Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations

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 com...

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Detalles Bibliográficos
Autores principales: Mariottini, Yanina, Wysiecki, María Laura de, Lange, Carlos Ernesto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Zoología
Fecundity
Grasshopper
Longevity
Melanoplinae
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82219
http://www.scielo.br/pdf/rbent/v55n3/aop2411.pdf
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82219
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Zoología
Fecundity
Grasshopper
Longevity
Melanoplinae
spellingShingle Zoología
Fecundity
Grasshopper
Longevity
Melanoplinae
Mariottini, Yanina
Wysiecki, María Laura de
Lange, Carlos Ernesto
Longevity and fecundity of Dichroplus maculipennis (Orthoptera, Acrididae) at non-outbreaking and outbreaking situations
topic_facet Zoología
Fecundity
Grasshopper
Longevity
Melanoplinae
description 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 (30°C, 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
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 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_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_sort longevity and fecundity of dichroplus maculipennis (orthoptera, acrididae) at non-outbreaking and outbreaking situations
publishDate 2011
url http://sedici.unlp.edu.ar/handle/10915/82219
http://www.scielo.br/pdf/rbent/v55n3/aop2411.pdf
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