Cytogenetic effect of Alternanthera philoxeroides (alligator weed) on Agasicles hygrophila (Coleoptera: Chrysomelidae) in its native range

Plant genotypic effects can alter insects' ability of utilizing their host plant. Alligator weed, Alternanthera philoxeroides, is a South American amphibious Amaranthaceae, which invades aquatic and terrestrial habitats. Populations with varying morphotypes and cytotypes were identified and fur...

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Detalles Bibliográficos
Autores principales: Sosa, Alejandro Joaquín, Greizerstein, Eduardo José
Publicado: 2011
Materias:
Biological invasion
Cytotype diversity
Host range
Hybridization
Insect fitness
Agasicles hygrophila
Alligator
Alternanthera philoxeroides
Amaranthaceae
Chrysomelidae
Coleoptera
Hexapoda
Hygrophila
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10499644_v57_n2_p138_Telesnicki
http://hdl.handle.net/20.500.12110/paper_10499644_v57_n2_p138_Telesnicki
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10499644_v57_n2_p138_Telesnicki
record_format dspace
spelling paper:paper_10499644_v57_n2_p138_Telesnicki2023-06-08T16:01:25Z Cytogenetic effect of Alternanthera philoxeroides (alligator weed) on Agasicles hygrophila (Coleoptera: Chrysomelidae) in its native range Sosa, Alejandro Joaquín Greizerstein, Eduardo José Biological invasion Cytotype diversity Host range Hybridization Insect fitness Agasicles hygrophila Alligator Alternanthera philoxeroides Amaranthaceae Chrysomelidae Coleoptera Hexapoda Hygrophila Plant genotypic effects can alter insects' ability of utilizing their host plant. Alligator weed, Alternanthera philoxeroides, is a South American amphibious Amaranthaceae, which invades aquatic and terrestrial habitats. Populations with varying morphotypes and cytotypes were identified and further associated with a polyploid hybrids complex in Argentina, which probably is the centre of origin and diversification of alligator weed. The current model of the hybrid complex formation proposes that diploid ancestors gave rise to allotetraploids and allohexaploids.Agasicles hygrophila is a monophagous chrysomelid beetle which successfully controls A. philoxeroides in regions with mild winters and where the weed grows in aquatic habitats. However, plant genetic characteristics could constrain insect development and reproduction, providing an alternative explanation for the restricted success of biological control of alligator weed with A. hygrophila. We investigated the effect of four A. philoxeroides populations with varying cytogenetical characteristics on plant-insect interaction with A. hygrophila in the native range of the weed. The insect's life cycle on each host population was studied. In addition, the genetic relationships among the weed populations was explored using dot blot analysis.Plant population affected insect survival and fecundity, but not life cycle length nor third larval instar mortality, pupal mortality or female proportion. Plant internode diameter was not a restriction for insect pupation. All hexaploid populations of A. philoxeroides, as well as the close related A. aquatica, hybridized with the tetraploid population probe with similar intensity, meaning that this population is a component of their polyploid genome. © 2011 Elsevier Inc. Fil:Sosa, A.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Greizerstein, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10499644_v57_n2_p138_Telesnicki http://hdl.handle.net/20.500.12110/paper_10499644_v57_n2_p138_Telesnicki
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Biological invasion
Cytotype diversity
Host range
Hybridization
Insect fitness
Agasicles hygrophila
Alligator
Alternanthera philoxeroides
Amaranthaceae
Chrysomelidae
Coleoptera
Hexapoda
Hygrophila
spellingShingle Biological invasion
Cytotype diversity
Host range
Hybridization
Insect fitness
Agasicles hygrophila
Alligator
Alternanthera philoxeroides
Amaranthaceae
Chrysomelidae
Coleoptera
Hexapoda
Hygrophila
Sosa, Alejandro Joaquín
Greizerstein, Eduardo José
Cytogenetic effect of Alternanthera philoxeroides (alligator weed) on Agasicles hygrophila (Coleoptera: Chrysomelidae) in its native range
topic_facet Biological invasion
Cytotype diversity
Host range
Hybridization
Insect fitness
Agasicles hygrophila
Alligator
Alternanthera philoxeroides
Amaranthaceae
Chrysomelidae
Coleoptera
Hexapoda
Hygrophila
description Plant genotypic effects can alter insects' ability of utilizing their host plant. Alligator weed, Alternanthera philoxeroides, is a South American amphibious Amaranthaceae, which invades aquatic and terrestrial habitats. Populations with varying morphotypes and cytotypes were identified and further associated with a polyploid hybrids complex in Argentina, which probably is the centre of origin and diversification of alligator weed. The current model of the hybrid complex formation proposes that diploid ancestors gave rise to allotetraploids and allohexaploids.Agasicles hygrophila is a monophagous chrysomelid beetle which successfully controls A. philoxeroides in regions with mild winters and where the weed grows in aquatic habitats. However, plant genetic characteristics could constrain insect development and reproduction, providing an alternative explanation for the restricted success of biological control of alligator weed with A. hygrophila. We investigated the effect of four A. philoxeroides populations with varying cytogenetical characteristics on plant-insect interaction with A. hygrophila in the native range of the weed. The insect's life cycle on each host population was studied. In addition, the genetic relationships among the weed populations was explored using dot blot analysis.Plant population affected insect survival and fecundity, but not life cycle length nor third larval instar mortality, pupal mortality or female proportion. Plant internode diameter was not a restriction for insect pupation. All hexaploid populations of A. philoxeroides, as well as the close related A. aquatica, hybridized with the tetraploid population probe with similar intensity, meaning that this population is a component of their polyploid genome. © 2011 Elsevier Inc.
author Sosa, Alejandro Joaquín
Greizerstein, Eduardo José
author_facet Sosa, Alejandro Joaquín
Greizerstein, Eduardo José
author_sort Sosa, Alejandro Joaquín
title Cytogenetic effect of Alternanthera philoxeroides (alligator weed) on Agasicles hygrophila (Coleoptera: Chrysomelidae) in its native range
title_short Cytogenetic effect of Alternanthera philoxeroides (alligator weed) on Agasicles hygrophila (Coleoptera: Chrysomelidae) in its native range
title_full Cytogenetic effect of Alternanthera philoxeroides (alligator weed) on Agasicles hygrophila (Coleoptera: Chrysomelidae) in its native range
title_fullStr Cytogenetic effect of Alternanthera philoxeroides (alligator weed) on Agasicles hygrophila (Coleoptera: Chrysomelidae) in its native range
title_full_unstemmed Cytogenetic effect of Alternanthera philoxeroides (alligator weed) on Agasicles hygrophila (Coleoptera: Chrysomelidae) in its native range
title_sort cytogenetic effect of alternanthera philoxeroides (alligator weed) on agasicles hygrophila (coleoptera: chrysomelidae) in its native range
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10499644_v57_n2_p138_Telesnicki
http://hdl.handle.net/20.500.12110/paper_10499644_v57_n2_p138_Telesnicki
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AT greizersteineduardojose cytogeneticeffectofalternantheraphiloxeroidesalligatorweedonagasicleshygrophilacoleopterachrysomelidaeinitsnativerange
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