Life History of Thrips Tabaci L. on Emilia Sagittata and Its Host Plant Range in Hawaii1

1932 ◽  
Vol 25 (4) ◽  
pp. 884-891 ◽  
Author(s):  
K. Sakimura
Keyword(s):  
Life History ◽  
Host Plant ◽  
Thrips Tabaci ◽  
Host Plant Range ◽  
History Of

scholarly journals Bacterial disease of Pisum Sativum

1917 ◽  
Vol 8 (4) ◽  
pp. 461-479 ◽  
Author(s):  
Dorothy M. Cayley
Keyword(s):  
Life History ◽  
Pisum Sativum ◽  
Host Plant ◽  
Bacterial Disease ◽  
Preliminary Note ◽  
History Of

A Short preliminary note on this disease was published Nov. 1912(4), and since that date further investigations have been carried out into the life-history of the organism, and its effect on the host plant. As 1 there showed the disease is caused by a bacterium for which I propose the name Pseudomonas seminum.

scholarly journals Life History of Paracoccus marginatus (Hemiptera: Pseudococcidae) on Four Host Plant Species Under Laboratory Conditions

2008 ◽  
Vol 37 (3) ◽  
pp. 630-635 ◽  
Author(s):  
Kaushalya G. Amarasekare ◽  
Catharine M. Mannion ◽  
Lance S. Osborne ◽  
Nancy D. Epsky
Keyword(s):  
Life History ◽  
Host Plant ◽  
Plant Species ◽  
Host Plant Species ◽  
Laboratory Conditions ◽  
History Of

scholarly journals III. On the life history of the dock æcidium ( Æcidiumrumicis , schlecth)

1883 ◽  
Vol 36 (228-231) ◽  
pp. 47-50
Keyword(s):  
Life History ◽  
Host Plant ◽  
Puccinia Graminis ◽  
History Of ◽  
The Subject

This Æcidium, which is common in this country upon Rumex hydrolapathum , Huds, obtusifolius , Linn., crispus , Linn., and conglomeratus , Murray, was regarded by Fuckel and Cooke as being a condition of Uromyces rumicis (Schum .), is now stated by Winter in his last work to be a condition of Puccinia magnusiana . During the present year I have conducted a series of cultures, in which the life history of this fungus has been carefully, if not laboriously, worked out, from which it appears that Æcidium rumicis bears the same relationship to Puccinia phragmitis (Schum.) (= P. arundinacea , D. C.) as Æcidium berberidis , Gmel., bears to Puccinia graminis , Perss. History of the Subject .—Winter, in 1875, showed that those botanists who had associated this Æcidium with the Uromyces rumicis , simply because these two fungi occurred upon the same host plant, were wrong, and that the fungus in question was the æcidiospore of Puccinia phragmitis . Stahl, in 1876, repeated Winter’s experiment, and confirmed it. Now it happens that there are two Pucciniœ common upon Phragmitis communis , the (Schum.), and P. magnusiana , Körn. In March, 1877, Schröter placed the spores of both these Pucciniœ upon Rumex hydrolapathum (the species Winter originally experimented with), and found that the Æcidium was only produced from P. magnusiana . Winter, in the “Kryptogamen Flora,” now in course of publication, accepts Schröter’s statement, and gives as the æcidiospores of Puccinia magnusiana , not only the Æcidium on Rumex hydrolapathum , but also on R. cripus, conglomeratus , obtusifolius , and acetosa , and adds a note to the effect that the Æcidium upon Rheum officinale has probably the same life history.

On the life-history and fecundity of the cochineal insect, Dactylopius austrinus De Lotto (Homoptera: Dactylopiidae), a biological control agent for the cactus Opuntia awantiaca

1979 ◽  
Vol 69 (4) ◽  
pp. 629-636 ◽  
Author(s):  
V. C. Moran ◽  
B. S. Cabby
Keyword(s):  
Biological Control ◽  
Life History ◽  
Host Plant ◽  
Biological Control Agent ◽  
Control Agent ◽  
Plant Condition ◽  
History Of

AbstractThe life-history of Dactylopius austrinus De Lotto on the weed Opuntia aurantiaca, is described. The male moults four times and the female twice. The instars are illustrated. Fecundity is shown to be a function of female density on the plant and of host-plant condition. The sexes were produced in a ratio of about two males to one female.

scholarly journals The immature stages of Elachista zonulae (Sruoga, 1992) (Lepidoptera: Elachistidae)

2009 ◽  
Vol 20 (4) ◽  
pp. 239-244 ◽  
Author(s):  
Tomasz Baran
Keyword(s):  
Life History ◽  
Host Plant ◽  
Leaf Blade ◽  
Food Plant ◽  
Young Larva ◽  
Immature Stages ◽  
New Host ◽  
Mature Larva ◽  
History Of ◽  
First Time

The morphology of larva and pupa, as well as larval mines of Elachista zonulae (Sruoga, 1992) are described and illustrated for the first time. Carex firma Host is reported as a new host plant ofthe species; previously only Carex sempervirens Vill. was known to be host plant of E. zonulae. Some information on life history of this elachistid moth is also provided. The mature larva is 4.5—5.5 mm long. Pupation takes place usually at base of leaf blade of the food plant. The species is univoltine and hibernates as young larva.

scholarly journals Ecology and life history of Paratomapoderus brachypterus in Gabon (Coleoptera: Attelabidae)

2017 ◽  
pp. 159-163
Author(s):  
Silvano Biondi ◽  
Carlo Massarone ◽  
Cosmin-Ovidiu Manci
Keyword(s):  
Life History ◽  
West Africa ◽  
Host Plant ◽  
Leaf Roll ◽  
Reproductive Behaviour ◽  
Plant Leaf ◽  
Trophic Activity ◽  
New Information ◽  
History Of ◽  
First Time

On the base of data collected during four expeditions in Gabon (West Africa) from 2012 to 2016, the authors provide new information on trophic activity and reproductive behaviour of Paratomapoderus brachypterus (Voss, 1926) (Attelabidae: Apoderinae, Hoplapoderini), with emphasis on leaf-roll realisation; host plant, leaf roll, larva and pupa are illustrated for the first time.

scholarly journals The life-cycle of the nodule organism, bacillus radicicola ( Beij. ), in soil and its relation to the infection of the host plant

1926 ◽  
Vol 99 (699) ◽  
pp. 427-451 ◽  
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Host Plant ◽  
Internal Structure ◽  
Mother Cell ◽  
Leguminous Plant ◽  
Young Culture ◽  
History Of ◽  
The Subject ◽  
Straight Rod

The existence of changes in the form of Bacillus radicicola has been known since Beijerinck (2) first isolated it in 1888 from leguminous plant nodules. He observed the motile “swarmer” stage as well as the branching forms, whose nature was already the subject of controversy. About the same time the development of straight-rod forms of the organism was described by Prazmowski (14). Numerous writers have since observed the existence of the organism in the three conditions of straight rods, branching rods and cocci (for references, see Löhnis, 1921 (10)). In 1916 Löhnis and Smith (11) claimed that the various forms constituted a definite life-cycle through which the organism normally passes, and this cycle, as seen in cultures, was carefully described in 1919 by Bewley and Hutchinson (3). In a vigorous young culture, the predominating form of the organism is a short, evenly staining rod (fig. 1). These rods soon undergo a change in internal structure, the staining material becoming segregated into bands crossing the cell. During this banded stage the cells frequently become swollen, distorted, and branched, the so-called “bacteroids” (Brunchorst (4)), but this irregularity of form is not an essential part of the life-cycle, but would appear to be a response to conditions of the environment (Buchanan, 1909) (5). The banded cells give rise to the cocci by further condensation of the bands. The origin of the cocci within the mother-cell was described and illustrated in 1891 by Morck (12), who was the first to appreciate the relation of the internal structure of the cell to the life-history of the organism. The cocci are usually released in a non-motile condition, and afterwards develop flagella, becoming actively motile, the “swarmers” of Beijerinck (2). Under certain conditions, however, the cocci develop flagella while still enclosed within the mother-cell. This condition has been described by Greig-Smith (8) and the observation confirmed by one of the present authors (7). The cocci eventually become elongated and thus pass into the unbanded rod stage. The flagella, which are developed on the cocci, persist after this elongation, but are soon lost: the rods then become non-motile. The development of motility in a culture is thus intimately associated with the appearance of the coccus stage.

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