SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS
Interspecific competition between two species of Drosophila: D. ananassae and D. melanogaster was studied at the larval and adult stages. It was found that when D. ananassae and D. melanogaster adult flies were co-cultured, very few D. ananassae offspring could be recovered in the first generation....
| Päätekijät: | , |
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| Aineistotyyppi: | Online |
| Kieli: | eng |
| Julkaistu: |
Instituto de Ecología, A.C.
2013
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| Linkit: | https://azm.ojs.inecol.mx/index.php/azm/article/view/1598 |
| _version_ | 1799770226505547776 |
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| author | Singh, Arvind K. Kumar, Sanjay |
| author_facet | Singh, Arvind K. Kumar, Sanjay |
| author_sort | Singh, Arvind K. |
| collection | AZM |
| description | Interspecific competition between two species of Drosophila: D. ananassae and D. melanogaster was studied at the larval and adult stages. It was found that when D. ananassae and D. melanogaster adult flies were co-cultured, very few D. ananassae offspring could be recovered in the first generation. To investigate the reasons of D. ananassae apparent inhibition, mating behavior of D. ananassae in the presence of D. melanogaster was observed and it was found that the number of matings deviated significantly from those recorded when it was kept alone. To determine larval development of D. ananassae after being initially exposed to D. melanogaster, the females of the two species were separated in different food bottles after 3 days of being kept together. Good D. ananassae cultures could be recovered indicating that initial exposure of D. ananassae to D. melanogaster did not hamper its egg laying capacity or eclosion. However, if they remained together, no D. ananassae could be recovered from larval diet, suggesting that either D. melanogaster adults interfered with fertilization or egg-laying, or their larvae eliminated competitors. To see whether there is larval competition, polytene chromosomes of 54 third instar larvae were analyzed out of which only 5.56 percent were found to be D. ananassae. Thus, if a few eggs are laid by D. ananassae and they develop, all the while facing competition from D. melanogaster and till the third instar larval stage is reached, there is almost complete elimination of D. ananassae. Thus, interspecific competition exists at all stages of life cycle and few if any D. ananassae flies emerge. |
| format | Online |
| id | azm-article-1598 |
| institution | Acta Zoológica Mexicana |
| language | eng |
| publishDate | 2013 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | azm-article-15982022-04-05T20:47:10Z SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS Singh, Arvind K. Kumar, Sanjay Interspecific competition mating propensity co-culture fecundity larval competition D. ananassae Competencia interespecífica co-cultivo fecundidad competencia larval D. ananassae Interspecific competition between two species of Drosophila: D. ananassae and D. melanogaster was studied at the larval and adult stages. It was found that when D. ananassae and D. melanogaster adult flies were co-cultured, very few D. ananassae offspring could be recovered in the first generation. To investigate the reasons of D. ananassae apparent inhibition, mating behavior of D. ananassae in the presence of D. melanogaster was observed and it was found that the number of matings deviated significantly from those recorded when it was kept alone. To determine larval development of D. ananassae after being initially exposed to D. melanogaster, the females of the two species were separated in different food bottles after 3 days of being kept together. Good D. ananassae cultures could be recovered indicating that initial exposure of D. ananassae to D. melanogaster did not hamper its egg laying capacity or eclosion. However, if they remained together, no D. ananassae could be recovered from larval diet, suggesting that either D. melanogaster adults interfered with fertilization or egg-laying, or their larvae eliminated competitors. To see whether there is larval competition, polytene chromosomes of 54 third instar larvae were analyzed out of which only 5.56 percent were found to be D. ananassae. Thus, if a few eggs are laid by D. ananassae and they develop, all the while facing competition from D. melanogaster and till the third instar larval stage is reached, there is almost complete elimination of D. ananassae. Thus, interspecific competition exists at all stages of life cycle and few if any D. ananassae flies emerge. Se estudió la competencia interespecífica entre dos especies de Drosophila: D. ananassae y D. melanogaster en estado larvario y adulto. Se encontró que al criar simultáneamente adultos de D. ananassae y D. melanogaster, muy poca progenie de primera generación de D. ananassae podia recuperarse. Para investigar las causas de la aparente inhibición de D. ananassae, se observó el comportamiento de apareamiento de D. ananassae en presencia de D. melanogaster y se observó que el número de apareamientos se desvió significatívamente de aquel registrado cuando esta especie se mantuvo sola. Para observar el desarrollo larvario de D. ananassae después de la exposición a D. melanogaster, hembras de ambas especies fueron separadas en botes de alimento después de tres días de confinamiento conjunto. Se obtuvieron buenas crías de D. ananassae, indicando que la exposición de D. ananassae a D. melanogaster no afectó su capacidad de oviposición ni su fertilidad. Sin embargo, cuando ambas especies permanecieron juntas, no se recuperó D. ananassae de la dieta larvaria lo que sugiere que los adultos de D.melanogaster interfirieron con la fertilización u oviposición, o bien sus larvas eliminaron la competencia. Para establecer la existencia de competencia larvaria se examinaron los cromosomas polténicos de 54 larvas de tercer estadio entre las cuáles solo el 5.56 por ciento resultaron ser de D. ananassae. Por lo tanto, si algunos huevos son depositados por D. ananassae y se desarrollan, éstos enfrentan la competencia de D. melanogaster durante todo el desarrollo y hasta el tercer estadio, llegando a la casi total eliminación de D. ananassae. Existe competencia interespecifica en todas las etapas del ciclo de vida resultando en una casi nula emergencia de D. ananassae. Instituto de Ecología, A.C. 2013-05-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Original articles Artículos originales application/pdf https://azm.ojs.inecol.mx/index.php/azm/article/view/1598 10.21829/azm.2013.2931598 ACTA ZOOLÓGICA MEXICANA (N.S.); Vol. 29 No. 3 (2013); 563-573 ACTA ZOOLÓGICA MEXICANA (N.S.); Vol. 29 Núm. 3 (2013); 563-573 2448-8445 0065-1737 eng https://azm.ojs.inecol.mx/index.php/azm/article/view/1598/1712 Derechos de autor 2018 Acta Zoológica Mexicana (parte2) http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Singh, Arvind K. Kumar, Sanjay SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS |
| title | SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS |
| title_full | SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS |
| title_fullStr | SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS |
| title_full_unstemmed | SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS |
| title_short | SUPPRESSION OF DROSOPHILA ANANASSAE FLIES OWING TO INTERSPECIFIC COMPETITION WITH D. MELANOGASTER UNDER ARTIFICIAL CONDITIONS |
| title_sort | suppression of drosophila ananassae flies owing to interspecific competition with d. melanogaster under artificial conditions |
| url | https://azm.ojs.inecol.mx/index.php/azm/article/view/1598 |
| work_keys_str_mv | AT singharvindk suppressionofdrosophilaananassaefliesowingtointerspecificcompetitionwithdmelanogasterunderartificialconditions AT kumarsanjay suppressionofdrosophilaananassaefliesowingtointerspecificcompetitionwithdmelanogasterunderartificialconditions |
