Potential of Host-Switching in
Nezara viridula
(Hemiptera: Pentatomidae) To Enhance Survival and Reproduction

Velasco, Luis Rey I.; Walter, Gimme H.

doi:10.1093/ee/22.2.326

Cited by 44 publications

(36 citation statements)

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“…Pode indicar que há necessidade de complementação nutricional (incluindo diferentes espécies de plantas), embora a baixa mortalidade das ninfas do 2 o ao 5 o instar sugira que o alimento utilizado seja adequado. Velasco & Walter (1993) estabeleceram que uma sobrevivência maior que 60% no período ninfal indicaria uma alimentação adequada para Nezara viridula. A constatação de que o período de pré-oviposição de C. pengue foi mais curto que em outras espécies do gênero e de que todos os ovos da primeira postura de oito das 14 fêmeas foram inférteis sugere que essas fêmeas tenham Tabela III.…”

Section: Discussionunclassified

Descrição dos estágios imaturos e biologia de Chinavia pengue (Rolston) (Hemiptera, Pentatomidae)

Matesco¹,

Schwertner²,

Grazia³

2007

Rev. Bras. entomol.

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Section: Discussionunclassified

Descrição dos estágios imaturos e biologia de Chinavia pengue (Rolston) (Hemiptera, Pentatomidae)

Matesco¹,

Schwertner²,

Grazia³

2007

Rev. Bras. entomol.

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“…Dari kurva juga dapat dilihat bahwa peneluran terjadi setelah hari ke 26 atau 3 hari setelah D. indica menjadi imago. Velasco & Walter (1993) Price (1997) suatu populasi akan bertambah jika memiliki nilai Ro > 1 dan stabil jika Ro = 1. Tingginya angka pertumbuhan serangga apabila berada pada kondisi lingkungan yang optimum dapat menyebabkan serangga tersebut dapat berkembang dengan cepat menjadi hama yang menyebabkan kerugian secara ekonomi, seperti kehilangan hasil dan kematian tanaman.…”

Section: Gambar 5 Pupa Diaphania Indica Jantan (A) Dan Betina (B)unclassified

Statistik Demografi Diaphania Indica Saunders (Lepidoptera: Crambidae)

Fitriana¹,

Buchori²,

Nurmansyah³

et al. 2016

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

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Demographic statistic of Diaphania indica Saunders (Lepidoptera: Crambidae). Diaphania indica is a pest of Cucumis sativus L. The information about the biology of D. indica is needed to determine appropriate pest management strategies. The aim of this study was to study the biology and life cycle of D. indica. The study was conducted by observing life stage development of D. indica, such as life cycle, head width and body length. The life table was determined by calculating mortality of D. indica individuals and fecundity at each age. Mortality and fecundity data of D. indica were then used to calculate the parameters of population growth including gross reproduction rate (GRR), net reproductive rate (Ro), mean generation time (T) and and intrinsic rate of increase (r ). The results show that the life cycle of D. indica is about 25.7 days, while egg stadium = 3.2 days, larval stadium = 13.5 days, pupal stadium = 7.9 days, imago stadium = 8.6 days, and preoviposition period = 3.9 days. GRR of D. indica is 263 individuals per generation. Ro = 51 individuals per female per generation. T is 31.3 days and the innate capacity for increase (r) = 0.1 individual per female per day. PENDAHULUANPengetahuan mengenai aspek-aspek demografi merupakan salah satu langkah awal dalam mempelajari perkembangan suatu populasi serangga. Demografi adalah analisis kuantitatif karakteristik suatu populasi, terutama hubungannya dengan pola pertumbuhan populasi, hubungan ketahanan, dan pergerakan populasi. Hal ini sangat erat hubungannya dengan dinamika populasi namun penekanannya agak berbeda, demografi lebih memusatkan pada pola perkembangan, kelahiran, kematian, dan pergerakan, sementara itu sebab dan akibat dari fenomena ini dipelajari dalam dinamika populasi. Aspek demografi suatu populasi terdapat dalam neraca kehidupan. Neraca kehidupan merupakan teknik menghitung angka kelahiran dan kematian suatu populasi. Neraca tersebut adalah ringkasan pernyataan tentang kehidupan individu populasi atau kelompok. Dari

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“…Although all phytophagous pentatomids are considered potentially polyphagous, they show different performances on different food resources, even among hosts of the same plant family (Panizzi 1997). Some authors emphasize that food suitability can affect the nymphal and adult stages differently (Panizzi & Slansky 1991, Velasco & Walter 1993. In general, Chinavia species show preference for legumes (Fabaceae) (Panizzi 1997), but none of the few-recorded hosts of C. longicorialis belong to this group of plants.…”

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confidence: 99%

Morphology of the immatures and biology of Chinavia longicorialis (Breddin) (Hemiptera: Pentatomidae)

Matesco¹,

Schwertner²,

Grazia³

2009

Neotrop. entomol.

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074-082 (2009) Morfologia dos Estágios Imaturos e Biologia de Chinavia longicorialis (Breddin) (Hemiptera: Pentatomidae) RESUMO -Chinavia longicorialis (Breddin) é encontrada apenas no Brasil, Argentina e Uruguai, sobre plantas hospedeiras de pelo menos três famílias diferentes. Adultos e ninfas dessa espécie foram coletados no Parque Estadual do Espinilho (Barra do Quaraí, RS) e na região da Serra do Sudeste (Canguçu e Caçapava do Sul, RS) e mantidos sob condições controladas (24 ± 1°C; UR 70 ± 10%; 12hL:12hE), alimentados com vagens verdes de feijão (Phaseolus vulgaris L.). Os ovos e as ninfas de primeiro ínstar de C. longicorialis são muito semelhantes àqueles das demais espécies de Chinavia; porém apresentando manchas alaranjadas na margem lateral dos segmentos torácicos. As manchas abdominais, a partir do terceiro ínstar, são nitidamente divididas pelas pseudo-suturas do abdome, o que constitui caráter diagnóstico para C. longicorialis. Ninfas do terceiro ao quinto ínstar apresentaram formas claras e escuras. Não foi observada sobreposição nas medidas de largura da cabeça entre diferentes estádios. O número de ovos por postura mais freqüente foi 14; sugere-se a adoção da moda como melhor estimativa para o tamanho das posturas em Pentatomidae. A duração média da fase imatura (ovo a adulto) foi de 39,4 ± 3,20 dias. A alta mortalidade do segundo ao quinto ínstar (82,4%) e a ausência de desempenho reprodutivo nos adultos da segunda geração de laboratório indicam que vagens de feijão constituem alimento inadequado para a sobrevivência e reprodução de C. longicorialis. PALAVRAS-CHAVE:Percevejo-verde, ovo, ninfa, mortalidade, tempo de desenvolvimento ABSTRACT -Chinavia longicorialis (Breddin) is recorded only in Brazil, Argentina and Uruguay on host plants of at least three different families. Adults and nymphs were reared under standard controlled conditions (24 ± 1°C; 70 ± 10% RH; 12hL:12hD), and fed on green beans (Phaseolus vulgaris L.). Eggs and fi rst instars of C. longicorialis are very similar to those of other species of Chinavia; however, the presence of orange maculae at the thoracic pleura is exclusive of fi rst instars of C. longicorialis. Third to fi fth instars have abdominal maculae divided by pseudo-sutures, a diagnostic feature of C. longicorialis nymphs. Light and dark morphs were observed for third, fourth and fi fth instars. Head width measurements did not overlap between consecutive instars. The most frequent size of an egg clutch was 14; we suggest the adoption of the mode as the best and useful estimate of the egg clutch size for Pentatomidae. Average duration of the immature stages (egg to adult) was 39.4 ± 3.20 days. The high mortality observed from second to fi fth instar (82.4%) and the lack of reproduction of the second generation indicate that green beans are unsuitable to proper development and reproduction of C. longicorialis by itself.

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Potential of Host-Switching in Nezara viridula (Hemiptera: Pentatomidae) To Enhance Survival and Reproduction

Cited by 44 publications

References 0 publications

Descrição dos estágios imaturos e biologia de Chinavia pengue (Rolston) (Hemiptera, Pentatomidae)

Descrição dos estágios imaturos e biologia de Chinavia pengue (Rolston) (Hemiptera, Pentatomidae)

Statistik Demografi Diaphania Indica Saunders (Lepidoptera: Crambidae)

Morphology of the immatures and biology of Chinavia longicorialis (Breddin) (Hemiptera: Pentatomidae)

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