Assessment of Pesticide Residues in Flesh of Catla catla from Ravi River, Pakistan

Table 1

Analysis of variance on pesticide concentrations in Catla catla collected from Ravi River from Shahdara to Head Balloki.

(a)

S.O.V	D.F1	𝐹-Values
		DDT	DDE	Endosulfan	Carbofuran
Months	11	650.88^∗∗	395.44^∗∗	185.54^∗∗	30.81^∗∗
Sampling Site	9	14.22^∗∗	61.12^∗∗	115.33^∗∗	8.24^∗∗
Months × Sites	9	2028^∗∗	4.90^∗∗	22.71^∗∗	0.28^NS

∗∗Highly Significant (𝑃<0.01); NS = nonsignificant (𝑃>0.05).

(b)

S.E	DD	DDE	Endosulfan	Carbofuran
Months	0.0049	0.0071	0.0009	0.0129
Sampling Sites	0.005	0.0062	0.0008	0.012
Months × Sites	0.016	0.0211	0.0031	0.0390

(c) Sampling sites wise comparison of means (𝜇g/g ± SE)

Sampling station	DDT	DDE	Endosulfan	Carbofuran
LB-1 = Shahdara bridge	3.331±0.0246^C	2.292±0.0249^E	0.112±0.0031^F	0.260±0.0158^C
LB-2 = Bakar Mandi nulla fall	3.359±0.0239^BC	2.317±0.0234^DE	0.116±0.0027^EF	0.265±0.0134^BC
LB-3 = Before Hudiara nulla fall	3.270±0.0235^BC	2.340±0.0270^CD	0.119±0.0021^CD	0.297±0.0160^BC
LB-4 = After Hudiara nulla fall	3.250±0.0235^B	2.411±0.0296^B	0.131±0.0057^B	0.314±0.0161^B
LB-5 = Balloki Headworks	3.270±0.0234^BC	2.351±0.0305^BC	0.135±0.0051^B	0.304±0.0171^BC
RB-1 = Shahdara bridge	3.240±0.0274^BC	2.322±0.0274^DE	0.112±0.0031^F	0.270±0.0150^BC
RB-2 = After Farrukhabad nulla	3.250±0.0229^BC	2.346±0.0268^BC	0.116±0.0032^DE	0.299±0.0150^BC
RB-3 = Before Degh fall	3.247±0.0220^BC	2.341±0.0263^BC	0.118±0.0020^D	0.312±0.0170^AB
RB-4 = After Degh fall	3.389±0.0166^A	2.460±0.0340^A	0.136±0.0031^A	0.370±0.0191^A
RB-5 = Balloki Headworks	3.255±0.0214^B	2.290±0.0196^E	0.121±0.0028^C	0.292±0.0160^BC

(d) Month wise comparison of means (μg/g ± SE)

Months	DDT	DDE	Endosulfan	Carbofuran
September 2009	3.041±0.010^G	2.180±0.015^H	0.127±0.004^C	0.230±0.009^D
October 2009	3.170±0.008^D	2.255±0.011^F	0.095±0.002^F	0.150±0.030^E
November 2009	3.144±0.005^E	2.234±0.004^F	0.116±0.004^E	0.290±0.006^C
December 2009	3.351±0.004^A	2.509±0.014^A	0.120±0.003^D	0.360±0.010^A
January 2010	3.355±0.002^A	2.392±0.027^E	0.137±0.003^A	0.321±0.015^AB
February 2010	3.347±0.003^A	2.405±0.012^DE	0.136±0.011^AB	0.333±0.013^AB
March 2010	3.299±0.012^B	2.419±0.017^D	0.129±0.004^C	0.336±0.009^AB
April 2010	3.344±0.004^A	2.440±0.016^C	0.134±0.004^B	0.352±0.006^A
May 2010	3.340±0.003^A	2.480±0.013^B	0.134±0.006^B	0.350±0.005^A
June 2010	3.341±0.005^A	2.432±0.018^C	0.130±0.002^B	0.308±0.011^BC
July 2010	3.238±0.003^C	2.220±0.003^F	0.116±0.002^D	0.339±0.009^AB
August 2010	3.097±0.013^F	2. 2.186±0.007^G	0.099±0.002^G	0.234±0.008^D

Means sharing similar letters in a single column are statistically nonsignificant (𝑃>0.05).