| Autor: |
Al-Kahem-Al-Balawi HF; Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia., Al-Ghanim KA, Ahmad Z, Temraz TA, Al-Akel AS, Al-Misned F, Annazri H |
| Jazyk: |
angličtina |
| Zdroj: |
Pakistan journal of biological sciences : PJBS [Pak J Biol Sci] 2008 Oct 01; Vol. 11 (19), pp. 2300-7. |
| DOI: |
10.3923/pjbs.2008.2300.2307 |
| Abstrakt: |
The present study showed that the population density of a native fish (A. dispar) in the freshwater environments of Saudi Arabia is declining. It is concluded from the present investigations that A. dispar is not threatened by a single isolated factor, but instead faces numerous stressors that jeopardize multiple stages of their life cycle. Reduced availability of food, habitat degradation, chemical contamination, introduction of exotic species and exploitation have contributed to the decline of such native fish's abundance. Protecting fishes will help to protect aquatic biodiversity and in conservation of biological heritage of the country. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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