Effect of changing temperatures from the spawning and egg stages to the emerging adult stage on the induction of reproductive diapause in females of Pseudaulacaspis pentagona (Hemiptera: Diaspididae)

Author(s):  
Mitsuyoshi Takeda
2019 ◽  
Vol 22 (2) ◽  
pp. 106-112 ◽  
Author(s):  
Tomáš Ditrich ◽  
Miroslav Papáček ◽  
Mikko Heino

Temperate water striders (Gerridae) overwinter as adults and die after spring reproduction. European water cricket Velia caprai (Veliidae) overwinters concurrently in egg and adult stage in Central Europe. This rare overwintering strategy goes with longevity ofthis species. Adults can survive two winters in Central Europe, unlike other semiaquatic bugs. Scandinavian populations of V. caprai and water striders Gerris lacustris and G. lateralis were examined at the beginning and end of September to determine their life histories. Both gerrids start to overwinter during September, females prior to males and macropterous individuals prior to brachypterous. All females of G. lacustris and G. lateralis enter reproductive diapause before winter. V. caprai overwinters in both adult and egg stage in Norway, and can probably survive two winters. Central European and Scandinavian populations of V. caprai share the same unusual way of overwintering and probably also the whole life history.


2013 ◽  
Author(s):  
Sarah M. Bankoff ◽  
Sarah E. Valentine ◽  
Michelle A. Jackson ◽  
Rebecca L. Schacht ◽  
David W. Pantalone

2013 ◽  
Author(s):  
Skyler G. Shollenbarger ◽  
Natasha E. Wright ◽  
Erin L. Browning ◽  
Krista M. Lisdahl

2020 ◽  
Vol 32 (12) ◽  
pp. 1133-1144
Author(s):  
Kristen Murray ◽  
Dimity A. Crisp ◽  
Richard A. Burns ◽  
Don Byrne

2020 ◽  
Vol 12 (2) ◽  
pp. 191-200 ◽  
Author(s):  
Carly J. Claney ◽  
M. Elizabeth Lewis Hall ◽  
Tamara L. Anderson ◽  
Andrea L. Canada

ENTOMON ◽  
2020 ◽  
Vol 44 (4) ◽  
pp. 241-248
Author(s):  
P. Maheswara Reddy ◽  
M. Shankara Murthy

The specimens collected and reared to an adult stage on their respective hosts utilized to characterize the species of the genus Glyphodes based on morphological and genital characters of adults, revealed three species of the genus Glyphodes and were documented from Karnataka viz., Glyphodes caesalis Walker, Glyphodes pulverulentalis Hampson and Glyphodes vertumnalis Guenee on jack-fruit, mulberry and jasmine, respectively. These three species differ morphologically in having entire body green colour in G. vertumnalis, abdomen with oblique lateral stripes in G. pulverulentalis wherein, G. caesalis having sub-marginal black edged patch on costa with four spots. In genitalia, uncus greatly curved and beak shaped in G. vertumnalis, uncus slim and slightly curved in G. caesalis, whereas in G. pulverulentalis uncus long, narrow and slightly curved with short setae at apex.


2018 ◽  
Vol 12 (2) ◽  
pp. 108-116
Author(s):  
A.M. Ustinov ◽  
R.T. Safiullin ◽  
R.R. Safiullin

Information is provided on the causative agents of fasciolosis and the developmental biology of Fasciola hepatica. Fasciolosis of cattle is widespread in the conditions of the Kaluga Region and the Central Federal District on farms of different forms of ownership. The greatest number of F. hepatica eggs in 1 g of feces in cattle is established in JSC "Iskra" - 175,4 specimens, the lowest - in the samples from cows from private farms - 87,6 sp. At the opening slaughter of cattle at meat processing plants region and slaughterhouses invasion of their fasciolae was 34.8%. The average number fascial one infected animal was 32.1 specimens, including adult - and larval specimens of 25.2 and 6.9 copies At veterinary-sanitary expertise and helminthological autopsy of the liver, gallbladder and bile ducts installed year-round invasion fasciolae mainly in the adult stage. Young animals of the current year are infected with fasciola in the pasture massly in August-September, and the extent of invasion in November was 4.3%, for winter-stabling months an average of 12.6%, in March - 17.9% and in April after de-worming - 5.9%.The data obtained in the study of the distribution of the small pond has shown that in the Kaluga region these mollusks are widespread. In this case, the invasion of the small pond snail by larval forms of fasciolae in different years has its own peculiarities, which are influenced by climatic factors.The different dosage forms of clozantel - Rolenol and Santel and Genamectin with mixed fascioliasis and hypodermatosis of bovine in the recommended dose against subcutaneous gadfly larvae - provided 100% efficacy. The tested dosage forms of clozantel are similar in effectiveness against subcutaneous gadfly larvae (EE-100%) and fasciol (EE-95 and 90%, IE-97.4 and 96.3%).The therapeutic and economic effectiveness of complex domestic preparations of Helmicide and Fascocida in spontaneous fascioliasis of cattle is studied.


2002 ◽  
Vol 71 (5) ◽  
pp. 222-228
Author(s):  
Philippe Kreiter ◽  
Marcel Thaon ◽  
Sébastien Clisson ◽  
Michel Lagadec ◽  
Laurence Dijoux ◽  
...  

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