Variation in the hatching response of <i>Ochlerotatus albifasciatus</i> egg batches (Diptera: Culicidae) in temperate Argentina

Egg hatching of winter-collected <i>Ochlcrotatus albifasciatus</i> was studied for six months. Batches of eggs were divided into two groups, one of them was stored in the laboratory at 23°C and 12:12 photoperiod, and the other in the field under dead leaves. Every month, from July to Dec...

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Detalles Bibliográficos
Autores principales:	Campos, Raúl E., Sy, Victoria
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2006
Materias:	Ciencias Naturales Buenos Aires physiology Culicidae reproduction Diapause season Diptera egg dormancy floodwater mosquito installment hatching Ochlerotatus aibifasciatus Argentina
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/36563 http://www.scielo.br/pdf/mioc/v101n1/v101n1a09.pdf
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-36563
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Naturales Buenos Aires physiology Culicidae reproduction Diapause season Diptera egg dormancy floodwater mosquito installment hatching Ochlerotatus aibifasciatus Argentina
spellingShingle	Ciencias Naturales Buenos Aires physiology Culicidae reproduction Diapause season Diptera egg dormancy floodwater mosquito installment hatching Ochlerotatus aibifasciatus Argentina Campos, Raúl E. Sy, Victoria Variation in the hatching response of <i>Ochlerotatus albifasciatus</i> egg batches (Diptera: Culicidae) in temperate Argentina
topic_facet	Ciencias Naturales Buenos Aires physiology Culicidae reproduction Diapause season Diptera egg dormancy floodwater mosquito installment hatching Ochlerotatus aibifasciatus Argentina
description	Egg hatching of winter-collected <i>Ochlcrotatus albifasciatus</i> was studied for six months. Batches of eggs were divided into two groups, one of them was stored in the laboratory at 23°C and 12:12 photoperiod, and the other in the field under dead leaves. Every month, from July to December, eggs from the two groups were flooded under both laboratory and field conditions. Unhatched eggs were returned to the original condition and flooded two more times separated by ten-day intervals. Results show that egg diapause is expressed in different intensities, not only on eggs exposed to different conditions but also in those exposed to the same condition, even when they were laid by the same female. Successive inundations yielded incomplete hatches of eggs, and favored the hatching response in the next flooding. Low environmental temperatures before and during the flooding depressed hatching response. This shows that eggs need a warm period before flooding as well as warm temperatures during flooding, to hatch. As drought period was longer hatching response increased, but this was also accompanied by warmer environmental conditions. The experiment performed in laboratory did not show that increment. Field studies showed that a layer of dead leaves protected eggs from extreme temperatures.
format	Articulo Articulo
author	Campos, Raúl E. Sy, Victoria
author_facet	Campos, Raúl E. Sy, Victoria
author_sort	Campos, Raúl E.
title	Variation in the hatching response of <i>Ochlerotatus albifasciatus</i> egg batches (Diptera: Culicidae) in temperate Argentina
title_short	Variation in the hatching response of <i>Ochlerotatus albifasciatus</i> egg batches (Diptera: Culicidae) in temperate Argentina
title_full	Variation in the hatching response of <i>Ochlerotatus albifasciatus</i> egg batches (Diptera: Culicidae) in temperate Argentina
title_fullStr	Variation in the hatching response of <i>Ochlerotatus albifasciatus</i> egg batches (Diptera: Culicidae) in temperate Argentina
title_full_unstemmed	Variation in the hatching response of <i>Ochlerotatus albifasciatus</i> egg batches (Diptera: Culicidae) in temperate Argentina
title_sort	variation in the hatching response of <i>ochlerotatus albifasciatus</i> egg batches (diptera: culicidae) in temperate argentina
publishDate	2006
url	http://sedici.unlp.edu.ar/handle/10915/36563 http://www.scielo.br/pdf/mioc/v101n1/v101n1a09.pdf
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bdutipo_str	Repositorios
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Variation in the hatching response of <i>Ochlerotatus albifasciatus</i> egg batches (Diptera: Culicidae) in temperate Argentina

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