干旱区生态环境知识资源中心(Arid): The desert locust, Schistocerca gregaria, plastically manipulates egg size by regulating both egg numbers and production rate according to population density

Arid

DOI	10.1016/j.jinsphys.2020.104020
	The desert locust, Schistocerca gregaria, plastically manipulates egg size by regulating both egg numbers and production rate according to population density
	Maeno, Koutaro Ould 1,2; Piou, Cyril 3,4,5; Ghaout, Said 4
通讯作者	Maeno, Koutaro Ould
来源期刊	JOURNAL OF INSECT PHYSIOLOGY
ISSN	0022-1910
EISSN	1879-1611
出版年	2020
卷号	122
英文摘要	Egg-size adjustment is one of the important plastic life-history traits for animals living in heterogeneous environments. The adaptive investment hypothesis predicts that mothers should increase progeny size according to certain cues predicting adverse future conditions of their offspring. However, reproductive resources are limited, and females have to simultaneously reduce egg number to allocate more resources to increase size. It remains unclear how single individuals alter egg size and number according to temporally heterogeneous environments. In the present study, we examined how desert locusts, Schistocerca gregaria, plastically alter egg size and number according to population density. We also investigated the trans-generational maternal effects on progeny characteristics as well as their own maternal physiological response (oviposition interval). Females kept in crowded conditions laid significantly larger and heavier eggs by reducing clutch size (number of eggs per egg pod) compared to isolated females, suggesting the existence of a reproductive trade-off between the two traits. The crowding-forced isolated females induced concerted changes not only in egg size but also in egg number tending towards those characteristics of gregarious control, implying that single individuals showed trade-off when egg size was increased. Double-blind testing confirmed the rapid crowding effects on egg size. Females also responded to crowding by extending the oviposition interval. As the oviposition interval extended, egg size increased, but clutch size decreased. Eggs from crowding-forced isolated females began to produce gregarious-phase type hatchlings (large and black) instead of solitarious-phase type ones (small and green). These results suggested that S. gregaria plastically manipulate egg size by regulating egg numbers and egg production rate, and indicated the presence of trans-generational maternal effects on progeny phase.
英文关键词	Density-dependent phase polyphenism Maternal effect Progeny size and number Schistocerca gregaria Trade-off Phenotypic plasticity
类型	Article
语种	英语
国家	Japan ; France ; Morocco
收录类别	SCI-E
WOS记录号	WOS:000528012900007
WOS关键词	BODY-COLOR ; PHASE POLYMORPHISM ; PROGENY SIZE ; EPIGENETICS ; POLYPHENISM ; MECHANISMS ; MAURITANIA ; VEGETATION ; BEHAVIOR ; BALANCE
WOS类目	Entomology ; Physiology ; Zoology
WOS研究方向	Entomology ; Physiology ; Zoology
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315016
作者单位	1.JIRCAS, Livestock & Environm Div, Ohwashi 1-1, Tsukuba, Ibaraki 3058686, Japan; 2.Agr Kyoto Univ, Lab Insect Ecol, Grad Sch, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan; 3.UMR CBGP, CIRAD, F-34398 Montpellier, France; 4.Ctr Natl Lutte Antiacridienne CNLAA, BP 125, Inezgane, Agadir, Morocco; 5.Ibn Zohr Univ, Agadir, Morocco
推荐引用方式 GB/T 7714	Maeno, Koutaro Ould,Piou, Cyril,Ghaout, Said. The desert locust, Schistocerca gregaria, plastically manipulates egg size by regulating both egg numbers and production rate according to population density[J]. French National Research Institute for Sustainable Development,2020,122.
APA	Maeno, Koutaro Ould,Piou, Cyril,&Ghaout, Said.(2020).The desert locust, Schistocerca gregaria, plastically manipulates egg size by regulating both egg numbers and production rate according to population density.JOURNAL OF INSECT PHYSIOLOGY,122.
MLA	Maeno, Koutaro Ould,et al."The desert locust, Schistocerca gregaria, plastically manipulates egg size by regulating both egg numbers and production rate according to population density".JOURNAL OF INSECT PHYSIOLOGY 122(2020).