Outbreaks of Acridoid Grasshoppers in the Republic of Tatarstan (Russia)
Data on the outbreaks of acridoid pests in the Republic of Tatarstan (Russia) from the 19th century to 2014 have been provided. The following acridoid species appear to be most harmful for crops: Italian locust (Calliptamus italicus) and migratory locust (Locusta migratoria). According to the Russia...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Kazan Federal University
2017-09-01
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| Series: | Учёные записки Казанского университета: Серия Естественные науки |
| Subjects: | |
| Online Access: | https://kpfu.ru/outbreaks-of-acridoid-grasshoppers-in-the_317554.html |
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| Summary: | Data on the outbreaks of acridoid pests in the Republic of Tatarstan (Russia) from the 19th century to 2014 have been provided. The following acridoid species appear to be most harmful for crops: Italian locust (Calliptamus italicus) and migratory locust (Locusta migratoria). According to the Russian Agricultural Center of the Republic of Tatarstan, local outbreaks of C. italicus have been registered in the Trans-Kama region (Tatarstan) since 2010. It has been found that the abundance of C. italicus in two districts of the Western Trans-Kama region (Al'keevskii and Alekseevskii districts) significantly exceeds the economic threshold of harmfulness, ranging from 26 to 36 ind./m2 on average. The maximum values of the E/F index (the ratio of elytron length to hind femur length) are above the threshold ones (1.4 for females and 1.42 for males), thereby corresponding to the swarm phase. Furthermore, data on the mass reproduction of flightless grasshopper (Podisma pedestris L.) in the “Chistye Luga” State Nature Reserve (Chistopol'skii district) on an island in the Sheshma River have been discussed. The abundance of P. pedestris was more than 30 ind./m2. Most individuals were long-winged males (wings are not found in the normal variant). This fact reaffirms that some populations of Podisma enhance their ability to migration under certain conditions. |
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| ISSN: | 2542-064X 2500-218X |