Morphological Variability of the Cotton Boll Weevil in the Principal Cotton-Growing Region of Argentina
The cotton boll weevil (Anthonomus grandis grandis Boheman) (Coleoptera: Curculionidae) is the main pest of the cotton (Gossypium hirsutum Linnaeus) (Malvaceae) crop in South America. First reported in Argentina in 1993, it rapidly dispersed throughout the main cotton-growing region, severely impact...
| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Wiley
2025
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/24074 https://onlinelibrary.wiley.com/doi/10.1111/eea.70020 https://doi.org/10.1111/eea.70020 |
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| author | Garcia, Carolina Vanesa Tcach, Mauricio Alfredo Simonella, Maria Alejandra Almada, Melina Soledad González, Julio Lanzavecchia, Silvia Beatriz Nussenbaum, Ana Laura |
| author_browse | Almada, Melina Soledad Garcia, Carolina Vanesa González, Julio Lanzavecchia, Silvia Beatriz Nussenbaum, Ana Laura Simonella, Maria Alejandra Tcach, Mauricio Alfredo |
| author_facet | Garcia, Carolina Vanesa Tcach, Mauricio Alfredo Simonella, Maria Alejandra Almada, Melina Soledad González, Julio Lanzavecchia, Silvia Beatriz Nussenbaum, Ana Laura |
| author_sort | Garcia, Carolina Vanesa |
| collection | INTA Digital |
| description | The cotton boll weevil (Anthonomus grandis grandis Boheman) (Coleoptera: Curculionidae) is the main pest of the cotton (Gossypium hirsutum Linnaeus) (Malvaceae) crop in South America. First reported in Argentina in 1993, it rapidly dispersed throughout the main cotton-growing region, severely impacting the crop production. However, little is known about the external morphometry and variability of these populations. The main objective of the present study was to assess morphological variability among five boll weevil populations collected in the main cotton-growing region of Argentina during two seasons (winter and growing seasons) using traditional morphometry. Nine morphological variables were measured in 30 individuals per population. Sexual dimorphism was not detected for any of the variables. Significant differences among populations were found based on location and season of collection. Principal component analysis (PCA) and a dendrogram revealed that winter populations clustered together, showing intermediate morphological values and low variability across the three sampled localities. Populations collected during the growing season grouped into two distinct clusters: one comprising populations from the Chaco province and the other from the remaining locations. One-way ANOVA further supported these patterns, indicating significant differences among Anthonomus grandis grandis populations for “elytra length” and “total body length” variables. The results were discussed in relation to climatic conditions, cotton management practices, and alternative food sources, providing morphological records that could help optimize control strategies. Larger individuals, likely key reproducers, may require early control, whereas smaller ones may reflect suboptimal development due to limited nutritional resources or high intraspecific competition. These traits may also affect the survival of overwintering populations. Overall, these findings contribute to a better understanding of boll weevil population dynamics and their implications for integrated pest management. |
| format | Artículo |
| id | INTA24074 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA240742025-10-06T13:00:18Z Morphological Variability of the Cotton Boll Weevil in the Principal Cotton-Growing Region of Argentina Garcia, Carolina Vanesa Tcach, Mauricio Alfredo Simonella, Maria Alejandra Almada, Melina Soledad González, Julio Lanzavecchia, Silvia Beatriz Nussenbaum, Ana Laura Algodón Plagas de Plantas Gestión de Lucha Integrada Argentina Cotton Plant Pests Curculionidae Gossypium hirsutum Anthonomus grandis Integrated Pest Management Weevils The cotton boll weevil (Anthonomus grandis grandis Boheman) (Coleoptera: Curculionidae) is the main pest of the cotton (Gossypium hirsutum Linnaeus) (Malvaceae) crop in South America. First reported in Argentina in 1993, it rapidly dispersed throughout the main cotton-growing region, severely impacting the crop production. However, little is known about the external morphometry and variability of these populations. The main objective of the present study was to assess morphological variability among five boll weevil populations collected in the main cotton-growing region of Argentina during two seasons (winter and growing seasons) using traditional morphometry. Nine morphological variables were measured in 30 individuals per population. Sexual dimorphism was not detected for any of the variables. Significant differences among populations were found based on location and season of collection. Principal component analysis (PCA) and a dendrogram revealed that winter populations clustered together, showing intermediate morphological values and low variability across the three sampled localities. Populations collected during the growing season grouped into two distinct clusters: one comprising populations from the Chaco province and the other from the remaining locations. One-way ANOVA further supported these patterns, indicating significant differences among Anthonomus grandis grandis populations for “elytra length” and “total body length” variables. The results were discussed in relation to climatic conditions, cotton management practices, and alternative food sources, providing morphological records that could help optimize control strategies. Larger individuals, likely key reproducers, may require early control, whereas smaller ones may reflect suboptimal development due to limited nutritional resources or high intraspecific competition. These traits may also affect the survival of overwintering populations. Overall, these findings contribute to a better understanding of boll weevil population dynamics and their implications for integrated pest management. EEA Sáenz Peña Fil: García, Carolina V. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Sáenz Peña; Argentina Fil: Tcach, Mauricio Alfredo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Sáenz Peña; Argentina Fil: Simonella, Maria Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Sáenz Peña; Argentina Fil: Almada, Melina Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Reconquista; Argentina Fil: Almada, Melina Soledad. Universidad Católica de Santa Fé. Facultad de Ciencias Agropecuarias; Argentina Fil: González, Julio. Universidad Nacional del Chaco Austral; Argentina Fil: Lanzavecchia, Silvia Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Genética; Argentina Fil: Lanzavecchia, Silvia Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina Fil: Lanzavecchia, Silvia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Nussenbaum, Ana Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Genética; Argentina Fil: Nussenbaum, Ana Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina Fil: Nussenbaum, Ana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Nussenbaum, Ana Laura. Universidad del Salvador. Facultad de Ciencias Agronómicas y Veterinarias; Argentina 2025-10-06T12:55:43Z 2025-10-06T12:55:43Z 2025-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/24074 https://onlinelibrary.wiley.com/doi/10.1111/eea.70020 0013-8703 1570-7458 https://doi.org/10.1111/eea.70020 eng info:eu-repograntAgreement/INTA/2023-PD-L01-I087, Caracterización de la diversidad genética de plantas, animales y microorganismos mediante herramientas de genómica aplicada. info:eu-repograntAgreement/INTA/2023-PE-L01-I070, Aportes en el diseño y aplicación de tecnologías para el incremento de la productividad y sostenibilidad de la cadena algodonera info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Wiley Entomologia Experimentalis et Applicata : 1-12 (First published: 1 October 2025) |
| spellingShingle | Algodón Plagas de Plantas Gestión de Lucha Integrada Argentina Cotton Plant Pests Curculionidae Gossypium hirsutum Anthonomus grandis Integrated Pest Management Weevils Garcia, Carolina Vanesa Tcach, Mauricio Alfredo Simonella, Maria Alejandra Almada, Melina Soledad González, Julio Lanzavecchia, Silvia Beatriz Nussenbaum, Ana Laura Morphological Variability of the Cotton Boll Weevil in the Principal Cotton-Growing Region of Argentina |
| title | Morphological Variability of the Cotton Boll Weevil in the Principal Cotton-Growing Region of Argentina |
| title_full | Morphological Variability of the Cotton Boll Weevil in the Principal Cotton-Growing Region of Argentina |
| title_fullStr | Morphological Variability of the Cotton Boll Weevil in the Principal Cotton-Growing Region of Argentina |
| title_full_unstemmed | Morphological Variability of the Cotton Boll Weevil in the Principal Cotton-Growing Region of Argentina |
| title_short | Morphological Variability of the Cotton Boll Weevil in the Principal Cotton-Growing Region of Argentina |
| title_sort | morphological variability of the cotton boll weevil in the principal cotton growing region of argentina |
| topic | Algodón Plagas de Plantas Gestión de Lucha Integrada Argentina Cotton Plant Pests Curculionidae Gossypium hirsutum Anthonomus grandis Integrated Pest Management Weevils |
| url | http://hdl.handle.net/20.500.12123/24074 https://onlinelibrary.wiley.com/doi/10.1111/eea.70020 https://doi.org/10.1111/eea.70020 |
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