Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations
Dichroplus maculipennis is one of the most characteristic and damaging grasshopper species of Argentina, mainly in areas of the Pampas and Patagonia regions. We estimated and compared the longevity and fecundity of adult female D. maculipennis under controlled conditions (30ºC, 14L:10D, 40% RH) from...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Entomologia
2011-09-01
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| Series: | Revista Brasileira de Entomologia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300019&lng=en&tlng=en |
| _version_ | 1819277130726375424 |
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| author | Yanina Mariottini María Laura De Wysiecki Carlos Ernesto Lange |
| author_facet | Yanina Mariottini María Laura De Wysiecki Carlos Ernesto Lange |
| author_sort | Yanina Mariottini |
| collection | DOAJ |
| description | Dichroplus maculipennis is one of the most characteristic and damaging grasshopper species of Argentina, mainly in areas of the Pampas and Patagonia regions. We estimated and compared the longevity and fecundity of adult female D. maculipennis under controlled conditions (30ºC, 14L:10D, 40% RH) from individuals collected as last instar nymphs (VI) in the field and with a known recent history of low and high density conditions. Densities of D. maculipennis at the collecting sites were 0.95 individuals per m² in 2006 and 46 ind/m² in 2009, representing non-outbreaking and outbreaking situations, respectively. Adult female longevity in 2006 (67.96 ± 3.2 days) was significantly higher (p < 0.05) than in 2009 (37.44 ± 1.98 days). The number of egg-pods per female was 3.32 ± 0.44 for 2006 and 1.62 ± 0.26 for 2009. The average fecundity in 2006 (89.29 ± 11.9 eggs/female) was significantly greater (p < 0.05) than that in 2009 (36.27 ± 5.82 eggs/female). While it was observed that the oviposition rate was higher in 2006, this difference was not significant (p > 0.05). The fecundity curves showed that the highest values were at weeks 11 and 13 for the 2006 females, and at week 6 for those of 2009. Since the daily oviposition rate at low and high densities was not significantly different, the diminished fecundity rate at high density is attributable to their reduced longevity. |
| first_indexed | 2024-12-23T23:51:13Z |
| format | Article |
| id | doaj.art-2350655ea70d4a388b7333fb5fc0f9ec |
| institution | Directory Open Access Journal |
| issn | 1806-9665 |
| language | English |
| last_indexed | 2024-12-23T23:51:13Z |
| publishDate | 2011-09-01 |
| publisher | Sociedade Brasileira de Entomologia |
| record_format | Article |
| series | Revista Brasileira de Entomologia |
| spelling | doaj.art-2350655ea70d4a388b7333fb5fc0f9ec2022-12-21T17:25:23ZengSociedade Brasileira de EntomologiaRevista Brasileira de Entomologia1806-96652011-09-0155343543810.1590/S0085-56262011000300019S0085-56262011000300019Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situationsYanina Mariottini0María Laura De Wysiecki1Carlos Ernesto Lange2Universidad Nacional de Mar del PlataUniversidad Nacional de Mar del PlataUniversidad Nacional de Mar del PlataDichroplus maculipennis is one of the most characteristic and damaging grasshopper species of Argentina, mainly in areas of the Pampas and Patagonia regions. We estimated and compared the longevity and fecundity of adult female D. maculipennis under controlled conditions (30ºC, 14L:10D, 40% RH) from individuals collected as last instar nymphs (VI) in the field and with a known recent history of low and high density conditions. Densities of D. maculipennis at the collecting sites were 0.95 individuals per m² in 2006 and 46 ind/m² in 2009, representing non-outbreaking and outbreaking situations, respectively. Adult female longevity in 2006 (67.96 ± 3.2 days) was significantly higher (p < 0.05) than in 2009 (37.44 ± 1.98 days). The number of egg-pods per female was 3.32 ± 0.44 for 2006 and 1.62 ± 0.26 for 2009. The average fecundity in 2006 (89.29 ± 11.9 eggs/female) was significantly greater (p < 0.05) than that in 2009 (36.27 ± 5.82 eggs/female). While it was observed that the oviposition rate was higher in 2006, this difference was not significant (p > 0.05). The fecundity curves showed that the highest values were at weeks 11 and 13 for the 2006 females, and at week 6 for those of 2009. Since the daily oviposition rate at low and high densities was not significantly different, the diminished fecundity rate at high density is attributable to their reduced longevity.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300019&lng=en&tlng=enFecundidadegafanhotolongevidadeMelanoplinae |
| spellingShingle | Yanina Mariottini María Laura De Wysiecki Carlos Ernesto Lange Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations Revista Brasileira de Entomologia Fecundidade gafanhoto longevidade Melanoplinae |
| title | Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations |
| title_full | Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations |
| title_fullStr | Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations |
| title_full_unstemmed | Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations |
| title_short | Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations |
| title_sort | longevity and fecundity of dichroplus maculipennis orthoptera acrididae at non outbreaking and outbreaking situations |
| topic | Fecundidade gafanhoto longevidade Melanoplinae |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300019&lng=en&tlng=en |
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