Winter temperature predicts prolonged diapause in pine processionary moth species across their geographic range
2019
Salman, Md Habibur Rahman | Bonsignore, Carmelo P. | El Fels, Ahmed El Alaoui | Giomi, Folco | Hodar, Jose A. | Laparie, Mathieu | Marini, Lorenzo | Merel, Cécile | Zalucki, Myron P. | Zamoum, Mohamed | Battisti, Andrea | Università degli Studi di Padova = University of Padua (Unipd) | Universita Mediterranea of Reggio Calabria [Reggio Calabria] | Université Cadi Ayyad [Marrakech] (UCA) | Universidad de Granada = University of Granada (UGR) | Unité de recherche Zoologie Forestière (URZF) ; Institut National de la Recherche Agronomique (INRA) | School of Biological Sciences ; The University of Queensland (UQ [All campuses : Brisbane, Dutton Park Gatton, Herston, St Lucia and other locations]) | Institut National de Recherche Forestière (INRF)
International audience
اظهر المزيد [+] اقل [-]إنجليزي. Prolonged diapause occurs in a number of insects and is interpreted as a way to evade adverse conditions. The winter pine processionary moths (Thaumetopoea pityocampa and Th. wilkinsoni) are important pests of pines and cedars in the Mediterranean region. They are typically univoltine, with larvae feeding across the winter, pupating in spring in the soil and emerging as adults in summer. Pupae may, however, enter a prolonged diapause with adults emerging one or more years later. We tested the effect of variation in winter temperature on the incidence of prolonged diapause, using a total of 64 individual datasets related to insect cohorts over the period 1964-2015 for 36 sites in seven countries, covering most of the geographic range of both species. We found high variation in prolonged diapause incidence over their ranges. At both lower and upper ends of the thermal range in winter, prolonged diapause tended to be higher than at intermediate temperatures. Prolonged diapause may represent a risk-spreading strategy to mitigate climate uncertainty, although it may increase individual mortality because of a longer exposure to mortality factors such as predation, parasitism, diseases or energy depletion. Climate change, and in particular the increase of winter temperature, may reduce the incidence of prolonged diapause in colder regions whereas it may increase it in warmer ones, with consequences for population dynamics.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique