How the body shape changes by the habitat hydrological factors in freshwater benthic fishes; case study on the genera Cobitis (Cobitidae) and Ponticola (Gobiidae)
Benthic fish groups with low mobility are often restricted to a narrow range of a stream course, and their morphological characters tend to be affected substantially by the environmental conditions in their habitat. Due to morphological affectability of fishes by many factors in lotic ecosystems, a...
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| Format: | Article |
| Language: | English |
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University of Tehran
2019-02-01
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| Series: | International Journal of Aquatic Biology |
| Subjects: | |
| Online Access: | http://ij-aquaticbiology.com/index.php/ijab/article/view/601 |
| _version_ | 1811205224325447680 |
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| author | Adeleh Heidari Meysam Salehi Hamed Mousavi-Sabet |
| author_facet | Adeleh Heidari Meysam Salehi Hamed Mousavi-Sabet |
| author_sort | Adeleh Heidari |
| collection | DOAJ |
| description | Benthic fish groups with low mobility are often restricted to a narrow range of a stream course, and their morphological characters tend to be affected substantially by the environmental conditions in their habitat. Due to morphological affectability of fishes by many factors in lotic ecosystems, a landmark-based hypothesis was used to investigate the effects of habitat hydrological conditions on morphological characteristics in freshwater benthic fishes; a case study on the genera Ponticola and Cobitis. A total of 216 gobies and 128 spined loaches specimens were caught from six rivers with different hydrological conditions, along the southern Caspian Sea basin. In discriminant function analysis (DFA), the overall assignment of gobies and loaches into their original groups were 95.7% and 80.5%, respectively. Discriminant analysis for pairwise groups shows a longer snout, shallow body/head, and elongated body for populations living in the large slope channel with faster water velocity versus relatively short snout and deep body/head for those living in small slope channel with slower water velocity. The results confirm the possibility of changes in the morphological characters of the benthic gobies and loaches, which should be considered in taxonomical and biological studies. |
| first_indexed | 2024-04-12T03:27:14Z |
| format | Article |
| id | doaj.art-64d88ff3539444cc9b08d4e541d4adb1 |
| institution | Directory Open Access Journal |
| issn | 2383-0956 2322-5270 |
| language | English |
| last_indexed | 2024-04-12T03:27:14Z |
| publishDate | 2019-02-01 |
| publisher | University of Tehran |
| record_format | Article |
| series | International Journal of Aquatic Biology |
| spelling | doaj.art-64d88ff3539444cc9b08d4e541d4adb12022-12-22T03:49:39ZengUniversity of TehranInternational Journal of Aquatic Biology2383-09562322-52702019-02-0171455510.22034/ijab.v7i1.601292How the body shape changes by the habitat hydrological factors in freshwater benthic fishes; case study on the genera Cobitis (Cobitidae) and Ponticola (Gobiidae)Adeleh Heidari0Meysam Salehi1Hamed Mousavi-Sabet2Department of Fisheries Sciences, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Guilan, Iran.Abzi-Exir Aquaculture Co., Agriculture Section, Kowsar Economic Organization, Tehran, Iran.Department of Fisheries Sciences, Faculty of Natural Resources, University of Guilan, Someh Sara, Guilan, Iran.Benthic fish groups with low mobility are often restricted to a narrow range of a stream course, and their morphological characters tend to be affected substantially by the environmental conditions in their habitat. Due to morphological affectability of fishes by many factors in lotic ecosystems, a landmark-based hypothesis was used to investigate the effects of habitat hydrological conditions on morphological characteristics in freshwater benthic fishes; a case study on the genera Ponticola and Cobitis. A total of 216 gobies and 128 spined loaches specimens were caught from six rivers with different hydrological conditions, along the southern Caspian Sea basin. In discriminant function analysis (DFA), the overall assignment of gobies and loaches into their original groups were 95.7% and 80.5%, respectively. Discriminant analysis for pairwise groups shows a longer snout, shallow body/head, and elongated body for populations living in the large slope channel with faster water velocity versus relatively short snout and deep body/head for those living in small slope channel with slower water velocity. The results confirm the possibility of changes in the morphological characters of the benthic gobies and loaches, which should be considered in taxonomical and biological studies.http://ij-aquaticbiology.com/index.php/ijab/article/view/601environmental factors,truss network system. discrimination, body shape. |
| spellingShingle | Adeleh Heidari Meysam Salehi Hamed Mousavi-Sabet How the body shape changes by the habitat hydrological factors in freshwater benthic fishes; case study on the genera Cobitis (Cobitidae) and Ponticola (Gobiidae) International Journal of Aquatic Biology environmental factors,truss network system. discrimination, body shape. |
| title | How the body shape changes by the habitat hydrological factors in freshwater benthic fishes; case study on the genera Cobitis (Cobitidae) and Ponticola (Gobiidae) |
| title_full | How the body shape changes by the habitat hydrological factors in freshwater benthic fishes; case study on the genera Cobitis (Cobitidae) and Ponticola (Gobiidae) |
| title_fullStr | How the body shape changes by the habitat hydrological factors in freshwater benthic fishes; case study on the genera Cobitis (Cobitidae) and Ponticola (Gobiidae) |
| title_full_unstemmed | How the body shape changes by the habitat hydrological factors in freshwater benthic fishes; case study on the genera Cobitis (Cobitidae) and Ponticola (Gobiidae) |
| title_short | How the body shape changes by the habitat hydrological factors in freshwater benthic fishes; case study on the genera Cobitis (Cobitidae) and Ponticola (Gobiidae) |
| title_sort | how the body shape changes by the habitat hydrological factors in freshwater benthic fishes case study on the genera cobitis cobitidae and ponticola gobiidae |
| topic | environmental factors,truss network system. discrimination, body shape. |
| url | http://ij-aquaticbiology.com/index.php/ijab/article/view/601 |
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