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

The relationship between larval and adult size of the Australian sheep blowfly Lucilia Cuprina (Wied.)

1955 ◽  
Vol 3 (3) ◽  
pp. 346 ◽  
Author(s):  
LG Webber
Keyword(s):  
Histological Examination ◽  
Lucilia Cuprina ◽  
Adult Size ◽  
Larval Food ◽  
Australian Sheep ◽  
The Relationship

Quantitative formulations are derived for the relationships between the adequacy of larval food, the weight of puparia, the length of thorax of adult flies, the number of ovarioles in adults, and the size and weight of eggs produced by adults of Lucilia cuprina (Wied.). Smaller adults grown from starved larvae lay fewer eggs, but mature eggs from flies of widely differing sizes vary little in size and weight. The number of eggs laid per batch provides a good indication of the number of ovarioles present. There is no evidence of resorption of eggs retained in the ovaries, but the eggs are no longer viable after 17 days, and histological examination shows that breakdown of the eggs has taken place.

Genetic maps of the sheep blowfly Lucilia cuprina: linkage-group correlations with other dipteran genera

Genome ◽  
1993 ◽  
Vol 36 (3) ◽  
pp. 495-506 ◽  
Author(s):  
G. L. Weller ◽  
G. G. Foster
Keyword(s):  
Drosophila Melanogaster ◽  
Ceratitis Capitata ◽  
Genetic Maps ◽  
Lucilia Cuprina ◽  
Linkage Data ◽  
Linkage Maps ◽  
Linkage Groups ◽  
Relationship Of ◽  
The Relationship ◽  
Linkage Relationships

Linkage data and revised genetic maps for 72 autosomal loci in Lucilia cuprina are presented. Comparison of the linkage relationships of biochemically and morphologically similar mutations in Ceratitis capitata, Drosophila melanogaster, and Musca domestica supports the hypothesis that the major linkage elements have survived relatively intact during evolution of the higher Diptera. The relationship of the linkage groups of the mosquito Aedes aegypti to these species is less clear.Key words: Lucilia, Drosophila, Musca, Ceratitis, linkage maps.

Relationship between mated status of females and their stage of ovarian development in field populations of the australian sheep blowfly, lucilia cuprina(wiedemann) (diptera: calliphoridae)

1987 ◽  
Vol 77 (4) ◽  
pp. 609-615 ◽  
Author(s):  
L. Barton Browne ◽  
A. C. M. Van Gerwen ◽  
P. H. Smith
Keyword(s):  
Sex Ratio ◽  
Ovarian Development ◽  
Operational Sex Ratio ◽  
Lucilia Cuprina ◽  
Sexually Active ◽  
Australian Sheep ◽  
Rich Material ◽  
Protein Rich ◽  
The Relationship

AbstractIn field populations of Lucilia cuprina (Wiedemann) in Australia, there was a very low percentage of mating in females that, on the evidence of their stage of ovarian development, had not yet consumed protein-rich material. Virtually all females whose oocytes had reached early vitellogenesis had mated. Thus, most females of this anautogenous species had mated soon after their ovarian development had proceeded beyond the resting stage at which development ceases in females that have not consumed protein. The relationship between mated status and ovarian development of hand-caught females did not differ from that for females which had been allowed to remain for more than 1 h with sexually active males in the collection chamber of traps. Thus mating occurred rarely, if at all, in the trap chambers, which suggests that females in the field mate soon after first becoming sexually receptive. This, together with knowledge that females of this species do not remate readily, indicates that the operational sex ratio in L. cuprina is heavily male-biased.

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

Interstellar gas in the central region of the Galaxy

1967 ◽  
Vol 31 ◽  
pp. 239-251 ◽  
Author(s):  
F. J. Kerr
Keyword(s):  
Central Region ◽  
Galactic Plane ◽  
Neutral Hydrogen ◽  
Continuum Emission ◽  
Galactic Centre ◽  
Interstellar Gas ◽  
Hydrogen Recombination ◽  
The Galaxy ◽  
Centre Region ◽  
The Relationship

A review is given of information on the galactic-centre region obtained from recent observations of the 21-cm line from neutral hydrogen, the 18-cm group of OH lines, a hydrogen recombination line at 6 cm wavelength, and the continuum emission from ionized hydrogen.Both inward and outward motions are important in this region, in addition to rotation. Several types of observation indicate the presence of material in features inclined to the galactic plane. The relationship between the H and OH concentrations is not yet clear, but a rough picture of the central region can be proposed.

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Choosing a Markov blanket

2020 ◽  
Vol 43 ◽  
Author(s):  
Thomas Parr
Keyword(s):  
Markov Blanket ◽  
Target Article ◽  
The Relationship

Abstract This commentary focuses upon the relationship between two themes in the target article: the ways in which a Markov blanket may be defined and the role of precision and salience in mediating the interactions between what is internal and external to a system. These each rest upon the different perspectives we might take while “choosing” a Markov blanket.

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