Occurrence of the astigmatid mite Tyrophagus in estuarine benthic sediments

2001 ◽  
Vol 81 (5) ◽  
pp. 889-890 ◽  
Author(s):  
David J. Marshall ◽  
Renzo Perissinotto ◽  
Christian Nozais ◽  
Carla-Jane Haines ◽  
Şerban Procheş
Keyword(s):  
Southern Africa ◽  
Mite Species ◽  
Estuarine Sediments ◽  
Tyrophagus Putrescentiae ◽  
Marine Systems ◽  
Estuarine Systems ◽  
Benthic Sediments ◽  
Eastern Seaboard

The astigmatid mite species, Tyrophagus putrescentiae, was found to occur in meiobenthic collections from the Mdloti Estuary on the eastern seaboard of southern Africa. To examine whether these mites are actually components of estuarine systems or the result of contamination of collecting and laboratory materials, special sterilization procedures were incorporated into the collection protocol. Samples employing sterilization procedures still yielded Tyrophagus mites, providing evidence for their existence in the estuarine sediments. The origination of these mites in estuarine and fringe marine systems, in general, is discussed. These findings are significant in terms of the potential trophic importance of Tyrophagus mites.

Mites in dried figs of Turkey: diversity, species composition and density

2019 ◽  
Vol 24 (6) ◽  
pp. 992-997 ◽  
Author(s):  
Hulya Dizlek ◽  
Mehmet Karagoz ◽  
Farid Faraji ◽  
Ibrahim Cakmak
Keyword(s):  
Species Composition ◽  
Mite Species ◽  
Predatory Mite ◽  
Infestation Rate ◽  
Pest Species ◽  
Tyrophagus Putrescentiae ◽  
Acarus Siro ◽  
Blattisocius Tarsalis ◽  
Cheyletus Eruditus ◽  
Over Time

This study was conducted to determine mite species in dried figs in Aydin, Turkey between August 2014 and November 2016. A total of 141 dried fig samples were taken from producers’ storage, commercial storages and fig processing factories in Buharkent, Germencik, Incirliova, Kocarli, Kosk, Kuyucak, Merkez, Nazilli, Sultanhisar and Yenipazar districts. In addition, 24 dried fig samples were kept in storage for 8 months and the changes in mite species composition and their densities in stored figs were determined. As a result, 8 mite species belonging to 3 orders and 5 families were identified from the dried figs. Acarus siro L., Carpoglyphus lactis (L.), Glycyphagus destructor (Schrank), G. domesticus (De Geer) and Tyrophagus putrescentiae (Schrank) as pest species, and Blattisocius tarsalis (Berlese), B. mali (Oudemans) and Cheyletus eruditus (Schrank) as predatory mite species were found. Out of 141 samples, 133 were infested with mites and the infestation ratio was 94.3%. Tyrophagus putrescentiae was the most common pest species with an infestation rate of 72.3%, followed by C. lactis with 34.8%, A. siro, G. destructor and G. domesticus with 0.7% contamination, respectively. Carpoglyphus lactis was found to have the highest density with 10,488 individuals/kg in contaminated fig samples. Blattisocius tarsalis was the most common predatory mite species with an infestation rate of 77.3%. Blattisocius mali and C. eruditus were found in 9.2% and 4.3% of dried figs, respectively. This study showed that the dried fig samples kept in storage were always vulnerable to contamination with mites. Mite species composition and their densities also fluctuated over time.

Mite fauna associated with bird nests in Southern Brazil

2018 ◽  
Vol 23 (3) ◽  
pp. 426 ◽  
Author(s):  
Darliane Evangelho Silva ◽  
Guilherme Liberato Da Silva ◽  
Joseane Moreira Do Nascimento ◽  
Noeli Juarez Ferla
Keyword(s):  
Wild Bird ◽  
Dermatophagoides Pteronyssinus ◽  
Mite Species ◽  
Southern Brazil ◽  
Tyrophagus Putrescentiae ◽  
Urban Zone ◽  
Rural And Urban ◽  
Rural Zone ◽  
Veterinary Importance ◽  
Ornithonyssus Bursa

Interactions between birds and mites have allowed mites to act as ectoparasites or to be associated with the micro-environments of nests. The aim of this study was to identify the mite fauna associated with wild bird nests in the rural and urban zones of different environments, and analyze the importance of birds as potential carriers of these organisms to households or poultry houses. In the rural zone, the following environments were assessed: Countryside (C), Forest (F), Aquatic (A), Orchards (O), and Residential (R), and in the urban zone, a similar division was used (C, O, R), with absence of environments (A) and (F). Apart from the Suborder Oribatida found in the 52 bird nests sampled in both zones, a total of 24,274 mites were collected and identified as 67 species in 34 families. There was a predominance of mites in the rural zone (90%), with higher richness in (C) of both zones and higher abundance in (R) and (A) of the rural zone and (O) of the urban zone. Mite species of medical-veterinary importance with the highest abundance were Ornithonyssus bursa in nests of Certhiaxis cinnamomeus and Columbina picui; Tyrophagus putrescentiae in nests of Columbina picui and Pitangus sulphuratus; and Dermatophagoides pteronyssinus in nests of Troglodytes musculus and Pitangus sulphuratus. This study showed that the wild bird nests are depositories of mites, including ectoparasites of medical-veterinary importance.

scholarly journals Diversity of House Dust Mite Species in Xishuangbanna Dai, a Tropical Rainforest Region in Southwest China

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Jing-Miao Yu ◽  
Qing-Hua Luo ◽  
Jin-Lu Sun ◽  
Cun-Lian Shi ◽  
Jia Yin ◽  
...  
Keyword(s):  
Significant Variation ◽  
Tropical Rainforest ◽  
Southwest China ◽  
Mite Species ◽  
Dust Mites ◽  
Tyrophagus Putrescentiae ◽  
Species Determination ◽  
Blomia Tropicalis ◽  
Dust Mite ◽  
Mite Family

Purpose. To survey the species diversity of home dust mites (HDM) in Xishuangbanna, a tropical rainforest region in Southwest China.Methods. From August 2010 to January 2011, mite-allergic patients and healthy controls were invited to participate. Dust samples from the patients’ homes were collected, and mites in the samples were isolated. Permanent slides were prepared for morphologically based species determination.Results. In total, 6316 mite specimens of morphologically identifiable species were found in 233 dust samples taken from 41 homes. The result shows that the mite family of Pyroglyphidae occupied the highest percentage of the total amount of mites collected, followed by Cheyletidae family. The most common adult Pyroglyphidae mites wereDermatophagoides(D.)farinae,D. pteronyssinus, andD. siboney. The most common mites found from other families wereBlomia tropicalis,Tyrophagus putrescentiae, andAleuroglyphus ovatus. Four main allergenic dust mite speciesD. farinae,D. pteronyssinus,D. siboney, andBlomia tropicaliswere found to be coinhabiting in 6/41 homes.Conclusion. The HDM population in homes in Xishuangbanna, a tropical rainforest region in Southwest China, has its own characteristics. It has rich dust mite species and the dust mite densities do not show significant variation across seasons.

scholarly journals First record of Tyrophagus putrescentiae (Schrank) (Acari: Acaridae) in soybean plants under no tillage in Minas Gerais, Brazil

2007 ◽  
Vol 37 (3) ◽  
pp. 876-877 ◽  
Author(s):  
Charles Martins de Oliveira ◽  
Denise Návia ◽  
Marina Regina Frizzas
Keyword(s):  
First Record ◽  
Mite Species ◽  
Minas Gerais ◽  
Stored Products ◽  
No Tillage ◽  
Tyrophagus Putrescentiae ◽  
Glycine Max L ◽  
Veterinary Importance ◽  
Commercial Crop ◽  
Soybean Plants

Tyrophagus putrescentiae (Schrank) is a mite species of economic and medical-veterinary importance, usually found associated with stored products. Presence of this mite was observed in the stems of soybean [Glycine max (L.) Merr.] plants originated from a under non tillage commercial crop in 2003/2004, in the municipal district of Unaí, State of Minas Gerais, Brazil. This is the first record of T. putrescentiae occurring in soybean plants under field conditions in the world.

scholarly journals New species of phytoseiid mites from Mozambique and Malawi

Zootaxa ◽  
2002 ◽  
Vol 79 (1) ◽  
pp. 1
Author(s):  
I. D. ZANNOU ◽  
G. J. DE MORAES ◽  
R. HANNA
Keyword(s):  
New Species ◽  
Southern Africa ◽  
Mite Species ◽  
Phytoseiid Mites ◽  
The Family

Two new mite species of the family Phytoseiidae (Acari: Mesostigmata) are described from southern Africa: Typhlodromalus parcidentatus n. sp. from Mozambique and Typhlodromus (Anthoseius) malawiensis n. sp. from Malawi.

scholarly journals The trophic roles of microzooplankton in marine systems

2008 ◽  
Vol 65 (3) ◽  
pp. 325-331 ◽  
Author(s):  
Albert Calbet
Keyword(s):  
Marine Ecosystems ◽  
Size Class ◽  
Grazing Impact ◽  
Marine Science ◽  
Primary Producers ◽  
Marine Systems ◽  
Final Remark ◽  
Estuarine Systems

Abstract Calbet, A. 2008. The trophic roles of microzooplankton in marine systems. – ICES Journal of Marine Science, 65: 325–331. Microzooplankton (here defined as <200 µm grazers) are key components of marine foodwebs. Their grazing significantly affects primary producers and usually exceeds that of mesozooplankton. However, our knowledge of the detailed roles that microzooplankton taxa play in marine ecosystems is surprisingly limited. Here, I identify the main protists responsible for most of the grazing impact on phytoplankton in two contrasting marine ecosystems: oligotrophic waters and productive waters, such as upwelling systems, spring blooms, and other blooms in nearshore and estuarine systems. Evidence indicates that pico- and nano-sized flagellates, which are routinely included with the microzooplankton size class of protists, appear to be the main grazers of phytoplankton in oligotrophic habitats, whereas heterotrophic and mixotrophic dinoflagellates are candidates for the dominant grazing impact in upwelling and other productive ecosystems. Microzooplankton are also important contributors to mesozooplankton diet, especially in oligotrophic areas, although the strength of the mesozooplankton–microzooplankton link is traditionally overlooked in plankton studies. As a final remark, this review emphasizes the need to develop suitable methods for studying the role of microbial grazers in the dynamics of marine ecosystems.

Selective biorational treatments for managing the storage mites, Tyrophagus putrescentiae (Schrank) and Aleuroglyphus ovatus (Troupeau) under laboratory conditions

2019 ◽  
Vol 24 (3) ◽  
pp. 337 ◽  
Author(s):  
Anar Bakr ◽  
Shady Selim
Keyword(s):  
Reduction Potential ◽  
Mite Species ◽  
Tyrophagus Putrescentiae ◽  
Storage Mites ◽  
Complete Control ◽  
Predator Prey ◽  
Abiotic Conditions ◽  
Reduction Efficiency ◽  
Storage Mite ◽  
Cheyletus Malaccensis

Mites have lately emerged as economically important pests of stored products. Recently, addition of natural origin compounds individually or as a combination with predators have provided a considerable value for controlling these pests. In this study, the efficacy of the bacterium-derived pesticides, spinosad and spinetoram, and the combination of each of them with the predator Cheyletus malaccensis Oudemans was evaluated against two storage mite pests, Tyrophagus putrescentiae (Schrank) and Aleuroglyphus ovatus (Troupeau) under optimal abiotic conditions for pest development. After 21d, the terminal density was estimated for both astigmatid mite species exposed to diet (experiment I) treated with either spinosad or spinetoram (concentrations range of 0.01-2 ppm).  Estimation was also done with diet (experiment II) treated with either spinosad or spinetoram (0.5 ppm) and/or the predator at initial predator/prey ratio (0.02). The density of predator was also determined after 21 days. Application of spinosyns significantly reduced population of T. putrescentiae and A. ovatus. The reduction potential increased with increasing concentration. Complete control of T. putrescentiae and A. ovatus was achieved by the application of spinosad at 1 and 2 ppm, respectively. As measured by rC50 and rC90 (concentration for 50% and 90% suppress of population in comparison to control), spinosad was more toxic to T.  putrescentiae and A. ovatus than spinetoram. Furthermore, T. putrescentiae was more susceptible to spinosad than A. ovatus. Conversely, it was less susceptible to spinetoram than A. ovatus. The populations of both mite species were successfully suppressed by the sole application of C. malaccensis. Although the density of predatory mites was not affected by the presence of 0.5 ppm spinosad, it was almost eradicated by spinetoram at 0.5 ppm. A combination of spinosad at 0.5 ppm with two individuals of C. malaccensis mites (ratio 0.02) outperformed spinosad used alone at the same former concentration in reduction efficiency of the pest populations by 12% for T.  putrescentiae and 25% for A. ovatus within 21 days.

scholarly journals Five New Gastropoda (Casmaria, Sassia, Kilburnia, Quasimitra and Calliostoma) from the Eastern Seaboard of Southern Africa and a Revision of Mitra boswellae

The Festivus ◽  
2019 ◽  
Vol 51 (3) ◽  
pp. 198-217
Author(s):  
Roy Aikin ◽  
Alan Seccombe
Keyword(s):  
South Africa ◽  
New Species ◽  
Southern Africa ◽  
Eastern Cape Province ◽  
Eastern Cape ◽  
Kwazulu Natal ◽  
The Status ◽  
Eastern Seaboard

Five new gastropods are described from the Eastern Seaboard of Southern Africa. These Molluscs include Casmaria natalensis new species (from Kwazulu-Natal, South Africa), Sassia mozambicana new species (from Mozambique), Kilburnia emmae new species (from Eastern Cape Province, South Africa), Quasimitra rubrolaterculus new species (from Kwazulu-Natal, South Africa), and Calliostoma margaretae new species (from Kwazulu-Natal, South Africa). The status of Mitra boswellae is reviewed.

Development of Cheyletus malaccensis (Acari: Cheyletidae) feeding on mite species found in commercial poultry systems: Megninia ginglymura (Acari: Analgidae) and Tyrophagus putrescentiae (Acari: Acaridae)

2016 ◽  
Vol 21 (10) ◽  
pp. 1604 ◽  
Author(s):  
Juliana Granich ◽  
Tamara Bianca Horn ◽  
Júlia Horn Körbes ◽  
Maicon Toldi ◽  
Guilherme Liberato Da Silva ◽  
...  
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Control Strategies ◽  
Mite Species ◽  
Reproductive Rate ◽  
Tyrophagus Putrescentiae ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Commercial Poultry ◽  
Cheyletus Malaccensis

Intensive egg production affects the welfare of confined laying hens, which increases the risk of epidemics. Ectoparasitic hematophagous mites and saprophagous feather mites cause low productivity and decreased egg quality. This study aimed to compare the biology of Cheyletus malaccensis (Oudemans) (Prostigmata: Cheyletidae) feeding on the prey Megninia ginglymura (Mégnin) (Astigmata: Analgidae) and Tyrophagus putrescentiae (Schrank) (Astigmata: Acaridae) in order to support the potential use of this predator in biological control strategies in the poultry industry. The study started with 30 eggs of C. malaccensis, isolated in experimental units, which developed into their different stages while feeding on the feather mite M. ginglymura and the stored product mite T. putrescentiae at 25±1ºC, 80±5% relative humidity and 12-hour photoperiod. Immature stages were evaluated three times a day and the adult stage once a day. Adult females were unmated. Cheyletus malaccensis feeding on M. ginglymura resulted in a higher fertility rate, with 310.7±45.8 eggs/female, than with T. putrescentiae as prey, with 32.7±4.5 eggs/female. Furthermore, the oviposition period was higher feeding on M. ginglymura, 53.0±6.3 days, than on T. putrescentiae, 12.6±1.9 days. The net reproductive rate (Ro), the innate capacity for increase (rm), the mean generation time (T) and the finite rate of increase (λ) were higher for the generation fed on M. ginglymura. Cheyletus malaccensis is a likely natural enemy of M. ginglymura, and it is able to develop and reproduce while feeding exclusively on it. 

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