Ferrisia virgata （Cockerell） is a post with wide distribution and broad range of host plants, but apparently it has not yet known to be an important post in China. Survey on pests of longan （Dimocarpus longgana Lou...Ferrisia virgata （Cockerell） is a post with wide distribution and broad range of host plants, but apparently it has not yet known to be an important post in China. Survey on pests of longan （Dimocarpus longgana Lour. ） in Zhangjiang of Guangdong Province in 2011 found that F. virgata had caused serious damage on production of longan. The paper first reported damage status of F. virgata on longan and also preliminarily introduced field identification characterlstics and host plants of F. virgata reported.展开更多
Rastrococus invadens was the only reported mealybug species on the mango tree in Western Burkina Faso. This study aimed at carrying out the inventory and showing the importance and distribution of other mealybug speci...Rastrococus invadens was the only reported mealybug species on the mango tree in Western Burkina Faso. This study aimed at carrying out the inventory and showing the importance and distribution of other mealybug species associated with the mango tree. It was also important to determine the periods of abundance of these species vis-a-vis R. invadens. For this purpose, the density of mealybugs was assessed in three study sites (Toussiana, Bérégadougou and Orodara) in Western Burkina Faso. The observations were made from June 2014 to June 2015 at a frequency of 15 ± 1 days. They focused on 20 leaves (5 leaves/cardinal point) levied on each mango tree. The species identified as Ferrisia virgata Cockerell and Icerya aegyptiaca Douglas were collected from mangos infested by R. invadens representing 98% - 99% of the density of the observed mealybug species. The periods of abundance of F. virgata and I. aegyptiaca were respectively the dry season and the rainy season. The effect of temperature, relative humidity and rainfall on the populations of F. virgata and I. aegyptiaca was also discussed. These results highlight the distribution range of F. virgata and I. aegyptiaca worldwide including Burkina Faso. R. invadens was the main mealybug species on mango in Burkina Faso in general and in the Western region of the country in particular.展开更多
<i>Rastrococus invadens</i> was the only reported mealybug species on the mango tree in Western Burkina Faso. This study aimed at carrying out the inventory and showing the importance and distribution of o...<i>Rastrococus invadens</i> was the only reported mealybug species on the mango tree in Western Burkina Faso. This study aimed at carrying out the inventory and showing the importance and distribution of other mealybug species associated with the mango tree. It was also important to determine the periods of abundance of these species vis-a-vis <i>R. invadens</i>. For this purpose, the density of mealybugs was assessed in three study sites (Toussiana, Bérégadougou and Orodara) in Western Burkina Faso. The observations were made from June 2014 to June 2015 at a frequency of 15 ± 1 days. They focused on 20 leaves (5 leaves/cardinal point) levied on each mango tree. The species identified as <i>Ferrisia virgata</i> Cockerell and <i>Icerya aegyptiaca</i> Douglas were collected from mangos infested by <i>R. invadens</i> representing 98% - 99% of the density of the observed mealybug species. The periods of abundance of <i>F. virgata</i> and <i>I. aegyptiaca</i> were respectively the dry season and the rainy season. The effect of temperature, relative humidity and rainfall on the populations of <i>F. virgata</i> and <i>I. aegyptiaca</i> was also discussed. These results highlight the distribution range of <i>F. virgata</i> and <i>I. aegyptiaca</i> worldwide including Burkina Faso. <i>R. invadens</i> was the main mealybug species on mango in Burkina Faso in general and in the Western region of the country in particular.展开更多
基金Supported by Special Project for National Litchi and Longan Industrial Technology System (CARS-33)
文摘Ferrisia virgata （Cockerell） is a post with wide distribution and broad range of host plants, but apparently it has not yet known to be an important post in China. Survey on pests of longan （Dimocarpus longgana Lour. ） in Zhangjiang of Guangdong Province in 2011 found that F. virgata had caused serious damage on production of longan. The paper first reported damage status of F. virgata on longan and also preliminarily introduced field identification characterlstics and host plants of F. virgata reported.
文摘Rastrococus invadens was the only reported mealybug species on the mango tree in Western Burkina Faso. This study aimed at carrying out the inventory and showing the importance and distribution of other mealybug species associated with the mango tree. It was also important to determine the periods of abundance of these species vis-a-vis R. invadens. For this purpose, the density of mealybugs was assessed in three study sites (Toussiana, Bérégadougou and Orodara) in Western Burkina Faso. The observations were made from June 2014 to June 2015 at a frequency of 15 ± 1 days. They focused on 20 leaves (5 leaves/cardinal point) levied on each mango tree. The species identified as Ferrisia virgata Cockerell and Icerya aegyptiaca Douglas were collected from mangos infested by R. invadens representing 98% - 99% of the density of the observed mealybug species. The periods of abundance of F. virgata and I. aegyptiaca were respectively the dry season and the rainy season. The effect of temperature, relative humidity and rainfall on the populations of F. virgata and I. aegyptiaca was also discussed. These results highlight the distribution range of F. virgata and I. aegyptiaca worldwide including Burkina Faso. R. invadens was the main mealybug species on mango in Burkina Faso in general and in the Western region of the country in particular.
文摘<i>Rastrococus invadens</i> was the only reported mealybug species on the mango tree in Western Burkina Faso. This study aimed at carrying out the inventory and showing the importance and distribution of other mealybug species associated with the mango tree. It was also important to determine the periods of abundance of these species vis-a-vis <i>R. invadens</i>. For this purpose, the density of mealybugs was assessed in three study sites (Toussiana, Bérégadougou and Orodara) in Western Burkina Faso. The observations were made from June 2014 to June 2015 at a frequency of 15 ± 1 days. They focused on 20 leaves (5 leaves/cardinal point) levied on each mango tree. The species identified as <i>Ferrisia virgata</i> Cockerell and <i>Icerya aegyptiaca</i> Douglas were collected from mangos infested by <i>R. invadens</i> representing 98% - 99% of the density of the observed mealybug species. The periods of abundance of <i>F. virgata</i> and <i>I. aegyptiaca</i> were respectively the dry season and the rainy season. The effect of temperature, relative humidity and rainfall on the populations of <i>F. virgata</i> and <i>I. aegyptiaca</i> was also discussed. These results highlight the distribution range of <i>F. virgata</i> and <i>I. aegyptiaca</i> worldwide including Burkina Faso. <i>R. invadens</i> was the main mealybug species on mango in Burkina Faso in general and in the Western region of the country in particular.
