Oviposition preferences of a hymenopterous parasite for certain instars of its aphid host

1984 ◽  
Vol 35 (3) ◽  
pp. 249-254 ◽  
Author(s):  
Liu Shu-sheng ◽  
R. Morton ◽  
R. D. Hughes
2021 ◽  
Vol 22 (11) ◽  
pp. 5951
Author(s):  
Xiaofei Zhou ◽  
Xiaoyu Ling ◽  
Huijuan Guo ◽  
Keyan Zhu-Salzman ◽  
Feng Ge ◽  
...  

Bacterial symbionts associated with insects are often involved in host development and ecological adaptation. Serratia symbiotica, a common facultative endosymbiont harbored in pea aphids, improves host fitness and heat tolerance, but studies concerning the nutritional metabolism and impact on the aphid host associated with carrying Serratia are limited. In the current study, we showed that Serratia-infected aphids had a shorter nymphal developmental time and higher body weight than Serratia-free aphids when fed on detached leaves. Genes connecting to fatty acid biosynthesis and elongation were up-regulated in Serratia-infected aphids. Specifically, elevated expression of fatty acid synthase 1 (FASN1) and diacylglycerol-o-acyltransferase 2 (DGAT2) could result in accumulation of myristic acid, palmitic acid, linoleic acid, and arachidic acid in fat bodies. Impairing fatty acid synthesis in Serratia-infected pea aphids either by a pharmacological inhibitor or through silencing FASN1 and DGAT2 expression prolonged the nymphal growth period and decreased the aphid body weight. Conversely, supplementation of myristic acid (C14:0) to these aphids restored their normal development and weight gain. Our results indicated that Serratia promoted development and growth of its aphid host through enhancing fatty acid biosynthesis. Our discovery has shed more light on nutritional effects underlying the symbiosis between aphids and facultative endosymbionts.


1971 ◽  
Vol 64 (3) ◽  
pp. 547-549 ◽  
Author(s):  
Margaret A. Tidwell ◽  
Kirby L. Hays

2021 ◽  
Author(s):  
Samuel A. Bawa ◽  
Peter C. Gregg ◽  
Alice P. Del Socorro ◽  
Cara Miller ◽  
Nigel R. Andrew

2011 ◽  
Vol 30 (7) ◽  
pp. 895-901 ◽  
Author(s):  
Allan T. Showler ◽  
Julien M. Beuzelin ◽  
Thomas E. Reagan

1957 ◽  
Vol 89 (5) ◽  
pp. 219-230 ◽  
Author(s):  
J. Morris Smith

Discrepancies in the degree of biological control of insect pests where the food plant species of the host were the only known variants in the environment have been subjects of scattered observations in the literature by Morgan (1910), Compere (1936), Gilmore (I938), and others.A long period of speculation on the existence of strains of California red scale, Aonidiella aurantii (Mask.) immune to attack by parasites culminated in the discovery by Flanders (1939a, 1942a) that the hymenopterous parasite Habrolepis rouxi comp. reproduced satisfactorily on A. aurantii on Citrus spp. but that verv few emerged from the same species of scale on sago palm, Cycas revoluta Thunb. This was considered to be the reason for Compere's early failure to bring the hymenopterous parasite, Comperiella bifasciata How, from the Orient to California on scale-infested sago palm; Smith (1942) concluded: “Recognition must be given to the possibility that the host plant may confer on the host insect a kind of immunity to parasitization”.


Author(s):  

Abstract A new distribution map is provided for Dysaphis plantaginea (Pass.) (Anuraphis roseus[Dysaphis plantaginea] Baker) (Hem., Aphididae) (Rosy Apple Aphid). Host Plants: Apple, Plantago. Information is given on the geographical distribution in EUROPE (excl. USSR), Austria, Belgium, Britain, Bulgaria, Czechoslovakia, Denmark, Finland, France, Germany, West Greece, Hungary, Ireland, Italy, Netherlands, Norway, Poland, Portugal, Sicily, Spain, Sweden, Switzerland, ASIA (excl. USSR), Afghanistan, Cyprus, Iran, Israel, Japan, Korea, Lebanon, Nepal, Pakistan, Taiwan, Turkey, USSR, AFRICA, Egypt, Ethiopia, Libya, Morocco, Tunisia, NORTH AMERICA, Canada, USA.


Author(s):  

Abstract A new distribution map is provided for Hysteroneura setariae (Thomas) (Syn. Carolinaia setariae (Thomas)) (Hemipt., Aphididae) (Rusty Plum Aphid). Host Plant: Fruit trees especially plum and peach, also grasses. Information is given on the geographical distribution in ASIA, Hong Kong, India, Malaysia, Malaya, Philippine, Vietnam, AFRICA, Cameroun, Gambia, Ghana, Nigeria, Portuguese Guinea, Sierra Leone, South Africa, South-West Africa, AUSTRALASIA and PACIFIC ISLANDS, Australia, Easter Island, Fiji, Hawaii, Oahu, Papua, Solomon Island;, NORTH AMERICA, Canada, U.S.A., CENTRAL AMERICA and WEST INDIES, Honduras, West Indies, SOUTH AMERICA, Argentina, Brazil, Chile, Colombia, Guyana, Surinam, Venezuela.


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