Allozyme genotype-environment relationships in natural populations of Drosophila buzzatii

1979 ◽  
Vol 17 (1-2) ◽  
pp. 105-126 ◽  
Author(s):  
J. C. Mulley ◽  
J. W. James ◽  
J. S. F. Barker
Keyword(s):  
Natural Populations ◽  
Drosophila Buzzatii ◽  
Allozyme Genotype

Isozyme Variation in Natural Populations of Drosophila buzzatii

Evolution ◽  
1976 ◽  
Vol 30 (2) ◽  
pp. 213 ◽  
Author(s):  
J. S. F. Barker ◽  
J. C. Mulley
Keyword(s):  
Natural Populations ◽  
Isozyme Variation ◽  
Drosophila Buzzatii

scholarly journals The Effect of Polymorphic Inversions on Body Size in Two Natural Populations of Drosophila Buzzatii from Argentina

Hereditas ◽  
2004 ◽  
Vol 126 (3) ◽  
pp. 233-237 ◽  
Author(s):  
Juan J. Fanara ◽  
Esteban Hasson ◽  
Constantina Rodríaguez
Keyword(s):  
Body Size ◽  
Natural Populations ◽  
Drosophila Buzzatii

scholarly journals Temporal and Spatial Variation of Inversion Polymorphism in Two Natural Populations of Drosophila Buzzatii

Hereditas ◽  
2004 ◽  
Vol 131 (2) ◽  
pp. 93-99 ◽  
Author(s):  
Pedro J. Fernández Iriarte ◽  
Estrella Levy ◽  
Diego Devincenzi ◽  
Constantina Rodríguez ◽  
Juan J. Fanara ◽  
...  
Keyword(s):  
Spatial Variation ◽  
Natural Populations ◽  
Inversion Polymorphism ◽  
Temporal And Spatial Variation ◽  
Drosophila Buzzatii ◽  
Temporal And Spatial

High-voltage electron microscopy of maxillary gland of spirochete-infected brine shrimp: lesion of efferent tubule

1988 ◽  
Vol 46 ◽  
pp. 362-363
Author(s):  
G. E. Tyson ◽  
M. J. Song
Keyword(s):  
Electron Microscopy ◽  
High Voltage ◽  
Brine Shrimp ◽  
Natural Populations ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
High Voltage Electron ◽  
Infected Adult

Natural populations of the brine shrimp, Artemia, may possess spirochete- infected animals in low numbers. The ultrastructure of Artemia's spirochete has been described by conventional transmission electron microscopy. In infected shrimp, spirochetal cells were abundant in the blood and also occurred intra- and extracellularly in the three organs examined, i.e. the maxillary gland (segmental excretory organ), the integument, and certain muscles The efferent-tubule region of the maxillary gland possessed a distinctive lesion comprised of a group of spirochetes, together with numerous small vesicles, situated in a cave-like indentation of the base of the tubule epithelium. in some instances the basal lamina at a lesion site was clearly discontinuous. High-voltage electron microscopy has now been used to study lesions of the efferent tubule, with the aim of understanding better their three-dimensional structure.Tissue from one maxillary gland of an infected, adult, female brine shrimp was used for HVEM study.

Effect of acid deposition on trichome morphology and dogwood anthracnose biology

1992 ◽  
Vol 50 (1) ◽  
pp. 840-841
Author(s):  
Kyle T. Thornham ◽  
R. Jay Stipes ◽  
Randolph L. Grayson
Keyword(s):  
Acid Deposition ◽  
Disease Incidence ◽  
Natural Populations ◽  
Tree Disease ◽  
Flowering Dogwood ◽  
Discula Destructiva ◽  
Disease Induction ◽  
Dogwood Anthracnose ◽  
Trichome Morphology ◽  
Precipitation Events

Dogwood anthracnose, caused by Discula destructiva (1), is another new catastrophic tree disease that has ravaged natural populations of the flowering dogwood (Cornus florida) in the Appalachians over the past 15 years, and the epidemic is prognosticated to continue (2). An estimated 9.5 million acres have been affected, primarily in the Appalachian Mountains, from VA southwards, alone, and an estimated 50% of all dogwoods in PA have been killed. Since acid deposition has been linked experimentally with disease induction, and since the disease incidence and severity are more pronounced at higher elevations where lower pH precipitation events occur, we investigated the effect of acidic foliar sprays on moiphologic changes in the foliar cuticle and trichomes (3), the initial sites of infection and foci of Discula sporulation.

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