Cooling rate and starvation affect supercooling point and cold tolerance of the Khapra beetle, Trogoderma granarium Everts fourth instar larvae (Coleoptera: Dermestidae)

2018 ◽  
Vol 71 ◽  
pp. 24-31 ◽  
Author(s):  
M. Mohammadzadeh ◽  
H. Izadi
Keyword(s):  
Cooling Rate ◽  
Cold Tolerance ◽  
Fourth Instar ◽  
Supercooling Point ◽  
Trogoderma Granarium ◽  
Khapra Beetle

scholarly journals Life cycle, morphometrics and damage assessment of the Khapra beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae) on stored groundnut

2009 ◽  
Vol 54 (2) ◽  
pp. 135-142
Author(s):  
A.K. Musa ◽  
M.C. Dike
Keyword(s):  
Life Cycle ◽  
Relative Humidity ◽  
Damage Assessment ◽  
Development Time ◽  
Fourth Instar ◽  
Adult Longevity ◽  
Trogoderma Granarium ◽  
First Instar ◽  
Khapra Beetle ◽  
Average Fecundity

The life cycle of the Khapra beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae) on stored groundnut was studied under fluctuating laboratory conditions of 25?5?C and 70?5% relative humidity. There were five larval instars and the total development time from egg to adult ranged from 37 to 40 days with an average of 37.95 days. The duration of each developmental stage was egg: 6.05 days; first instar: 3.8 days; second instar: 4.7 days; third instar: 5.6 days; fourth instar: 6.2 days; fifth instar: 6.8 days and pupa: 4.8 days. Females had an average fecundity of 80.2 eggs. Mean adult longevity was 12.4 days. .

scholarly journals Climatic Variation of Supercooling Point in the Linden Bug Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae)

Insects ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 144 ◽  
Author(s):  
Tomáš Ditrich ◽  
Václav Janda ◽  
Hana Vaněčková ◽  
David Doležel
Keyword(s):  
Cold Tolerance ◽  
Minimum Temperature ◽  
Climatic Conditions ◽  
Climatic Variation ◽  
Strongly Correlated ◽  
Supercooling Point ◽  
Pyrrhocoris Apterus ◽  
Winter Minimum Temperature ◽  
Different Populations ◽  
Insect Fitness

Cold tolerance is often one of the key components of insect fitness, but the association between climatic conditions and supercooling capacity is poorly understood. We tested 16 lines originating from geographically different populations of the linden bug Pyrrhocoris apterus for their cold tolerance, determined as the supercooling point (SCP). The supercooling point was generally well explained by the climatic conditions of the population’s origin, as the best predictor—winter minimum temperature—explained 85% of the average SCP variation between populations. The supercooling capacity of P. apterus is strongly correlated with climatic conditions, which support the usage of SCP as an appropriate metric of cold tolerance in this species.

Khapra Beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae)

2008 ◽  
pp. 2088-2090
Author(s):  
Gary J. Puterka ◽  
D. Michael Glenn ◽  
George Hangay ◽  
Darryl Gwynne ◽  
John B. Heppner ◽  
...  
Keyword(s):  
Trogoderma Granarium ◽  
Khapra Beetle

Growth and development of khapra beetle, Trogoderma granarium Everts (Col., Dermestidae) on pulses

1969 ◽  
Vol 59 (3) ◽  
pp. 383-388 ◽  
Author(s):  
A. K. Bhattacharya ◽  
N. C. Pant
Keyword(s):  
Wheat Flour ◽  
Growth And Development ◽  
Marked Improvement ◽  
Growth Inhibitor ◽  
Pigeon Pea ◽  
Whole Grains ◽  
French Bean ◽  
Trogoderma Granarium ◽  
Balanced Diet ◽  
Khapra Beetle

Rearing experiments with Trogoderma granarium Everts were conducted to determine why the larvae fail to develop in certain pulses. The larvae were unable to penetrate whole grains of any of the nine pulses tested. In flour form, the pulses fell into three main groups. On flours of green, black, Bengal and kabuli grams, and cowpea and pigeon pea, development was as successful and rapid, or nearly so, as on wheat flour and showed little improvement from the addition of yeast. Development on flours of soybean and lentil was markedly slower, and showed marked improvement when yeast was added. By adding increased proportions of balanced diet, it was shown that the performance of larvae on soybean, lentil and even on French bean flours could be improved, but with the last two was not as good as with cellulose. It is concluded that lentils and French beans lack essential nutrients and may also contain a growth inhibitor.

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