title: Co-Infestation and Spatial Distribution of Bactrocera carambolae and Anastrepha spp. (Diptera: Tephritidae) in Common Guava in the Eastern Amazon.
abstract: Field infestation and spatial distribution of introduced Bactrocera carambolae Drew and Hancock and native species of Anastrepha in common guavas [Psidium guajava (L.)] were investigated in the eastern Amazon. Fruit sampling was carried out in the municipalities of Calçoene and Oiapoque in the state of Amapá, Brazil. The frequency distribution of larvae in fruit was fitted to the negative binomial distribution. Anastrepha striata was more abundant in both sampled areas in comparison to Anastrepha fraterculus (Wiedemann) and B. carambolae The frequency distribution analysis of adults revealed an aggregated pattern for B. carambolae as well as for A. fraterculus and Anastrepha striata Schiner, described by the negative binomial distribution. Although the populations of Anastrepha spp. may have suffered some impact due to the presence of B. carambolae, the results are still not robust enough to indicate effective reduction in the abundance of Anastrepha spp. caused by B. carambolae in a general sense. The high degree of aggregation observed for both species suggests interspecific co-occurrence with the simultaneous presence of both species in the analysed fruit. Moreover, a significant fraction of uninfested guavas also indicated absence of competitive displacement.
authors.affiliation: Universidade Federal do Amapá, Programa de Pós-Graduação em Biodiversidade Tropical, Rodovia JK, Km 4, Macapá, Amapá 68902-280, Brazil.
authors.forename: E G
authors.initials: EG
authors.lastname: Deus
authors.affiliation: Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz. Av. Pádua Dias, Piracicaba, São Paulo 13418-900, Brazil.
authors.forename: W A C
authors.initials: WA
authors.lastname: Godoy
authors.affiliation: Universidade Federal do Amapá, Programa de Pós-Graduação em Desenvolvimento Regional, Rodovia JK, Km 4, Macapá, Amapá 68902-280, Brazil.
authors.forename: M S M
authors.initials: MS
authors.lastname: Sousa
authors.affiliation: Universidade Federal do Piauí, Rodovia Municipal Bom Jesus/Viana, Km 01, Bom Jesus, Piauí 64900-000, Brazil.
authors.forename: G N
authors.initials: GN
authors.lastname: Lopes
authors.forename: C R
authors.initials: CR
authors.lastname: Jesus-Barros
authors.affiliation: Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16, Ilhéus, Bahia 45662-900, Brazil.
authors.forename: J G
authors.initials: JG
authors.lastname: Silva
authors.affiliation: Universidade Federal do Amapá, Programa de Pós-Graduação em Biodiversidade Tropical, Rodovia JK, Km 4, Macapá, Amapá 68902-280, Brazil Universidade Federal do Amapá, Programa de Pós-Graduação em Desenvolvimento Regional, Rodovia JK, Km 4, Macapá, Amapá 68902-280, Brazil Embrapa Amapá, Rodovia JK, Km 5, Nº 2600, Macapá, Amapá 68903-419, Brazil ricardo.adaime@embrapa.br.
authors.forename: R
authors.initials: R
authors.lastname: Adaime
mesh_terms: D063147:Animal Distribution; D000818:Animals; D001938:Brazil; D020387:Food Chain; D005638:Fruit / Q000254:growth & development; D007300:Insect Control; D007814:Larva / Q000502:physiology; D031647:Psidium / Q000254:growth & development; D033621:Tephritidae / Q000254:growth & development / Q000502:physiology*
keywords: Brazil; fruit flies; invasive species; negative binomial distribution