Temperature impact on the phenology of Nesidiocoris tenuis feeding on Tetranychus urticae: simulation through life cycle modelling

2021 ◽  
Author(s):  
O. Gavkare ◽  
P. L. Sharma ◽  
R. S. Chandel ◽  
S. C. Verma ◽  
B. B. Fand ◽  
...  
Keyword(s):  
Life Cycle ◽  
Tetranychus Urticae ◽  
Nesidiocoris Tenuis ◽  
Temperature Impact

Comparative bioactivity of essential oils from two Mentha pulegium (Lamiaceae) chemotypes against Aphis gossypii, Aphis spiraecola, Tetranychus urticae and the generalist predator Nesidiocoris tenuis

2019 ◽  
Vol 47 (5) ◽  
pp. 683-692 ◽  
Author(s):  
Dimitris M. Papadimitriou ◽  
Eleftherios A. Petrakis ◽  
Konstantina A. Arvaniti ◽  
Athanasios C. Kimbaris ◽  
Moschos G. Polissiou ◽  
...  
Keyword(s):  
Essential Oils ◽  
Tetranychus Urticae ◽  
Aphis Gossypii ◽  
Generalist Predator ◽  
Mentha Pulegium ◽  
Aphis Spiraecola ◽  
Nesidiocoris Tenuis

Managing orchard pests.

2021 ◽  
pp. 304-342
Author(s):  
Lynn E. Long ◽  
Gregory A. Lang ◽  
Kaiser Clive
Keyword(s):  
Life Cycle ◽  
Tetranychus Urticae ◽  
Choristoneura Rosaceana ◽  
Drosophila Suzukii ◽  
Arthropod Pests ◽  
Rhagoletis Indifferens ◽  
Orchard Pests ◽  
Caliroa Cerasi

Abstract This chapter provides information on the various economically important insect and arthropod pests causing damage to cherry production, such as Rhagoletis indifferens, Drosophila suzukii, Choristoneura rosaceana, Tetranychus urticae and Caliroa cerasi, among others. Notes on their life cycle, damage and management methods are also presented.

scholarly journals Study on the developmental Stages of Spider Mite (Tetranychus urticae Koch) Infesting Country Bean

1970 ◽  
Vol 16 ◽  
pp. 109-114 ◽  
Author(s):  
Najmoon Naher ◽  
Md Wahedul Islam ◽  
M Khalequzzaman ◽  
Mohd Mainul Haque
Keyword(s):  
Life Cycle ◽  
High Temperature ◽  
Key Words ◽  
Tetranychus Urticae ◽  
Room Temperature ◽  
Spider Mite ◽  
Developmental Stages ◽  
Developmental Rate ◽  
Larval Period ◽  
Tetranychus Urticae Koch

The duration of developmental stages of Tetranychus urticae Koch was studied in different months of a year at room temperature. In addition fecundity of this mite was also observed in winter, autumn and summer seasons. T. urticae eggs hatched to larvae in the shortest duration of 1.07 ± 0.26 days and the longest duration of 11.67 ± 2.33 days in April and January, respectively. The larval period of T. urticae took the shortest time of 0.55 ± 0.50 days in May and 2.93 ± 1.07 days in December. The protonymph transformed to deutonymph in 0.89 ± 0.32 day in May and 3.71 ± 1.94 in December and January. The deutonymph required the shortest duration of 0.92 ± 0.41 days in August and the longest of 10.26 ± 1.48 days in January. The temperature played significant (P<0.001) role on the duration of developmental stages of T. urticae. The high temperature accelerated the developmental rate and reduced the duration of developmental periods. Its life cycle completed within 4.22 ± 0.46 days at 28.53 ± 3.17°C but 28.33 ± 2.36 days at 13.78 ± 2.36°C. A female T. urticae deposited 82.46 ± 4.11 eggs in autumn, 62.96 ± 12.09 eggs in summer and 58.21 ±1 3.65 eggs in winter. Key words: Developmental stages, Tetranychus urticae, temperature, fecundity   DOI:10.3329/jbs.v16i0.3751 J. bio-sci. 16: 109-114, 2008

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).

TEM comparison of osmium vs osmium with potassium ferricyanide secondary fixatives and the impact of secondary fixative temperature on tissue preservation/contrast quality

1996 ◽  
Vol 54 ◽  
pp. 910-911
Author(s):  
J. W. Horn ◽  
B. J. Dovey-Hartman ◽  
V. P. Meador
Keyword(s):  
Osmium Tetroxide ◽  
Potassium Ferricyanide ◽  
Electron Microscopic ◽  
Transmission Electron ◽  
Microscopic Evaluation ◽  
Cacodylate Buffer ◽  
Transmission Electron Microscopic ◽  
Glutaraldehyde Solution ◽  
Temperature Impact ◽  
The Impact

Osmium tetroxide (OsO4) is a universally used secondary fixative for routine transmission electron microscopic evaluation of biological specimens. Use of OsO4 results in good ultrastructural preservation and electron density but several factors, such as concentration, length of exposure, and temperature, impact overall results. Potassium ferricyanide, an additive used primarily in combination with OsO4, has mainly been used to enhance the contrast of lipids, glycogen, cell membranes, and membranous organelles. The purpose of this project was to compare the secondary fixative solutions, OsO4 vs. OsO4 with potassium ferricyanide, and secondary fixative temperature for determining which combination gives optimal ultrastructural fixation and enhanced organelle staining/contrast.Fresh rat liver samples were diced to ∼1 mm3 blocks, placed into porous processing capsules/baskets, preserved in buffered 2% formaldehyde/2.5% glutaraldehyde solution, and rinsed with 0.12 M cacodylate buffer (pH 7.2). Tissue processing capsules were separated (3 capsules/secondary fixative.solution) and secondarily fixed (table) for 90 minutes. Tissues were buffer rinsed, dehydrated with ascending concentrations of ethanol solutions, infiltrated, and embedded in epoxy resin.

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