Rhynchosciara

Pavan, C.; Cunha, A. Brito da; Sanders, Patricia

doi:10.1007/978-1-4615-7145-2_8

Cited by 5 publications

(5 citation statements)

References 102 publications

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“…Also, a number of puffs have a morphology similar to the characteristic DNA puffs of Sciaridae, e.g., section lOOA (Fig. 16C) (Berendes 1973;Pavan et al 1975;Gabrusewycz-Garsia 1975). It is not known whether DNA puffs, resulting from local DNA amplification, occur in C. capitata.…”

Section: Discussionmentioning

confidence: 95%

Polytene chromosome maps in the Medfly Ceratitis capitata

Zacharopoulou¹

1990

Genome

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Polytene chromosome maps of the five autosomes from salivary gland cells in Ceratitis capitata are presented, and the more characteristic features of each element are described. The correlation of the polytene elements to miotic chromosomes and linkage groups is established by using various Y-autosome and autosome-autosome translocation lines. Two loci, dp (black pupal case) and w (white pupal case), are mapped to the third and fifth chromosome, respectively. In addition to the polytene maps presented, some extra figures of specific chromosomal regions are given for easier identification of each polytene element.Key words: polytene chromosome maps, Ceratitis capitata.

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Section: Discussionmentioning

confidence: 95%

Polytene chromosome maps in the Medfly Ceratitis capitata

Zacharopoulou¹

1990

Genome

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“…Indeed it has been noted that more than one band may participate in puff formation. Some puffs, for example that in section 94C, show dark staining characteristics of the DNA puffs described in salivary gland chromosomes of the Sciaridae (Pavan et al 1975). If these puffs are similar, the polytene complement of C. capitata must have a variety of regulatory mechanisms.…”

Section: Discussionmentioning

confidence: 96%

Polytene chromosome mapping in Ceratitis capitata (Diptera: Tephritidae)

Bedo¹

1987

Genome

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Polytene chromosome reference maps of the five autosomes of Ceratitis capitata from male pupal orbital bristle trichogen cells are presented and a correlation is established between two of them and the two largest of the five autosomes in the haploid mitotic complement. Characteristic features of each chromosome are described identifying areas that are difficult to analyze and noting the existence of common alternative band expression. A quantitative analysis of the mitotic karyotype of C. capitata indicates that the two smallest autosome pairs cannot be reliably distinguished. This may present problems with future attempts to establish homologies between the remaining mitotic and polytene chromosomes. A comparison of polytene chromosome banding patterns from salivary gland and trichogen cells failed to find any homologous regions, or even to identify homologous chromosomes. The banding differences are not explained by variation in puffing patterns, heterochromatin expression, or polyteny levels, but appear to reflect fundamental differences in banding patterns of the chromosomes in each tissue. Key words: Ceratitis capitata, polytene chromosome map, mitotic chromosome measurements.

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“…The phenomenon, which was first described by Theodor Boveri (4) for Parascaris equorum, has since been found to occur in phylogenetically widespread species of nematodes, insects, crustaceans and hypotrichous ciliates (1)(2)(3). In Ascaris lumbricoides var.…”

Section: Introductionmentioning

confidence: 99%

“…During early cleavage divisions of a variety of organisms a process called chromatin diminution can be observed: portions of chromatin are eliminated from the presumptive somatic cells thus leading to somatic cells which contain less genetic material than germ line cells (see [1][2][3], for review). The phenomenon, which was first described by Theodor Boveri (4) for Parascaris equorum, has since been found to occur in phylogenetically widespread species of nematodes, insects, crustaceans and hypotrichous ciliates (1)(2)(3).…”

Section: Introductionmentioning

confidence: 99%