Arid
DOI10.3389/fphys.2013.00345
Eggs and hatchlings variations in desert locusts: phase related characteristics and starvation tolerance
Maeno, Koutaro O.1,2; Piou, Cyril1; Babah, Mohamed A. Ould2; Nakamura, Satoshi3
通讯作者Maeno, Koutaro O.
来源期刊FRONTIERS IN PHYSIOLOGY
ISSN1664-042X
出版年2013
卷号4
英文摘要

Locusts are grasshopper species that express phase polyphenism: modifying their behavior, morphology, coloration, life history and physiology in response to crowding. Desert locusts, Schistocerca gregaria, epigenetically modify progeny quality and quantity in response to crowding. Gregarious (crowded) females produce larger but fewer progeny than do solitarious (isolated) ones. The variability of progeny quality within single egg pod and the reasons why gregarious progeny have a better survival rate than solitarious ones remains unclear. This study investigated 1) the effects of rearing density on the variation in egg size within single egg pods 2) the starvation tolerance of hatchlings from mothers with different phases and 3) the physiological differences in hatchling energy reserve. Isolated females produced smaller but more eggs than did crowded ones. The variation in egg size within egg pods was greater in the latter than in the former. A negative relationship between egg size and number of eggs per egg pod was observed for both groups. Under starvation conditions, gregarious hatchlings survived significantly longer than solitarious ones. Among the solitarious hatchlings, the survival time was longer with increased hatchling body size. However, small individuals survived as long as large ones among the gregarious hatchlings. The percentage of water content per fresh body weight was almost equal between the two phases, before and after starvation. In contrast, the percentage of lipid content per dry body weight was significantly higher in gregarious hatchlings than in solitarious ones before starvation, but became almost equal after starvation. These results demonstrate that female locusts not only trade-off to modify their progeny size and number, but also vary progenies’ energy reserves. We hypothesize that gregarious females enhance their fitness by producing progeny differently adapted to high environmental variability and particularly to starvation conditions.


英文关键词density-dependent phase polyphenism maternal effect progeny size and number locusts Schistocerca gregaria starvation resistance risk-spreading strategies
类型Article
语种英语
国家France ; Mauritania ; Japan
收录类别SCI-E
WOS记录号WOS:000346774000337
WOS关键词SCHISTOCERCA-GREGARIA ; BODY-COLOR ; REARING DENSITY ; PROGENY SIZE ; POLYMORPHISM ; POLYPHENISM ; PLASTICITY ; CHEMICALS ; RESERVES ; STIMULI
WOS类目Physiology
WOS研究方向Physiology
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/2XILL650/177233
作者单位1.CIRAD, UMR CBGP, F-34398 Montpellier, France;
2.Ctr Natl Lutte Antiacridienne, Mauritanian Desert Locust Ctr, Nouakchott, Mauritania;
3.Japan Int Res Ctr Agr Sci, Tsukuba, Ibaraki, Japan
推荐引用方式
GB/T 7714
Maeno, Koutaro O.,Piou, Cyril,Babah, Mohamed A. Ould,et al. Eggs and hatchlings variations in desert locusts: phase related characteristics and starvation tolerance[J]. French National Research Institute for Sustainable Development,2013,4.
APA Maeno, Koutaro O.,Piou, Cyril,Babah, Mohamed A. Ould,&Nakamura, Satoshi.(2013).Eggs and hatchlings variations in desert locusts: phase related characteristics and starvation tolerance.FRONTIERS IN PHYSIOLOGY,4.
MLA Maeno, Koutaro O.,et al."Eggs and hatchlings variations in desert locusts: phase related characteristics and starvation tolerance".FRONTIERS IN PHYSIOLOGY 4(2013).
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