Abstract
This research was conducted in 2019-2020 in the northern and southern administrative districts of the southern Kashkadarya province of Uzbekistan. This study on the distribution of coccinellides in agrobiocenoses has been conducted at different experimental periods. In the agrobiocenoses of Kashkadarya province, 5 subspecies of coccinellides (Scymninae, Chilocorinae, Coccidulinae, Epilachninae, and Coccinellinae), 8 tribes, and 31 species belonging to 22 genera were found. Experiments have shown that species belonging to the genera Chilocorus (Leach, 1875) are relatively rare species and are not considered specific species for cotton agrocenosis. Coccinella septempunctata was observed as the most common species. The eggs of Coccinella septempunctata were studied separately in this research. Wintering conditions in mountainous areas were also considered and particular attention was paid to the beneficial entomophagous species of coccinellides.
Highlights
The damage caused by pests has theoretical and practical significance
The study of the composition, number dynamics and interactions of biological species belonging to different taxonomic groups in agrocenoses is of great theoretical and practical importance in planning and effective organization of biological control measures against crop pests in agriculture, which in turn achieves optimal yields [3]
Introduced in the United States: Rodolia cardinalis (Mulsant, 1850); introduced from Europe in North and South America: Coccinella septempunctata (Linnaeus, 1758), Adalia bipunctata (Linnaeus, 1758), and Chilocorus bipustulatus (Lin5e); introduced from Australia: Harmonia axyridis (Pallas, 1773) - synonym: Leis axyridis Pallas; introduced in Abkhazia from Australia: R. cardinalis and Cryptolaemus montrouzieri (Mulsant, 1850); and, introduced from Assyria: Chornocorus (Chilocorus) species have been tested for biological control of agricultural pests and positive results have been reported [9,10,11,12,13]
Summary
The damage caused by pests has theoretical and practical significance. The study of the composition, number dynamics and interactions of biological species belonging to different taxonomic groups in agrocenoses is of great theoretical and practical importance in planning and effective organization of biological control measures against crop pests in agriculture, which in turn achieves optimal yields [3]. In this regard, the seasonal number dynamics of coccinellide species in agrocenoses in the Central Asian region, the density of distribution across the area and the factors influencing these indicators have not been fully studied [3, 4]. Introduced in the United States: Rodolia cardinalis (Mulsant, 1850); introduced from Europe in North and South America: Coccinella septempunctata (Linnaeus, 1758), Adalia bipunctata (Linnaeus, 1758), and Chilocorus bipustulatus (Lin5e); introduced from Australia: Harmonia axyridis (Pallas, 1773) - synonym: Leis axyridis Pallas; introduced in Abkhazia from Australia: R. cardinalis and Cryptolaemus montrouzieri (Mulsant, 1850); and, introduced from Assyria: Chornocorus (Chilocorus) species have been tested for biological control of agricultural pests and positive results have been reported [9,10,11,12,13]
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