<b>Influence of environmental integrity on the feeding biology of <i>Astyanax altiparanae</i> (Garutti & Britski, 2000) in the Ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497
This study aimed at analyzing the influence of different levels of environmental integrity of streams of the Ivinhema river basin (Mato Grosso do Sul State, Brazil) on the diet of A. altiparanae. Samplings were performed from July 2001 to November 2011 at 101 sites, using sieves, seining and gill ne...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Universidade Estadual de Maringá
2013-07-01
|
Series: | Acta Scientiarum : Biological Sciences |
Subjects: | |
Online Access: | http://186.233.154.254/ojs/index.php/ActaSciBiolSci/article/view/19497 |
id |
doaj-52dbcba75ca14954bd3151d51aa372b7 |
---|---|
record_format |
Article |
spelling |
doaj-52dbcba75ca14954bd3151d51aa372b72020-11-25T02:30:57ZengUniversidade Estadual de MaringáActa Scientiarum : Biological Sciences1679-92831807-863X2013-07-0135454154810.4025/actascibiolsci.v35i4.1949710097<b>Influence of environmental integrity on the feeding biology of <i>Astyanax altiparanae</i> (Garutti & Britski, 2000) in the Ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497Lucilene Finoto Viana0Yzel Rondon Suarez1Sidnei Eduardo Lima-Junior2Universidade Estadual de Mato Grosso do SulUniversidade Estadual de Mato Grosso do SulUniversidade Estadual de Mato Grosso do SulThis study aimed at analyzing the influence of different levels of environmental integrity of streams of the Ivinhema river basin (Mato Grosso do Sul State, Brazil) on the diet of A. altiparanae. Samplings were performed from July 2001 to November 2011 at 101 sites, using sieves, seining and gill nets, and electrofishing. Streams were classified into three levels of environmental integrity. We analyzed 664 stomachs with the methods of frequency of occurrence and volumetric analysis index, combined in the Importance Index (AI). The species was omnivorous, with predominance of allochthonous resources. At the least impacted sites, the most representative resource was allochthonous plant material; and in the altered sites in the rainy period the most consumed item was allochthonous arthropods. On the other hand, at the most impacted sites in the dry period there was a lower consumption of allochthonous plant material and allochthonous arthropods, compared with other levels of environmental integrity considered, with higher consumption of autochthonous arthropods. The results evidenced that in the least impacted sites there was greater contribution from allochthonous resources, probably because these environments show a more preserved riparian forest.http://186.233.154.254/ojs/index.php/ActaSciBiolSci/article/view/19497streamfishgut contentfood habits |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lucilene Finoto Viana Yzel Rondon Suarez Sidnei Eduardo Lima-Junior |
spellingShingle |
Lucilene Finoto Viana Yzel Rondon Suarez Sidnei Eduardo Lima-Junior <b>Influence of environmental integrity on the feeding biology of <i>Astyanax altiparanae</i> (Garutti & Britski, 2000) in the Ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497 Acta Scientiarum : Biological Sciences stream fish gut content food habits |
author_facet |
Lucilene Finoto Viana Yzel Rondon Suarez Sidnei Eduardo Lima-Junior |
author_sort |
Lucilene Finoto Viana |
title |
<b>Influence of environmental integrity on the feeding biology of <i>Astyanax altiparanae</i> (Garutti & Britski, 2000) in the Ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497 |
title_short |
<b>Influence of environmental integrity on the feeding biology of <i>Astyanax altiparanae</i> (Garutti & Britski, 2000) in the Ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497 |
title_full |
<b>Influence of environmental integrity on the feeding biology of <i>Astyanax altiparanae</i> (Garutti & Britski, 2000) in the Ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497 |
title_fullStr |
<b>Influence of environmental integrity on the feeding biology of <i>Astyanax altiparanae</i> (Garutti & Britski, 2000) in the Ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497 |
title_full_unstemmed |
<b>Influence of environmental integrity on the feeding biology of <i>Astyanax altiparanae</i> (Garutti & Britski, 2000) in the Ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497 |
title_sort |
<b>influence of environmental integrity on the feeding biology of <i>astyanax altiparanae</i> (garutti & britski, 2000) in the ivinhema river basin</b> - doi: 10.4025/actascibiolsci.v35i4.19497 |
publisher |
Universidade Estadual de Maringá |
series |
Acta Scientiarum : Biological Sciences |
issn |
1679-9283 1807-863X |
publishDate |
2013-07-01 |
description |
This study aimed at analyzing the influence of different levels of environmental integrity of streams of the Ivinhema river basin (Mato Grosso do Sul State, Brazil) on the diet of A. altiparanae. Samplings were performed from July 2001 to November 2011 at 101 sites, using sieves, seining and gill nets, and electrofishing. Streams were classified into three levels of environmental integrity. We analyzed 664 stomachs with the methods of frequency of occurrence and volumetric analysis index, combined in the Importance Index (AI). The species was omnivorous, with predominance of allochthonous resources. At the least impacted sites, the most representative resource was allochthonous plant material; and in the altered sites in the rainy period the most consumed item was allochthonous arthropods. On the other hand, at the most impacted sites in the dry period there was a lower consumption of allochthonous plant material and allochthonous arthropods, compared with other levels of environmental integrity considered, with higher consumption of autochthonous arthropods. The results evidenced that in the least impacted sites there was greater contribution from allochthonous resources, probably because these environments show a more preserved riparian forest. |
topic |
stream fish gut content food habits |
url |
http://186.233.154.254/ojs/index.php/ActaSciBiolSci/article/view/19497 |
work_keys_str_mv |
AT lucilenefinotoviana binfluenceofenvironmentalintegrityonthefeedingbiologyofiastyanaxaltiparanaeigaruttibritski2000intheivinhemariverbasinbdoi104025actascibiolsciv35i419497 AT yzelrondonsuarez binfluenceofenvironmentalintegrityonthefeedingbiologyofiastyanaxaltiparanaeigaruttibritski2000intheivinhemariverbasinbdoi104025actascibiolsciv35i419497 AT sidneieduardolimajunior binfluenceofenvironmentalintegrityonthefeedingbiologyofiastyanaxaltiparanaeigaruttibritski2000intheivinhemariverbasinbdoi104025actascibiolsciv35i419497 |
_version_ |
1724826656497991680 |