Notes on the Biology of some predacious Mites on Fruit Trees in south-eastern England

1956 ◽  
Vol 47 (2) ◽  
pp. 205-214 ◽  
Author(s):  
Elsie Collyer
Keyword(s):  
Life History ◽  
Plant Tissue ◽  
Fruit Trees ◽  
Predacious Mites ◽  
Apple Trees ◽  
South Eastern ◽  
Three Generations ◽  
Phytophagous Mites ◽  
History Of ◽  
Considerable Length

A number of predacious mites of the PHYTOSEIINAE (family LAELAPTIDAE), found in south-eastern England, mostly in association with fruit trees, are listed. Certain measurements and other characters that are of value in separating species are given. The species found were: Typhlodromus tiliae Oudm., T. cucumeris Oudm., T. tiliarum Oudm., T. rhenanus (Oudm.), T. finlandicus (Oudm.), T. umbraticus Chant, T. massei Nesbitt, T. vitis Oudm., T. soleiger (Ribaga), Phytoseius macropilis (Banks) and two Amblyseius spp. Of these, T. tiliae, T. finlandicus and P. macropilis are normally abundant on apple trees, but only T. tiliae remains abundant on commercially-grown apple trees. For each species a list of plants on which it has been found is given.Details of the life-history of laboratory-reared mites are given and these, together with counts of field populations, show that three generations a year is normal.Predacious phytoseiine mites feed on several species of TETRANYCHIDAE, including Metatetranychus ulmi (Koch) and Tetranychus telarius (L.); when M. ulmi is supplied in adequate numbers, adults of T. tiliae consume 3 mites per day, the nymphs 2 mites per day, on an average. It is thought that they also feed on plant tissue, since individuals survived in the laboratory for a considerable length of time in the absence of phytophagous mites, though eggs were not laid.

Life-History of the European Red Mite

1957 ◽  
Vol 89 (7) ◽  
pp. 328-333 ◽  
Author(s):  
Benoit Parent ◽  
A. A. Beaulieu
Keyword(s):  
Life History ◽  
Far East ◽  
Fruit Trees ◽  
Quebec City ◽  
Apple Orchards ◽  
Apple Trees ◽  
European Red Mite ◽  
City District ◽  
History Of ◽  
Serious Injury

Since 1945, the European red mite, Metatetranychus ulmi (Koch) [=Paratetranychus pilosus (C. & F.)], has been one of the major pests in apple orchards in southwestern Quebec. Though it had been noted by Petch on fruit trees at Ville LaSalle, Que., in 1930 and at Lac Mégantic, Que., in 1931 it was not reported as causing serious injury to apple trees before July of 1945, when Beaulieu (1948) reported that it was responsible for the first important damage in a few orchards at Rougemont, Que. By 1946, infestations were general in the apple growing areas of southwestern Quebec and occurred as far east as the Quebec City district.

Sciaphobus squalidus, Gyll. (Col., Curcul.), a Pest of Orchards in Ukraine

1928 ◽  
Vol 18 (3) ◽  
pp. 313-317 ◽  
Author(s):  
N. S. Dekhtiarev
Keyword(s):  
Life History ◽  
Fruit Trees ◽  
History Of ◽  
Methods Of Control

Various species of Curculionidae are injurious to orchards in Ukraine, but Sciaphobus squalidus, Gyll. (fig. 1) is considered by fruit-growers to be the most harmful, as it attacks the buds of all fruit trees. Mr. Znamenskii was the first to make an adequate study of the life-history of this insect. The following notes give an account of my own observations and deal principally with methods of control.

DISTRIBUTION OF PHYTOPHAGOUS AND PREDACIOUS MITES ON APPLE TREES IN NOVA SCOTIA

1973 ◽  
Vol 105 (2) ◽  
pp. 271-276 ◽  
Author(s):  
H. J. Herbert ◽  
K. P. Butler
Keyword(s):  
Nova Scotia ◽  
Panonychus Ulmi ◽  
Predacious Mites ◽  
Apple Trees ◽  
Predacious Mite ◽  
Phytophagous Mites ◽  
Lower Position ◽  
Zetzellia Mali ◽  
Aculus Schlechtendali ◽  
Mature Apple

AbstractThe relative densities of phytophagous and predacious mites within mature apple trees were examined. The eggs of phytophagous mites Aculus schlechtendali (Nal.) and Panonychus ulmi (Koch) were more numerous in the lower position of the tree while the reverse was true for the predacious mite Zetzellia mali (Ewing) and its eggs.

scholarly journals Remembrance of Bognár Sándor (1921-2011)

2011 ◽  
pp. 16-20
Author(s):  
András Bozsik
Keyword(s):  
Higher Education ◽  
Plant Protection ◽  
Crop Protection ◽  
Fruit Trees ◽  
Advanced Age ◽  
Educational Work ◽  
Phytophagous Mites ◽  
Agricultural Entomology ◽  
History Of ◽  
Long Life

Dr. Sándor Bognár was a distinguished cultivator of the horticultural entomology and a determining personality of the higher education of Hungarian crop protection. Training of the scientific and extension specialists of Hungarian agricultural entomology would have been unimaginable without him. He was researcher of the Plant Protection Institute, innovator of the crop protection training’s essential and organisational standard at the Horticultural College and Faculty, who sacrificed his life’s work for developing the crop protection and for the tracking of the history of Hungarian crop protection. He dealt with the Pimplinae (Ichneuminidae) at the very beginning of his carrier and later with the difficulties of soil dwelling pests (Elateridae) but he dedicated a lot of time to the pests of rice and the pest-assemblages of fruit trees and grape. It is important to mention his activity on the phytophagous mites, thus one can call him as one of the founders of the Hungarian agricultural acarology. One top of his educational work was the wonderful manual „Agricultural Entomology” written with László Huzián in 1974 and 1979. László Szalay-Marzsó said of this book that it was impossible to write a better one. He has been right. In spite of his advanced age he participated systematically in the conferences in Hungary and shared the knowledge gained during his long life, and the morals and patriotism got from his models and developed considerably.

Population dynamics and life history of Paratya australiensis Kemp, 1917 (Decapoda: Atyidae) in upland rainforest streams, south-eastern Queensland, Australia

1997 ◽  
Vol 48 (4) ◽  
pp. 361 ◽  
Author(s):  
Marty A. Hancock ◽  
Stuart E. Bunn
Keyword(s):  
Population Dynamics ◽  
Life History ◽  
Spatial And Temporal Variation ◽  
Tropical Species ◽  
Breeding Period ◽  
Wet Season ◽  
Lower Altitude ◽  
South Eastern ◽  
History Of ◽  
Paratya Australiensis

Aspects of the life history and population dynamics of Paratya australiensis were examined in headwater streams of the Conondale Range, south-eastern Queensland, particularly in relation to spatial and temporal variation in temperature and flow dynamics. Breeding period and population structure at nine sites in three subcatchments were examined during three years of monthly sampling using a non-destructive, photographic method. Breeding was restricted to the warmer months of late spring and summer. Peak abundances of ovigerous females and release of larvae occurred earlier at warmer, lower-altitude sites than at cooler, upper-altitude sites. This is consistent with the general trend for seasonal breeding in temperate and subtropical species of atyids, and perennial breeding in tropical species, and suggests that the summer breeding period of P. australiensis was strongly influenced by temperature. In subtropical, south-eastern Queensland, larvae were released just before and during the wet season. Although populations were quite resilient, disturbance from high-flow events also shaped the life history. Hydrology modified the breeding period by influencing overall abundance and recruitment success and by favouring the early release of larvae before peak flows. The reasonably well defined seasonal cycle and synchronized development appear to result from the combined effects of temperature and hydrology.

LIFE STAGES AND DEVELOPMENT OF MONARTHRUM FASCIATUM (COLEOPTERA: SCOLYTIDAE) IN DYING AND DEAD OAK TREES

1974 ◽  
Vol 106 (12) ◽  
pp. 1301-1308 ◽  
Author(s):  
M. P. Roling ◽  
W. H. Kearby
Keyword(s):  
Life History ◽  
Life Stages ◽  
Oak Wilt ◽  
Male Ratio ◽  
Three Generations ◽  
Oak Trees ◽  
History Of

AbstractThe life history of Monarthrum fasciatum was studied from 1971 through 1973 on oak in Missouri. Three generations of the beetle were observed each year and the measurements of the life stages and the gallery components were recorded. The female to male ratio was approximately 2:1. No relationship was found between oak-wilt-killed trees and M. fasciatum.

Further Observations on the Life-history of Limnaea truncatula

Parasitology ◽  
1926 ◽  
Vol 18 (2) ◽  
pp. 144-147 ◽  
Author(s):  
C. L. Walton ◽  
W. Norman Jones
Keyword(s):  
Life History ◽  
Growth Rates ◽  
Egg Masses ◽  
Three Generations ◽  
Spring Generation ◽  
History Of

1. Egg masses of Limnaea truncatula collected in March 1925 were isolated and hatched in the Laboratory. The average number of ova per mass (for 20) proved to be 9·75.2. The hatching period lasted 12 to 26 days, with an average of 20–21 days (for the Spring generation).3. On hatching, young snails were isolated, reared, and again oviposited during the first week of July. Ova from these snails again hatched during the first week of August.4. It is thus shown that L. truncatula is self fertile; that oviposition can commence at a shell altitude of 4 to 4·5 mm.5. Further data on growth-rates were obtained, showing that two (and probably three) generations occur between March and October.

Life-History of the Eastern Pygmy-Possum, Cercartetus-Nanus (Burramyidae, Marsupialia), in South-Eastern Australia

1990 ◽  
Vol 38 (3) ◽  
pp. 287 ◽  
Author(s):  
SJ Ward
Keyword(s):  
Life History ◽  
National Park ◽  
Maximum Longevity ◽  
South Eastern ◽  
North East ◽  
Eucalypt Forest ◽  
Eastern Australia ◽  
History Of ◽  
Cercartetus Nanus ◽  
Modal Size

Populations of Cercartetus nanus were investigated in three areas of Victoria: two areas of Banksia woodland at Wilsons Promontory National Park and an area of mixed eucalypt forest with an under- storey of B. spinulosa at Nar Nar Goon North, east of Melbourne. Most births occurred between November and March, but in areas where the dominant Banksia sp. flowered in winter they took place year-round. Most females produced two litters in a year, but some produced three. Males were reproductively active throughout the year. Litter sizes ranged from two to six, with a modal size of four. Pouch life lasted 30 days and weaning occurred at 65 days. Growth was rapid, young became independent immediately after weaning, and matured as early as 4.5-5.0 months old. Maximum longevity in the field was at least 4 years.

THE LIFE HISTORY OF TOUMEYELLA PINI (KING) (HOMOPTERA: COCCIDAE) IN LOBLOLLY PINE SEED ORCHARDS IN GEORGIA

1989 ◽  
Vol 121 (10) ◽  
pp. 853-860 ◽  
Author(s):  
Stephen R. Clarke ◽  
Gary L. DeBarr ◽  
C. Wayne Berisford
Keyword(s):  
Life History ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Predation Rate ◽  
Seed Orchards ◽  
South Georgia ◽  
Three Generations ◽  
Average Fecundity ◽  
History Of ◽  
Males And Females

AbstractThe striped pine scale, Toumeyella pini (King), had three generations per year in south Georgia. Females developed on snoots and males developed on needles of loblolly pine, Pinus taeda L. Generations overlapped and crawlers were most abundant in May, mid-July to early August, and late October to early November. The average fecundity was 1865 crawlers per female. Parasitism averaged ca. 15%, but the predation rate reached 50%. Coccophagus lycimnia Walker (Hymenoptera: Aphelinidae) was the most common parasitoid reared from both males and females. A pyralid larva, Laetitia coccidivora (Comstock), was a frequent predator of females.

Sign in / Sign up

Export Citation Format

Share Document