Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil
| Main Authors: | , |
|---|---|
| Format: | Online |
| Language: | eng |
| Published: |
Universidad de Costa Rica
2008
|
| Online Access: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5629 |
| id |
RBT5629 |
|---|---|
| record_format |
ojs |
| spelling |
RBT56292022-06-06T18:22:59Z Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil Giarriozzo, Tommasso Saint Paul, Ulrich Sciades herzbergii estrategia alimentaria Ariidae manglar contenidos estomacales Ocypodidae Grapsidae feeding strategy mangrove stomach contents The feeding ecology of pemecou sea catfish (Sciades herzbergii) was studied bimonthly from September 2003 to July 2004 in a macrotidal mangrove creek at Curuçá estuary, Brazil. Feeding activity and relative importance of prey groups were assessed in 528 and 226 specimens (6.2 to 36.0 cm total length), respectively, using stomach contents. A total of 1 820 specimens were caught. The fish left the creek with an average of 2.2 % of their body weight in prey. Feeding activity was lower in the dry season (September and November 2003) than in the rainy season (January to May 2004). The diet was dominated by Ocypodidae and Grapsidae. Feeding strategies of the pemecou sea catfish indicated a slight variation between the diets of adults and juveniles; however, the main factor leading to diversification in the diet were the seasons. Opportunistic feeding behavior was observed in the dry season, shifting to more specialized feeding in the wet season. This temporal diet shift may be explained by the environmental seasonal variations (e.g. transparency of the water, high water level) in the intertidal mangrove creek habitat. Universidad de Costa Rica 2008-06-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5629 10.15517/rbt.v56i2.5629 Revista de Biología Tropical; Vol. 56 No. 2 (2008): Volume 56 – Regular number 2 – June 2008; 861–873 Revista de Biología Tropical; Vol. 56 Núm. 2 (2008): Volumen 56 – Número regular 2 – Junio 2008; 861–873 Revista Biología Tropical; Vol. 56 N.º 2 (2008): Volume 56 – Regular number 2 – June 2008; 861–873 2215-2075 0034-7744 10.15517/rbt.v56i2 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5629/5373 Copyright (c) 2008 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Giarriozzo, Tommasso Saint Paul, Ulrich |
| spellingShingle |
Giarriozzo, Tommasso Saint Paul, Ulrich Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil |
| author_facet |
Giarriozzo, Tommasso Saint Paul, Ulrich |
| author_sort |
Giarriozzo, Tommasso |
| title |
Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil |
| title_short |
Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil |
| title_full |
Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil |
| title_fullStr |
Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil |
| title_full_unstemmed |
Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil |
| title_sort |
ontogenetic and seasonal shifts in the diet of the pemecou sea catfish sciades herzbergii (siluriformes: ariidae), from a macrotidal mangrove creek in the curuçá estuary, northern brazil |
| title_alt |
Ontogenetic and seasonal shifts in the diet of the pemecou sea catfish Sciades herzbergii (Siluriformes: Ariidae), from a macrotidal mangrove creek in the Curuçá estuary, Northern Brazil |
| publisher |
Universidad de Costa Rica |
| publishDate |
2008 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5629 |
| work_keys_str_mv |
AT giarriozzotommasso ontogeneticandseasonalshiftsinthedietofthepemecouseacatfishsciadesherzbergiisiluriformesariidaefromamacrotidalmangrovecreekinthecurucaestuarynorthernbrazil AT saintpaululrich ontogeneticandseasonalshiftsinthedietofthepemecouseacatfishsciadesherzbergiisiluriformesariidaefromamacrotidalmangrovecreekinthecurucaestuarynorthernbrazil |
| _version_ |
1810114560845152256 |