Impact of fluctuating and constant temperatures on key life history parameters of Sipha flava (Hemiptera: Aphididae).

AUAD, A. M.; SILVA, S. E. B.; SANTOS, J. C.; VIEIRA, T. M.

Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1034881

Full metadata record

DC Field	Value	Language
dc.contributor.author	AUAD, A. M.	pt_BR
dc.contributor.author	SILVA, S. E. B.	pt_BR
dc.contributor.author	SANTOS, J. C.	pt_BR
dc.contributor.author	VIEIRA, T. M.	pt_BR
dc.date.accessioned	2016-01-23T11:11:11Z	pt_BR
dc.date.available	2016-01-23T11:11:11Z	pt_BR
dc.date.created	2016-01-23	pt_BR
dc.date.issued	2015	pt_BR
dc.identifier.citation	Florida Entomologist, v. 98, n. 2, p. 424-429, 2015.	pt_BR
dc.identifier.uri	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1034881	pt_BR
dc.description	This study aimed to evaluate the impact of constant and fluctuating temperatures on the biology of Sipha flava (Forbes) (Hemiptera: Aphididae) in order to determine whether the results of laboratory studies can be extrapolated to those performed in natural conditions. We compared the biological parameters of S. flava kept in an uncontrolled greenhouse in which temperatures fluctuated (treatment 1) with those kept in a phytotron-type climate chamber that simulated the mean hourly average temperatures of the greenhouse (treatment 2). In addition, we compared the effects of treatment 2 versus the effects of having a set temperature during photophase and another set temperature during scotophase versus a constant daily average temperature. The experimental design was completely random, and 150 nymphs were used per treatment at the outset of the biossays. However, the number of repetitions was altered in relation to survival of the aphids in the different instars and treatments. By daily use of a stereoscopic microscope, we evaluated the following parameters: the duration (days) and survival (%) of each instar and stage as well as the reproductive capacity (offspring per female per day) and the longevity (days) of adults. The simulation of mean hourly temperatures of an uncontrolled greenhouse favored the survival, reproductive capacity, and longevity of adults ? which are factors of great importance in the insect population growth ? compared with those insects kept at 27 °C (photophase) and 18 °C (scotophase) or kept at the constant daily average temperature. The results showed that much caution must be exercised in extrapolating results obtained in the laboratory under constant temperatures to predict the population dynamics of field populations of S. flava.	pt_BR
dc.language.iso	eng	eng
dc.rights	openAccess	eng
dc.subject	Insect	pt_BR
dc.subject	Aphid	pt_BR
dc.title	Impact of fluctuating and constant temperatures on key life history parameters of Sipha flava (Hemiptera: Aphididae).	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.date.updated	2016-03-18T11:11:11Z	pt_BR
dc.subject.nalthesaurus	forage	pt_BR
riaa.ainfo.id	1034881	pt_BR
riaa.ainfo.lastupdate	2016-03-18	pt_BR
dc.contributor.institution	ALEXANDER MACHADO AUAD, CNPGL; Sandra E. B. Silva; Juliana C. Santos; Tamiris M. Vieira.	pt_BR
Appears in Collections:	Artigo em periódico indexado (CNPGL)

Files in This Item:

File	Description	Size	Format
Cnpgl2015FloridaEntImpact.pdf		734.33 kB	Adobe PDF	View/Open

Show simple item record