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Identification of Tibicen cicada species by a Principal Components Analysis of their songs Anais da ABC (AABC)
Ohya,Eiji.
Specific identification of three Tibicen cicadas, T. japonicus, T. flammatus and T. bihamatus, by their chirping sounds was carried out using Principal Components Analysis (PCA). High quality recordings of each species were used as the standards. The peak and mean frequencies and the pulse rate were used as the variables. Out of 12 samples recorded in the fields one fell in the vicinity of T. japonicus and all other were positioned near T. bihamatus. Then the cluster analysis of the PCA scores clearly separated each species and allocated the samples in the same way.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cicada; Tibicen; Principal Components Analysis; Sound; Identification.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200038
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Occurrence of Quesada gigas on Schizolobium amazonicum trees in Maranhão and Pará States, Brazil PAB
Zanuncio,José Cola; Pereira,Fabrício Fagundes; Zanuncio,Teresinha Vinha; Martinelli,Nilza Maria; Pinon,Tobias Baruc Moreira; Guimarães,Edylene Marota.
An infestation of Quesada gigas Olivier (Hemiptera: Cicadidae) on "paricá" Schizolobium amazonicum (Huber) Ducken (Fabales: Fabaceae) was reported in the Municipalities of Itinga, Maranhão State and Paragominas, Pará State. Nymphs of this insect on roots and adults and exuvias on trunks of the plant were observed. Exit holes of nymphs in the soil were also observed. The occurrence of Q. gigas on S. amazonicum shows the damage potential of this species and the necessity of developing integrated management programs for species of this group, specially in reforested areas with "paricá".
Tipo: Info:eu-repo/semantics/report Palavras-chave: Cicadidae; Cicada; Reforestation; Soil pest; Paricá.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000900015
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