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