Mange Mite Infestation (Sarcoptes, Demodex, Psoroptes, and Chorioptes)

The effects of various seed moisture contents in hulless (cv. Terra) and hulled oats (cv. Random) on susceptibility to mite infestation and on mycofloral growth and germination loss were studied at weekly intervals. Fat acidity values were determined for Terra oats only after 4 wk of storage. Moisture content-relative humidity adsorption and desorption curves were determined for Terra at 22 °C and at relative humidities of 35–100%. Terra oats, which had a higher level of Penicillium infection at 90–100% RH than Random oats, lost viability more rapidly than Random. Fat acidity values of Terra increased rapidly from 35 mg KOH/100 g of seed to 87–118 mg KOH/100 g of seed, only when seeds were stored at 90–100% RH. Terra offered a more favorable substrate for the multiplication of the mites Tyrophagus putrescentiae, Acarus farris, and Lepidoglyphus destructor than did Random. With the exception of susceptibility to mite infestation, safe storage criteria are similar for hulled and hulless oats at usual moisture contents.

Download Full-text

Prevalence of the Tick, Ixodes pacificus, on Western Fence Lizards, Sceloporus occidentalis: Trends by Gender, Size, Season, Site, and Mite Infestation

Journal of Herpetology ◽

10.2307/1565257 ◽

2000 ◽

Vol 34 (1) ◽

pp. 160 ◽

Cited By ~ 17

Author(s):

Jos. J. Schall ◽

Holly R. Prendeville ◽

Kathryn A. Hanley

Keyword(s):

Mite Infestation ◽

Ixodes Pacificus ◽

Sceloporus Occidentalis

Download Full-text

Varroa jacobsoni infestation of adult Africanized and Italian honey bees (Apis mellifera) in mixed colonies in Brazil

Genetics and Molecular Biology ◽

10.1590/s1415-47571999000300006 ◽

1999 ◽

Vol 22 (3) ◽

pp. 321-323 ◽

Cited By ~ 12

Author(s):

Geraldo Moretto ◽

Leonidas João de Mello Jr.

Keyword(s):

Apis Mellifera ◽

Honey Bee ◽

Honey Bees ◽

Mite Infestation ◽

Varroa Jacobsoni ◽

Africanized Honey Bees ◽

African Honey Bees ◽

Africanized Bees ◽

Bee Colonies ◽

Different Levels

Different levels of infestation with the mite Varroa jacobsoni have been observed in the various Apis mellifera races. In general, bees of European races are more susceptible to the mite than African honey bees and their hybrids. In Brazil honey bee colonies are not treated against the mite, though apparently both climate and bee race influence the mite infestation. Six mixed colonies were made with Italian and Africanized honey bees. The percentage infestation by this parasite was found to be significantly lower in adult Africanized (1.69 ± 0.44) than Italian bees (2.79 ± 0.65). This ratio was similar to that found in Mexico, even though the Africanized bees tested there had not been in contact with varroa, compared to more than 20 years of the coexistence in Brazil. However, mean mite infestation in Brazil on both kinds of bees was only about a third of that found in Mexico.

Download Full-text

Mite infestation in house dust from the school environments in Kanagawa prefecture(Contributed Paper,Proceedings of the 58th Annual Meeting of Eastern Region)

Medical Entomology and Zoology ◽

10.7601/mez.58.120_1 ◽

2007 ◽

Vol 58 (2) ◽

pp. 120

Author(s):

M. Yano ◽

T. Hashimoto ◽

A. Muto ◽

A. Ishii

Keyword(s):

Annual Meeting ◽

House Dust ◽

Mite Infestation ◽

Eastern Region ◽

School Environments ◽

Kanagawa Prefecture

Download Full-text

Physiological and Biochemical Changes in Tea Leaves and Made Tea Due to Red Spider Mite Infestation

Asian Journal of Plant Sciences ◽

10.3923/ajps.2016.16.25 ◽

2015 ◽

Vol 15 (1-2) ◽

pp. 16-25 ◽

Cited By ~ 1

Author(s):

Mohammad Shameem Al ◽

Md. Mozammel Hoque ◽

Mainuddin Ahmed ◽

Md. Yasin

Keyword(s):

Spider Mite ◽

Biochemical Changes ◽

Mite Infestation ◽

Tea Leaves ◽

Red Spider Mite ◽

Physiological And Biochemical

Download Full-text

Low fertility, fecundity and numbers of mated female offspring explain the lower reproductive success of the parasitic mite Varroa destructor in African honeybees

Parasitology ◽

10.1017/s0031182018000616 ◽

2018 ◽

Vol 145 (12) ◽

pp. 1633-1639 ◽

Cited By ~ 10

Author(s):

Beatrice T. Nganso ◽

Ayuka T. Fombong ◽

Abdullahi A. Yusuf ◽

Christian W. W. Pirk ◽

Charles Stuhl ◽

...

Keyword(s):

Apis Mellifera ◽

Reproductive Success ◽

Varroa Destructor ◽

Female Offspring ◽

Low Fertility ◽

Mite Infestation ◽

Unmated Female ◽

Mite Reproduction ◽

Worker Brood ◽

Honeybee Subspecies

AbstractAlthough Varroa destructor is the most serious ecto-parasite to the honeybee, Apis mellifera L., some honeybee populations such as Apis mellifera scutellata in Kenya can survive mite infestations without treatment. Previously, we reported that grooming behaviour could be a potential tolerant mechanism expressed by this honeybee subspecies towards mite infestation. However, both hygienic and grooming behaviours could not explain the lower mite-infestation levels recorded in these colonies. Here, we investigated the involvement of other potential resistant mechanisms including suppression of mite reproduction in worker brood cells of A. m. scutellata to explain the low mite numbers in their colonies. High infertility rates (26–27%) and percentages of unmated female offspring (39–58%) as well as low fecundity (1.7–2.2, average offspring produced) were identified as key parameters that seem to interact with one another during different seasons to suppress mite reproduction in A. m. scutellata colonies. We also identified offspring mortality in both sexes and absence of male offspring as key factors accounting for the low numbers of mated daughter mites produced in A. m. scutellata colonies. These results suggest that reduced mite reproductive success could explain the slow mite population growth in A. m. scutellata colonies.

Download Full-text