Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronata

Seeds of Mimosa bimucronata are heavily infested (pre-dispersal predation) by the bruchid beetle Acanthoscelides schrankiae in Brazil. In this study, firstly we set up experiments to assess seed germination under seven and six different light and temperature regimes, respectively, and then we evalua...

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Autores principales:	TOMAZ,CAMILA A, KESTRING,DÉBORA, ROSSI,MARCELO N
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2007
Materias:	Acanthoscelides schrankiae Bruchidae germination Mimosa bimucronata seed predation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000400002
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spelling	oai:scielo:S0716-976020070004000022008-04-17Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronataTOMAZ,CAMILA AKESTRING,DÉBORAROSSI,MARCELO N Acanthoscelides schrankiae Bruchidae germination Mimosa bimucronata seed predation Seeds of Mimosa bimucronata are heavily infested (pre-dispersal predation) by the bruchid beetle Acanthoscelides schrankiae in Brazil. In this study, firstly we set up experiments to assess seed germination under seven and six different light and temperature regimes, respectively, and then we evaluated the ability of seeds to germinate after predation. We tested the hypothesis that the non-predated seeds from infested fruits may respond differently when set for germination than those seeds of non-infested fruits. We also hypothesized that predation may increase the production of unviable seeds. Seeds under 18 hours of light presented the highest percentage of germination, and the alternating temperature 20-30 °C was considered as optimum for germination (abnormal seedlings were not considered as a successful germination). Germination of seeds from non-infested fruits was significantly higher than germination of non-predated seeds from infested fruits, and predation also caused a significant increase in the proportion of dead seeds. Our results also show a positive correlation between proportions of unviable seeds and predated seeds. These results demonstrated that seeds of M. bimucronata are strongly affected by predation because predated seeds did not germinate and non-predated seeds had their viability reduced when located in infested fruits, supporting our hypothesisinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.40 n.3 20072007-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000400002en10.4067/S0716-97602007000400002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Acanthoscelides schrankiae Bruchidae germination Mimosa bimucronata seed predation
spellingShingle	Acanthoscelides schrankiae Bruchidae germination Mimosa bimucronata seed predation TOMAZ,CAMILA A KESTRING,DÉBORA ROSSI,MARCELO N Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronata
description	Seeds of Mimosa bimucronata are heavily infested (pre-dispersal predation) by the bruchid beetle Acanthoscelides schrankiae in Brazil. In this study, firstly we set up experiments to assess seed germination under seven and six different light and temperature regimes, respectively, and then we evaluated the ability of seeds to germinate after predation. We tested the hypothesis that the non-predated seeds from infested fruits may respond differently when set for germination than those seeds of non-infested fruits. We also hypothesized that predation may increase the production of unviable seeds. Seeds under 18 hours of light presented the highest percentage of germination, and the alternating temperature 20-30 °C was considered as optimum for germination (abnormal seedlings were not considered as a successful germination). Germination of seeds from non-infested fruits was significantly higher than germination of non-predated seeds from infested fruits, and predation also caused a significant increase in the proportion of dead seeds. Our results also show a positive correlation between proportions of unviable seeds and predated seeds. These results demonstrated that seeds of M. bimucronata are strongly affected by predation because predated seeds did not germinate and non-predated seeds had their viability reduced when located in infested fruits, supporting our hypothesis
author	TOMAZ,CAMILA A KESTRING,DÉBORA ROSSI,MARCELO N
author_facet	TOMAZ,CAMILA A KESTRING,DÉBORA ROSSI,MARCELO N
author_sort	TOMAZ,CAMILA A
title	Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronata
title_short	Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronata
title_full	Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronata
title_fullStr	Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronata
title_full_unstemmed	Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronata
title_sort	effects of the seed predator acanthoscelides schrankiae on viability of its host plant mimosa bimucronata
publisher	Sociedad de Biología de Chile
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000400002
work_keys_str_mv	AT tomazcamilaa effectsoftheseedpredatoracanthoscelidesschrankiaeonviabilityofitshostplantmimosabimucronata AT kestringdebora effectsoftheseedpredatoracanthoscelidesschrankiaeonviabilityofitshostplantmimosabimucronata AT rossimarcelon effectsoftheseedpredatoracanthoscelidesschrankiaeonviabilityofitshostplantmimosabimucronata
_version_	1718441420217384960

Effects of the seed predator Acanthoscelides schrankiae on viability of its host plant Mimosa bimucronata

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