EJE, vol. 114 (2017)
Effect of temperature on rate of development, survival and adult longevity of Phthorimaea operculella (Lepidoptera: Gelechiidae)
Stefanos S. ANDREADIS, Christos G. SPANOUDIS, Georgia ZAKKA, Barbara ASLANIDOU, Sofia NOUKARI, Matilda SAVOPOULOU-SOULTANI
Eur. J. Entomol. 114: 35-41, 2017 | 10.14411/eje.2017.006
The potato tuberworm, Phthorimaea operculella Zeller (Lepidoptera: Gelechiidae), is a major pest of potato, Solanum tuberosum L. (Solanales: Solanaceae), both in the field and storehouses. The rate of development and survival of P. operculella, reared on potato tubers cv. Spunta at eight constant temperatures (17.5, 20, 22.5, 25, 27.5, 30, 32.5 and 35°C), were studied in the laboratory. The duration of development of the immature stages was recorded. Adult longevity was also recorded under the same conditions. Developmental time decreased significantly with increase in temperature within the range 17.5-32.5°C. No development occurred...
Book Review: Löbl I. & Löbl D. (eds) 2015: Catalogue of Palaearctic Coleoptera. Hydrophiloidea-Staphylinoidea. Vol. 2. Revised and updated edition.
Eur. J. Entomol. 114: 34, 2017 | 10.14411/eje.2017.005
Löbl I. & Löbl D. (eds) 2015: Catalogue of Palaearctic Coleoptera. Hydrophiloidea-Staphylinoidea. Vol. 2. Revised and updated edition. Brill, Leiden, Boston, xxvi + 1702 pp. ISBN 978-90-04-28992-5 (print book), ISBN 978-90-04-29685-5 (e-book). Price USD 245.00.
Assessing the efficiency of UV LEDs as light sources for sampling the diversity of macro-moths (Lepidoptera)
Marco INFUSINO, Gunnar BREHM, Carlo DI MARCO, Stefano SCALERCIO
Eur. J. Entomol. 114: 25-33, 2017 | 10.14411/eje.2017.004
Light trapping is the most widely used tool for determining the diversity of nocturnal Lepidoptera, but UV LEDs have yet to be used as light sources for the large-scale monitoring of Lepidoptera. We assessed the efficiency of this novel light source for sampling moths using a Heath type moth equipped with a strip of 150 high brightness UV LEDs (emission peak 398 nm, ~ 15 W) powered by a 12 V battery. We compared the number of individuals, the number of species and the Geometridae / Noctuidae ratio recorded for the samples collected using UV LED traps with those collected in two monitoring programs carried out in the same geographic region using two...
Polygalacturonase gene expression and enzymatic activity in salivary glands of laboratory reared and wild populations of Lygus lineolaris (Hemiptera: Miridae)
Daniel FLEMING, Natraj KRISHNAN, Fred MUSSER
Eur. J. Entomol. 114: 16-24, 2017 | 10.14411/eje.2017.003
Lygus lineolaris (Palisot de Beauvois, 1818) (tarnished plant bug) is a serious pest of cotton (Gossypium hirsutum L.) in the Delta region as compared to cotton in the Hills region of the state of Mississippi in USA. The reason for this is unclear but it was hypothesized that the plant cell wall degrading polygalacturonase enzyme system in the salivary glands of L. lineolaris from the Delta could be better adapted for cotton, which is grown more predominantly in the Delta region than in the Hills region. Expression analysis of three primary polygalacturonase genes (LlPG1, LlPG2 and LlPG3) was conducted in laboratory...
Abnormal development in larvae of Sesamia nonagrioides (Lepidoptera: Noctuidae) resulting from baculovirus-mediated overexpression of a JHE-related gene (SnJHER)
Dimitrios KONTOGIANNATOS, Luc SWEVERS, Anna KOURTI
Eur. J. Entomol. 114: 7-15, 2017 | 10.14411/eje.2017.002
The Mediterranean corn borer Sesamia nonagrioides (Lepidoptera: Noctuidae) has a unique and recently multiplied juvenile hormone esterase gene family (SnJHER) with particular transcriptional profiles and functional characteristics. Unlike conventional juvenile hormone esterase genes (JHEs), the SnJHER gene family seems to have been recently evolved from a common ancestral JHER gene. SnJHERs seem to be regulated by both ecdysone agonists and xenobiotics, while their real role in development remains to be exploited. In this study we transiently expressed the major SnJHER isoform in Bm5 and Hi5 cell lines. The...
Development and survival of the spruce bark beetle, Ips typographus (Coleoptera: Curculionidae: Scolytinae) at low temperatures in the laboratory and the field
Kristýna ©TEFKOVÁ, Jan OKROUHLÍK, Petr DOLE®AL
Eur. J. Entomol. 114: 1-6, 2017 | 10.14411/eje.2017.001
The European spruce bark beetle (Ips typographus) is a highly destructive pest of spruce monocultures. Adult spruce bark beetles are well-adapted to survive over winter however, the ability of sub-adult stages to overwinter has not been clearly established. The increase in average temperature recorded over the last three decades has resulted in an increase in voltinism by one generation, but due to insufficient time the last generation may not complete its development. It is crucial to investigate the survival and development of sub-adult stages at low temperatures in order to predict the effect of increased voltinism on the population dynamics...