Interspecific interference in the closely related predatory mites Neoseiulus womersleyi and Neoseiulus longispinosus (Acari: Phytoseiidae)

2017 ◽  
Vol 43 (4) ◽  
pp. 296-301 ◽  
Author(s):  
M. S. Ullah ◽  
R. Sugimoto ◽  
T. Matsuda ◽  
C.-H. Wang ◽  
M. Kongchuensin ◽  
...  
Keyword(s):  
Predatory Mites ◽  
Neoseiulus Womersleyi ◽  
Neoseiulus Longispinosus

Temperature-Dependent Demography of Two Closely Related Predatory Mites Neoseiulus womersleyi and N. longispinosus (Acari: Phytoseiidae)

2017 ◽  
Vol 110 (4) ◽  
pp. 1533-1546 ◽  
Author(s):  
Reo Sugawara ◽  
Mohammad Shaef Ullah ◽  
Chyi-Chen Ho ◽  
Ayhan Gökçe ◽  
Hsin Chi ◽  
...  
Keyword(s):  
Predatory Mites ◽  
Temperature Dependent ◽  
Neoseiulus Womersleyi

scholarly journals Morphological ontogeny and molecular analyses of geographic strains of two closely related Neoseiulus species (Acari: Phytoseiidae)

Acarologia ◽  
2021 ◽  
Vol 61 (2) ◽  
pp. 432-452
Author(s):  
Mohamed W. Negm ◽  
Tomoko Matsuda ◽  
Takumi Kayukawa ◽  
Chyi-Chen Ho ◽  
Yu-Tzu Hsu ◽  
...  
Keyword(s):  
Ribosomal Dna ◽  
Related Species ◽  
Molecular Data ◽  
Predatory Mites ◽  
Nuclear Ribosomal Dna ◽  
Immature Stages ◽  
Closely Related Species ◽  
Molecular Analyses ◽  
Neoseiulus Longispinosus ◽  
Morphological And Molecular Data

The predatory mites, Neoseiulus longispinosus (Evans) and N. womersleyi (Schicha) (Phytoseiidae) are two morphologically close species. Although they can be mainly separated by the length of the dorsal seta S5, misidentifications may occur. The present study investigated various strains of the two closely related species collected from Japan, Taiwan and/or Thailand using a combination of morphological and molecular data. We described and illustrated the adults and immature stages. We also sequenced the 28S region of nuclear ribosomal DNA to determine whether these strains represent different species. The two species could be clearly separated based on the length of seta S5 and the ratio of setae Z5/S5. In a 28S tree, the examined strains also formed separate clades with 100% bootstrap values. We conclude that a combination of different methods is often necessary to precisely distinguish these closely related taxa.

scholarly journals Delayed mite hatching in response to mechanical stimuli simulating egg predation attempts

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Kaoru Fukuse ◽  
Shuichi Yano
Keyword(s):  
Predation Risk ◽  
Predatory Mites ◽  
Predatory Mite ◽  
Aquatic Systems ◽  
Mechanical Stimuli ◽  
Egg Predation ◽  
Neoseiulus Womersleyi ◽  
Proximate Factor ◽  
Delayed Hatching ◽  
Gravity Direction

Abstract Delayed or induced hatching in response to predation risk has been reported mainly in aquatic systems, where waterborne cues from predators and injured neighbouring eggs are available. Newly emerged larvae of the terrestrial predatory mite Neoseiulus womersleyi are vulnerable to predation by con- and heterospecific predatory mites, whereas their eggs are not. We examined whether N. womersleyi embryos delay hatching in response to artificial mechanical stimuli that simulates egg predation attempts. When embryos near the hatching stage were artificially stimulated every 5 min for 60 min, most stopped hatching for the duration of the 60-min period, whereas unstimulated embryos did not. Stimulated embryos resumed hatching when the treatment was stopped, and the proportion of hatched stimulated embryos caught up with that of unstimulated embryos within 120 min after stimuli stopped. Since hatching did not stop in response to changes in gravity direction, the effect of direct mechanical stimuli on the eggs was considered a proximate factor in delayed hatching. These results suggest that N. womersleyi embryos recognise immediate predation risk via mechanical stimuli, and delay hatching until the predation risk is reduced.

What habitat does spiny snout mite occupy in Tasmania

2015 ◽  
Vol 68 ◽  
pp. 446-446
Author(s):  
D.J. Wilson ◽  
P.J. Gerard
Keyword(s):  
New Zealand ◽  
Sand Dune ◽  
Biocontrol Agent ◽  
Predatory Mites ◽  
Mite Species ◽  
Predatory Mite ◽  
Habitat Specificity ◽  
Nontarget Organisms ◽  
Flea Control ◽  
Potential Biocontrol Agent

Spiny snout mite (Neomolgus capillatus) is a potential biocontrol agent for clover flea (Sminthurus viridis) a white clover pest on dairy farms in warmer and wetter parts of New Zealand In the 1990s this mite was introduced from Brittany France into Tasmania for clover flea control Results during the release programme were highly promising and subsequent anecdotal farmer reports indicate widespread decreases in damage As N capillatus is a predatory mite and already known to attack nontarget organisms habitat specificity will determine whether it could be introduced into New Zealand without risk to native insects To assess this pastures on nine of the original Tasmanian release farms and adjacent nontarget habitats ranging from bush wetlands eucalypt stands to sand dune country were sampled in April 2014 Litter samples were collected heat extracted and mite species identified Neomolgus capillatus was found at effective densities in pastures that had good clover cover Where present it displaced Bdellodes spp mites that are ineffective against clover flea No N capillatus were found in the nontarget habitats all of which lacked clover and contained other predatory mites including Bdellodes spp Therefore the preference by N capillatus for lush pastures makes it an excellent prospect for introduction as a biocontrol agent into clover flea prone regions of New Zealand

scholarly journals Relative potency of a novel acaricidal compound from Xenorhabdus, a bacterial genus mutualistically associated with entomopathogenic nematodes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Gamze Incedayi ◽  
Harun Cimen ◽  
Derya Ulug ◽  
Mustapha Touray ◽  
Edna Bode ◽  
...  
Keyword(s):  
Adult Female ◽  
Entomopathogenic Nematodes ◽  
Field Experiments ◽  
Petri Dish ◽  
Phytoseiulus Persimilis ◽  
Mortality Rates ◽  
Predatory Mites ◽  
The Novel ◽  
Compound Identification ◽  
Mutant Strains

AbstractOur study aimed to identify the novel acaricidal compound in Xenorhabdus szentirmaii and X. nematophila using the easyPACId approach (easy Promoter Activated Compound Identification). We determined the (1) effects of cell-free supernatant (CFS) obtained from mutant strains against T. urticae females, (2) CFS of the acaricidal bioactive strain of X. nematophila (pCEP_kan_XNC1_1711) against different biological stages of T. urticae, and females of predatory mites, Phytoseiulus persimilis and Neoseiulus californicus, (3) effects of the extracted acaricidal compound on different biological stages of T. urticae, and (4) cytotoxicity of the active substance. The results showed that xenocoumacin produced by X. nematophila was the bioactive acaricidal compound, whereas the acaricidal compound in X. szentirmaii was not determined. The CFS of X. nematophila (pCEP_kan_XNC1_1711) caused 100, 100, 97.3, and 98.1% mortality on larvae, protonymph, deutonymph and adult female of T. urticae at 7 dpa in petri dish experiments; and significantly reduced T. urticae population in pot experiments. However, the same CFS caused less than 36% mortality on the predatory mites at 7dpa. The mortality rates of extracted acaricidal compound (xenocoumacin) on the larva, protonymph, deutonymph and adult female of T. urticae were 100, 100, 97, 96% at 7 dpa. Cytotoxicity assay showed that IC50 value of xenocoumacin extract was 17.71 μg/ml after 48 h. The data of this study showed that xenocoumacin could potentially be used as bio-acaricide in the control of T. urticae; however, its efficacy in field experiments and its phytotoxicity need to be assessed in future.

Effects of botanical acaricides on Raoiella indica and Oligonychus sp. and their toxicity on two species of phytoseiid predatory mites

2021 ◽  
pp. 1-12
Author(s):  
Ángel Nexticapan-Garcéz ◽  
Marcos Cua-Basulto ◽  
Rodolfo Martín-Mex ◽  
Daisy Pérez-Brito ◽  
Alfonso Larqué-Saavedra ◽  
...  
Keyword(s):  
Predatory Mites ◽  
Raoiella Indica
Sign in / Sign up

Export Citation Format

Share Document