Biology and life table of Dirphia araucariae (Lepidoptera: Saturniidae): A herbivore of potentially high impact on Araucaria angustifolia
The life-history and biology of Dirphia araucariae Jones, 1908, including its life fertility table, are here described. Moths were reared in the laboratory under controlled conditions on their host plant, Araucaria angustifolia (Bertoloni) O. Kuntze - Araucariaceae. We describe several life-history...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Zoologia
2013-04-01
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| Series: | Zoologia (Curitiba) |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200004 |
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| author | Mauricio M. Zenker Alexandre Specht Edegar Fronza Graziela Poletto Fernanda Marcon Aline C. Formentini Mateus Gedoz |
| author_facet | Mauricio M. Zenker Alexandre Specht Edegar Fronza Graziela Poletto Fernanda Marcon Aline C. Formentini Mateus Gedoz |
| author_sort | Mauricio M. Zenker |
| collection | DOAJ |
| description | The life-history and biology of Dirphia araucariae Jones, 1908, including its life fertility table, are here described. Moths were reared in the laboratory under controlled conditions on their host plant, Araucaria angustifolia (Bertoloni) O. Kuntze - Araucariaceae. We describe several life-history traits of the species, namely: developmental period, survival rate, growth rate, fertility, fecundity, sex ratio, cephalic capsule width, and pupal weight. Mean duration of life stages were: egg = 26.78 days; larva = 61.78 days; prepupa = 6.85 days; pupa = 62.46 days; adult = 8.37 days. We found statistically significant differences between sexes for adult, larval and pupal stage duration; larval stage was longer in females while pupal stage was longer in males. The survival rate of each life stage was: egg = 96.18%; larva = 95.38%; prepupa = 83.87%; pupa = 100%. The larvae developed through six instars and the mean growth rate was 1.418. The width of male and female cephalic capsules were different in last three instars, even though the total mean width between sexes was not different. Pupal mean weight ranged from 2.40 g to 4.79 g, with females being heavier than males. Fertility ranged from 66.78% to 100%, and the total fecundity was 358.45 eggs/female, including both laid eggs and eggs held in the abdomen. The sex ratio was 0.50 ± 0.05. The estimated biotic potential was 48731.08 specimens/female/year. We found the following values for the fertility life table: (Ro) = 117.21 females; (T) = 162.75 days; (r m) = 0.21; (l) = 1.23. Considering the biological parameters evaluated in this study, we conclude that D. araucariae is not able to cause primary damage in A. angustifolia forests, although further studies are needed to understand the reasons for occasional population outbreaks. |
| first_indexed | 2024-04-11T01:59:09Z |
| format | Article |
| id | doaj.art-0278688960cd42059906839904295d31 |
| institution | Directory Open Access Journal |
| issn | 1984-4670 1984-4689 |
| language | English |
| last_indexed | 2024-04-11T01:59:09Z |
| publishDate | 2013-04-01 |
| publisher | Sociedade Brasileira de Zoologia |
| record_format | Article |
| series | Zoologia (Curitiba) |
| spelling | doaj.art-0278688960cd42059906839904295d312023-01-03T04:19:57ZengSociedade Brasileira de ZoologiaZoologia (Curitiba)1984-46701984-46892013-04-01302143150Biology and life table of Dirphia araucariae (Lepidoptera: Saturniidae): A herbivore of potentially high impact on Araucaria angustifoliaMauricio M. ZenkerAlexandre SpechtEdegar FronzaGraziela PolettoFernanda MarconAline C. FormentiniMateus GedozThe life-history and biology of Dirphia araucariae Jones, 1908, including its life fertility table, are here described. Moths were reared in the laboratory under controlled conditions on their host plant, Araucaria angustifolia (Bertoloni) O. Kuntze - Araucariaceae. We describe several life-history traits of the species, namely: developmental period, survival rate, growth rate, fertility, fecundity, sex ratio, cephalic capsule width, and pupal weight. Mean duration of life stages were: egg = 26.78 days; larva = 61.78 days; prepupa = 6.85 days; pupa = 62.46 days; adult = 8.37 days. We found statistically significant differences between sexes for adult, larval and pupal stage duration; larval stage was longer in females while pupal stage was longer in males. The survival rate of each life stage was: egg = 96.18%; larva = 95.38%; prepupa = 83.87%; pupa = 100%. The larvae developed through six instars and the mean growth rate was 1.418. The width of male and female cephalic capsules were different in last three instars, even though the total mean width between sexes was not different. Pupal mean weight ranged from 2.40 g to 4.79 g, with females being heavier than males. Fertility ranged from 66.78% to 100%, and the total fecundity was 358.45 eggs/female, including both laid eggs and eggs held in the abdomen. The sex ratio was 0.50 ± 0.05. The estimated biotic potential was 48731.08 specimens/female/year. We found the following values for the fertility life table: (Ro) = 117.21 females; (T) = 162.75 days; (r m) = 0.21; (l) = 1.23. Considering the biological parameters evaluated in this study, we conclude that D. araucariae is not able to cause primary damage in A. angustifolia forests, although further studies are needed to understand the reasons for occasional population outbreaks.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200004Atlantic Forestconservation biologydevelopmental biologyforest entomologyPinheiro-do-ParanáSouth America |
| spellingShingle | Mauricio M. Zenker Alexandre Specht Edegar Fronza Graziela Poletto Fernanda Marcon Aline C. Formentini Mateus Gedoz Biology and life table of Dirphia araucariae (Lepidoptera: Saturniidae): A herbivore of potentially high impact on Araucaria angustifolia Zoologia (Curitiba) Atlantic Forest conservation biology developmental biology forest entomology Pinheiro-do-Paraná South America |
| title | Biology and life table of Dirphia araucariae (Lepidoptera: Saturniidae): A herbivore of potentially high impact on Araucaria angustifolia |
| title_full | Biology and life table of Dirphia araucariae (Lepidoptera: Saturniidae): A herbivore of potentially high impact on Araucaria angustifolia |
| title_fullStr | Biology and life table of Dirphia araucariae (Lepidoptera: Saturniidae): A herbivore of potentially high impact on Araucaria angustifolia |
| title_full_unstemmed | Biology and life table of Dirphia araucariae (Lepidoptera: Saturniidae): A herbivore of potentially high impact on Araucaria angustifolia |
| title_short | Biology and life table of Dirphia araucariae (Lepidoptera: Saturniidae): A herbivore of potentially high impact on Araucaria angustifolia |
| title_sort | biology and life table of dirphia araucariae lepidoptera saturniidae a herbivore of potentially high impact on araucaria angustifolia |
| topic | Atlantic Forest conservation biology developmental biology forest entomology Pinheiro-do-Paraná South America |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200004 |
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