Produção de frutos de espécies da floresta de Várzea da Amazônia Central importantes na alimentação de Peixes

Abstract

RESUMO -Com o objetivo de quantificar a contribuição que quatro espécies, Cassia leiandra Benth., Crescentia amazonica Ducke, Macrolobium acaciifolium (Benth.) Benth. e Vitex cymosa Bert. ex Spreng., oferecem através de seus frutos à alimentação dos peixes, foram marcados, aleatoriamente, dez indivíduos adultos destas quatro espécies da floresta de várzea na ilha da Marchantaria -Amazônia Central. O período de maior produção de frutos dá-se no período do alto nível das águas, entre janeiro e maio. A espécie Cassia leiandra apresentou a maior produção com 1.836 kg/ha e amplo consumo pela população local. Os principais peixes consumidores de frutos são tambaqui (Colossoma macropomum), matrinxã (Brycon cephalus), pirapitinga (Piaractus brachypomus), pirarara, (Phractocephalus hemioliopterus), bacu (Lithodoras dors (Triportheus elongatus). As espécies de plantas estudadas apresentam potencial de aproveitamento como fonte de alimento para peixes. Palavras-chave: várzea, produção de frutos, peixe frugívoro Fruit Production from the Floodplain Forest of Central Amazonia: a Food Resource for FishABSTRACT -In order to quantify the contribution of four Central Amazon floodplain trees, Cassia leiandra Benth., Crescentia amazonica Ducke, Macrolobium acaciifolium (Benth.) Benth. and Vitex cymosa Bert. ex Spreng., as food resource for fishes, ten adult individuals of each species were labeled on Marchantaria Island. The peak of fruit offer occurred during the high water season, between the months of January and May. C. leiandra showed the biggest fruit monkeys and local people. The principal fruit consuming fishes were, tambaqui (Colossoma macropomum), matrinxã (Brycon cephalus), pirapitinga (Piaractus brachypomus), pirarara, (Phractocephalus hemioliopterus), bacu (Lithodoras dorsalis), pacu (Myiossoma sp., Myleus sp., Metynnis sp., Mylesinus sp.) and sardinha (Triportheus elongatus). The tree species show

New records of crustaceans infesting Phractocephalus hemioliopterus (Siluriformes: Pimelodidae), the large catfish from the Amazon

“…According to the Macapá-AP Meteorology rainfall volume was 23.17 mm, with a maximum temperature of 45 ºC and a minimum of 32 °C and relative humidity 45.48%, at the time of collection. This is the main period for feeding, growth and energy accumulation for several species of fish, especially during the dry season (Braga et al, 2011;Maia & Chalco, 2002).…”

“…This catfish supports large commercial fisheries in the Amazon River system (Barbarino-Duque & Winemiller, 2003). This catfish is omnivorous, with carnivorous tendencies, and feeds on several species of fish including other Pimelodidae, Prochilodontidae, Cetopicidae, Synbranchidae, Serrasalmidae species, as well as reptiles, amphibians, some vegetables ( Barbarino-Duque & Winemiller, 2003), crabs, fruits and seeds (Goulding, 1980;Maia & Chalco, 2002). Its reproduction occurs during the seasonal floodings of the Amazon (Ferreira et al, 1998).…”