117/1.JRS.7.075099
- ↑ Farrow R A (1979) Causes of Recent Changes in the Distribution and Abundance of the Migratory Locust (Locusta migratoria L.) in Australia in Relation to Plagues.
- ↑ 8.0 8.1 8.2 8.3 8.4 Le Gall M, Overson R, Cease A (2019) A global review on locusts (Orthoptera: Acrididae) and their interactions with livestock grazing practices. Frontiers in Ecology and Evolution 7: 263. https://doi.org/10.3389/fevo.2019.00263
- ↑ Balança G, Gay P-E, Rachadi T, Lecoq M, Balanca G (1999a) Interpretation of Recent Outbreaks of the Migratory Locust Locusta migratoria migratorioides (Reiche and Fairmaire, 1850) [Orthoptera, Acrididae] in Lake Chad Basin According to Rainfall Data. Journal of Orthoptera Research: 83. https://doi.org/10.2307/3503430
- ↑ Guo W, Wang X, Ma Z, Xue L, Han J, Yu D (2011) CSP and takeout genes modulate the switch between attraction and repulsion during behavioral phase change in the migratory locust. PLoS Genet. 7:e1001291. doi:10.1371/journal.pgen.1001291
- ↑ Ma Z, Guo W, Guo X, Wang X, Kang L (2011) Modulation of behavioral phase changes of the migratory locust by the catecholamine metabolic pathway. Proceedings of the National Academy of Sciences U.S.A. 108: 3882–3887. doi:10.1073/pnas.1015098108
- ↑ Ma Z, Guo X, Lei H, Li T, Hao S, Kang L (2015) Octopamine and tyramine respectively regulate attractive and repulsive behavior in locust phase changes. Sci. Rep. 5:8036. doi:10.1038/srep08036
- ↑ Uvarov B (1966) Grasshoppers and Locusts: A Handbook of General Acridology. 1. Anatomy, Physiology, Development, Phase Polymorphism, Introduction to Taxonomy. Cambridge: University Press.
- ↑ Uvarov B (1977) Grasshoppers and Locusts. A Handbook of General Acridology Vol. 2. Behaviour, Ecology, Biogeography, Population Dynamics. Cambridge: Centre for Overseas Pest Research.
- ↑ Pener M P and Simpson SJ (2009) “Locust phase polyphenism: an update,” in Advances in Insect Physiology, eds S. J. Simpson and M. P. Pener (London:Academic Press), 1–272. doi:10.1016/S0065-2806(08)36001-9
- ↑ Benfekih L, Chara B, Doumandji-Mitiche B (2002) Influence of anthropogenic impact on the habitats and swarming risks of Dociostourus morocconus and Locusto migratoria (Orthoptera, Acrididae) in the Algerian Sahara and the semiarid zone. Journal of Orthoptera Research 11: 243–250. https://doi.org/10.1665/1082-6467(2002)011[0243:IOAIOT]2.0.CO;2
- ↑ Benfekih L, Petit D (2010) The annual cycle of Saharan populations of Locusta migratoria cinerascens (Orthoptera: Acrididae: Oedipodinae) in Algeria. Annales de la Société entomologique de France (N.S.) 46: 351–358. https://doi.org/10.1080/00379271.2010.10697674
- ↑ Farrow RA (1987) Effects of changing land use on outbreaks of tropical migratory locust, Locusta migratoria migratorioides (R. and F.). International Journal of Tropical Insect Science, 8 969–975. doi:10.1017/S1742758400023262
- ↑ OCHA Madagascar: Grand Sud Humanitarian Snapshot (August 2021) file:///Users/miraword/Downloads/Madagascar_20210827_GrandSud_HumanitarianSnapshot%20(1).pdf
- ↑ FAO Regional Office for Africa. (September 4, 2020) Locust outbreaks threaten food security in southern Africa. http://www.fao.org/africa/news/detail-news/en/c/1306167/
- ↑ Anon FAO and the locust crisis in Madagascar : FAO in Emergencies. Available from: http://www.fao.org/emergencies/crisis/madagascar-locust/intro/en/ (November 20, 2019).
Additional Papers
Hunter DM, Strong K, Spurgin PA (1998) Management of Populations of the Spur-Throated Locust, Austracris guttulosa (Walker), and Migratory Locust, Locusta migratoria (L.) (Orthoptera: Acrididae), in Eastern Australia during 1996 and 1997. Journal of Orthoptera Research: 173–178. https://doi.org/10.2307/3503515
Lomer CJ, Bateman RP, Johnson DL, Langewald J, Thomas M (2001) BIOLOGICAL CONTROL OF LOCUSTS AND GRASSHOPPERS. Annual Review of Entomology 46: 667–702. https://doi.org/10.1146/annurev.ento.46.1.667
Steedman A (1990) Other African locusts. In: Locust Handbook. Natural Resources Institute, Chatham, 204.
Bei-Bienko G.Ya. 1932. A manual of locust survey. Leningrad: Upravlenie Sluzhby ucheta Gos. OBV Narkozema SSSR. 159 pp.
Bei-Bienko G.Ya., Mishchenko L.L. 1951. Locusts of the fauna of the USSR and adjacent countries. Keys to Fauna of USSR, N38, parts I & II. Moscow & Leningrad: AN SSSR. 668 pp.
Latchininsky A.V., Sergeev M.G., Childebaev M.K., Chernyakhovsky M.E., Lockwood J.A.,
Kambulin V.E., Gapparov F.A. 2002. Locusts of Kazakhstan, Central Asia and adjacent territories. Larami: Association for Applied Akridology International, University of Wyoming. 387 pp.
Mishchenko L.L. 1952. Locusts (Catantopinae). Fauna of the USSR. Orthopterous insects. Leningrad: AN SSSR. V. 4(2): 610.
Qing, Y. Q. L. Z. L., and Chunxian, Y. G. F. C. J. (2008). Feeding habits and economic threshold of Locusta migratoria tibetensis. Acta Phytophylac. Sin. 5.
Sergeev M.G. 1986. Regularities in distribution of orthopterous insects of Northern Asia. Novosibirsk: Nauka. 238 pp.
Tanaka, S., and Zhu, D.-H. (2005). Outbreaks of the migratory locust Locusta migratoria (Orthoptera: Acrididae) and control in China. Appl. Entomol. Zool. 40, 257–263. doi: 10.1303/aez.2005.257
Tsyplenkov E.P. 1970. Locust pests in the USSR. Leningrad: Kolos. 272 pp.
Wang, Xian-Hui, and Le Kang. "Differences in egg thermotolerance between tropical and temperate populations of the migratory locust Locusta migratoria (Orthoptera: Acridiidae)." Journal of Insect Physiology 51.11 (2005): 1277-1285.