Asynchrony between Host Plant and Insects-Defoliator within a Tritrophic System: The Role of Herbivore Innate Immunity

Asynchrony between Host Plant and Insects-Defoliator within a Tritrophic System: The Role of Herbivore Innate Immunity Научная публикация

Журнал

PLoS ONE
ISSN: 1932-6203

Вых. Данные

Год: 2015, Том: 10, Номер: 6, Номер статьи : e0130988, Страниц : DOI: 10.1371/journal.pone.0130988

Авторы

Martemyanov Vyacheslav V. ^1,2 , Pavlushin Sergey V. ¹ , Dubovskiy Ivan M. ¹ , Yushkova Yuliya V. ³ , Morosov Sergey V. ³ , Chernyak Elena I. ³ , Efimov Vadim M. ⁴ , Ruuhola Teija ⁵ , Glupov Victor V. ¹

Организации

1	(Данные Web of science) RAS, SB, Inst Systemat & Ecol Anim, Lab Insect Pathol, Novosibirsk, Russia
2	(Данные Web of science) Natl Res Tomsk State Univ, Inst Biol, Tomsk, Russia
3	(Данные Web of science) RAS, SB, Novosibirsk Organ Chem Inst, Lab Ecol Res & Chromatog Anal, Novosibirsk, Russia
4	(Данные Web of science) RAS, SB, Inst Cytol & Genet, Lab Mol Genet Syst, Novosibirsk, Russia
5	(Данные Web of science) Univ Eastern Finland, Dept Biol, Joensuu, Finland

The effects of asynchrony in the phenology of spring-feeding insect-defoliators and their host plants on insects' fitness, as well as the importance of this effect for the population dynamics of outbreaking species of insects, is a widespread and well-documented phenomenon. However, the spreading of this phenomenon through the food chain, and especially those mechanisms operating this spreading, are still unclear. In this paper, we study the effect of seasonally declined leafquality (estimated in terms of phenolics and nitrogen content) on herbivore fitness, immune parameters and resistance against pathogen by using the silver birch Betula pendula-gypsy moth Lymantria dispar-nucleopolyhedrovirus as the tritrophic system. We show that a phenological mismatch induced by the delay in the emergence of gypsy moth larvae and following feeding on mature leaves has negative effects on the female pupal weight, on the rate of larval development and on the activity of phenoloxidase in the plasma of haemolymph. In addition, the larval susceptibility to exogenous nucleopolyhydrovirus infection as well as covert virus activation were both enhanced due to the phenological mismatch. The observed effects of phenological mismatch on insect-baculovirus interaction may partially explain the strong and fast fluctuations in the population dynamics of the gypsy moth that is often observed in the studied part of the defoliator area. This study also reveals some indirect mechanisms of effect related to host plant quality, which operate through the insect innate immune status and affect resistance to both exogenous and endogenous virus.

Martemyanov V.V. , Pavlushin S.V. , Dubovskiy I.M. , Yushkova Y.V. , Morosov S.V. , Chernyak E.I. , Efimov V.M. , Ruuhola T. , Glupov V.V.
Asynchrony between Host Plant and Insects-Defoliator within a Tritrophic System: The Role of Herbivore Innate Immunity

PLoS ONE. 2015. V.10. N6. e0130988 . DOI: 10.1371/journal.pone.0130988 WOS Scopus

Полный текст от издателя

Опубликована online:

26 июн. 2015 г.

Web of science	WOS:000358147500117
Scopus	2-s2.0-84938635831
OpenAlex	W1489452490