Asymmetry in thermal tolerance trade-offs between the B and Q sibling species of Bemisia tabaci (Hemiptera: Aleyrodidae).
J Evol Biol
; 24(5): 1099-109, 2011 May.
Article
en En
| MEDLINE
| ID: mdl-21338436
ABSTRACT
We investigated life history trade-offs related to thermal tolerance in two sibling species, commonly referred to as the B and Q biotypes, of Bemisia tabaci. We focused on basal resistance to short unpredicted heat stress, which reflects the organism investment, during both optimal and stressful conditions, in insuring its survival. At 27 °C, the relative reproductive performance of B was seven-fold higher than Q. After short stress of 42 °C, these differences increased to 23-fold. A turnover took place after short stress of 43 and 45 °C, in which Q adults performed better. As the expression of the analysed Hsp70 and other stress-related genes was found to be higher in the Q species, our data likely reflects two different strategies for optimal performance. B lowers soma protection for achieving maximum reproduction ('direct inhibitory' trade-off model), whereas Q invests significant resources in being always 'ready' for a challenge.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Calor
/
Hemípteros
/
Aclimatación
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
J Evol Biol
Asunto de la revista:
BIOLOGIA
Año:
2011
Tipo del documento:
Article
País de afiliación:
Israel