Ecological Studies on the Apple Clearwing Moth Synanthedon myopaeformis Borkh. (Lepidoptera: Sesiidae) in Apple Orchards at Menoufia Governorate, Egypt.

Abstract

The seasonal abundance and population density of emerged moths of Synanthedon myopaeformis Borkh. (Lepidoptera : Sesiidae) from infested apple trees at Berket El Saba district, Menoufia governorate during 2015 and 2016 years exhibited that the emerged moths continued all year round where, nine emergence peaks were recorded throughout year months. The highest number of emerged moths was observed during the summer months (40.96% and 41.26% at 2015 and 2016 seasons, respectively) and the highest monthly percentage of emerged moths was recorded in August. The highest number of emerged moths were recorded at the basic stem region 0-50cm above the ground surface, while the least number of emerged moths was found at the height 150-200cm and there was significant positive correlation between minimum & maximum temperatures and number of emerged moths, while the correlation was negative between RH% and number of emerged moths. The obtained results indicated that the minimum & maximum temperatures and RH% were responsible for 71.67% and 73.71% of changes population during the successive periods at 2015 and 2016, respectively.

Apple Tree Borers at Menoufia, Egypt with Special Reference to the Phytochemical Changes and Their Relation to the Infestation with Synanthedon myopaeformis Borkh. (Lepidoptera: Sesiidae).

“…Previous ecological studies on Sy. myopaeformis Borkh (Batt & Abd El-Raheem, 2017), detected that the young apple trees (less than 4 years old) were not infested by the apple clearwing moth, however, the old trees (15-20 years old) were heavily attacked. These observations are consistent with (Brunner 1915, Kinawy 1981, Johnson 1993.…”

“…Apple trees, in Egypt and in most world countries are attacked by various insect pests. Aphids, Codling moth, Leopard Moth, Clearwing Moth, dogwood moth, scale insects, leafminers, leafrollers, jewel beetles and bark beetles are the main insect pests attacking fruit trees, including apple orchards (Blommers 1994, Abdel-Azim 1997, Pfammatter & Vuignier, 1998, Anonymous 1999, Brown et al 2008, Karaca et al 2010, Simon et al 2010, Hegazi et al 2010, Hegazi et al 2014, Batt & Abd El-Raheem 2017.…”

“…myopaeformis Borkh. (Lepidoptera: Sesiidae) is a serious pest in the apple orchards (Tertyshny 1995, Al-Antary et al 2004, Ateyyat 2005, Ateyyat 2006, Aurelian 2011, Batt and Abd El-Raheem 2017. The first and second instar larvae of the apple clearwing moth feed superficially within the bark whereas the older instar larvae feed on the vascular tissues between the bark and cambium.…”

“…(Bergh and Leskey 2003, Kain & straub2001, Aurelian 2011. Thus, several studies were carried out by many authors (Abd El-Kader & Zaklama 1971, Awadallah et al 1978, Tadros 1993, Tadros 1994a, 1994b, Girgis et al 1995, Abdel-Azim, 1997, Shehata et al1999, Tadros et al 2003, Batt & Abd El-Raheem 2017 which aimed to study the Ecology, Biology, monitoring and control of this dangerous pest.…”