scholarly journals Comparison of two artificial diets to rear Elaphria agrotina

2018 ◽  
Vol 48 (5) ◽  
Author(s):  
Pollyanna Nunes de Otanásio ◽  
Ludgero Cardoso Galli Vieira ◽  
Vânia Ferreira Roque-Specht ◽  
Silvana Vieira de Paula-Moraes ◽  
Priscila Maria Colombo da Luz ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Development Time ◽  
Reproductive Parameters ◽  
Artificial Diets ◽  
Brazilian Savannah ◽  
Lepidoptera Noctuidae

ABSTRACT: Given the increasing importance of Elaphria agrotina (Guenée) (Lepidoptera: Noctuidae) in corn crops, especially in the Brazilian Savannah biome, the present research aimed to study its development and survival on Greene’s and Poitout & Bues’s artificial diets (25±1°C, 70±10% relative humidity [RH] and 12h photophase). Poitout & Bues’s diet was more suitable than Greene’s diet, providing higher survival percent (77.51% vs. 5.57%), lower development time (49.81 days vs. 55.24 days) and higher fecundity (167.65 vs. 84.9 eggs), respectively. All the caterpillars reared on Poitout & Bues’s diet passed through six instars, while almost half of the larvae reared on Greene’s diet went through one less instar stage. Regarding the main reproductive parameters, higher average time of generation (T) and lower values of net rates of reproduction (Ro), and increased (rm) intrinsic and finite reason of increase (λ), were observed for larvae reared on Greene’s diet. Results presented in this study indicated that Poitout & Bues’s diet is more suitable for maintenance of colonies of E. agrotina as compared to Greene’s diet.

scholarly journals Biology of Anicla infecta (Ochsenheimer, 1816) (Lepidoptera, Noctuidae, Noctuinae), under laboratory conditions

2001 ◽  
Vol 61 (4) ◽  
pp. 661-666 ◽  
Author(s):  
J. A. TESTON ◽  
A. SPECHT ◽  
E. CORSEUIL
Keyword(s):  
Relative Humidity ◽  
Standard Error ◽  
Lolium Multiflorum ◽  
Economic Importance ◽  
Egg Laying ◽  
Adult Longevity ◽  
Environmental Chamber ◽  
Laboratory Conditions ◽  
The Mean ◽  
Lepidoptera Noctuidae

Larvae of Anicla infecta (Ochsenheimer, 1816) (Noctuidae) feed upon many grasses and may be harmful to cereals and fodder of economic importance. This study was developed aiming to contribute to knowledge of the biology of this species. The rearing was done in an environmental chamber with the following settings: temperature of 25 ± 1ºC; relative humidity of 70% <FONT FACE=Symbol>±</FONT> 10%, and photoperiod of L14: D10. The larvae fed on ryegrass, Lolium multiflorum Lam. The results express the mean and standard error for the length of every stage in days. For each stage we observed the following time of development: egg 3.2 <FONT FACE=Symbol>±</FONT> 0.09; larvae 18.7 <FONT FACE=Symbol>±</FONT> 0.07; pre-pupae 3.3 <FONT FACE=Symbol>±</FONT> 0.04; pupae 12.6 <FONT FACE=Symbol>±</FONT> 0.14; and adult longevity was 12.1 <FONT FACE=Symbol>±</FONT> 1.03. Also the pre-egg-laying period was 4.4 <FONT FACE=Symbol>±</FONT> 0.59; the egg-laying period was 8.1 <FONT FACE=Symbol>±</FONT> 0.84; and the post-egg-laying period was 0.3 <FONT FACE=Symbol>±</FONT> 0.14. The mean number of egg-laying cycles per female was 6.7 <FONT FACE=Symbol>±</FONT> 0.73; that of eggs per cycle was 77.5 <FONT FACE=Symbol>±</FONT> 4.37; and total eggs per female was 521.4 <FONT FACE=Symbol>±</FONT> 47.36.

scholarly journals Estimate of Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) development with nonlinear models

2003 ◽  
Vol 63 (4) ◽  
pp. 589-598 ◽  
Author(s):  
R. S. Medeiros ◽  
F. S. Ramalho ◽  
J. C. Zanuncio ◽  
J. E. Serrão
Keyword(s):  
Relative Humidity ◽  
Gossypium Hirsutum ◽  
Nonlinear Model ◽  
Nonlinear Models ◽  
Gossypium Hirsutum L ◽  
Developmental Rates ◽  
Alabama Argillacea ◽  
The Relationship ◽  
Lepidoptera Noctuidae

The objective of this work was to evaluate which nonlinear model [Davidson (1942, 1944), Stinner et al. (1974), Sharpe & DeMichele (1977), and Lactin et al. (1995)] best describes the relationship between developmental rates of the different instars and stages of Alabama argillacea (Hübner) (Lepidoptera: Noctuidae), and temperature. A. argillacea larvae were fed with cotton leaves (Gossypium hirsutum L., race latifolium Hutch., cultivar CNPA 7H) at constant temperatures of 20, 23, 25, 28, 30, 33, and 35ºC; relative humidity of 60 ± 10%; and photoperiod of 14:10 L:D. Low R² values obtained with Davidson (0.0001 to 0.1179) and Stinner et al. (0.0099 to 0.8296) models indicated a poor fit of their data for A. argillacea. However, high R² values of Sharpe & DeMichele (0.9677 to 0.9997) and Lactin et al. (0.9684 to 0.9997) models indicated a better fit for estimating A. argillacea development.

scholarly journals Reproductive potential of Spodoptera eridania (Stoll) (Lepidoptera: Noctuidae) in the laboratory: effect of multiple couples and the size

2016 ◽  
Vol 76 (2) ◽  
pp. 526-530 ◽  
Author(s):  
A. Specht ◽  
D. G. Montezano ◽  
D. R. Sosa-Gómez ◽  
S. V. Paula-Moraes ◽  
V. F. Roque-Specht ◽  
...  
Keyword(s):  
Reproductive Potential ◽  
Reproductive Parameters ◽  
Spodoptera Eridania ◽  
Adult Females ◽  
Controlled Conditions ◽  
Pupal Size ◽  
Lepidoptera Noctuidae

Abstract This study aimed to evaluate the effect of keeping three couples in the same cage, and the size of adults emerged from small, medium-sized and large pupae (278.67 mg; 333.20 mg and 381.58 mg, respectively), on the reproductive potential of S. eridania (Stoll, 1782) adults, under controlled conditions (25 ± 1 °C, 70% RH and 14 hour photophase). We evaluated the survival, number of copulations, fecundity and fertility of the adult females. The survival of females from these different pupal sizes did not differ statistically, but the survival of males from large pupae was statistically shorter than from small pupae. Fecundity differed significantly and correlated positively with size. The number of effective copulations (espematophores) and fertility did not vary significantly with pupal size. Our results emphasize the importance of indicating the number of copulations and the size of the insects when reproductive parameters are compared.

Re-description and biology of Parastethynium maxwelli (Hymenoptera: Mymaridae), an egg parasitoid of Zophiuma lobulata (Hemiptera: Lophopidae), and description of a new species of Parastethynium from Indonesia

Zootaxa ◽  
2011 ◽  
Vol 2733 (1) ◽  
pp. 49 ◽  
Author(s):  
JOHN T. HUBER ◽  
CATHERINE W. GITAU ◽  
GEOFF M. GURR ◽  
CHARLES F. DEWHURST ◽  
MURRAY J. FLETCHER
Keyword(s):  
New Species ◽  
Relative Humidity ◽  
Papua New Guinea ◽  
Adult Development ◽  
Oil Palm ◽  
Development Time ◽  
First Record ◽  
Egg Parasitoid ◽  
Basic Biology ◽  
A New Species

Both sexes of Parastethynium maxwelli (Girault), a parasitoid of Zophiuma lobulata Ghauri eggs on coconut and oil palm in Papua New Guinea, are described and illustrated. The second known species in the genus Parastethynium, P. hirsutum Huber sp. n., from Indonesia (Sulawesi) is also described. The latter represents the first record from the Oriental region. The basic biology of P. maxwelli is presented. Mean progeny produced per female was 57 with a female proportion of 0.59. Mean egg to adult development time was 11 days, at 24.5 o C−29.7 o C and 72−93% relative humidity. Survival time of females and males fed on honey and water was longer compared to males and differed significantly with those provided with water only or nothing at all.

Biological characterization and mating compatibility of Helicoverpa gelotopoeon (D.) (Lepidoptera: Noctuidae) populations from different regions in Argentina

2017 ◽  
Vol 108 (1) ◽  
pp. 108-115 ◽  
Author(s):  
M.I. Herrero ◽  
S.V. Fogliata ◽  
A. Vera ◽  
A. Casmuz ◽  
D. Sosa Gómez ◽  
...  
Keyword(s):  
Genetically Modified Crops ◽  
South American ◽  
Reproductive Parameters ◽  
Biological Characterization ◽  
Present Evidence ◽  
Migratory Capacity ◽  
Mating Compatibility ◽  
American Bollworm ◽  
Lepidoptera Noctuidae ◽  
Two Populations

AbstractHelicoverpa gelotopoeon, the South American bollworm, is a polyphagous pest of the Heliothinae complex that causes damage to soybean, cotton, and chickpea crops. Some species within this complex have developed resistance to genetically modified crops and insecticides, which has led to increased interest in their genetic diversity and population structure. The objective of this study was to characterize biological and reproductive parameters of two populations of H. gelotopoeon collected in two different provinces of Argentina. Intra- and inter-population crosses revealed that H. gelotopoeon populations from both regions of Argentina did not present evidence of pre-zygotic and post-zygotic incompatibility, suggesting that Tucumán and Córdoba populations of H. gelotopoeon belong to a single wide-ranging species. Our data support the occurrence of substantial gene flow between H. gelotopoeon populations, probably due to the widely documented, long-range migratory capacity of Heliothinae species.

Axenic culture of the foreign grain beetle, Ahasverus advena (Waltl) (Coleoptera, Silvanidae), and the rôle of fungi in its nutrition

1965 ◽  
Vol 55 (4) ◽  
pp. 681-690 ◽  
Author(s):  
S. T. Hill
Keyword(s):  
Relative Humidity ◽  
Propylene Oxide ◽  
Small Proportion ◽  
Wheat Germ ◽  
Development Time ◽  
Simple Technique ◽  
Axenic Culture ◽  
Complete Development ◽  
Micro Organisms

The extent of the dependence of the foreign grain beetle, Ahasverus advena (Waltl), upon moulds in its diet was investigated.Using a simple technique, the insect was cultured axenically at controlled temperature and relative humidity on an autoclaved mixture of rolled oats, wheatfeed and dried yeast. After the mixture was sterilised by exposure to propylene oxide vapour, virtually no larvae completed development on it in the absence of living micro-organisms, and this effect was unchanged by the addition of a mixture of B-vitamins followed by autoclaving. However, when fungi were grown on the food previously sterilised with propylene oxide, it again permitted the complete development of the insect.Autoelaved wheat germ was not a suitable diet for A. advena unless a small proportion of dried yeast was added before autoclaving. It is concluded that living fungi are not essential in the diet of the insect, but that they may supplement an otherwise inadequate diet.The minimum development time from egg to adult on a complete food at 80 per cent. E.H. and 30°C. varied from 18 to 25 days.

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