cifri annual report 2007- 2008 - Central Institute of Brackishwater ...

CIFRI ANNUAL REPORT 2007- 2008
Table 3 : Health assessment index values of LabPo butu from rivcr Ilamodcr
t
Damoder river
HAT (mean)
SD
CV%
Panchet (reference site) S1
14.67
15.52
105.80
Namomejia (degraded site)
46.67
3 1.55
67.60
S2
Jamalpur (reference site) S3
15.33
15.06
98.24
Thc rlvcragc HA1 of Sl(14.67) arid S3(1.5.33)
rcspcctively. (Tablc 3) rcflcctcd low I IAI scorc.1 t
itidicatcd that water quality in this stretch is optir~ium
for maintaining good health of L. Iurtrr anci there is no
111i!ic)r contaminant inputs in the systc11i.l3ut thc
nvcragc HA1 values for S2 was high (46.67) indicating
that thc hcaltll of' L.l~crttr population is in ;I relatively
poor condition cornparcd to S 1 & S2. Anornr~lics in
thrcc of the index variables liver, gills and parasitcs
west tllilinly responsible for itiflucncing the IlAl of
I,.hrrrrr in S.3 .
Fish c.oitrntrrnitr*strrtlios: 1;isli samplcs wcsc collcctcd
at all tlle sites by cxpcrirncntitl rictting fi-orn all flic
. .
habit;tts using dif'fkrcnt $cars. Jllc fish spccics
abundance wcrc rccordcd and ;ill tllc lislic*s \vcsc
catcgori;lcd into vrlrio~~s guilds fijr cstirnating 12
riictrics of IHI. At pl-cscnt 55 spccics hclongrng to 22
f\~milics coultl hc rccordcd. Significantly 5 cxot~c
spccics liavc hccn rccorclcd in tlic catcllc!, VI/.
C'\prit~i/,~ (~(itpio
i~lo11~1, .,f.tloI~ili,~,
~ ' t ~ ~ t ~ o ~ ~ I ~ ~ ~ t ~ ~ ~ ~ ~ ,
Tillipilr n~o,s,~trtlihic~tr trtrd 7: rrilotic-rr
Exotic fish spccics C. carpin and 0. rtiloticrrs in rivcr Damoder
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