Constrained oviposition and female-biased sex allocation in a parasitic wasp

Oecologia ◽  
1997 ◽  
Vol 109 (4) ◽  
pp. 547-555 ◽  
Author(s):  
P. J. Ode ◽  
Michael F. Antolin ◽  
Michael R. Strand
Keyword(s):  
Sex Allocation ◽  
Parasitic Wasp

scholarly journals Effects of host and foundress density on reproductive strategy of Diaeretiella rapae

2012 ◽  
Vol 65 ◽  
pp. 294-294 ◽  
Author(s):  
R. Kant ◽  
M.A. Minor ◽  
S.A. Trewick ◽  
W.R.M. Sandanayaka
Keyword(s):  
Sex Ratio ◽  
Reproductive Strategy ◽  
Sex Allocation ◽  
Parasitic Wasp ◽  
Female Offspring ◽  
Reproductive Fitness ◽  
Brevicoryne Brassicae ◽  
Diaeretiella Rapae ◽  
Progeny Production ◽  
Total Parasitism

The reproductive fitness of a parasitoid depends on the oviposition decisions of a female in response to competition The present study investigated the oviposition and sex ratio of offspring produced by the parasitic wasp Diaeretiella rapae while competing with other conspecific females and at different host densities The number of Brevicoryne brassicae nymphs parasitised by female D rapae increased with the number of nymphs offered to them However the proportion of nymphs parasitised by the female decreased when nymph density was high The proportion of fertilised eggs oviposited by females decreased when nymph density increased An increase in the number of foundresses (females ovpositing together) increased the total parasitism but the contribution of each female (the number of nymphs each female parasitised) decreased Smaller proportions of female offspring were produced when females were competing for the same hosts The results of this study suggest that both host and foundress densities asymmetrically affect progeny production and sex allocation in this species

Sex Allocation and Sexual Asymmetries in Intra-Brood Competition in the Parasitic Wasp Bracon hebetor

10.2307/5668 ◽  
1996 ◽  
Vol 65 (6) ◽  
pp. 690 ◽  
Author(s):  
Paul J. Ode ◽  
Michael F. Antolin ◽  
Michael R. Strand
Keyword(s):  
Sex Allocation ◽  
Parasitic Wasp ◽  
Bracon Hebetor

Differential dispersal and female-biased sex allocation in a parasitic wasp

1998 ◽  
Vol 23 (3) ◽  
pp. 314-318 ◽  
Author(s):  
PAUL ODE ◽  
MICHAEL ANTOLIN ◽  
MICHAEL STRAND
Keyword(s):  
Sex Allocation ◽  
Parasitic Wasp

Male biased sex allocation with plant size in gynomonoecious Aster ageratoides

2013 ◽  
Vol 20 (3) ◽  
pp. 386-390
Author(s):  
Ge Xingyue ◽  
Zhu Biru ◽  
Liao Wanjin
Keyword(s):  
Sex Allocation ◽  
Plant Size
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