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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Resorption of phosphate, calcium and magnesium in the in vitro locust rectum

Andrusiak, Edward William January 1974 (has links)
The ability of the locust rectum in vitro to resorb Ca⁺⁺, Mg⁺⁺ , and PO₄ was studied. The rectum has a low permeability to Ca⁺, but Ca⁺ is not accumulated against concentration differences. Mg⁺ was not accumulated in the basal compartment of the rectal sac even when Mg⁺ concentration gradients were favourable for net diffusion. Phosphate was found to be accumulated by the rectum against a threefold concentration difference. The rectal tissue incorporated inorganic phosphate into organic forms, but phosphorus transferred into the basal compartment was found to be in the form of inorganic phosphate. Uptake into the basal compartment can be described by Michaelis-Menton saturation kinetics. The resorption of water by the rectum did not increase (by solute drag) the amount of PO₄ accumulated in the basal compartment, except at very high PO₄ concentrations in the apical bathing medium. Metabolic poisons such as KCN and IAA inhibited PO₄ accumulation in the basal compartment but did not inhibit PO₄ entry into the tissue from the apical bathing medium. Arsenate, a competitive inhibitor of PO₄ uptake in other systems, inhibited PO₄ entry into the tissue. A mechanism for PCL uptake into the tissue is proposed. / Science, Faculty of / Zoology, Department of / Graduate
12

Identification of the immature stages of grasshoppers (Acrididae) of Quebec.

Crozier, Lorne M. January 1977 (has links)
No description available.
13

A revision of the genus Taphronota Stål, 1873 (Orthoptera; Acridoidea; Pyrgomorphidae).

Bhatnagar, Sheela. January 1973 (has links)
No description available.
14

Population dynamics, bioenergetics and feeding biology of Melanoplus bivittatus (Say) and M. femurrubrum (De Geer) (Orthoptera: Acrididae).

Bailey, Clyde Gregory. January 1973 (has links)
No description available.
15

The respiratory system of the Carolina locust (Dissosteira carolina Linn.)

Vinal, Stuart Cunningham 01 January 1917 (has links) (PDF)
The present paper, which is offered as a portion of a thesis for the degree of Master of Science at the Massachusetts Agricultural College, is one of a series of studies being conducted at this institution on the anatomy of the Carolina locust for the purpose of furnishing a description of the morphology of a common and widely distributed insect which is both primitive in its organization and of sufficient size to be readily dissected. In the preparation of this paper I have received much encouragement and assistance from Dr. H. T. Fernald, Dr. G. C. Crampton, and Dr. V. S. Regan, and I would take this opportunity of expressing my appreciation of their kindly interest and advice*
16

Chemosensory development and integration in Locusta migratoria

Rogers, Stephen M. January 1998 (has links)
No description available.
17

A molecular analysis of embryonic development in the short germ band insect, Schistocerca gregaria

Tear, Guy J. C. January 1990 (has links)
No description available.
18

Inheritance of some morphological characteristics in the grouse locusts (Apotettix eurycephalus Hancock)

Dean, Loua Marjorie January 1933 (has links)
No description available.
19

The identification of the eggs of grasshoppers by means of the chorionic sculpturing

Tuck, Joseph Benjamin January 1939 (has links)
No description available.
20

Colour pattern polymorphism in the Australian plague locust, Chortoicetes terminifera (Orthoptera: Acrididae)

Byrne, Osman Roy. January 1962 (has links) (PDF)
Typewritten Includes bibliographical references

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