Posternbryonie Development and Food Consumption of Dichroplus elongatus Giglio-Tos and Dichroplus maculipennis (Blanchard) (Orhtoptera: Acrididae: Melanoplinae) under Laboratory Conditions
Dichroplus maculipennis (Blanchard] and D. elongatus Giglio-Tos are two of the most important melanoplines in Argentina, both ecologically and economically. The postembryonic development and forage loss (consumption of Bromus brevis Ness + fallen material) caused by older nymphs (instars IV, V, VI)...
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2011
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/82218 http://www.scielo.br/pdf/ne/v40n2/06.pdf |
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I19-R120-10915-82218 |
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dspace |
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Universidad Nacional de La Plata |
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I-19 |
| repository_str |
R-120 |
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SEDICI (UNLP) |
| language |
Inglés |
| topic |
Zoología Grasshopper Nymphal development Loss of forage |
| spellingShingle |
Zoología Grasshopper Nymphal development Loss of forage Mariottini, Yanina Wysiecki, María Laura de Lange, Carlos Ernesto Posternbryonie Development and Food Consumption of Dichroplus elongatus Giglio-Tos and Dichroplus maculipennis (Blanchard) (Orhtoptera: Acrididae: Melanoplinae) under Laboratory Conditions |
| topic_facet |
Zoología Grasshopper Nymphal development Loss of forage |
| description |
Dichroplus maculipennis (Blanchard] and D. elongatus Giglio-Tos are two of the most important melanoplines in Argentina, both ecologically and economically. The postembryonic development and forage loss (consumption of Bromus brevis Ness + fallen material) caused by older nymphs (instars IV, V, VI) and adults of both species were studied under controlled conditions (30sC, 14L:10D, 40% RH).
Five nymphal instars were recorded in D. elongatus, and six in D.
maculipennis. Total nymphal development was similar in both species (£>. elongatus-. 32 ± 0.70 days; D. maculipennis-. 34.5 ± 0.37 days). Daily consumption increased from nymphal instars to pre-reproductive adult stage. In both species, pre-reproductive females had higher consumption rates than other stages considered (D. elongatus-. 30.6 ± 0.56 mg dry weight/day; D. maculipennis-. 48.7 ± 0.74 mg dry weight/ day). In the reproductive stage, consumption decreased significantly in both sexes. When feeding, D. maculipennis let some plant material to drop, increasing total loss. The percentage of fallen material was greater in reproductive adults, representing 3.9% and 2.9% of the total daily loss for males and females, respectively. Females and males of D. maculipennis were heavier than those of D. elongatus (P < 0.05), and daily consumption was significantly higher (P < 0.05).
Regardless sex and reproductive status, adults of D. maculipennis consumed 29.1 ± 0.64 mg dry weight/day on average, while one of D. elongatus 20.0 ± 0.3 mg dry weight/ day. |
| format |
Articulo Articulo |
| author |
Mariottini, Yanina Wysiecki, María Laura de Lange, Carlos Ernesto |
| author_facet |
Mariottini, Yanina Wysiecki, María Laura de Lange, Carlos Ernesto |
| author_sort |
Mariottini, Yanina |
| title |
Posternbryonie Development and Food Consumption of Dichroplus elongatus
Giglio-Tos and Dichroplus maculipennis (Blanchard) (Orhtoptera: Acrididae:
Melanoplinae) under Laboratory Conditions |
| title_short |
Posternbryonie Development and Food Consumption of Dichroplus elongatus
Giglio-Tos and Dichroplus maculipennis (Blanchard) (Orhtoptera: Acrididae:
Melanoplinae) under Laboratory Conditions |
| title_full |
Posternbryonie Development and Food Consumption of Dichroplus elongatus
Giglio-Tos and Dichroplus maculipennis (Blanchard) (Orhtoptera: Acrididae:
Melanoplinae) under Laboratory Conditions |
| title_fullStr |
Posternbryonie Development and Food Consumption of Dichroplus elongatus
Giglio-Tos and Dichroplus maculipennis (Blanchard) (Orhtoptera: Acrididae:
Melanoplinae) under Laboratory Conditions |
| title_full_unstemmed |
Posternbryonie Development and Food Consumption of Dichroplus elongatus
Giglio-Tos and Dichroplus maculipennis (Blanchard) (Orhtoptera: Acrididae:
Melanoplinae) under Laboratory Conditions |
| title_sort |
posternbryonie development and food consumption of dichroplus elongatus
giglio-tos and dichroplus maculipennis (blanchard) (orhtoptera: acrididae:
melanoplinae) under laboratory conditions |
| publishDate |
2011 |
| url |
http://sedici.unlp.edu.ar/handle/10915/82218 http://www.scielo.br/pdf/ne/v40n2/06.pdf |
| work_keys_str_mv |
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Repositorios |
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