The apple sawfly, Hoplocampa testudinea: egg development and forecasting of egg hatch

Autor:	B. Graf, H. U. Höpli, Heinrich Höhn
Rok vydání:	2002
Předmět:	Larva biology Phenology Hatching biology.organism_classification Sawfly Horticulture Insect Science Botany Hoplocampa testudinea Instar PEST analysis Tenthredinidae Ecology Evolution Behavior and Systematics
Zdroj:	Entomologia Experimentalis et Applicata. 105:55-60
ISSN:	1570-7458 0013-8703
DOI:	10.1046/j.1570-7458.2002.01032.x
Popis:	The effect of temperature on egg development of the apple sawfly Hoplocampa testudinea Klug was studied under controlled conditions. Based on a linear model describing the relationship between temperature and developmental rates a thermal threshold of 6.9 °C and a thermal constant of 85 day-degrees were established. The experimental results were used to expand and parameterise an existing phenology model to include egg development and hatching of first instar larvae. The model thus became a valuable forecasting tool not only for adult emergence and the optimal monitoring period but also for egg hatch and the best timing of control measures against first instar larvae. The model was validated by comparing predictions with independent observations on egg-laying and subsequent hatching of first instar larvae under semi-field conditions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9e3ec01c28178f2f7bebd9f0ca00cf8b https://doi.org/10.1046/j.1570-7458.2002.01032.x Zobrazit plný text záznamu Plný text