POPULATION ECOLOGY Effect of Different Pollens on Development, Survivorship and Reproduction of Euseius finlandicus (Acari: Phytoseiidae)
نویسندگان
چکیده
Development, imaginal survivorship, adult longevity and fecundity of the predatory phytoseiid mite Euseius (Amblyseius) finlandicus Oudemans reared on seven different plant pollens were determined in the laboratory. The rationale behind these experiments was to assess the nutritional value and the possible effect on development and population dynamics of the mite. Mites were kept individually on bean (Phaseolus vulgaris L.) leaf disks at 20 6 18C and a photoperiod of 16:8 (L:D) h, with a sufÞcient quantity of pollen of apple (Malus silvestris M.), pear (Pyrus communis L.), cherry (Prunus avium L.), peach (Prunus persica L.), apricot (Prunus armeniaca L.), walnut (Juglans regia L.), or poppy (Papaver rhoeas L.). Developmental time from neonate larva to adult emergencevariedbetween thedifferent pollens from6.03 to 6.62d for females and from5.46 to 6.14d formales. Survivorshipduring immaturedevelopmentvaried from67.2 to95.9%with the lowest value recorded on peach pollen. The average life span of adult females reared on the different pollens varied from 18.2 to 56.2 d, whereas the respective total fecundity ranged from 2.5 to 46.5 eggs per female. The estimated values of the intrinsic rate of increase (rm) varied from 0.012 to 0.150. The analysis of these results show that cherry, peach, apricot, walnut, and poppy pollens are of higher nutritional value for E. finlandicus than apple and pear pollens and thus may play an important role in the Þeld for sustaining and increasing the predatorÕs population.
منابع مشابه
معرفی و کلید شناسایی 21 گونه از کنه‌های شکارگر فیتوزئیده (Acari: Phytoseiidae) مرتبط با کنه‌های اریوفید (Acari: Eriophyoidea) در استان گیلان
بررسی فونستیک جهت جمع آوری و شناسایی کنه های شکارگر فیتوزئیده مرتبط با کنه های اریوفید طی سال 1391در استان گیلان انجام شد. در این بررسی تعداد 21 گونه از کنه های فیتوزئیده متعلق به نه جنس و سه زیر خانواده جمع آوری و شناسایی شدند. 13 گونه از کنه های خانواده فیتوزئیده برای اولین بار در ارتباط با کنه های اریوفید از ایران گزارش می شوند که با علامت ستاره (*) نمایش داده می شوند. اسامی گونه ه...
متن کاملDefinition of the concordis species group of the genus Euseius (Acari: Phytoseiidae), with a morphological reassessment of the species included.
Phytoseiidae (Acari) is the best known family of predatory mites. Within this family, Euseius Wainstein is one of the largest genera. The species of this genus have generalist feeding behavior, including in their diet mites and pollen. Some studies have demonstrated the potential of certain Euseius species to control pest mites. Euseius concordis (Chant) has been mentioned in the literature as ...
متن کاملPhytoseiidae in European grape (Vitis vinifera L.): bio-ecological aspects and keys to species (Acari: Mesostigmata).
The family Phytoseiidae includes many species of predators involved in the control of mite pests of crops all over the world. In European vineyards, these natural enemies play a key role in plant protection as their presence usually makes the use of acaricides unnecessary. Each species has its specific biological features. It is thus of great interest to identify the species reported on grape, ...
متن کاملAmbulatory and Aerial Dispersal Among Specialist and Generalist Predatory Mites (Acari: Phytoseiidae)
Predator-prey systems having a specialist predator often are over-exploitive, unstable and transient while similar systems having a generalist predator show less ßuctuation, more stability and regulation of prey at lower densities. These population dynamics also affect dispersal patterns between specialist and generalist predators. In this study, ambulatory and aerial dispersal were assessed fo...
متن کامل