Oöcyte resorption during ovarian development in the blowfly Lucilia cuprina

1979 ◽  
Vol 25 (2) ◽  
pp. 147-153 ◽  
Author(s):  
L. Barton Browne ◽  
A.C.M. van Gerwen ◽  
Keith L. Williams
Keyword(s):  
Ovarian Development ◽  
Lucilia Cuprina ◽  
Oocyte Resorption

Oogenesis in Lucilia Cuprina (Wied.) (Diptera: Calliphoridae). Ii. The Effect of Aziridinyl Chemosterilants on Oogenesis.

1979 ◽  
Vol 27 (3) ◽  
pp. 349 ◽  
Author(s):  
GAC Beattie
Keyword(s):  
Direct Effect ◽  
Nurse Cell ◽  
Ovarian Development ◽  
Fat Body ◽  
Endocrine System ◽  
Lucilia Cuprina ◽  
Follicle Cells ◽  
Cell Nuclei

Inhibition of ovarian development in L. cuprina by two aziridinyl chemosterilants, N,N'-hexamethylenebis(1-aziridinecarboxamide) and N. N'bisaziridinyl-N"-cyclohexylphosphine sulphide, was due to the direct effect of the sterilants on the ovary. The sterilants caused infecundity by interfering with mitosis in the follicle cells. Contrary to the accepted view, no evidence was obtained to suggest that infecundity resulted from inhibition of endomitosis in the nurse cell nuclei. Neither sterilant prevented the digestion of protein by the midgut, nor did they prevent the endocrine system and fat body from functioning.

Ovarian development in females of the Australian sheep blowfly Lucilia cuprina (Diptera: Calliphoridae) fed on sheep faeces and the effect of ivermectin residues

1991 ◽  
Vol 81 (3) ◽  
pp. 249-256 ◽  
Author(s):  
David F. Cook
Keyword(s):  
Control Strategy ◽  
Ovarian Development ◽  
Lucilia Cuprina ◽  
Ivermectin Treatment ◽  
Feeding Frequency ◽  
Continuous Access ◽  
Australian Sheep ◽  
Continuous Feeding ◽  
The Cost

AbstractThis study demonstrates that only a proportion of Lucilia cuprina (Wiedemann) females, which have fed exclusively on sheep dung collected from spring improved pastures, are able to mature a complement of oocytes at the cost of high resorption. Fifty percent of females developed mature oocytes after 11 d of continuous feeding on sheep dung. After 14 d feeding, 80% of females had matured an average of 143 eggs. Females given ad lib access to sheep's liver developed mature oocytes within 2–3 d feeding, producing an average of 223 eggs. Results show that sheep dung is a resource used by L. cuprina adults, but by itself appears to be a poor source of protein for field females to mature oocytes. Females given continuous access to dung collected from sheep 18 h after being drenched with ivermectin, were virtually unable to develop oocytes beyond the resting stage after 10 d feeding. Female adults in particular, became distended with fluid over successive days feeding and both sexes suffered significantly higher mortality compared with adults fed on untreated sheep dung. Knowledge on the feeding frequency and amounts of sheep dung ingested by L. cuprina adults may enable an assessment of the potential for manipulation of ivermectin treatment in a control strategy.

Some Relationships Between Diet and Ovarian Development in Lucilia Cuprina (Wied.) (Diptera: Calliphoridae).

1976 ◽  
Vol 24 (1) ◽  
pp. 87 ◽  
Author(s):  
AD Clift ◽  
FJD McDonald
Keyword(s):  
Ovarian Development ◽  
Protein Source ◽  
Lucilia Cuprina ◽  
Protein Sources ◽  
Influence Of Water ◽  
Separate Source

The influence of water, carbohydrate and protein on ovarian development was investigated. Carrion was the most effective of the protein sources tested, followed by faeces of dog, rabbit, horse and possum in that order. Sucrose and water were both required for complete ovarian development. If the protein source was dog faeces, a separate source of water was not required. If a complete batch of eggs could not be produced, ovarian development ceased, usually at the onset of yolk deposition.

The relationship between fecundity and oocyte resorption in field populations of Lucilia cuprina

1985 ◽  
Vol 39 (1) ◽  
pp. 91-99 ◽  
Author(s):  
W. G. Vogt ◽  
T. L. Woodburn ◽  
B. A. Ellem ◽  
A. C. M. Gerwen ◽  
L. Barton Browne ◽  
...  
Keyword(s):  
Lucilia Cuprina ◽  
The Relationship ◽  
Oocyte Resorption

Estimation of age of females in field populations of Lucilia cuprina (Wiedemann) (Diptera: Calliphoridae) using ambient temperature and solar radiation

1978 ◽  
Vol 68 (2) ◽  
pp. 251-261 ◽  
Author(s):  
T. L. Woodburn ◽  
W. G. Vogt ◽  
R. L. Kitching
Keyword(s):  
Solar Radiation ◽  
Ambient Temperature ◽  
Ovarian Development ◽  
Lucilia Cuprina ◽  
Physiological Age ◽  
Threshold Temperature ◽  
Field Cage ◽  
Solar Radiation Intensity ◽  
Temperature Excess ◽  
Development Threshold

AbstractA previously published method for determining the physiological age of female Lucilia cuprina (Wied.), based on a linear relationship between their rates of ovarian development and temperature, was tested under field-cage conditions. It was found that ovarian development was more rapid than that predicted by thermal summation based on ambient temperature. A re-examination of the rate of development-ambient temperature relationship, over a wider temperature range that that used previously, showed that the development threshold temperature was 8·2°C rather than 11·3°C. Thermal summation using the revised threshold also fell short of the observed day-degree totals. An effective temperature for ovarian development (ambient temperature plus a temperature excess proportional to the incoming solar radiation intensity) was fitted to the data from the field cage. This relationship gave accurate predictions of ovarian development (±8%) for flies that were released into the field.

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