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Silva,Norma Machado da; Fantinel,Carina da Conceição; Valente,Vera Lucia da Silva; Valiati,Vitor Hugo. |
Ecological parameters such as trophic niche overlap and niche breadth were computed from the frequency of all drosophilid species collected in 2001 and 2002, in the urban area of Porto Alegre city, Brazil. Independently of place, drosophilids community composition and components breeding or feeding sites, the highest frequencies of Zaprionus indianus (Gupta, 1970) were obtained during seasons with higher average temperatures, especially during summer. From a total of the 19,146 individuals of Z. indianus sampled, 80% were found in this season. The data of trophic niche breadth suggest a higher opportunism of adult flies in feeding substrate use, but the females are still selective in oviposition substrate choice. For the values of niche overlap, only for... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophilids; Niche overlap; Niche breadth. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000300002 |
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Silva,Alessandra de A. R. da; Martins,Marlúcia B.. |
Drosophila speciosa sp. nov. from: Belém, Pará, Brazil, is described and morphologically compared to a closely related species, D. aguape Val & Marques, 1996. Adult specimens of D. speciosa sp. nov. were collected while visiting T. speciosum Willd. ex Spreng. flowers in EMBRAPA's Theobroma Linnaeus germoplasm collections (113 individuals) in Belém and in Caxiuanã Scientific Station, in Melgaço, Pará, Brazil (four individuals). Emergent were obtained from T. speciosum flowers in both localities being four adults in Caxiuanã and 532 in EMBRAPA. Other eight emergencies were registered from Passiflora edulis Sims flowers in Curuçá, Pará, Brazil. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthophilic flies; Drosophilids; Pollination; Theobroma speciosum. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000300003 |
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