Larval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazil
The number of larval instars of Simulium (Hemicnetha) rubrithorax Lutz (Diptera: Nematocera) was determined using the lateral length of the head capsule. In this study 1,035 larvae, of different sizes, were measured (639 from the state of Roraima and 396 from the state of Minas Gerais). A frequency...
| Autor principal: | Alvan-Aguilar, Miriam Adriana |
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| Outros Autores: | Hamada, Neusa |
| Grau: | Artigo |
| Idioma: | English |
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Memórias do Instituto Oswaldo Cruz
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/14535 |
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oai:repositorio:1-14535 |
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oai:repositorio:1-14535 Larval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazil Alvan-Aguilar, Miriam Adriana Hamada, Neusa Water Analysis Biometry Brasil Comparative Study Controlled Study Developmental Stage Egg Fly Frequency Analysis Geographical Variation (species) Gill Growth Head Larva Measurement Nonhuman Population Simulium Simulium Rubrithorax Species Student T Test Water Temperature Animals Female Fly Growth, Development And Aging Histology Larva Male Temperature Diptera Hexapoda Nematocera Simuliidae Simulium Nigricoxum Simulium Rubrithorax Animal Biometry Brasil Female Larva Male Simuliidae Temperature The number of larval instars of Simulium (Hemicnetha) rubrithorax Lutz (Diptera: Nematocera) was determined using the lateral length of the head capsule. In this study 1,035 larvae, of different sizes, were measured (639 from the state of Roraima and 396 from the state of Minas Gerais). A frequency distribution analysis was carried out on the measurements of the lateral length of the head capsule to determine the number of larval instars. The limits of each instar were defined by the lower frequency of the measurements falling in a range of values, by the presence of the "egg burster" that characterizes the first larval instar, and by the developmental stage of the gill histoblast. The determination of the instar number was tested using a Student's t-test (p < 0.05), the Dyar rule and the Crosby growth rule. The results indicate the existence of 7 larval instars for this species, although this result was not in accordance to the Crosby rule. Last-instar larvae from two widely separated geographical populations (Roraima and Minas Gerais), collected in habitats with different water temperature were compared and no differences (p > 0.05) were observed between them. 2020-04-24T16:49:32Z 2020-04-24T16:49:32Z 2003 Artigo https://repositorio.inpa.gov.br/handle/1/14535 10.1590/S0074-02762003000400015 en Volume 98, Número 4, Pags. 507-511 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Memórias do Instituto Oswaldo Cruz |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Water Analysis Biometry Brasil Comparative Study Controlled Study Developmental Stage Egg Fly Frequency Analysis Geographical Variation (species) Gill Growth Head Larva Measurement Nonhuman Population Simulium Simulium Rubrithorax Species Student T Test Water Temperature Animals Female Fly Growth, Development And Aging Histology Larva Male Temperature Diptera Hexapoda Nematocera Simuliidae Simulium Nigricoxum Simulium Rubrithorax Animal Biometry Brasil Female Larva Male Simuliidae Temperature |
| spellingShingle |
Water Analysis Biometry Brasil Comparative Study Controlled Study Developmental Stage Egg Fly Frequency Analysis Geographical Variation (species) Gill Growth Head Larva Measurement Nonhuman Population Simulium Simulium Rubrithorax Species Student T Test Water Temperature Animals Female Fly Growth, Development And Aging Histology Larva Male Temperature Diptera Hexapoda Nematocera Simuliidae Simulium Nigricoxum Simulium Rubrithorax Animal Biometry Brasil Female Larva Male Simuliidae Temperature Alvan-Aguilar, Miriam Adriana Larval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazil |
| topic_facet |
Water Analysis Biometry Brasil Comparative Study Controlled Study Developmental Stage Egg Fly Frequency Analysis Geographical Variation (species) Gill Growth Head Larva Measurement Nonhuman Population Simulium Simulium Rubrithorax Species Student T Test Water Temperature Animals Female Fly Growth, Development And Aging Histology Larva Male Temperature Diptera Hexapoda Nematocera Simuliidae Simulium Nigricoxum Simulium Rubrithorax Animal Biometry Brasil Female Larva Male Simuliidae Temperature |
| description |
The number of larval instars of Simulium (Hemicnetha) rubrithorax Lutz (Diptera: Nematocera) was determined using the lateral length of the head capsule. In this study 1,035 larvae, of different sizes, were measured (639 from the state of Roraima and 396 from the state of Minas Gerais). A frequency distribution analysis was carried out on the measurements of the lateral length of the head capsule to determine the number of larval instars. The limits of each instar were defined by the lower frequency of the measurements falling in a range of values, by the presence of the "egg burster" that characterizes the first larval instar, and by the developmental stage of the gill histoblast. The determination of the instar number was tested using a Student's t-test (p < 0.05), the Dyar rule and the Crosby growth rule. The results indicate the existence of 7 larval instars for this species, although this result was not in accordance to the Crosby rule. Last-instar larvae from two widely separated geographical populations (Roraima and Minas Gerais), collected in habitats with different water temperature were compared and no differences (p > 0.05) were observed between them. |
| format |
Artigo |
| author |
Alvan-Aguilar, Miriam Adriana |
| author2 |
Hamada, Neusa |
| author2Str |
Hamada, Neusa |
| title |
Larval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazil |
| title_short |
Larval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazil |
| title_full |
Larval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazil |
| title_fullStr |
Larval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazil |
| title_full_unstemmed |
Larval Biometry of Simulium rubrithorax (Diptera: Simuliidae) and Size Comparison between Populations in the States of Minas Gerais and Roraima, Brazil |
| title_sort |
larval biometry of simulium rubrithorax (diptera: simuliidae) and size comparison between populations in the states of minas gerais and roraima, brazil |
| publisher |
Memórias do Instituto Oswaldo Cruz |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/14535 |
| _version_ |
1787141757649027072 |
| score |
11.755432 |