scholarly journals Influence of a diet containing tobacco on the biology of Ephestia kuehniella (Lepidoptera: Pyralidae) and its parasitoid Habrobracon hebetor (Hymenoptera: Braconidae)

2020 ◽  
Vol 117 ◽  
pp. 190-198
Author(s):  
Cleder PEZZINI ◽  
Simone MUNDSTOCK JAHNKE ◽  
Andreas KOHLER
Keyword(s):  
Ephestia Kuehniella ◽  
Habrobracon Hebetor ◽  
Lepidoptera Pyralidae

Generation-Dependent Functional and Numerical Responses of a Naturally Fungus-Infected Colony of Habrobracon hebetor (Hymenoptera: Braconidae) Reared on Ephestia kuehniella (Lepidoptera: Pyralidae) in Iran

2020 ◽  
Author(s):  
Fatima Badran ◽  
Yaghoub Fathipour ◽  
Abdoolnabi Bagheri ◽  
Mohammadreza Attaran ◽  
Gadi V P Reddy
Keyword(s):  
Functional Response ◽  
Attack Rate ◽  
Negative Relationship ◽  
Handling Time ◽  
Ephestia Kuehniella ◽  
Practical Utilization ◽  
Inundative Release ◽  
Habrobracon Hebetor ◽  
Significant Difference ◽  
Lepidoptera Pyralidae

Abstract The functional and numerical responses of Habrobracon hebetor (Say) were assessed over 30 sequential generations (G) on different densities (2, 4, 8, 16, 32, 64, and 128 fifth-instar larvae) of the Mediterranean flour moth, Ephestia kuehniella (Zeller). Seven tested generations (G2inf, G4inf, G6inf, G8inf, G10inf, G15inf, and G30inf) had already been naturally infected by a fungus species, whereas only the second generation (G2) had the colonies of both infected (G2inf) and uninfected (G2uninf) individuals. All infected generations, as well as the uninfected generation, showed a Type III functional response. A high variation was found in the handling times (Th) of the parasitoid through 30 sequential generations, and G10inf had the longest handling time. The shortest handling time and the maximum estimated attack rate (T/Th) were observed in G2inf. No significant difference in terms of the number of parasitized hosts was found among all infected generations, as well as between G2inf and G2uninf. Although the handling times in G2inf and G2uninf were close to each other, the attack coefficient of G2uninf was more than that of G2inf. The attack coefficient and handling time of infected generations increased from G2inf to G10inf and then decreased in the higher generations. The most plausible parameters of functional response of infected generations were observed in Ginf. A negative relationship between eggs laid and host densities was observed in the infected generations (G2inf, G4inf, G6inf, G8inf, and G10inf). G2uninf and, among infected generations, Ginf were the best generations for practical utilization in inundative release programs.

scholarly journals Efeito do fotoperíodo sobre parâmetros de esperança de vida e fertilidade de Habrobracon hebetor (Hymenoptera, Braconidae) em larvas de Ephestia kuehniella (Lepidoptera, Pyralidae)

2020 ◽  
Vol 7 (2) ◽  
pp. 28-39
Author(s):  
Cleder Pezzini ◽  
Simone Mundstock Jahnke ◽  
Andreas Köhler ◽  
Emanuela Somavilla
Keyword(s):  
Ephestia Kuehniella ◽  
Habrobracon Hebetor ◽  
Lepidoptera Pyralidae

Fatores abióticos como fotoperíodo podem afetar os processos de interação entre o ectoparasitoide Habrobracon hebetor e seu hospedeiro Ephestia kuehniella. Sendo assim, objetivou-se avaliar o desenvolvimento e os parâmetros de esperança de vida e de fertilidade de H. hebetor, parasitando E. kuehniella sob diferentes fotoperíodos. Os parasitoides desenvolveram-se durante a fase pré-imaginal em três diferentes fotoperíodos (claro/escuro) 24:0, 12:12 e 0:24, e os adultos oriundos de cada um dos tratamentos ficaram expostos a 0, 12 e 24 horas de fotofase, perfazendo nove tratamentos. Um casal de parasitoides foi inserido por placa de Petri contendo 10 larvas de quinto instar de E. kuehniella, e a cada 24 horas eram retirados e transferidos para uma nova placa com 10 larvas, até a morte da fêmea. A duração do período pré-imaginal em escotofase foi significativamente maior que os períodos com fotofases de 12 e 24 horas. A longevidade das fêmeas e dos machos não diferiu entre os tratamentos. A esperança de vida das fêmeas variou de 7,7 a 10,2 dias. As taxas líquidas de reprodução dos parasitoides criados em fotofase de 12 e 24 horas foram em média de 52,7 a 63,7, maiores que em escotofase (22,9 a 27,9).

Herbicide toxicity, selectivity and hormesis of nicosulfuron on 10 Trichogrammatidae (Hymenoptera) species parasitizingAnagasta ( = Ephestia) kuehniella(Lepidoptera: Pyralidae) eggs

2016 ◽  
Vol 52 (1) ◽  
pp. 70-76 ◽  
Author(s):  
Germano L. D. Leite ◽  
Paula D. de Paulo ◽  
José C. Zanuncio ◽  
Wagner De S. Tavares ◽  
Anarelly C. Alvarenga ◽  
...  
Keyword(s):  
Ephestia Kuehniella ◽  
Lepidoptera Pyralidae ◽  
Herbicide Toxicity
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