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| Schaefer,Carl W.. |
| A aplicação do trabalho em sistemática e filogenética pode ter muitos efeitos práticos na entomologia aplicada. A filogenia é o estudo das relações evolucionárias dos organismos; a sistemática usa os resultados da filogenia para contrair sistemas de classificação. Se alguém sabe algo sobre as relações filogenéticas e sistemáticas de uma praga de uma cultura, então ele sabe os parentes da praga ou cultura, e pode predizer o que poderão fazer no futuro. Tal conhecimento e predições são especialmente importantes em países em desenvolvimento, os quais estão diversificando sua agricultura. Insetos que se alimentam de plantas selvagens podem se tornar pragas quando os parentes destas plantas são introduzidas como culturas. Similarmente, nesses países, parentes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Hemíperos; Taxonomia; Entomologia aplicada. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000400001 |
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| Schaefer,Carl W.. |
| Why are the subfamily relationships of Triatominae (Hemiptera: Reduviidae) important?-This question is really two: Is Triatominae a phylogenetically valid monophyletic subfamily; and, if it is, to what other reduviid subfamilies is it most closely related? If the answer to the first question is Yes, then what one knows about one member of Triatominae may be true for other members; if the answer is No, then no such prediction can be made. Because many members of Triatominae are of medical importance, such predictions are vitally (literally) important. For the same reason, knowledge of the subfamily relatives of medically important triatomines is important: For here too predictions about one related member can be based on knowledge of others. These points... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harpactocorinae; Linshcosteus; Phylogeny; Peiratinae; Reduviinae. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0328-03812005000100002 |
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| Schaefer,Carl W.; Ahmad,Imtiaz. |
| We recognize two species in Neomegalotomus, N. parvus (Westwood), the type species; and N. rufipes (Westwood). The two species are redescribed from type specimens, and are keyed. We synonymize the following species with Neomegalotomus parvus: N. simplex (Westwood), N. latifascia (Berg), and N. pallescens (Stål) (all new synonymies). We synonymize N. jamaicensis (Westwood) with N. rufipes (new synonymy). The type specimens of all species hitherto placed in the genus are also redescribed, except those of N. debilis (Walker) and N. vicinus (Westwood). N. parvus occurs from México through Central America into northern Argentina and east into Venezuela and adjacent Caribbean islands. N. rufipes is widespread in the Caribbean south towards Venezuela. The two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heteroptera; Soy pest; Neotropics; Caribbean. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000100005 |
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| Schaefer,Carl W.. |
| The Neotropical Chagas' disease vectors are classified as members of the reduviid subfamily Triatominae. However, this classification has been suggested to be incorrect, and the suggestion has been treated as fact by some authors; the suggestion is that some (all?) groups in Triatominae had different nontriatomine reduviid ancestors. In this article I raise this question explicitly and ask other questions ancillary to it. I do not answer these questions. Of particular interest is the systematic position of Linshcosteus, the only genus of Triatominae all of whose species occur outside the New World (in India). Related to this question is that of the origin(s) of the several species and populations probably derived from the tropicopolitan Triatoma... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Chagas' disease; Trypanosoma cruzi; Rhodnius; Linshcosteus; Cladistics. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000100001 |
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| Schaefer,Carl W.; Panizzi,Antônio R.; Coscarón,Maria C.. |
| During March 2000, nymphs and adults of the cyrtocorid bugs Cyrtocoris egeris Packauskas & Schaefer and C. trigonus (Germar) were observed on two different plants at two different localities. In Brazil (Londrina, Paraná State) adult C. trigonus were found feeding on stems of the weed plant arrow leaf sida, Sida rhombifolia L. (Malvaceae). Despite egg deposition in the laboratory, nymphs did not develop on this plant. In Argentina (Reconquista, Santa Fé Province), nymphs and adults of C. egeris were observed feeding on immature soybean [Glycine max (L.) Merrill] pods. Under laboratory conditions, nymphs of neither species could be reared beyond the third instar. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heteroptera; Sida rhombifolia; Glycine max; Soybean; Ecdysis; Geographical distribution. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000100018 |
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| Registros recuperados: 10 | |
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