Macedo-Rego, Renato C.
Costa-Schmidt, Luiz Ernesto
[2, 3, 4]
Santos, Eduardo S. A.
Número total de Autores: 4
Afiliação do(s) autor(es):
 Univ Sao Paulo, Inst Biociencias, Programa Posgrad Ecol, Rua Matao, Trav 14, 321, BR-05508090 Sao Paulo, SP - Brazil
 Univ Sao Paulo, Inst Biociencias, LAGE Dept Ecol, Rua Matao, Trav 14, 321, BR-05508090 Sao Paulo, SP - Brazil
 Univ Vale Rio dos Sinos, Programa Posgrad Biol, Ave Unisinos, BR-93022000 Sao Leopoldo, RS - Brazil
 Univ Nacl Cordoba, IDEA, CONICET, Lab Biol Reprod & Evoluc, Ave Velez Sarsfield 299, RA-5000 Cordoba Capital - Argentina
 Univ Sao Paulo, Inst Biociencias, Dept Zool, Rua Matao, Trav 14, 321, BR-05508090 Sao Paulo, SP - Brazil
Número total de Afiliações: 5
Tipo de documento:
FEB 24 2016.
Citações Web of Science:
The handicap principle proposes that sexual signals must be costly to be honest. Honesty may be maintained by the costs paid by honest signallers or by the potential costs of cheating. In the latter, handicaps should emerge as a consequence of specific biological constraints, such as life-history trade-offs. Nuptial prey-giving arthropods are good systems to investigate the honesty of sexual signals taking into account trade-offs between self-maintenance and mating effort. We experimentally evaluated if prolonged food shortage during early adulthood imposes long-term negative effects on gift construction by males of the spider Paratrechalea ornata. We also evaluated whether a burst of food availability improved body condition of poorly fed males, increasing their frequency of gift construction. Poorly fed males hardly constructed gifts, even after a marked increase in feeding rate, which clearly improved their body condition. Moreover, initially poorly fed males that latter received high food intake constructed lighter gifts than continuously well fed males. The long-term effects of prolonged dietary restriction on male propensity to construct a gift and on the size of this gift may increase the honesty of this sexually selected signal. From the female's perspective the offer of a gift may bring information on male quality. (AU)