Analysis of the diversity of endosymbiotic microorganisms in two spider mite species

2019 ◽  
Vol 46 (1) ◽  
pp. 22-30 ◽  
Author(s):  
Fabricio Rainha Ribeiro ◽  
Camilo Elber Vital ◽  
Neilier Rodrigues da Silva Junior ◽  
Rafael de Almeida Barros ◽  
Marliane de Cássia Soares da Silva ◽  
...  
Keyword(s):  
Spider Mite ◽  
Mite Species ◽  
Endosymbiotic Microorganisms

Are Tetranychus macfarlanei Baker & Pritchard and Tetranychus malaysiensis Ehara (Acari: Tetranychidae) one species? Morphological and molecular evidences for synonymy between these two spider mite species and a note on invasiveness of T. macfarlanei on okra and eggplant in India

2017 ◽  
Vol 22 (4) ◽  
pp. 467
Author(s):  
Mahran Zeity ◽  
Nagappa Srinivas ◽  
Chinnamade Channegowde Gowda
Keyword(s):  
Spider Mite ◽  
Morphological Characters ◽  
Molecular Data ◽  
Mite Species ◽  
Coi Gene ◽  
High Similarity ◽  
Mitochondrial Coi ◽  
Mitochondrial Coi Gene ◽  
High Degree ◽  
Degree Of Similarity

Study of morphological characters of Tetranychus macfarlanei Baker & Pritchard and Tetranychus malaysiensis Ehara revealed high similarity by comparing all the important characters in addition to the characters pointed out by Ehara to separate those two species. Molecular phylogeny of seven Indian populations of T. macfarlanei and one population of T. malaysiensis from Philippines along with few distantly related species of Tetranychus was attempted. High degree of similarity between these two species at mitochondrial COI gene (96%) as well as ITS2 (rDNA) (96–99%) region was evident. Based on both morphological features and molecular data, T. malaysiensis is proposed as a junior synonym of T. macfarlanei based on ICZN’s law of priority. Also more female characters are prompted in this study to distinctly discriminate T. macfarlanei from its most resembling species, Tetranychus ludeni Zacher. Tetranychus macfarlanei has emerged as a pest of several cultivated crop plants in India. 

Spider mites (Acari: Tetranychidae) in protected natural areas of Serbia

2018 ◽  
Vol 23 (10) ◽  
pp. 2033
Author(s):  
Ivana Marić ◽  
Irena Međo ◽  
Slobodan Jovanović ◽  
Radmila Petanović ◽  
Dejan Marčić
Keyword(s):  
Plant Species ◽  
Host Plants ◽  
Spider Mite ◽  
Spider Mites ◽  
Mite Species ◽  
Southeast Europe ◽  
Natural Areas ◽  
Relict Species ◽  
Protected Natural Areas ◽  
New Hosts

Despite economic importance of Tetranychidae, knowledge regarding diversity of spider mites in the Balkan Peninsula and Southeast Europe is incomplete, especially in protected natural areas. This study presents diversity of spider mites (Acari: Tetranychidae) collected over five growing seasons at 296 locations in 38 protected natural areas of Serbia. A total of 31 spider mite species were found, 10 from Bryobiinae and 21 from Tetranychinae. The species Eotetranychus fagi Zacher was recorded as new to Serbia and this record was also the first one for Southeast Europe. Spider mites were found on host plants in five basic types as well as many subtypes of terrestrial habitats, with woodland as the most dominant one. A total of 151 plant species from 44 families were recorded as hosts for spider mites including new world records: 60 new hosts for family Tetranychidae and 41 new hosts for 21 spider mite species. Host plants from Rosaceae family harbored the highest number of spider mite species (16). A considerable number of species was found on host plants from the families Betulaceae (11), Asteraceae (10) and Sapindaceae (10). Two cosmopolitan spider mites, Tetranychus urticae Koch and Tetranychus turkestani Ugarov & Nikolskii, were clearly distinguished with 67 (7 new) and 43 (13 new) recorded host species, respectively; among newly recorded hosts for Tetranychidae family, these two mite species were found on 27 and 12 hosts, respectively. After the two most common species, the most striking was the presence of Bryobia praetiosa Koch with 24 (4 new) recorded host plants, followed by Amphitetranychus viennensis (Zacher), Eotetranychus carpini (Oudemans) and Bryobia rubrioculus (Scheuten), with 21 (7 new), 20 (6 new) and 16 (2 new) hosts, respectively. The remaining tetranychids were found on 1–9 host plant species. This study provided the first insight into diversity of tetranychids in Serbian protected areas. Further research in this field should focus on mites from host plants representative of specific areas and habitats, including endangered, endemic and relict species.

scholarly journals Maize inbred line B96 is the source of large-effect loci for resistance to generalist but not specialist spider mites

2021 ◽  
Author(s):  
Huyen Bui ◽  
Robert Greenhalgh ◽  
Gunbharpur S. Gill ◽  
Meiyuan Ji ◽  
Andre H. Kurlovs ◽  
...  
Keyword(s):  
Zea Mays ◽  
Tetranychus Urticae ◽  
European Corn Borer ◽  
Spider Mite ◽  
Insect Pests ◽  
Spider Mites ◽  
Mite Species ◽  
Chromosome 1 ◽  
Corn Borer ◽  
Oligonychus Pratensis

AbstractMaize (Zea mays subsp. mays) yield loss from arthropod herbivory is substantial. While the basis of resistance to major insect herbivores has been comparatively well-studied in maize, less is known about resistance to spider mite herbivores, which are distantly related to insects and feed by a different mechanism. Two spider mites, the generalist Tetranychus urticae, and the grass-specialist Oligonychus pratensis, are notable pests of maize, especially during drought conditions. We assessed the resistance to both mite species of 38 highly diverse maize lines, including several previously reported to be resistant to one or the other mite species. We found that line B96, as well as its derivatives B49 and B75, were highly resistant to T. urticae. In contrast, neither these three lines, nor any others included in our study, were notably resistant to O. pratensis. Quantitative trait locus (QTL) mapping with F2 populations from crosses of B49, B75, and B96 to susceptible B73 identified a large-effect QTL on chromosome 6 as underlying T. urticae resistance in each line, with an additional QTL on chromosome 1 in B96. Genome sequencing and haplotype analyses identified B96 as the apparent sole source of resistance haplotypes. Our study identifies loci for use in maize breeding programs for T. urticae resistance, as well as to assess if the molecular-genetic basis of spider mite resistance is shared with insect pests of maize, as B96 is also among the most resistant known maize lines to several insects, including the European corn borer, Ostrinia nubilalis.Key message Maize(Zea mays subsp. mays) inbred lines B49, B75, and B96 harbor large-effect loci for resistance to the generalist spider mite Tetranychus urticae, but not the specialist Oligonychus pratensis.

scholarly journals Chemical Composition and Acaricidal Effects of Essential Oils ofFoeniculum vulgareMill. (Apiales: Apiaceae) andLavandula angustifoliaMiller (Lamiales: Lamiaceae) againstTetranychus urticaeKoch (Acari: Tetranychidae)

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Asgar Ebadollahi ◽  
Jalal Jalali Sendi ◽  
Alireza Aliakbar ◽  
Jabraeil Razmjou
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Spider Mite ◽  
Mite Species ◽  
Contact Toxicity ◽  
Fumigant Toxicity ◽  
Foeniculum Vulgare ◽  
Nontarget Organisms ◽  
Two Spotted Spider Mite

Utilization of synthetic acaricides causes negative side-effects on nontarget organisms and environment and most of the mite species such as two spotted spider mite,Tetranychus urticaeKoch, are becoming resistant to these chemicals. In the present study, essential oils of fennel,Foeniculum vulgareMill., and lavender,Lavandula angustifoliaMiller, were hydrodistilled using Clevenger apparatus and chemical composition of these oils was analyzed by GC-MS. Anethole (46.73%), limonene (13.65%), andα-fenchone (8.27%) in the fennel essential oil and linalool (28.63%), 1,8-cineole (18.65%), and 1-borneol (15.94%) in the lavender essential oil were found as main components. Contact and fumigant toxicity of essential oils was assessed against adult females ofT. urticaeafter 24 h exposure time. The essential oils revealed strong toxicity in both contact and fumigant bioassays and the activity dependeds on essential oil concentrations. Lethal concentration 50% for the population of mite (LC50) was found as 0.557% (0.445–0.716) and 0.792% (0.598–1.091) in the contact toxicity and 1.876 μL/L air (1.786–1.982) and 1.971 μL/L air (1.628–2.478) in the fumigant toxicity for fennel and lavender oils, respectively. Results indicated thatF. vulgareandL. angustifoliaessential oils might be useful for managing of two spotted spider mite,T. urticae.

scholarly journals Commercial Availability of Predatory Mites

EDIS ◽  
1969 ◽  
Vol 2005 (1) ◽  
Author(s):  
Silvia I. Rondon ◽  
James F. Price ◽  
Oscar E. Liburd ◽  
Roger Francis ◽  
Daniel J. Cantliffe
Keyword(s):  
Spider Mite ◽  
Cropping Systems ◽  
Phytoseiulus Persimilis ◽  
Predatory Mites ◽  
Mite Species ◽  
Cooperative Extension Service ◽  
Publication Date ◽  
University Of Florida ◽  
Broad Mite ◽  
Tetranychus Urticae Koch

Predatory mites such as Neoseiulus californicus McGregor (Fig. 1) and Phytoseiulus persimilis Athias-Henriot (Fig. 2) feed on important fruits and ornamental pests such as the twospotted spider mite (Tetranychus urticae Koch), broad mite (Polyphagotarsonemus (Stenotarsonemus) latus Banks), cyclamen mite (Tarsonemus pallidus L.), and other mite species. These predatory mites are associated with several agricultural cropping systems including strawberries, raspberries, roses, grapes, citrus, ornamentals, and vegetables. Predatory mites have been used as an alternative to miticides on a variety of crops. Their commercial availability is crucial. This document is HS1000, one of a series of the Horticultural Sciences Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: November 2004.

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