2014
DOI: 10.1590/1676-06032014001613
| View full text |Cite
|
Sign up to set email alerts
|

Abstract: SILVA, M.R., FUGI, R., CARNIATTO, N., GANASSIN, M.J.M. Importance of allochthonous resources in the diet of Astyanax aff. fasciatus (Osteichthyes: Characidae) in streams: a longitudinal approach.http://dx.doi.org/10.1590/1676-06032014001613Abstract: The aim of this investigation was to respond the following question: is the consumption of allochthonous resources by Astyanax aff. fasciatus influenced by the longitudinal gradient in streams? To respond this question we sampled fish in the headwater, middle and m… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

3
7
0

Year Published

2015
2015
2023
2023

Publication Types

Select...
6

Relationship

0
6

Authors

Journals

citations
Cited by 7 publications
(10 citation statements)
references
References 40 publications
3
7
0
Order By: Relevance
“…The predominance of autochthonous items of animal origin in the stomachs of individuals from this species observed here is in accordance with the fact that autochthonous prey predominates in environments without vegetation cover (Silva et al 2014) and the behavioral, morphological and feeding characteristics of genus Aequidens, such as greater activity during the day (Lowe-McConnell 1999), an improved visual system (Soares 1979) and foraging based on exploration of the substrate (Bührnheim 2002). The feeding behavior of A. tetramerus facilitates ingestion of autochthonous items, unlike that of other stream-dwelling fish species that swim and feed in midwater, ingesting large amounts of allochthonous items (Mazzoni and Iglesias-Rios 2002).…”
Section: Acta Amazonicasupporting
confidence: 89%
“…The predominance of autochthonous items of animal origin in the stomachs of individuals from this species observed here is in accordance with the fact that autochthonous prey predominates in environments without vegetation cover (Silva et al 2014) and the behavioral, morphological and feeding characteristics of genus Aequidens, such as greater activity during the day (Lowe-McConnell 1999), an improved visual system (Soares 1979) and foraging based on exploration of the substrate (Bührnheim 2002). The feeding behavior of A. tetramerus facilitates ingestion of autochthonous items, unlike that of other stream-dwelling fish species that swim and feed in midwater, ingesting large amounts of allochthonous items (Mazzoni and Iglesias-Rios 2002).…”
Section: Acta Amazonicasupporting
confidence: 89%
“…Trophic webs are often studied through a traditional approach wherein species are assigned to guilds or trophic groups, without considering ontogeny (Rudolf et al, 2014). This practice has often been adopted in the existing research on Astyanax species (Bennemann et al, 2005;Silva et al, 2014). However, ontogenetic niche shifts are known from 80 % of animal taxa (Werner, 1988;Hertz et al, 2016); furthermore, the main source of intraspecific diversity in ecosystems is the variation across ontogenetic stages and size of individuals (Rudolf and Rasmussen, 2013).…”
Section: Discussionmentioning
confidence: 99%
“…Protection of its habitats should consider not only the environmental quality of the streams, but also the integrity of adjacent riparian vegetation. The importance of riparian vegetation to fish diet is well recognized and documented for the allochthonous feeder Astyanax species (Gomiero and Braga, 2003;Borba et al, 2008;Ferreira et al, 2012;Souza and Lima-Junior, 2013;Silva et al, 2014;Leite et al, 2015). Conserving the streams is also important for those autochthonous feeders (Cavalheiro and Fialho, 2016).…”
Section: Discussionmentioning
confidence: 99%
“…Food resources from riparian vegetation often play an important role in the diet of stream fish. In streams with greater vegetation cover and better preservation, several studies indicate that allochthonous items are more important for fish (Abilhoa et al, 2010;Oliveira & Bennemann, 2005;Silva et al, 2014). This proportion was lower in streams with low vegetation cover and low flow.…”
Section: Proportion Of Allochthonous Itemsmentioning
confidence: 99%