scholarly journals FEEDING PREFERENCE AND BIOLOGICAL TRAITS OF PANONYCHUS ULMI ON LEAVES OF APPLE AND GRAPEVINE

2021 ◽  
Vol 25 (01) ◽  
pp. 80-89
Author(s):  
Darliane Evangelho Silva ◽  
◽  
Joseane Moreira do Nascimento ◽  
Rita Tatiane Leão da Silva ◽  
Julia Jantsch Ferla ◽  
...  

Panonychus ulmi is widely distributed in apple and vineyards worldwide. In Brazil, the first damages were observed in apple orchard and later in grapevine. The aim of this study was to evaluate feeding preference and biological traits of P. ulmi on different grapevine varieties (BRS Vitória, Merlot and Concord) and apple (Fuji) under laboratory conditions. The food preference experiment did not reveal any significant differences, but P. ulmi presented the lowest rate of oviposition in the Concord varietal, demonstrating an oviposition preference in V. vinifera varietals and general preference for apple. Mortality was significantly different between varieties, with the lowest mortality on apple and higher oviposition rate in this host. Higher viability occurred on Merlot and apple. Feeding preference studies are scarce, considering phytophagous mites and grape varieties, although they are important in the development of pest control strategies.

2021 ◽  
Vol 4 (1) ◽  
pp. 152-159
Author(s):  
Yves Pierre Harry Dalleinne ◽  
◽  
Aline Giothi ◽  
Rosane Betina Wandscheer ◽  
Ivonete Hoss ◽  
...  

During their development, insects can suck plant structures like seeds and fruits being the preferred structures. The study aims to monitor the eating habits of these insects are relevant mainly in terms of food preference and development. The objective of this work was to analyze the feeding preference of Euschistus heros (brown stink bug) fed with 5 diets. The different diets studied resulted in insects in adult, with significant differences in the length of the nymph period, differences in the weights of males and females and variation in survival during the experiment.


1973 ◽  
Vol 105 (12) ◽  
pp. 1519-1523 ◽  
Author(s):  
H. J. Herbert ◽  
K. P. Butler

AbstractA study was conducted in a mature apple orchard in Nova Scotia to compare the density of eggs of the European red mite, Panonychus ulmi (Koch), over the whole tree to their density on a selected area using a random selection and standard selection technique. Both methods provided nearly equivalent estimates of population densities for generations 2 and 4 but not for generation 3. The population estimates based on sampling from the selected area overestimated the whole tree population.Optimum allocation of sampling resources may be obtained by sampling a small number of clusters from each of a large number of trees.


1970 ◽  
Vol 102 (5) ◽  
pp. 592-601 ◽  
Author(s):  
K. H. Sanford ◽  
H. J. Herbert

AbstractUtilizing the knowledge of their direct effects, the materials ryania, carbaryl, and Animert V-101 applied to a uniformly distributed population of the European red mite, Panonychus ulmi (Koch), altered the populations in plots in an apple orchard. Trends after treatment in both host mite and predator populations were assessed. Supplementary applications of the acaricides Animert V-101 or dicofol directed against certain generations of P. ulmi controlled outbreaks and altered the faunal levels during the following season. Ryania was largely innocuous to most species of predators with the exception of Atractotomus mali (Meyer) and Diaphnocoris spp., carbaryl was detrimental to most predacious species, and Animert V-101, while selectively toxic to phytophagous mites, was innocuous to all predacious insects and Typhlodromus pyri Scheuten.Phytophagous mite populations may be altered to almost prescribed levels with pesticides when the predator populations are known. This allows selective chemicals to be used to complement the predator effect and maintain red mites below the threshold of damage.


2009 ◽  
Vol 44 (3) ◽  
pp. 187-192
Author(s):  
Zheng-Yan Wang ◽  
Jian-Chu Mo

Objectives of this research were to evaluate the effect of larval experience on feeding preference of larvae and the effect of larval and pupal experience on oviposition preference of females in Musca domestica L. and Chrysomya megacephala F. Dietary experience from hatch to test significantly influenced feeding preference of the second-instar larvae in M. domestica (P < 0.01), but did not in C. megacephala. The larval dietary and pupal experience did not change the oviposition preference of C. megacephala, and experienced gravid females laid all of their eggs on pork muscle. Larval feeding regimen had no effect on oviposition preference of subsequent females in M. domestica. However, the pupal experience in M. domestica significantly influenced the oviposition preference of subsequent females, and M. domestica females from pupae matured on wheat bran laid significantly more eggs on wheat bran than those that matured on pork muscle, or filter paper whether pupae were washed or not (P < 0.01). These results demonstrated that host-selection behavior in M. domestica was shaped by preimaginal experience according to the chemical legacy hypothesis.


2008 ◽  
Vol 68 (4) ◽  
pp. 837-842 ◽  
Author(s):  
FS. Albuquerque ◽  
MC. Peso-Aguiar ◽  
MJT. Assunção-Albuquerque

The goal of this study was to document the distribution and establishment A. fulica such as their feeding preference and behavior in situ. The study was carried out at the city of Lauro de Freitas, Bahia state, Brazil, between November 2001 and November 2002. We used catch per unit effort methods to determine abundance, distribution, habitat choice and food preferences. The abundance and distribution of A. fulica was most representative in urban area, mainly near to the coastline. Lots and house gardens were the most preferred sites during active hours. The results indicated that A. fulica started their activity at the end of the evening and stopped in mid-morning. Their preferred food were vascular plants such as Hibiscus syriacus, Ricinus communis, Carica papaya, Galinsonga coccinea, Lippia alba, Ixora coccinea, Musa parasidisiaca, Mentha spicata and Cymbopogon citrates. Our results indicate that A. fulica are well adapted and established in this city and modified environments facilitate their establishment and dispersion. However, human perturbation, such as clearance of lots could be limiting for the persistence of A. fulica populations.


2023 ◽  
Vol 83 ◽  
Author(s):  
M. W. Aslam ◽  
M. Wajid ◽  
A. Waheed ◽  
S. Ahmad ◽  
K. Jafar ◽  
...  

Abstract The present study describes the haematological profile, feeding preference, and comparison of morphometric characters of blue rock pigeon (Columba livia) breeding pairs. For this purpose, 25 pairs (25 samples per sex) were sampled through Mist nets from district Okara and Bahawalnagar, Punjab, Pakistan. Birds were then anaesthetized with a combination of ketamine HCL (10 mg/kg) and diazepam (0.2 mg/kg) and subjected to morphometric measurements. 5µL blood also was taken from the jugular vein of each anaesthetized bird for haematological analysis. Few pairs were also dissected to remove gastrointestinal tracts (GITs) for food preferences. Results revealed that there are no significant differences in the haematological parameters and feeding preference of breeding pairs of Columba livia. The gut analysis further revealed, the major portion of gut contents consisted of pea and corn in most of the pairs. Regarding the mensural measurements, significant differences were recorded in the body weight, length of the longest primary feather, and chest circumference, whereas the rest of the studied parameters remain nonsignificant between sexes. So, it is concluded that apart from 3 morphometric parameters (body weight, length of longest primary feather and chest circumference), both sexes are alike in term of morphometry, haematology and food preference.


1962 ◽  
Vol 94 (4) ◽  
pp. 365-375 ◽  
Author(s):  
W. H. Foott

Two principal pests of apple and peach trees in southwestern Ontario are the European red mite, Panonychus ulmi (Koch), and the two-spotted spider mite, Tetranychus telarius (L.). Usually only P. ulmi is present on the trees in large numbers during the spring and early summer, at which time T. telarius lives predominantly on the ground cover. In August, many T. telarius move from the ground cover to the trees, and large numbers of both species may then be present. In mite control investigations in an apple orchard at the Harrow Research Station, T. telarius moved onto the trees, especially in the central plots, regardless of the acaricides previously applied or the numbers of P. ulmi that were or had been present. This phenomenon posed the question of whether the residual effects of acaricides applied to the trees were mainly responsible for the size of P. ulmi populations in the central plots, or whether competition resulting from the ingress of T. telarius was partially responsible.


2013 ◽  
Vol 41 (8) ◽  
pp. 1379-1385 ◽  
Author(s):  
Ting-Ting Ji ◽  
Yi Ding ◽  
Huan Deng ◽  
Ma Jing ◽  
Qi Jiang

Drawing upon the theories of conceptual metaphors and embodiment, in the present study we systematically examined the metaphorical link between spicy tastes and anger. In terms of personality, the results showed that participants presumed strangers who liked spicy foods (e.g., chili peppers) were more easily angered (Experiment 1). In addition, we found that people who are higher in trait anger are more likely to have a spicy food preference (Experiment 2). The findings support a metaphorical mapping between taste and personality processes.


2017 ◽  
Vol 163 (1) ◽  
pp. 101-111 ◽  
Author(s):  
Gonzalo Martínez ◽  
María Victoria Finozzi ◽  
Gissel Cantero ◽  
Roxina Soler ◽  
Marcel Dicke ◽  
...  

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