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FRUIT FLY SPECIES (DIPTERA: TEPHRITIDAE) DIVERSITY IN THREE REMNANT AREAS OF THE HIGHLY ENDANGERED ATLANTIC RAINFOREST IN THE STATE OF BAHIA, BRAZIL Silva, Janisete G. 1, Santos, Mirian S. 1; Navack, Kelly I. 1Araujo, Elton L.2; 1

Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz (UESC), Brazil. Email: jgs10@uol.com.br 2

Departamento de Ciências Vegetais, Universidade Federal Rural do Semi-Árido, BR 110, km47, Mossoró, RN, 59625-900, Brazil Background: The Atlantic rainforest in Brazil is considered one of the richest biomes on earth and southern Bahia harbors one of the few and largest remnants of the highly endangered forest and an important center of endemism. Methods: This study was carried out in three remnants of the Atlantic rainforest in the municipalities of Belmonte, Ituberá, and Una, in the state of Bahia, for two years. We documented the diversity and dynamics of the three most frequent fruit fly species. Fruit flies were collected using 10-12 plastic McPhail traps baited with hydrolyzed protein and set up in tree canopies for each fragment. Results: A total of 7,470 fruit fly adults was captured (4,376 females and 3,094 males). Seventeen Anastrepha species were recorded, Anastrepha antunesi Lima, Anastrepha bahiensis Lima, Anastrepha dissimilis Stone, Anastrepha distincta Greene, Anastrepha fraterculus (Wied.), Anastrepha furcata Lima, Anastrepha grandis (Macquart), Anastrepha leptozona Hendel, Anastrepha minensis Lima, Anastrepha obliqua (Macquart), Anastrepha pickeli Lima, Anastrepha pseudoparallela (Loew), Anastrepha quiinae Lima, Anastrepha serpentina (Wied.), Anastrepha simulans Zucchi, Anastrepha sororcula Zucchi, and Anastrepha zenildae Zucchi. Ceratitis capitata (Wied.) specimens were trapped only in the fragment in Belmonte. A. minensis and A. simulans are reported in the state of Bahia for the first time. In the fragment in Belmonte, A. fraterculus showed two population peaks in December 2007 and August 2008, whereas A. leptozona and A. distincta showed a population peak in April de 2008. In the remnant in Ituberá, A. distincta, A. bahiensis, and A. fraterculus showed a population increase from March to June 2008, A. distincta showed a population peak in April and A. bahiensis and A. fraterculus in May. In the fragment in Una, few specimens were trapped during the study period and A. fraterculus showed a population peak in February and April 2008, A. distincta and A. antunesi showed a small population increase in April 2008. In the three fragments, the capture of flies was restricted to a few months during the study period coinciding with the host fruiting period. Conclusions: This is the first fruit fly survey in the Atlantic rainforest in Bahia. Our results elevated to 33 the number of Anastrepha species registered in the state. Most Anastrepha species recorded were monophagous or oligophagous. Financial support: FAPESB, Plantações Michelin da Bahia, CNPq, and UESC. Key words (10 pt size): Anastrepha, population fluctuation, Atlantic rainforest Session: 1 Biology, ecology and behavior

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