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אסיף מאגר המחקר החקלאי
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Physiological and ecological studies on the species of Capnodis in Palestine (Col., Buprestidae). I. Studies on the eggs
Year:
1945
Source of publication :
Bulletin of Entomological Research
Authors :
Rivnay, Ezekiel
;
.
Volume :
35
Co-Authors:
Facilitators :
From page:
235
To page:
242
(
Total pages:
8
)
Abstract:

Extract

The economic importance of Capnodis in Palestine is discussed; the various species and their hosts are enumerated.

The egg is described and its shell chemically analysed. It was found that potassium, calcium and magnesium are present as cations and chloride and carbonate as anions.

The effects of relative humidity upon the egg are discussed. It is pointed out that the egg is resistant to a low percentage, but succumbs to a high percentage of relative humidity. The rôle of the egg shell in this matter is important.

The effects of the temperature upon the eggs are discussed. Their development at various temperatures is calculated, and the Blunck formula applied. The mortality of the egg at high and low temperatures is shown in tables.

Note:
Related Files :
Capnodis
insects
Israel
pests
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More details
DOI :
https://doi.org/10.1017/S0007485300023373
Article number:
0
Affiliations:
Database:
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
57465
Last updated date:
02/03/2022 17:27
Creation date:
03/01/2022 14:19
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Scientific Publication
Physiological and ecological studies on the species of Capnodis in Palestine (Col., Buprestidae). I. Studies on the eggs
35
Physiological and ecological studies on the species of Capnodis in Palestine (Col., Buprestidae). I. Studies on the eggs

Extract

The economic importance of Capnodis in Palestine is discussed; the various species and their hosts are enumerated.

The egg is described and its shell chemically analysed. It was found that potassium, calcium and magnesium are present as cations and chloride and carbonate as anions.

The effects of relative humidity upon the egg are discussed. It is pointed out that the egg is resistant to a low percentage, but succumbs to a high percentage of relative humidity. The rôle of the egg shell in this matter is important.

The effects of the temperature upon the eggs are discussed. Their development at various temperatures is calculated, and the Blunck formula applied. The mortality of the egg at high and low temperatures is shown in tables.

Scientific Publication
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