Impact of density, reproduction period and age on fecundity of the yellow mealworm Tenebrio molitor (Coleoptera: Tenebrionidae)

2018 ◽  
Vol 4 (1) ◽  
pp. 43-50 ◽  
Author(s):  
I.E. Berggreen ◽  
J. Offenberg ◽  
M. Calis ◽  
L.-H. Heckmann
Keyword(s):  
Tenebrio Molitor ◽  
Adult Density ◽  
Yellow Mealworm ◽  
Reproduction Period ◽  
Per Capita ◽  
The Impact ◽  
Old Females ◽  
Effect Of Age ◽  
Coleoptera Tenebrionidae

The impact of adult density, reproduction period (days in the same container) and age on reproduction of Tenebrio molitor Linnaeus (Coleoptera: Tenebrionidae) were studied. Data were analysed as total number of larvae in each container (38 cm2) and as daily reproduction per capita. The study was divided in two experiments. Experiment 1 examined the influence of four densities (0.11, 0.21, 0.42 and 0.84 beetles/cm2) and five reproduction periods (1, 2, 3, 4 and 6 days) on reproduction. Experiment 2 examined the effect of age (30-92 days) and three densities (0.11, 0.21 and 0.32 beetles/cm2) on reproduction. The total number of larvae per container was significantly affected by reproduction period and adult density, attaining the highest output at the longest reproduction period of 6 days (214±101 larvae) and highest density of 0.84 beetles/cm2 (215±112 larvae). Daily per capita reproduction, however, was highest at the second lowest density of 0.21 beetles/cm2 (8.58±3.82 larvae/female/day) and shortest reproduction period of 1 day (8.34±4.68 larvae/female/day). In experiment 2, age had a significant effect on reproduction both as total number of larvae per container and number of larvae per female per day. The highest reproduction was found when beetles were 30 days old, but reproduction was in general highest for 13-29 days old females (experiment 1). For production context the highest density of beetles provides highest output of larvae, and beetles are not expected to be stressed under these conditions.

Dietary fatty acids influence the growth and fatty acid composition of the yellow mealworm Tenebrio molitor (Coleoptera: Tenebrionidae)

Lipids ◽  
2017 ◽  
Vol 52 (3) ◽  
pp. 285-294 ◽  
Author(s):  
Elena Dreassi ◽  
Annarita Cito ◽  
Assunta Zanfini ◽  
Lara Materozzi ◽  
Maurizio Botta ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Tenebrio Molitor ◽  
Dietary Fatty Acids ◽  
Yellow Mealworm ◽  
Coleoptera Tenebrionidae

The role of glutathioneS-transferases in the detoxification of some organophosphorus insecticides in larvae and pupae of the yellow mealworm,Tenebrio molitor (Coleoptera: Tenebrionidae)

2001 ◽  
Vol 57 (6) ◽  
pp. 501-508 ◽  
Author(s):  
Iason Kostaropoulos ◽  
Athanasios I Papadopoulos ◽  
Athanasios Metaxakis ◽  
Evridiki Boukouvala ◽  
Euphemia Papadopoulou-Mourkidou
Keyword(s):  
Tenebrio Molitor ◽  
Organophosphorus Insecticides ◽  
Yellow Mealworm ◽  
Coleoptera Tenebrionidae

scholarly journals Oogenesis pattern and type of ovariole of the parasitoid Palmistichus elaeisis (Hymenoptera: Eulophidae)

2012 ◽  
Vol 84 (3) ◽  
pp. 767-774 ◽  
Author(s):  
Gilberto S. Andrade ◽  
Adalberto H. Sousa ◽  
Juliana C. Santos ◽  
Farah C. Gama ◽  
José E. Serrão ◽  
...  
Keyword(s):  
Biological Control ◽  
Natural Enemy ◽  
Mass Production ◽  
Tenebrio Molitor ◽  
Augmentative Biological Control ◽  
Basic Studies ◽  
Old Females ◽  
Coleoptera Tenebrionidae

The knowledge on ovigeny in parasitoids is important for basic studies on physiology and applied biological control. The ovigeny pattern and type of ovariole of the parasitoid Palmistichus elaeisis Delvare & LaSalle (Hymenoptera: Eulophidae) were studied in newly-emerged females at seven, 14, 24 and 48 h intervals after their emergence from Tenebrio molitor L. pupae (Coleoptera: Tenebrionidae). Females of P. elaeisis presented ovaries composed by four ovarioles of the meroistic polytrophic type. The yolk accumulation and chorionogenesis in P. elaeisis were concluded 24 h after the female emergence. The 48 h-old females show a high quantity of egg ready for oviposition. These findings can help to improve the mass production of P. elaeisis and the augmentative biological control by using this natural enemy.

scholarly journals The influence of the synthetic food colourings tartrazine, allura red and indigo carmine on the body weight of Tenebrio molitor (Coleoptera, Tenebrionidae) larvae

2018 ◽  
Vol 9 (4) ◽  
pp. 479-484
Author(s):  
V. O. Martynov ◽  
V. V. Brygadyrenko
Keyword(s):  
Body Weight ◽  
Indigo Carmine ◽  
Tenebrio Molitor ◽  
The Body ◽  
The Other ◽  
Allura Red ◽  
Living Organisms ◽  
The Impact ◽  
Significant Data ◽  
Coleoptera Tenebrionidae

Substances for protecting plants often contain colourings, the impact of which on invertebrates has been studied insufficiently. The addition of food colourings in different concentrations to the diet of saprophage beetles can affect their metabolism, causing loss of body weight. In the experiment, we determined the impact of tartrazine, allura red and indigo carmine on the body weight of Tenebrio molitor Linnaeus, 1758 larvae. The substances were added to their fodder at five concentrations (1, 0.1, 0.01, 0.001 and 0.0001 g/kg of dry fodder) during a 21-day experiment. Statistically significant data on changes in the body weight of T. molitor larvae were received after adding 1 g/kg concentration of indigo carmine and 0.1 and 1 g/kg concentrations of tartrazine. In the other variants of the experiment, no statistically significant differences were determined. Tartrazine, allura red and indigo carmine cause decrease in the body weight of T. molitor larvae, depending on the concentration of the colouring. The toxic effect of synthetic food colourings on living organisms and the low number of studies devoted to such impact on insects indicate the relevance and necessity for further research in this sphere.

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