Biological models of two acarine predators of the grain mite, Acarus siro L.

1977 ◽  
Vol 55 (8) ◽  
pp. 1312-1323 ◽  
Author(s):  
T. Burnett
Keyword(s):  
Age Structure ◽  
Population Model ◽  
Relative Importance ◽  
Biological Models ◽  
Predator Prey ◽  
Interacting Species ◽  
Acarus Siro ◽  
Predator Attack ◽  
Cheyletus Eruditus ◽  
Blattisocius Dentriticus

A biological model of predation was developed using granular food held in closely packed screen trays to propagate the grain mite, Acarus Siro L., and two of its predators, Blattisocius dentriticus (Berl.) and Cheyletus eruditus (Schrank). Both predators limited prey abundance. Cannibalism among predators, particularly C. eruditus, was an important factor in ensuring the survival of the prey and predator populations. Cheyletus eruditus eliminated B. dentriticus when the two species were propagated in the same experimental universe. Cyclicity and dispersion of the interacting species appeared to result more from the initial age structure and from dispersion of the prey than from predator attack. A population model was used to assess the relative importance of the population components of A. siro and C. eruditus in the simplified predator–prey interactions.

A Technique for Maintaining Acarine Predator-Prey Populations

1960 ◽  
Vol 92 (3) ◽  
pp. 234-237 ◽  
Author(s):  
T. Burnett
Keyword(s):  
Growth Forms ◽  
Predator Prey ◽  
Acarus Siro ◽  
Large Numbers ◽  
Cheyletus Eruditus ◽  
Prey Populations

Experiments with the growth-forms of acarine predator and prey populations require a constant supply of both species. This note describes a technique used for maintaining large numbers of Tyrophagus castellanii (Hirst) and its predator Melichares dentriticus (Berl.) and of Acarus siro L. and its predator Cheyletus eruditus (Schrank)

scholarly journals MODELING THE DYNAMICS OF THE PREDATOR- PREY COMMUNITY WITH THE PREY AGE STRUCTURE AND THE WITHDRAWAL

2021 ◽  
Vol 24 (2-3) ◽  
pp. 209-212
Author(s):  
O.L. Revutskaya
Keyword(s):  
Population Size ◽  
Discrete Time ◽  
Age Structure ◽  
Older Age ◽  
Predator Population ◽  
Age Classes ◽  
Time Model ◽  
Predator Prey ◽  
Discrete Time Model ◽  
Interacting Species

The paper studies the dynamic modes of the predator-prey community discrete-time model taking into account the prey age structure and the withdrawal. The investigated system is a modification of the Nicholson-Bailey model. The author has considered the cases of withdrawal from the prey younger or older age class, or from the prey population of two- age classes, or from the predator population. It is studied conditions of stable coexistence of interacting species and scenarios of the population size oscillatory modes occurrence.

AN ACARINE PREDATOR–PREY POPULATION INFESTING STORED PRODUCTS

1964 ◽  
Vol 42 (4) ◽  
pp. 655-673 ◽  
Author(s):  
T. Burnett
Keyword(s):  
Age Structure ◽  
Stored Products ◽  
Tyrophagus Putrescentiae ◽  
Predator Prey ◽  
Prey System ◽  
Number Of Factors ◽  
Large Fluctuations ◽  
Blattisocius Dentriticus ◽  
Prey Populations

Populations of the stored product mite Tyrophagus putrescentiae (Schrank) and its predator Blattisocius dentriticus (Berl.) were propagated in two experimental universes. Although the predator determined the size of the prey populations, the densities of both species fluctuated with peaks of abundance occurring every 6 to 8 weeks. A number of factors modified, to some extent, the role of "predator searching" as a mechanism controlling both the average densities and fluctuations in abundance of the two species. With large fluctuations in the abundance of the prey there was a pronounced cycle in the age structure of the predator and prey populations. The larger stages of the prey were largely immune to attack by the predator. Individuals of the predator developed to about one-half their normal size when the prey were scarce. The combination of immune stages of the prey and adjustment of predators to scarcity of prey ensured the coexistence of the predator–prey system. Contamination of experimental populations by psocids was one of the major hazards in rearing the populations for extended periods.

scholarly journals Evolution in interacting species alters predator life-history traits, behaviour and morphology in experimental microbial communities

2020 ◽  
Vol 287 (1928) ◽  
pp. 20200652
Author(s):  
Johannes Cairns ◽  
Felix Moerman ◽  
Emanuel A. Fronhofer ◽  
Florian Altermatt ◽  
Teppo Hiltunen
Keyword(s):  
Life History ◽  
Prey Species ◽  
Rapid Evolution ◽  
Prey Type ◽  
Automated Image Analysis ◽  
Foraging Efficiency ◽  
Predator Prey ◽  
Evolving Systems ◽  
Interacting Species ◽  
Evolutionary Response

Predator–prey interactions heavily influence the dynamics of many ecosystems. An increasing body of evidence suggests that rapid evolution and coevolution can alter these interactions, with important ecological implications, by acting on traits determining fitness, including reproduction, anti-predatory defence and foraging efficiency. However, most studies to date have focused only on evolution in the prey species, and the predator traits in (co)evolving systems remain poorly understood. Here, we investigated changes in predator traits after approximately 600 generations in a predator–prey (ciliate–bacteria) evolutionary experiment. Predators independently evolved on seven different prey species, allowing generalization of the predator's evolutionary response. We used highly resolved automated image analysis to quantify changes in predator life history, morphology and behaviour. Consistent with previous studies, we found that prey evolution impaired growth of the predator, although the effect depended on the prey species. By contrast, predator evolution did not cause a clear increase in predator growth when feeding on ancestral prey. However, predator evolution affected morphology and behaviour, increasing size, speed and directionality of movement, which have all been linked to higher prey search efficiency. These results show that in (co)evolving systems, predator adaptation can occur in traits relevant to foraging efficiency without translating into an increased ability of the predator to grow on the ancestral prey type.

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.

scholarly journals Arthropod Infestation in Samples of Stored Seeds in the Czech Republic

2011 ◽  
Vol 40 (No. 1) ◽  
pp. 11-16 ◽  
Author(s):  
Z. Kučerová ◽  
P. Horák
Keyword(s):  
Czech Republic ◽  
Predatory Mite ◽  
Tyrophagus Putrescentiae ◽  
The Czech Republic ◽  
Grass Seed ◽  
Acarus Siro ◽  
Cheyletus Eruditus

Twenty-one types of seed samples (mainly vegetable and grass seed) were analysed in laboratory and 60% arthropod infestation (14 Acarina, 5 Psocoptera species) was found. The seeds of beet, grass, onion, radish and lettuce were most sensitive to infestation. Acarus siro was a dominant mite pest from all aspects (frequency, abundance and seed diversity infestation), followed by Tyrophagus putrescentiae, Tarsonemus granarius and Lepidoglyphus destructor. Cheyletus eruditus was a dominant predatory mite. Lepinotus patruelis was the most frequent psocid pest.  

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