Laboratory Studies on Some Factors in the Life-history of the Predacious Mite Typhlodromus tiliae Oudms. (Acarina: Phytoseiidae)

1956 ◽  
Vol 88 (12) ◽  
pp. 701-704 ◽  
Author(s):  
H. J. Herbert
Keyword(s):  
Life History ◽  
Nova Scotia ◽  
Laboratory Studies ◽  
Predacious Mites ◽  
Predacious Mite ◽  
European Red Mite ◽  
History Of

Among the important predators of the European red mite, Metatetranychus ulmi (Koch), in Nova Scotia is a group of predacious mites belonging to the subfamily Phytoseiinae. There is little information in the literature on the biology of the species in this subfamily. Smith and Summers (1949) reported on the bionomics of “Hypoaspis” macropilis (Banks), and Herbert (1952) and Ballard (1953) on the life-history of Typhlodromus fallacis (Garm.).

BIOLOGY OF TACHINAEPHAGUS ZEALANDICUS (HYMENOPTERA: ENCYRTIDAE), PARASITOID OF SYNANTHROPIC DIPTERA

1974 ◽  
Vol 106 (8) ◽  
pp. 785-800 ◽  
Author(s):  
G. S. Olton ◽  
E. F. Legner
Keyword(s):  
Life History ◽  
Developmental Stages ◽  
Average Length ◽  
Host Density ◽  
Adult Emergence ◽  
Reproductive Period ◽  
Laboratory Studies ◽  
Pupal Parasitoid ◽  
History Of ◽  
Parasitoid Development

AbstractThe synonymy, distribution, host range, and life history of the gregarious larval–pupal parasitoid Tachinaephagus zealandicus Ashmead, is discussed. Laboratory studies of its biology were conducted at 25° ± 2 °C using Musca domestica L. as host. Its developmental stages are described. Under laboratory conditions its life cycle lasted 23–27 days. Parasitoid development accelerated with higher average densities per host. Single standardized hosts produced 3–18 adult parasitoids. Mated females provided with hosts lived 50.4–67.2 h. The average length of the reproductive period and number of hosts parasitized were independent of host density; however, the average number of eggs deposited per host increased at lower host densities. Adult emergence displayed circadian rhythmicity independent of photoperiod over 3+ days.

SOME PREDATORS OF THE EUROPEAN RED MITE, PARATETRANYCHUS PILOSUS C. & F., IN NOVA SCOTIA

1935 ◽  
Vol 13d (2) ◽  
pp. 19-39 ◽  
Author(s):  
F. C. Gilliatt
Keyword(s):  
Life History ◽  
Nova Scotia ◽  
Natural Enemies ◽  
European Red Mite ◽  
Unidentified Species ◽  
Campylomma Verbasci

Predators are the most important natural enemies of the European red mite. Notes are given on the life history and habits of the following predaceous enemies of this mite, Seiulus pomi Parrott; Diaphnidia pellucida Uhl.; Diaphnidia capitata Van D.; Hyaliodes vitripennis Say; Stethorus punctum Leconte; Plagiognathus obscurus Uhl.; Camptobrochis nebulosus Uhl.; Anystis agilis Banks; Campylomma verbasci Mey., and an unidentified species of Syrphidae.

Notes on Parathion-Resistant Strains of Two Phytophagous Mites and a Predacious Mite in British Columbia

1958 ◽  
Vol 90 (2) ◽  
pp. 92-97 ◽  
Author(s):  
C. V. G. Morgan ◽  
N. H. Anderson
Keyword(s):  
British Columbia ◽  
Pacific Northwest ◽  
Predacious Mites ◽  
Predacious Mite ◽  
Phytophagous Mites ◽  
European Red Mite ◽  
The Pacific ◽  
Resistant Strains ◽  
Tetranychus Pacificus

The existence of strains of mites resistant to parathion has been well established (Garman, 1950; Lienk, Dean, & Chapman, 1952; Newcomer & Dean, 1952; Smith & Fulton, 1951). Resistant strains of the European red mite, Metatetranychus ulmi (Koch), first occurred in orchards of the Pacific northwest in 1950 (Newcomer, 1951; O'Neill & Hantsbarger, 1951), approximately three years after parathion was first used as an acaricide. Two other species of orchard mites, the Pacific mite, Tetranychus pacificus McG., and T. mcdanieli McG., were subsequently reported to have developed parathion-resistant strains in the same area (Newcomer & Dean, 1953). Though parathion is lethal to most predacious mites and insects, Huffaker and Kennett (1953) found a difference in tolerance between species of Typhlodromus in the field and in the laboratory: T. reticulatus Oudms. was very susceptible to parathion whereas T. occidentalis Nesbitt was not appreciably affected by it.

Observations on Phaeosaccion collinsii in culture

1971 ◽  
Vol 49 (4) ◽  
pp. 563-566 ◽  
Author(s):  
J. McLachlan ◽  
L. C.-M. Chen ◽  
T. Edelstein ◽  
J. S. Craigie
Keyword(s):  
Life History ◽  
Nova Scotia ◽  
Water Temperature ◽  
Spore Germination ◽  
Light Intensities ◽  
History Of ◽  
Single Locality

The life history of Phaeosaccion collinsii Farlow, a species which is known from a single locality in Nova Scotia, has been completed in culture. There was no indication of a sexual phase and zoospores gave rise directly to the tubular thallus. Completion of the life history occurred at 5 °C only. At higher temperatures spores failed to germinate, or growth and differentiation were suppressed. Light intensities exceeding 100 ft-c inhibited spore germination, although growth and differentiation were not similarly affected. In nature mature plants occur sublittorally, and are present only in spring when the water temperature is around 5 °C. Zoospore flagellation is of the typical heterokont type with the flimmer bearing bilateral hairs. On this basis P. collinsii can be placed either in the Chrysophyceae or Phaeophyceae.

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.

Description of the pupa and observations on the distribution, ecology, and life history of Quedius spelaeus spelaeus Horn (Coleoptera: Staphylinidae) in Nova Scotia, Canada

Zootaxa ◽  
2006 ◽  
Vol 1226 (1) ◽  
pp. 61 ◽  
Author(s):  
MAX MOSELEY ◽  
JAN KLIMASZEWSKI ◽  
CHRISTOPHER G. MAJKA
Keyword(s):  
Life History ◽  
Nova Scotia ◽  
Glacial Refugia ◽  
Disjunct Distribution ◽  
Late Instar ◽  
History Of ◽  
First Time

The troglophilic staphylinid beetle Quedius spelaeus spelaeus Horn 1871, has been found in a number of porcupine dung caves in Nova Scotia where it appears to be the dominant predator on other invertebrates. In culture, late-instar larvae were observed to excavate and remain in cavities excavated in dung, and to pupate in these cavities. The pupa is described for the first time and compared with other pupae in the genus Quedius Stephens. The apparently disjunct distribution of the species in Nova Scotia is discussed and it is suggested that it may have colonized the province from Atlantic glacial refugia.

scholarly journals THE LIFE-HISTORY OF THE SPINED RUSTIC, BARATHRA CURIALIS, SMITH

1906 ◽  
Vol 38 (12) ◽  
pp. 381-384
Author(s):  
James Fletcher ◽  
Arthur Gibson
Keyword(s):  
Life History ◽  
Nova Scotia ◽  
Lake Superior ◽  
The Body ◽  
Wide Area ◽  
History Of

In the Report of the Entomologist and Botanist to the Dominion Experimental Farms for 1905, at pages 179 and 180, considerable space is given to a discussion of an outbreak of a large noctuid caterpillar, which appeared in considerable numbers in Canada during 1905. Complaints of injury by this insect were received from a wide area, extending from Nova Scotia as far west as Lake Superior. During July many kinds of plants in gardens were attacked by smooth cutworm-like caterpillas, which when small were greenish in colour, having the body divided into two equal areas above and below the spiracles by a wide black stigmatal band.

Overwintering Females and the Number of Generations of Typhlodromus (T.) pyri Scheuten (Acarina: Phytoseiidae) in Nova Scotia

1962 ◽  
Vol 94 (3) ◽  
pp. 233-242 ◽  
Author(s):  
H. J. Herbert
Keyword(s):  
Life History ◽  
Nova Scotia ◽  
Laboratory Study ◽  
Life Histories ◽  
Prey Species ◽  
Typhlodromus Pyri ◽  
Predacious Mite ◽  
Predominant Species ◽  
Laboratory Conditions ◽  
Wide Range

Typhlodromus pyri Scheuten (= T. tiliae Oudms.) is the predominant species of predacious mite on apples in Nova Scotia. It feeds on a wide range of prey species (Herbert, 1959). Chant (1960) investigated the life-history and habits of this species in southeastern England and Herbert (1956) studied its life-history under controlled laboratory conditions. A knowledge of the life-histories of various components of the fauna is basic to an evaluation of predation; therefore, a study of the life-history and habits of T. pyri in the field was undertaken. This was supplemented by a laboratory study in which an attempt was made to duplicate field temperarures. The results of these studies are presented here.

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.

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