Notes on Life-History of the Onion Maggot, Hylemya antiqua (Meig.) (Diptera: Anthomyiidae), in Sandy and Organic Soils

1959 ◽  
Vol 91 (10) ◽  
pp. 633-638 ◽  
Author(s):  
J. Lafrance ◽  
J. P. Perron
Keyword(s):  
Life History ◽  
Air Temperature ◽  
Organic Soils ◽  
Field Observations ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Temperature And Precipitation ◽  
History Of ◽  
The Relationship

This is a report on field observations and experiments on the life-history of the onion maggot, Hylemya antiqua (Meig.), conducted from 1955 to 1958 in sandy and organic soils of southwestern Quebec. The dates of emergence of adults, the number of generations, the percentage of pupae entering diapause in each generation, and the relationship between diapause, air temperature, and precipitation were recorded.

A Note on a Dipterous Predator of the Onion Maggot, Hylemya antiqua (Meig.)

1952 ◽  
Vol 84 (4) ◽  
pp. 112-112 ◽  
Author(s):  
J. P. Perron ◽  
J. Lafrance
Keyword(s):  
Life History ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
History Of

In investigations on the life-history of the onion maggot at St. Jean, Que., in 1951, a few specimens of a dipterous predator were found in the rearing cages in the laboratory. They were feeding voraciously on the adults, destroying a colony of nearly 300 flies within two weeks.Specimens were identified by Mr. A. R. Brooks, Systematic Entomology, Division of Entomology, Saskatoon, Sask., as Coenosia tigrina (F.). Mr. G. E. Shewell, Systematic Entomology, Division of Entomology, Ottawa, has stated that nothing is known in Canada about the life-history of this species, but that it is apparently well known as a predator in Europe and that B. M. Hobby has published a long list of species on which it preys, including many anthomyiids.

Notes on the Life-History of the Onion Maggot, Hylemya antiqua (Meig.) (Diptera: Anthomyiidae) Reared in Field Cages

1961 ◽  
Vol 93 (2) ◽  
pp. 101-106 ◽  
Author(s):  
J. P. Perron ◽  
J. Lafrance
Keyword(s):  
Life History ◽  
First Generation ◽  
Late Summer ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Three Generations ◽  
Two Generations ◽  
Important Pest ◽  
History Of

The onion maggot, Hylemya antiqua (Meig), has three distinct generations a year in Canada (Armstrong 1924, Hammond 1924, Baker 1928, Lafrance and Perron 1959), and usually two generations in England (Miles 1955). In Canada the three generations overlap considerably and adults of each generation are observed in flight in late summer (Perron et al. 1953). It is the most important pest of onions (Matthewman et al. 1950, Hudon and Perron 1956), and the first generation is the most injurious to the onion plants (Kendall 1932, Miles 1953).

Composite Emergence Cage for Studies on the Life-History of the Onion Maggot, Hylemya antiqua (Mg.) (Diptera: Anthomyiidae)

1955 ◽  
Vol 87 (8) ◽  
pp. 358-362 ◽  
Author(s):  
J. Lafrance ◽  
J. P. Perron
Keyword(s):  
Life History ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
History Of

In investigations on the life-history of the onion maggot, Hylemya antiqua (Mg.), at St. Jean, several types of emergence cages were devised and tested. The composite emergence cage described below was found very satisfactory for the collecting of adults.

scholarly journals Calculation of LTC Premiums Based on Direct Estimates of Transition Probabilities

2005 ◽  
Vol 35 (2) ◽  
pp. 455-469 ◽  
Author(s):  
Florian Helms ◽  
Claudia Czado ◽  
Susanne Gschlößl
Keyword(s):  
Life History ◽  
Generalized Estimating Equations ◽  
Transition Matrix ◽  
Transition Probabilities ◽  
State Model ◽  
Link Function ◽  
History Of ◽  
The Relationship ◽  
Pseudo Values ◽  
Almost Unbiased

In this paper we model the life-history of LTC-patients using a Markovian multi-state model in order to calculate premiums for a given LTC-plan. Instead of estimating the transition intensities in this model we use the approach suggested by Andersen et al. (2003) for a direct estimation of the transition probabilities. Based on the Aalen-Johansen estimator, an almost unbiased estimator for the transition matrix of a Markovian multi-state model, we calculate so-called pseudo-values, known from Jackknife methods. Further, we assume that the relationship between these pseudo-values and the covariates of our data are given by a GLM with the logit as link-function. Since the GLMs do not allow for correlation between successive observations we use instead the “Generalized Estimating Equations” (GEEs) to estimate the parameters of our regression model. The approach is illustrated using a representative sample from a German LTC portfolio.

scholarly journals Married Dostoevsky? The History of Relations between V.V. Rozanov and A.P. Suslova

2021 ◽  
Vol 26 (3) ◽  
pp. 398-413
Author(s):  
Alexey Nicolaeyvich Varlamov
Keyword(s):  
Life History ◽  
Documentary Evidence ◽  
Scientific Level ◽  
Literary Research ◽  
The Brothers Karamazov ◽  
History Of ◽  
Brothers Karamazov ◽  
The Relationship ◽  
Objective Study ◽  
Deep Interest

The article examines in detail the history of the relationship between A.P. Suslova and V.V. Rozanov in connection with the notion existing in the historical and literary science that Rozanovs marriage to Suslova was based on his deep interest in the work of F.M. Dostoevsky and his desire in such an unusual way to penetrate deeper into the secrets of the life and work of the author of The Idiot and The Brothers Karamazov. However, an appeal to various documentary evidence shows that Rozanovs marriage motives came from the warehouse of his nature and constituted a complex of rather complex reasons, among which the human, and not literary, research principle still dominates. The desire for a benevolently objective study of the life history of A.P. Suslova makes it possible to clarify at the modern scientific level the important facts of the biography of F.M. Dostoevsky and V.V. Rozanov, to free them from the stratifications of legends and myths.

scholarly journals Syair Perahu Karya Hamzah Fansuri Dalam Kaitannya Dengan Budaya Maritim di Singkel

PANALUNGTIK ◽  
2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Laila Abdul Jalil ◽  
Nuralam
Keyword(s):  
Life History ◽  
Data Collection ◽  
Historical Archaeology ◽  
Research Use ◽  
Literature Study ◽  
Literary Works ◽  
The Past ◽  
Maritime Culture ◽  
History Of ◽  
The Relationship

Hamzah Fansuri lived in the early era of the peak of the Aceh Darussalam kingdom. The Kingdom of Aceh Darussalam at that time visited by many traders from Arab, Parsi, Turkish, Bengal (India), Siamese, Portuguese, and Spain. Hamzah Fansuri is a Sufism scholar who developed Islamic teaching trough his poems. One of his poems is Syair Perahu. Syair Perahu besides containing Sufism also is related to the trade and wealth of Singkel sea. The discovery of foreign ceramics along the Singkel river is one proof of trade in the past. This research use method of manuscript study. The reason for choosing text studies is because Hamzah Fansuri produced many literary works in the form of poetry. The approach used in this study is historical archaeology to reveal the maritime culture of Singkel trough Syair Perahu by Hamzah Fansuri. Data collection is done trough literature study by collecting books, documents, and paper relating to the life history of Hamzah Fansuri and and literary works that he produces. The purpose of this reseach is to determine the relationship between Syair Perahu and maritime culture of Singkel. Based on a study of Syair Perahu, it is known that Hamzah Fansuri not only discusses the Sufism but also provides information about Singkel and trade in its time.

Notes on Anatomy, Life-history, and Behaviour of Aphaereta pallipes (Say) (Hymenoptera: Braconidae), a Parasite of the Onion Maggot, Hylemya antiqua (Meig.)

1959 ◽  
Vol 91 (2) ◽  
pp. 93-97 ◽  
Author(s):  
E. H. Salkeld
Keyword(s):  
Life History ◽  
First Generation ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Muck Soil ◽  
Cabbage Maggot

During studies at Ottawa on the physioloLgy of the onion maggot, Hylemya antigua (Meig.), 29 per cent of 2,320 puparia that had been collected in muck soil at Ste. Clothilde, Que., in the autumn of 1957 were parasitized by the braconid Aphaereta pallipes (Say)2. There are few reports of this insect's parasitizing Diptera in Canada and none on its life-history orbehaviour. Hammond (1932) found it in first-generation puparia of the onion maggot at Ottawa. Wishart (1957) reared it from puparia of the cabbage maggot, Hylewyn brassicae (Bouché), collected from St. Martin and St. Rose, Que. Notes on the biologies of two other species of Aphaereta have been published by Graham-Smith (1919) and Evans (1933), the former on Aphaereta cephalotes (Hal.) and the latter on Aphaereta minuta Nees. Both species are parasites of carrion-infesting Diptera.

CONTROL OF THE ONION MAGGOT, HYLEMYA ANTIQUA (MEIG.) (DIPTERA: ANTHOMYIIDAE), WITH INSECTICIDES IN ORGANIC SOILS OF SOUTHWESTERN QUEBEC

1960 ◽  
Vol 40 (1) ◽  
pp. 156-159 ◽  
Author(s):  
J. P. Perron ◽  
J. Lafrance
Keyword(s):  
Plant Growth ◽  
Surface Treatment ◽  
Seed Treatment ◽  
Soil Surface ◽  
Surface Treatments ◽  
Organic Soils ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Onion Seed ◽  
Stimulate Plant Growth

In organic soils of southwestern Quebec from 1955 to 1958, dieldrin heptachlor and endrin wettable powders mixed at the rate of 1 ounce of toxicant per pound of onion seed applied for the control of the onion maggot, Hylemya antiqua (Meig.) were highly effective. The heptachlor treatment appeared to stimulate plant growth. Toxaphene as seed treatment was poor, while di-syston also as seed treatment was effective but reduced germination by one-third. A soil surface treatment with chlordane dust at 4.5 pounds of toxicant per acre gave also a fair control where seed had not been treated. Combinations of dieldrin or DDT seed treatments with chlordane or aldrin soil surface treatments when plants averaged 2 inches high were not more effective than a seed treatment alone.

Root life history of non-dehiscent sesame (Sesamum indicum L.) cultivars and the relationship with canopy development

2019 ◽  
Vol 241 ◽  
pp. 107560 ◽  
Author(s):  
Romain M. Gloaguen ◽  
Annie Couch ◽  
Diane L. Rowland ◽  
Jerry Bennett ◽  
George Hochmuth ◽  
...  
Keyword(s):  
Life History ◽  
Sesamum Indicum ◽  
Canopy Development ◽  
History Of ◽  
The Relationship

Bone microstructure: quantifying bone vascular orientation

2007 ◽  
Vol 85 (1) ◽  
pp. 63-70 ◽  
Author(s):  
M. de Boef ◽  
H.C.E. Larsson
Keyword(s):  
Life History ◽  
Bone Microstructure ◽  
Quantitative Approach ◽  
Three Dimensions ◽  
History Of ◽  
Primary Bone ◽  
Novel Methods ◽  
Radial Index ◽  
The Relationship ◽  
Nonlinear Pattern

Bone microstructure often preserves a temporal record of the life history of the animal to which it belongs. Previously used bone microstructure metrics to differentiate between primary bone types are reviewed and tested with a broad sample of bone types. Two new metrics, the radial index and the longitudinal index, are developed to quantitatively differentiate bone types based on bone vascular orientation in three dimensions. All previously used metrics described the bone microstructure in a nonlinear pattern and were unable to separate bone types satisfactorily. The radial index and longitudinal index effectively differentiated bone types and described bone microstructure within a linear continuum. The continuous nature of the range of vascular orientation in bone microstructure necessitates a quantitative approach rather than the commonly used qualitative classifications. The radial index and longitudinal index, which objectively detect small differences in vascular orientation in three dimensions, are therefore preferable to other metrics for inter- and intra-specific comparisons of bone microstructure. These metrics offer novel methods to facilitate examinations of the relationship between primary bone type and ontogeny, biomechanics, and phylogeny.

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