Geometric morphometric differences between Panstrongylus geniculatus from field and laboratory
The finding of Panstrongylus geniculatus nymphs inside a house in northeastern Antioquia, Colombia, and the reports related to their increasing presence in homes suggest the need for surveillance methods for monitoring the invasion processes. We analyzed the morphological differences between a wild...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Fundação Oswaldo Cruz (FIOCRUZ)
2002-07-01
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| Series: | Memorias do Instituto Oswaldo Cruz |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762002000500015 |
| _version_ | 1797718205093904384 |
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| author | Nicolás Jaramillo O Diana Castillo Marta Wolff E |
| author_facet | Nicolás Jaramillo O Diana Castillo Marta Wolff E |
| author_sort | Nicolás Jaramillo O |
| collection | DOAJ |
| description | The finding of Panstrongylus geniculatus nymphs inside a house in northeastern Antioquia, Colombia, and the reports related to their increasing presence in homes suggest the need for surveillance methods for monitoring the invasion processes. We analyzed the morphological differences between a wild population and its laboratory descendants, using the techniques of geometric morphometry, with the idea that such differences might parallel those between sylvatic and synanthropic populations. The analyses over five generations showed differences in size but not in shape. Head size and wing size were both reduced from sylvatic to laboratory populations, but the decrease in head size occurred only up to the second generation while the decrease in wing size proceeded up to the fifth generation. In contrast, although a decrease in sexual size dimorphism has been proposed as a marker of colonization in human dwellings, we did not detect any significant loss of dimorphism between sexes of P. geniculatus over the five generations studied. We conclude that size changes may have a physiological origin in response to a change of ecotopes, but more than five generations may be required for the expression of permanent morphological markers of human dwellings colonization. |
| first_indexed | 2024-03-12T08:47:33Z |
| format | Article |
| id | doaj.art-2ca99d87389f4ebc838d03217ed5a66f |
| institution | Directory Open Access Journal |
| issn | 0074-0276 1678-8060 |
| language | English |
| last_indexed | 2024-03-12T08:47:33Z |
| publishDate | 2002-07-01 |
| publisher | Fundação Oswaldo Cruz (FIOCRUZ) |
| record_format | Article |
| series | Memorias do Instituto Oswaldo Cruz |
| spelling | doaj.art-2ca99d87389f4ebc838d03217ed5a66f2023-09-02T16:25:08ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz0074-02761678-80602002-07-0197566767310.1590/S0074-02762002000500015Geometric morphometric differences between Panstrongylus geniculatus from field and laboratoryNicolás Jaramillo ODiana CastilloMarta Wolff EThe finding of Panstrongylus geniculatus nymphs inside a house in northeastern Antioquia, Colombia, and the reports related to their increasing presence in homes suggest the need for surveillance methods for monitoring the invasion processes. We analyzed the morphological differences between a wild population and its laboratory descendants, using the techniques of geometric morphometry, with the idea that such differences might parallel those between sylvatic and synanthropic populations. The analyses over five generations showed differences in size but not in shape. Head size and wing size were both reduced from sylvatic to laboratory populations, but the decrease in head size occurred only up to the second generation while the decrease in wing size proceeded up to the fifth generation. In contrast, although a decrease in sexual size dimorphism has been proposed as a marker of colonization in human dwellings, we did not detect any significant loss of dimorphism between sexes of P. geniculatus over the five generations studied. We conclude that size changes may have a physiological origin in response to a change of ecotopes, but more than five generations may be required for the expression of permanent morphological markers of human dwellings colonization.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762002000500015geometrical morphometryisometric sizeshapeTriatominaePanstrongylus geniculatusChagas disease |
| spellingShingle | Nicolás Jaramillo O Diana Castillo Marta Wolff E Geometric morphometric differences between Panstrongylus geniculatus from field and laboratory Memorias do Instituto Oswaldo Cruz geometrical morphometry isometric size shape Triatominae Panstrongylus geniculatus Chagas disease |
| title | Geometric morphometric differences between Panstrongylus geniculatus from field and laboratory |
| title_full | Geometric morphometric differences between Panstrongylus geniculatus from field and laboratory |
| title_fullStr | Geometric morphometric differences between Panstrongylus geniculatus from field and laboratory |
| title_full_unstemmed | Geometric morphometric differences between Panstrongylus geniculatus from field and laboratory |
| title_short | Geometric morphometric differences between Panstrongylus geniculatus from field and laboratory |
| title_sort | geometric morphometric differences between panstrongylus geniculatus from field and laboratory |
| topic | geometrical morphometry isometric size shape Triatominae Panstrongylus geniculatus Chagas disease |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762002000500015 |
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