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International Journal of Marine Science 2014, Vol.4, No.45, 1-5
http://ijms.biopublisher.ca
3
with haemal processes fused together forming haemal
spine ventrally, abdominal region is the region that
includes abdominal vertebrae, and caudal region is the
region that contains caudal vertebrae Chapleau (1988),
Ramzu and Meunier (1999), and Nowroozi (2012). As
the aim of the present study was to report and describe
the abnormality cases in the specimens of the two
species, no attempt was made to take the study further
and to assess the damage at the histological and
cellular levels and left for a future detailed study
which will take into consideration comparison of the
normal and abnormal specimens.
The vertebral column of the normal and abnormal
specimens were deposited in the ichthyological
collection of the Marine Science Centre, University of
Basrah, Iraq.
2 Results
Spinal anomalies were visible on the fish body of the
two species immediately after capture, with the spine
curved at two places compared with the normal
specimens (Figures 2~5). The internal body spaces
and organs were normally developed and placed. The
skeleton of the deformed specimens of the two species
are compared with that of the normal for both species
(Figures 6~9). For
C. luteus
specimen, two flexions of
the vertebral column at the caudal region are present.
One severe twisting at the 6
th
caudal vertebra and
another slight bent at the 14
th
caudal vertebra. Slight
bend of the neural and haemal spines is present in the
caudal vertebrae 9
th
to 14
th
(Figure 8). The ratio of the
vertebral column to the fish total length of the
deformed specimen is 0.32, while it is o.63 in the
normal specimen. The value of the angles lies between
the lines passing through the sides of the vertebral
Figure 4
Tenualosa ilisha
, 230 mm Total length, normal
Figure 5
Tenualosa ilisha
, 200 mm Total length, abnormal
Figure 6 Normal vertebral column of
Carasobarbus luteus
Figure 7 Normal vertebral column of
Tenualosa ilisha
Figure 8 Abnormal vertebral column of
Carasobarbus luteus
Figure 9 Abnormal vertebral column of
Tenualosa ilisha