Aspectos citológicos de Drosophila de Santa Cruz y San Cristóbal, Galápagos (I) / (Registro nro. 3404)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03004nab a22002777u 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EC-PaCDF |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20210720161014.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 060603t19751975||||||||||||||||||||spa|| |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EC-PaCDF |
| Language of cataloging | spa |
| Transcribing agency | EC-PaCDF |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | spa |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 595.774 |
| Edition number | 23 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Delgado Zúñiga, Raúl. |
| Relator term | autor |
| 245 10 - TITLE STATEMENT | |
| Title | Aspectos citológicos de Drosophila de Santa Cruz y San Cristóbal, Galápagos (I) / |
| Statement of responsibility, etc. | Raúl Delgado Zúñiga. |
| 260 3# - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Date of publication, distribution, etc. | 1975. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | : 37-75 p. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Fueron recogidas muestras de Drosophiia de las Islas Santa Cruz (Indefatigable) y San Cristóbal (Chatam) de Galápagos. <br/>2. Se buscaron muestras de Drosophiia en la isla deshabitada, de clima seco y suelo agreste de Pinzón. Aquí no fue hallada ninguna muestra de Drosophiia. <br/>3. Se hicieron estudios citológicos de los cromosomas de las glándulas salivales de la población de Drosophiia encontrada en Puerto Ayora y la Estación Charles Darwin. <br/>4. Por sus características morfológicas y citológicas se ha podido determinar que pertenecen a la especie Drosophiia simulans. Se puede concluir que esta especie de Drosophiia es una especie introducida por el hombre y no ha sufrido mutaciones o cambios a nivel cromosomal. <br/>5. Se hicieron estudios autoradiográficos de Drosophiia simulans para ver la replicación del DNA del cromosoma X de los machos, con respecto a los autosomas. Gran parte de las regiones del X del macho replican su DNA más rápidamente que los autosomas, pero se mantienen algunas zonas del mismo, consideradas como heterocromáticas marcadas hasta finalizar la replicación total del núcleo.<br/> |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Samples of Drosophiia were collected from Island Santa Cruz (Indefatigable) and Island San Cristóbal (Chatam) Galapagos, Ecuador. <br/>2. Drosophiia could not be found in Pinzón (Duncan), one of the small and arid islands of the Archipelago. <br/>3. Drosophiia collected in the town of Puerto Ayora and the Charles Darwin Research Station (Island Santa Cruz) were studied at the chromosomal level on cytological preparations of salivary gland chromosomes. <br/>4. The chromosomal analysis showed that these flies are identical with Drosophiia simulans. The results, therefore, show that this species has not suffered mutations or alterations at the chromosomal level in the Galápagos, and therefore, suggest a recent introduction to the Islands by man. <br/>5. Autoradiographic studies in Drosophiia simulans (from Europe) of DNA replication in the X chromosome of the male revealed that most of the X chromosome replicates its DNA in advance of the autosomes. Some regions of the X chromosome, considered as heterochromatic, replicate later, remaining labelled until the total nuclear replication is completed<br/> |
| 546 ## - LANGUAGE NOTE | |
| Language note | Español |
| 550 ## - ISSUING BODY NOTE | |
| CDF Contribution no. | 181 |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Drosophila |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Santa Cruz |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | San Cristobal |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Galapagos |
| 773 0# - HOST ITEM ENTRY | |
| Title | Revista Universidad Católica |
| Place, publisher, and date of publication | Quito |
| Related parts | No. 8 (Mayo 1975), pp. 37-75. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Artículo |
| Withdrawn status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection code | Home library | Current library | Shelving location | Date acquired | Total Checkouts | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | Galápagos | Corley Smith Library | Corley Smith Library | Artículos | 03/06/2006 | 595.774 DEL 1975 | 2021-0720 | 01/02/2011 | 01/02/2011 | Artículo |