Saad M. S. Abdulsamad
@uobasrah.edu.iq
College of Education for Pure Sciences/ Department of Biology
University of Basrah
EDUCATION
Doctorate in Philosophy in Comparative Anatomy of Chordates
RESEARCH INTERESTS
Fish Biology-Fish Ecology-Fish Anatomy and Physiology
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Laith A. Jawad, Saad M.S. Abdulsamad, Azal N.B. Al-Nusear, Baradi Waryani, and Jitka Rutkayová
Elsevier BV
Saccular otolith mass asymmetry is examined in three sparid fish species, Acanthopagrus bifasciatus, A. arabicus, and Sparidentex hasta collected from Khor Abdullah at the North Persian Gulf. This characteristic was computed as the disparity between the weight of the right and left otoliths divided by mean otolith weight in the three sparid species investigated. According to the previous cases obtained on another symmetrical fish species, the absolute value of x in these species does not determine by fish length and otolith growth ratio, while the absolute rate of otolith weight disparity is boosted with the fish length. The estimate of x was between -0.2 and +0.2. Otolith mass asymmetry can show some growth disorder of fish owing to environmental influence.
Saad M.S. Abdulsamad, Laith A. Jawad, Azal N.B. Al-Nusear, Baradi Waryani, and Jitka Rutkayová
Elsevier BV
Bilateral asymmetry is presumed to reveal the developmental variability of the fish in polluted aquatic environments. In these habitats, high-level asymmetry develops, and these fish expend more energy to balance their growth than fish that are not under an impact. A total of 210 specimens of Acanthopagrus bifasciatus, A. latus and Sparidentex hasta were collected from the marine waters of Iraq in the northwest part of the Arabian Gulf. The asymmetry was calculated for the sagittal otolith characters of length and width. Otolith width has lower asymmetry than otolith length for the three sparid fish species investigated. An increase in the value of fluctuating asymmetry with fish length was observed. This could be a pertinent indicator of pollution in the habitat.