scholarly journals Host patch traits have scale‐dependent effects on diversity in a stickleback parasite metacommunity

Ecography ◽  
2020 ◽  
Vol 43 (7) ◽  
pp. 990-1002 ◽  
Author(s):  
Daniel I. Bolnick ◽  
Emlyn J. Resetarits ◽  
Kimberly Ballare ◽  
Yoel E. Stuart ◽  
William E. Stutz
Keyword(s):  
Host Patch

Host Patch Selection Induced by Parasitism: Basic Reproduction Ratio R0 and Optimal Virulence

2002 ◽  
Vol 62 (2) ◽  
pp. 97-109 ◽  
Author(s):  
S. Charles ◽  
S. Morand ◽  
J.L. Chassé ◽  
P. Auger
Keyword(s):  
Patch Selection ◽  
Basic Reproduction Ratio ◽  
Reproduction Ratio ◽  
Host Patch

scholarly journals Parasitism of Tuta absoluta in tomato plants by Trichogramma pretiosum Riley in response to host density and plant structures

2008 ◽  
Vol 38 (6) ◽  
pp. 1504-1509 ◽  
Author(s):  
Cristina Arantes Faria ◽  
Jorge Braz Torres ◽  
Adriana Maria Vieira Fernandes ◽  
Angela Maria Isidro Farias
Keyword(s):  
Host Density ◽  
Tuta Absoluta ◽  
Plant Canopy ◽  
Trichogramma Pretiosum ◽  
Parasitism Rate ◽  
Tomato Plants ◽  
Processing Tomato ◽  
Upper Third ◽  
Oviposition Sites ◽  
Host Patch

One important factor determining the efficacy of parasitoids is the way they exploit different host patch. This study evaluated the response of females of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) to the oviposition sites of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) on processing tomato plants. In fully developed caged tomato plants T. absoluta moths were released, followed by the release of T. pretiosum females 12h later. After 24h of parasitoid release, the moth oviposition sites were mapped according to the plant canopy, and levels of parasitism assessed. The parasitism rate varied from 1.5 to 28%. There was not influence of plant structures on parasitism, except for the absence of parasitism on the plant apex. Levels of both T. absoluta oviposition and parasitism by T. pretiosum were higher on the upper third of the plant, decreasing downward along the plant canopy.

scholarly journals A simple Markov model for the assessment of host patch quality by foraging parasitoids

Oecologia ◽  
1998 ◽  
Vol 116 (4) ◽  
pp. 456-466 ◽  
Author(s):  
Richard F. Green ◽  
Yoram Ayal
Keyword(s):  
Markov Model ◽  
Patch Quality ◽  
Host Patch

Parasitoid Density and Arena Size Effects on Progeny Production of Anaphes iole Girault (Hymenoptera: Mymaridae)

2003 ◽  
Vol 38 (3) ◽  
pp. 334-341
Author(s):  
E. W. Riddick
Keyword(s):  
Biological Control ◽  
North America ◽  
Size Effects ◽  
Mass Rearing ◽  
Egg Parasitoid ◽  
Progeny Production ◽  
Ongoing Research ◽  
Cage Size ◽  
Anaphes Iole ◽  
Host Patch

Anaphes iole Girault is a native, solitary egg parasitoid of Lygus bugs in North America. Ongoing research is considering factors that may lead to efficient mass rearing of A. iole for augmentative biological control. This study examined the effects of A. iole female density and arena size on progeny production. Production increased by a factor of 2.1 as parasitoid density increased from 5 to 10 and from 10 to 20 females per 8 Larena (rearing cage) with a host patch containing from 1,500 to 2,000 eggs of Lygus hesperus Knight (Heteroptera: Miridae). Sex ratios of mature progeny did not differ significantly between parasitoid densities of 10 versus 20 females. Arena size (≈1, 2, 4, or 8 L cages) had no effect on progeny production when 20 females were confined to the same cage. This research suggests that little or no measurable interference will occur between ovipositing A. iole females on shared host patches and cage size can be varied to increase rearing capacity.

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