Diet of fishes in Passa Cinco stream, Corumbataí River sub-basin, São Paulo state, Brazil

Abstract

The aim of this study was to describe and classify the food preference of fish species in Passa Cinco stream. The grade of feeding preference was applied to stomachs considered replete. This method consists of attributing values to food items found in certain species, according to the participation of each item in the analysed stomach. We analysed 576 full stomachs of 28 species. The autochthonous insects were the main constituents of the diets of these species, and the majority of ingested items classified as occasional. Allochthonous items such as plant debris, seeds and earthworms were associated with higher-order site. Of the total possible combination pairs of species, 29.4% showed high overlap, which occurred mainly within species that consumed aquatic insect larvae. However, those species showed significant differences in the exploitation of food resources. Omnivory was common, showing the plasticity of the required species that inhabit environments as found in streams.

Ecomorphology and diet reflect the spatial segregation between two Siluriformes species inhabiting a stream of the Bodoquena Plateau, in Central Brazil

“…The consumption of plant matter registered in this study has already been reported for Pimelodella species (viana et al, 2006;ronDineli et al, 2011). However, it is important to note that the largest amount of plant material was consumed in the rainy season.…”

Feeding ecology of stream-dwelling Characidae (Osteichthyes: Characiformes) from the upper Tocantins River, Brazil

“…Our results showed that the diet of the four species studied is largely insectivorous, based both on autochthonous and allochthonous items, and that there are no seasonal differences related to the hydrological regimen. Other studies conducted in Neotropical streams also showed that small Characidae species frequently feed on invertebrates, and include both autochthonous and allochthonous items in their diets (TANK et al 2010, ORTAZ et al 2011, RONDINELI et al 2011, XIMENES et al 2011, BONATO et al 2012, MANNA et al 2012.…”

“…Species of Characidae, such as those studied in the present paper, are largely widespread through the Neotropics and Central America (REIS et al 2003, BUCKUP et al 2007, LIMA et al 2007) and have been classified into different feeding guilds, for instance insectivorous (e.g., CASATTI et al 2003, SANTOS et al 2009, BONATO et al 2012), herbivorous (e.g., MESCHIATTI 1995, CASSEMIRO et al 2002 and omnivorous (e.g., CASSEMIRO et al 2002, BRANDÃO-GONÇALVES et al 2009, RONDINELI et al 2011, changing feeding habits according to the environment in which they occur. Our results showed that the diet of the four species studied is largely insectivorous, based both on autochthonous and allochthonous items, and that there are no seasonal differences related to the hydrological regimen.…”

<strong>Annotated list and key to the stream fishes of Trinidad &amp; Tobago</strong>

“…Widely distributed in streams south of the Northern Range divide, often penetrating far upstream (Kenny 1995, Phillip 1998 (Rondineli et al 2011), herbivore . Nocturnal.…”

“…Extended spawning coincident with high rainfall (Alkins-Koo 2000); females drink sperm, which is then passed through the gut, fertilising eggs as they are shed (Kodha et al 1995), eggs deposited on nest prepared on leaves, but are not guarded (Bruton 1996). Detritivore/scavenger (Alkins-Koo 2000), omnivore, insectivore (Rondineli et al 2011), benthophagous (Orlindi Bonato et al 2012. 80 mm.…”