OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILA

Oviposition site selection plays a central role in the evolutionary ecology of Drosophila, due to its high relation with the pre-adults fitness since the site selection determines the interactions between the species sharing common resources. Drosophila subobscura Collin which was detected in Chile...

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Autor principal:	Alamiri,Zaid
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2000
Materias:	Oviposition behaviour D. subobscura colonisation preference - performance relationship substrate physical characters
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382000000200001
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spelling	oai:scielo:S0717-653820000002000012001-09-10OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILAAlamiri,Zaid Oviposition behaviour D. subobscura colonisation preference - performance relationship substrate physical characters Oviposition site selection plays a central role in the evolutionary ecology of Drosophila, due to its high relation with the pre-adults fitness since the site selection determines the interactions between the species sharing common resources. Drosophila subobscura Collin which was detected in Chile for the first time in 1978, was found coexisting in the wild, as adults, over apple and raspberry, with D. hydei, D. immigrans and D. melanogaster. It was observed that raspberry has been used only by Drosophila subobscura as a breeding site; meanwhile sharing apple with the others. Our principal purpose was to shed light on the ecological significance of the new species oviposition behaviour; analysing also some of the preference-performance relationship. Two experiments of non-choice and choice, were carried out. The results showed that all species used both substrates as a breeding site. However, D. subobscura and D. melanogaster chose significantly raspberry, whereas D. immigrans and D. hydei preferred apple. In relation to preference-performance, only D. melanogaster expressed that positively in terms of short development time and high viability. The physical characters of the substrate could explain the oviposition preference. These results constitute the first empirical evidence that D. subobscura is constantly colonising new breeding sites, if it is known that raspberry has been cultivated for one decade.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.64 n.2 20002000-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382000000200001en10.4067/S0717-65382000000200001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Oviposition behaviour D. subobscura colonisation preference - performance relationship substrate physical characters
spellingShingle	Oviposition behaviour D. subobscura colonisation preference - performance relationship substrate physical characters Alamiri,Zaid OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILA
description	Oviposition site selection plays a central role in the evolutionary ecology of Drosophila, due to its high relation with the pre-adults fitness since the site selection determines the interactions between the species sharing common resources. Drosophila subobscura Collin which was detected in Chile for the first time in 1978, was found coexisting in the wild, as adults, over apple and raspberry, with D. hydei, D. immigrans and D. melanogaster. It was observed that raspberry has been used only by Drosophila subobscura as a breeding site; meanwhile sharing apple with the others. Our principal purpose was to shed light on the ecological significance of the new species oviposition behaviour; analysing also some of the preference-performance relationship. Two experiments of non-choice and choice, were carried out. The results showed that all species used both substrates as a breeding site. However, D. subobscura and D. melanogaster chose significantly raspberry, whereas D. immigrans and D. hydei preferred apple. In relation to preference-performance, only D. melanogaster expressed that positively in terms of short development time and high viability. The physical characters of the substrate could explain the oviposition preference. These results constitute the first empirical evidence that D. subobscura is constantly colonising new breeding sites, if it is known that raspberry has been cultivated for one decade.
author	Alamiri,Zaid
author_facet	Alamiri,Zaid
author_sort	Alamiri,Zaid
title	OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILA
title_short	OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILA
title_full	OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILA
title_fullStr	OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILA
title_full_unstemmed	OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILA
title_sort	oviposition behaviour in four species of drosophila
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2000
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382000000200001
work_keys_str_mv	AT alamirizaid ovipositionbehaviourinfourspeciesofdrosophila
_version_	1718442022446039040

OVIPOSITION BEHAVIOUR IN FOUR SPECIES OF DROSOPHILA

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