Biology and Life Cycle of Anaphes sordidatus (Hymenoptera: Mymaridae), an Egg Parasitoid of the Carrot Weevil (Coleoptera: Curculionidae)

1986 ◽  
Vol 15 (1) ◽  
pp. 100-105 ◽  
Author(s):  
R. D. Collins ◽  
E. Grafius
Keyword(s):  
Life Cycle ◽  
Egg Parasitoid ◽  
Carrot Weevil

scholarly journals Anagrus dmitrievi sp. n. (Hymenoptera, Mymaridae), an egg parasitoid of Zyginidia eremita (Hemiptera, Cicadellidae), a pest of maize in Xinjiang, China

ZooKeys ◽  
2018 ◽  
Vol 736 ◽  
pp. 43-57 ◽  
Author(s):  
Qin Li ◽  
Hongying Hu ◽  
Serguei V. Triapitsyn ◽  
Long Yi ◽  
Jiaxiong Lu
Keyword(s):  
Life Cycle ◽  
Natural Enemy ◽  
Egg Parasitoid ◽  
Palaearctic Species ◽  
Autonomous Region ◽  
Xinjiang Uyghur Autonomous Region ◽  
Economic Pest

A new Palaearctic species of Anagrus Haliday (Hymenoptera, Mymaridae), A. (Anagrus) dmitrievi Triapitsyn & Hu, sp. n., is described, diagnosed, and illustrated from Xinjiang Uyghur Autonomous Region of China. It was reared from parasitized eggs of the leafhopper Zyginidia (Zyginidia) eremita Zachvatkin (Hemiptera, Cicadellidae) on leaves of maize. A key to the 21 named species of Anagrus known from China is provided. Zyginidiaeremita is an important economic pest in Xinjiang, occurring in approximately 90% of maize fields. The phenology and life cycle of Z.eremita is summarized. Parasitism of its eggs by A.dmitrievi in maize fields was 12–75 % (average about 38 %), thus making it a rather effective natural enemy.

THE LIFE HISTORY OF THE CARROT WEEVIL, LISTRONOTUS OREGONENSIS (COLEOPTERA: CURCULIONIDAE) UNDER CONTROLLED CONDITIONS

1976 ◽  
Vol 108 (9) ◽  
pp. 931-934 ◽  
Author(s):  
P. Martel ◽  
H. J. Svec ◽  
C. R. Harris
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Larval Stage ◽  
Egg Production ◽  
Laboratory Studies ◽  
Preoviposition Period ◽  
Complete Life Cycle ◽  
History Of ◽  
Listronotus Oregonensis ◽  
Carrot Weevil

AbstractLaboratory studies on the biology of the carrot weevil, Listronotus oregonensis (LeConte), were performed at 21° and 27 °C. At 21 °C females laid eggs for 88 days on carrot slices and 94 days on foliage. Egg production per female averaged 156 and 175 on slices and leaves respectively. Eggs hatched after 8.3 days incubation and the larval stage comprising four instars was completed in 19.1 days. The prepupal and pupal stages lasted 3.7 and 9.4 days respectively. The complete life cycle including an average preoviposition period of 17 days was 57.6 days. Development was more rapid at 27 °C, with the complete life cycle taking only 37 days.

SIMULATION MODEL FOR THE POPULATION DYNAMICS OF THE CARROT WEEVIL, LISTRONOTUS OREGONENSIS (LECONTE) (COLEOPTERA: CURCULIONIDAE)

1991 ◽  
Vol 123 (1) ◽  
pp. 63-76 ◽  
Author(s):  
D.X. Zhao ◽  
G. Boivin ◽  
R.K. Stewart
Keyword(s):  
Population Dynamics ◽  
Simulation Model ◽  
Mortality Rates ◽  
Egg Parasitoid ◽  
Adult Density ◽  
Larval Population ◽  
Listronotus Oregonensis ◽  
The Mean ◽  
Carrot Weevil ◽  
The Impact

AbstractA simulation model was developed for the population dynamics of a carrot weevil, Listronotus oregonensis (LeConte), population on muck-grown carrots. The model includes mortality rates of eggs, larvae, and pupae for different sowing dates of carrots. It also incorporates the overwintered adult density, the temperature-dependent growth rates of the above-mentioned life stages, the age-, temperature-, and phenology-dependent oviposition rates, and the impact of an egg parasitoid, Anaphes sordidatus (Girault), on egg mortality rates. Model output was evaluated by comparing simulated results with observed results on the seasonal totals and time of population peaks of the egg and larval populations. The mean percentage differences between the simulated and observed seasonal egg totals were 3.1 ± 0.66 (SE) in 1987 and 1988, and 4.2 ± 0.05 in 1989. They were not statistically different. The mean percentage differences between the simulated and observed seasonal larval totals were 10 ± 3.33 in 1987 and 1988 and 29.8 ± 0.66 in 1989. Independent data sets (i.e. field data in 1989) showed a significant increase in the simulation error of the larval population. Sensitivity analysis indicated that A. sordidatus had a large influence on the population dynamics of L. oregonensis.

IDENTIFIKASIWERENG PUCUK JAMBU METE , Sanurus indecora DAN BEBERAPA ASPEK BIOLOGINYA

2020 ◽  
Vol 9 (4) ◽  
pp. 157
Author(s):  
NFN SISWANTO ◽  
E. A. WIKARDI ◽  
E. KARMAWATI
Keyword(s):  
Life Cycle ◽  
Natural Enemies ◽  
Host Plants ◽  
Morphological Characteristics ◽  
Egg Parasitoid ◽  
Biological Research ◽  
Taxonomic Study ◽  
Alternative Host ◽  
Medicinal Crops ◽  
Biological Aspects

<p>Dalam beberapa tahun terakhir tanaman jambu mete di NTB diserang oleh wercng pucuk. yang semula dikenal sebagai Lawana sp. atau L. Candida. Penamaan tersebut tidak tepat karena tidak didukung oleh penelitian taksonomi yang memadai. Penelitian ini bertujuan untuk mengidentifikasi serangga wereng pucuk tersebut berdasarkan ciri morfologi serta mcmpelajari beberapa aspek biologinya. Identiikasi dilakukan di Balai Penelitian Tanaman Rempah dan Obat (Balittro), Bogor dan Pusat Penelitian dan Pengembangan Biologi LIPI, Cibinong dari September - Nopember 2002, sedang pengamatan lapang di lakukan di daerah Lombok, NTB pada tahun 2001-2002. Dai identifikasi terhadap serangga contoh yang diambil dai beberapa lokasi di Lombok, NTB dapat disimpulkan bahwa wereng pucuk jambu mete tersebut adalah Sanurus indecora Jacobi. Beberapa cii utama serangga ini antara lain pada bentuk dan venasi sayap depan (legmen), jumlah spina (duri) lateral pada tibia kaki belakang, bentuk carina pada frons (muka bagian atas) dan bentuk aedeagus (genitalia jantan). Hasil pengamatan di lapangan menunjukkan bahwa daerah sebaran serangga tersebut terdapat di daerah Lombok dan Sumbawa, mempunyai banyak inang antara lain mangga, jeruk, krotalaria, jarak, rambutan, bougcnville dan nangka, siklus hidup 3 -4 minggu, seekor imago mampu meletakkan telur 80 butir atau lebih serta mempunyai beberapa musuh alami antara lain parasitoid telur, Aphanomerus sp. dan jamur entomopatogen, Synnematium sp. dan atau Hirsulella citriformis.</p><p>Kata kunci: Wereng pucuk, jambu mete, Sanurus indecora</p><p> </p><p><strong>ABSTRACT</strong></p><p><strong>Identiication of cashew shoot hopper, S. indecora and its biological aspects</strong></p><p>In the last few years, cashew plantations in West Nusa Tenggara has been attacking by shoot hopper, which formerly known as Lawana sp. or L. Candida. The naming was incorrect as there was not supported by accurate taxonomic study. The research was aimed at identifying the insect based on its morphological characteristics and studying its biological aspects in the ield. Identification was carried out in Balittro (Research Institute for Spice and Medicinal Crops), Bogor and Biological Research and Development Centre LIPI, Cibinong from September Nopember 2002, while ield observation was carried out in Lombok, NTB duing 2001-2002. Identification result showed that the shoot hopper is Sanurus indecora Jacobi. Some important characteristics of the insect arc the form and venation of tegmen, number of metatibial spina, form of carina on the frons and Ihe aedeagus. Results of the ield observation showed that the insect spreads in Lombok and Sumbawa. The alternative host plants are mango, citrus, Crolalaria, Ricmus commums, rambutan, Bougenville and Jackfruit. Its life cycle is 3 -4 weeks, female could lay 80 eggs or more. They have some natural enemies such as egg parasitoid, Aphanomerus sp. and entomopathogen fungi. Synnematium sp. or Hirsulella cilnformts.</p><p>Key words : Shool hopper, Anacardium occidentale. Sanurus indecora</p>

scholarly journals The detection of Anaphes sp. nov. [Hymenoptera : Mymaridae], an egg parasitoid of the carrot weevil in Nova Scotia

2005 ◽  
Vol 77 (2) ◽  
pp. 79-82 ◽  
Author(s):  
L.R.E. Hopper ◽  
J.-P.R. Le Blanc ◽  
G. Boivin
Keyword(s):  
Nova Scotia ◽  
Parasitic Wasp ◽  
Egg Parasitoid ◽  
Width Ratio ◽  
Length Width ◽  
Listronotus Oregonensis ◽  
Growth Chambers ◽  
Carrot Weevil ◽  
Anaphes Listronoti ◽  
A New Species

The wasps Anaphes victus (Huber) and Anaphes listronoti (Huber) [Hymenoptera : Mymaridae] parasitize 50% of the eggs of carrot weevil, Listronotus oregonensis (Le Conte) [Coleoptera : Curculionidae] in Quebec and in Ontario. Attempts to detect either of these egg parasites from exposed carrot weevil eggs in Nova Scotia were unsuccessful. However, 48 individuals of a new species of parasitic wasp, Anaphes sp. nov. [Hymenoptera : Mymaridae], were detected in carrot (Daucus carota) fields in Nova Scotia, using carrots infested in growth chambers with carrot weevil eggs. Anaphes sp. nov. is distinguishable from the other parasites of the carrot weevil by characteristics of the forewing. Anaphes sp. nov. has a forewing length : width ratio greater than 7 :3 while A. victus and A. listronoti have a forewing length : width ratio of less than 6 : 7.

Ultrastructural analysis of “Sensory” surface nerve endings and “putative” neurotransmitter sites in Schistosoma mansoni Miracidia

1989 ◽  
Vol 47 ◽  
pp. 962-963
Author(s):  
Betty Ruth Jones ◽  
Steve Chi-Tang Pan
Keyword(s):  
Nervous System ◽  
Life Cycle ◽  
Schistosoma Mansoni ◽  
Snail Host ◽  
Complex Life Cycle ◽  
Rational Approach ◽  
Effective Control ◽  
The Social ◽  
Social And Economic Development ◽  
Basic Biology

INTRODUCTION: Schistosomiasis has been described as “one of the most devastating diseases of mankind, second only to malaria in its deleterious effects on the social and economic development of populations in many warm areas of the world.” The disease is worldwide and is probably spreading faster and becoming more intense than the overall research efforts designed to provide the basis for countering it. Moreover, there are indications that the development of water resources and the demands for increasing cultivation and food in developing countries may prevent adequate control of the disease and thus the number of infections are increasing.Our knowledge of the basic biology of the parasites causing the disease is far from adequate. Such knowledge is essential if we are to develop a rational approach to the effective control of human schistosomiasis. The miracidium is the first infective stage in the complex life cycle of schistosomes. The future of the entire life cycle depends on the capacity and ability of this organism to locate and enter a suitable snail host for further development, Little is known about the nervous system of the miracidium of Schistosoma mansoni and of other trematodes. Studies indicate that miracidia contain a well developed and complex nervous system that may aid the larvae in locating and entering a susceptible snail host (Wilson, 1970; Brooker, 1972; Chernin, 1974; Pan, 1980; Mehlhorn, 1988; and Jones, 1987-1988).

A freeze-fracture-etched study of the physarum polycephalum plasma membrane during early formation of the macroplasmodial stage

1993 ◽  
Vol 51 ◽  
pp. 346-347
Author(s):  
Randolph W. Taylor ◽  
Henrie Treadwell
Keyword(s):  
Plasma Membrane ◽  
Life Cycle ◽  
Growth Phase ◽  
Filter Paper ◽  
Physarum Polycephalum ◽  
Freeze Fracture ◽  
Petri Dish ◽  
Wire Screen ◽  
Wide Mouth ◽  
Sterile Filter

The plasma membrane of the Slime Mold, Physarum polycephalum, process unique morphological distinctions at different stages of the life cycle. Investigations of the plasma membrane of P. polycephalum, particularly, the arrangements of the intramembranous particles has provided useful information concerning possible changes occurring in higher organisms. In this report Freeze-fracture-etched techniques were used to investigate 3 hours post-fusion of the macroplasmodia stage of the P. polycephalum plasma membrane.Microplasmodia of Physarum polycephalum (M3C), axenically maintained, were collected in mid-expotential growth phase by centrifugation. Aliquots of microplasmodia were spread in 3 cm circles with a wide mouth pipette onto sterile filter paper which was supported on a wire screen contained in a petri dish. The cells were starved for 2 hrs at 24°C. After starvation, the cells were feed semidefined medium supplemented with hemin and incubated at 24°C. Three hours after incubation, samples were collected randomly from the petri plates, placed in plancettes and frozen with a propane-nitrogen jet freezer.

Selectivity of insecticides to the egg parasitoid Trichogramma galloi Zucchi, 1988, (Hym., Trichogrammatidae)

2001 ◽  
Vol 125 (1-2) ◽  
pp. 37-43 ◽  
Author(s):  
F. L. Consoli ◽  
P. S. M. Botelho ◽  
J. R. P. Parra
Keyword(s):  
Egg Parasitoid
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