scholarly journals Development of the parasitoid Bracon brevicornis on different larval instars (L2-L5) of the Indian meal moth Plodia interpunctella

2017 ◽  
Vol 23 (2) ◽  
pp. 59
Author(s):  
G. A. Malesios ◽  
D. A. Prophetou-Athanasiadou
Keyword(s):  
Adult Life ◽  
Plodia Interpunctella ◽  
Developmental Time ◽  
Adult Life Span ◽  
Larval Instars ◽  
Indian Meal ◽  
Gregarious Parasitoid ◽  
Lepidoptera Pyralidae ◽  
The Mean ◽  
F1 Generation

Bracon brevicornis (Wesmael) (Hymenoptera: Braconidae) is a gregarious parasitoid that attacks a variety of important lepidopterous pests of stored products. The aim of this study was to determine if different larval instars of Plodia interpunctella (Lepidoptera: Pyralidae) affected longevity and fecundity of parasitoid B. brevicornis. Percentage of parasitism, number of eggs laid on different larval instars of P. interpunctella, number of larvae, prepupae, pupae and the number of F2 adults of B. brevicornis as well as the developmental time of parasitoid egg, larva, prepupa, pupa and the total developmental time from egg to adult on different larval instars of the host were recorded. Our results showed that statistically significant differences were observed among the larval instars of P. interpunctella in all studied parameters. In L2 of P. interpunctella no eggs of B. brevicornis were observed. A few eggs laid on L3 but they were not developed successfully. Concerning the development of B. brevicornis on L4 and L5 instars of P. interpunctella statistically significant differences were observed between the two instars. The mean number of eggs laid by B. brevicornis on L4 of P. interpunctella per 10 days was 2.42 eggs per adult, and the mean number larvae, prepupa, pupae and adults was 1.42, 1.37, 1.26 and 1.24 respectively. The mean number of eggs laid on L5 of P. interpunctella by B. brevicornis was 13.65, while the mean number of larvae, prepupae, pupae and adults was 9.73, 7.90, 7.44 and 7.16 respectively. In all cases the differences were statistically significant. The developmental time of B. brevicornis developed on L4 instar of P. interpunctella was 1.12 days for egg, 2.03 for larva, 1.47 for prepupa, 6.82 for pupa and the total developmental time from egg to adult 11.45 days. The developmental time of B. brevicornis developed on L5 instar of P. interpunctella was 1.18 days for egg, 1.68 for larva, 1.29 for prepupa, 7.76 for pupa and the total developmental time from egg to adult 11.92 days. The female and male B. brevicornis adult life span of F1 generation was 16.70 and 11 days when developed on L4 of P. interpunctella and 28.70 and 17.60 days when developed on L5 of P. interpunctella.

scholarly journals Efficacy of essential oils to control the Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae)

2017 ◽  
Vol 20 (4) ◽  
pp. 1122-1129 ◽  
Author(s):  
Emiliano Nicolás Jesser ◽  
Jorge Omar Werdin-González ◽  
Ana Paula Murray ◽  
Adriana Alicia Ferrero
Keyword(s):  
Essential Oils ◽  
Plodia Interpunctella ◽  
Indian Meal Moth ◽  
Indian Meal ◽  
Lepidoptera Pyralidae

On the biology of Lioadalia flavomaculara (Deg.) (Col., Coccineffidae), a predator of the wheat aphid (Schizaphis graminum (Rond.)) in South Africa

1972 ◽  
Vol 61 (4) ◽  
pp. 673-679 ◽  
Author(s):  
H. Dick Brown
Keyword(s):  
South Africa ◽  
Life Span ◽  
Adult Life ◽  
Schizaphis Graminum ◽  
Free State ◽  
Immature Stages ◽  
Life Stages ◽  
Adult Life Span ◽  
Larval Instars ◽  
Important Predator

An account is given of the biology and different life stages of Lioadalia flavomaculata (Deg.), an important predator of the wheat aphid, Schizaphis graminum (Rond.), in the Orange Free State, South Africa. Eggs are laid in batches of 6–23 eggs, generally on the soil, and incubation takes 2.1–2.8 days at 32°C and 8.6–9.1 days at 16°C. There are four larval instars, the last of which has the longest duration; total development of the immature stages averaged 11.5, 161, 220, 30.2, 35.5 and 54.0 days at 32, 27, 24, 21, 18.5 and 16°C, respectively. Beetles mate within a few days of emergence and oviposition commences 3–10 days later, depending on temperature. Maximum fecundity averaged 858.5 eggs at 24°C. From 20.7 to 24.6 eggs per day were laid at the higher range of temperatures studied (24–32°C). Oviposition took place mainly during the day. Adult life span was 24–74.3 days.

scholarly journals Effects of Low Ozone Concentrations and Short Exposure Times on the Mortality of Immature Stages of the Indian Meal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae)

2014 ◽  
Vol 54 (3) ◽  
pp. 267-271 ◽  
Author(s):  
Ensieh Keivanloo ◽  
Hussein Sadeghi Namaghi ◽  
Mohammad Hossein Haddad Khodaparast
Keyword(s):  
Laboratory Experiments ◽  
Plodia Interpunctella ◽  
Short Exposure ◽  
Stored Products ◽  
Immature Stages ◽  
Indian Meal Moth ◽  
Pistachio Nuts ◽  
Indian Meal ◽  
Lepidoptera Pyralidae ◽  
Date Fruits

Abstract In Iran, the Indian meal moth, Plodia interpunctella (Hübner), is one of the most important pests of such stored products as date fruits and pistachio nuts. Ozone was applied as a gas at four concentrations (0, 2, 3, and 5 ppm) for four different periods (30, 60, 90, and 120 min) on the immature stages of P. interpunctella. The results indicated that by increasing the concentration and exposure time, the rate of mortality increased for all tested stages. This study showed that 12-day-old larvae were more susceptible than other stages when exposed to 5 ppm ozone for 120 min. The next in order of susceptibility were pupae, then 5-day-old larvae, and 17-dayold larvae had the highest sensitivity to ozonation. At the highest concentration of ozone, for the longest time, the least mortality rate was recorded for one-day-old eggs. According to the results, a reduction in the population density of P. interpunctella in laboratory experiments is promising. However, validation studies will be necessary to fully determine the potential of ozone as a replacement for the current post harvest chemical control of P. interpunctella on either pistachio nuts or date fruits.

scholarly journals Some Brain Peptides Regulating the Secretion of Digestive Enzymes in the Indian Meal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae)

2014 ◽  
Vol 54 (3) ◽  
pp. 279-286 ◽  
Author(s):  
Seyede Minoo Sajjadian ◽  
Vahid Hosseininaveh ◽  
Khalil Talebi Jahromi
Keyword(s):  
High Performance ◽  
Plodia Interpunctella ◽  
Brain Extract ◽  
Larval Midgut ◽  
Indian Meal Moth ◽  
Physiological Processes ◽  
Indian Meal ◽  
Lepidoptera Pyralidae ◽  
Dose Dependent ◽  
The Brain

Abstract The Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) is a destructive polyphagous pest of many stored products. To interfere with the physiological processes, especially digestion, of the larval pest, more information on the regulatory mechanisms is needed. The brain extract from 1-day-old last instar larvae of P. interpunctella was examined. In the bioassays, the midguts were treated with the brain extract, and the carbohydrase and protease activities were measured. The brain extract showed increasing dose-dependent effects on α-amylase, α-glucosidase, β-glucosidase, α-galactosidase, β-galactosidase, and trypsin secretion in the larval midgut. The extract was further characterised and partially purified using high performance liquid chromatography (HPLC). Several peptides were determined in the brain extract regulating hydrolase activities in the larval midgut of the pest.

W-enriched satellite sequence in the Indian meal moth, Plodia interpunctella (Lepidoptera, Pyralidae)

2017 ◽  
Vol 25 (3-4) ◽  
pp. 241-252 ◽  
Author(s):  
Martina Dalíková ◽  
Magda Zrzavá ◽  
Svatava Kubíčková ◽  
František Marec
Keyword(s):  
Plodia Interpunctella ◽  
Satellite Sequence ◽  
Indian Meal Moth ◽  
Indian Meal ◽  
Lepidoptera Pyralidae

Laboratory studies on the role of an egg predator,Blattisocius tarsalis(Berlese) (Acari: Ascidae), in relation to the natural control ofEphestia Cautella(Walker) (Lepidoptera: Pyralidae) in Warehouses

1981 ◽  
Vol 71 (4) ◽  
pp. 557-574 ◽  
Author(s):  
C. P. Haines
Keyword(s):  
Adult Life ◽  
Effective Control ◽  
Ephestia Cautella ◽  
Pest Species ◽  
Natural Control ◽  
Adult Life Span ◽  
Rate Of Increase ◽  
Blattisocius Tarsalis ◽  
Lepidoptera Pyralidae

AbstractEffective control ofEphestia cautella(Wlk.) byBlattisocius tarsalis(Berl.) has occasionally been observed in warehouses. It has been postulated that this control is negated by fumigation under sheets, because of differential effects on the moth and its predator, and removal of alternative prey. The biology ofB. tarsaliswas studied at 27°C and 73% RH. On eggs ofE. cautella, development took 5·9 days and there was 7% mortality; on eggs ofTribolium oastaneum(Hbst.), development took 7·4 days and there was 48% mortality. When offered a choice of eggs of the two pest species, the mites very rarely preyed on those ofT. castaneum. The number ofE. cautellaeggs consumed (after correction for partial consumption) was 3·8 (total) by nymphs, 2·4/day by ovipositing females, 1·5/day by non-ovipositing females, and 0·8/day by males. The sex ratio (female: male) was 2·5:1. Adult life-span averaged about 55 days (maximum 153 days), and the oviposition period lasted about 20 days. Females laid up to 5 eggs/day at peak oviposition. The potential rate of increase ofB. tarsalisonE. cautellaeggs was very high, far exceeding that of its prey. These data confirm previous postulates concerning the role ofB. tarsalisin natural control ofE. cautella, and support the hypothesis that fumigation reduces predator-effectiveness. Modification of control regimes might allow greater natural control by the mite and reduce the increasing pest status of the moth.

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