High temperatures and their effects on plants and bees

Abstract

The analysis of the effect of high ambient temperatures on entomophilous plants and honey bees is carried out.The research of the species composition of entomophilous plants, the timing of their flowering, of the temperature peaks during the summer was conducted in accordance with the conditions of the Fergana region, Uzbekistan. The ethological behavior of bees at high temperatures was carried out at Holosiivska educational and research apiary of NULES of Ukraine. Trere were used generally accepted methods at experiments. According to the research results, the maximum ambient temperatures for Fergana, Uzbekistan were determined. It is established that according to conditions of the Fergana region of Uzbekistan, honey plants and bees are most exposed to high temperatures during the second half of summer. It was analyzed the species variety of entomophilous plants of the Fergana Valley.The most common species of plants by areas of their dissemination have been identified.Plants are grouped in each zone, subject to influence of high temperatures during their flowering period.The effects of heat on the flight activity of worker bees and their behavior are determined. During the day, under the influence of high temperatures, the bees of the families did not show the same activity to flying. They actively fly off in the morning. As the temperature increased, the number of departures was decreased. This often happened from 11 a.m. to 6 p.m. During this period, the aggressiveness of bees in the colonies increased. They more often visited drinking bowls and brought water. In addition, bees actively ventilated the nests. Some of them opened the nest and hung on the walls of the hive.Under prolonged exposure of high temperatures, worker bees hung in bunches on the walls of the hive even at night. This behavior of bees lasted until the temperature dropped to 28 C and below.Given to the negative impact of global warming on flora and fauna, it is increase the importance of honey bees as part of the biocenosis of wildlife, the likelihood of extinction of many species of plants and animals. It is concluded that it is necessary to improve the ecology, to deep research related to the effects of high temperatures on honey bees and entomophytic plants.