Research Article

Reduced Life Expectancy Model for Effects of Long Term Exposure on Lethal Toxicity with Fish

Table 1

Regression analysis of the relationship between lnLT50 and LT50.

Fish species: organic compoundsReported NLT
day (lnNLT)
Calculated NLT day (lnNLT)**Intercept ( )Slope ( )*Regression coefficient ( )Reference

Oreochromis niloticus
 Dimethoate 500 (6.22) 
(Mugisha and Ddumba, 2006 [37])
480 (6.18)36,000−7,8000.949 Phommakone, 2004 [38]
 Dimethoate 34,000−3,4000.900
 Captan 580−1300.984Boran et al., 2012 [39]
 2,3,4,5-Tetrachlorophenol 310−580.627 Holcombe et al., 1984 [40]

Oncorhynchus gorbuscha
 Glyphosate 600 (6.39) 
(Healey, 1986 [41]; Scott and Crossman, 1973 [42])
120 (4.78)130,000−50,0000.962Wan et al., 1989 [43]
 MOW0818 3,300−6400.985
 MOW8709 60,000−21,0000.943
 Roundup 28,000−3,0000.957

Salmo gairdneri
 2,3,4,5-Tetrachlorophenol 3300 (8.1) 
(Gorbach, 1961 [44])
5400 (8.6)100,000−9,4000.832Holcombe et al., 1984 [40]
 Glyphosate 2,600−3600.977Wan et al., 1989 [43]
 MW0818 45,000−10,0000.986
 MOW8709 22,000−1,8000.982
 Roundup

Oncorhynchus  tshawytesha
 Glyphosate 2100 (7.65) 
(Moyle, 2002 [45]; Healey [41])
2000 (7.60)110,000−17,0000.885Wan et al., 1989 [43]
 MW0818 3,000−3600.905
 MOW8709 58,000−7,9000.984
 Roundup 29,000−3,6000.978

Oncorhynchus  keta
 Glyphosate 2700 (7.8) 
(Scott and Crossman, 1973 [42])
3800 (8.23) 89,000−14,0000.998Wan et al., 1989 [43]
 MOW0818 2,400−1900.818
 MOW8709 44,000 4,9000.956
 Roundup 23,000−4,4000.980

Oncorhynchus  kisutch
 Glyphosate 1800 (7.51) 
(Scott and Crossman, 1973 [42])
2600 (7.88)12,000−2,0000.984Wan et al., 1989 [43]
 MOW0818 3,300−3100.820
 MOW8709 48,000−5,2000.823
 Roundup 34,000 5,1000.972

Anguilla anguilla
 Methylparathion 4700 (8.46) 
(EC Fisheries, 2013 [46])
3700 (8.22)54,00−8700.977Ferrando et al., 1991 [47]
 Methildathion 3,700−1,7000.967
 Chlorpyrifos 1,200−5500.905
 Trichlorfon 4,900−1,2000.930
 Fenitrothion 340−1300.817
 Endosulfan 52−1.30.742
 Diazinon 160−590.981

Heteropenteus (Saccobranchus) fossilis
 Dimethoate6600 (8.79) 
(Flower, 1925 [48]; Altman and Dittmer, 1962 [49])
8100 (9.02)17,000−1,6000.930
 Dimethoate 3,400−3000.966Pandey et al., 2009 [50]
 Dimethoate 3,400−290 0.982
 Chlordane 500−860.992Pandey et al., 2008 [51]
 Ekatin 13,000 −1,100 0.929Verma et al., 1978 [52]
 Ekalaux 2,800−9000.943
 Sumithion 15,000−1,600 0.871

Poecilia.reticulata
 Methylbenzoate550 (6.3) (Fish Base [53]) 220 (5.4)
 Benzonitrile 59,000−12,0000.931Verhaar et al., 1999 [54]
 Benzaldehyde 240,000−42,0000.908
 Benzylalcohol 23,000−6,2000.830
 Cypermethrin 640,000−210,0000.911
 Cypermethrin 3,200−6700.978 Gautara and Gupta, 2008 [55]
 Cypermethrin 2,200−3600.956
 Cypermethrin 1,900−2800.991
 Cypermethrin 1,800−2100.962
 Cypermethrin 2,500−5200.978
 Cypermethrin 2,400−4600.983

Pimephales  promelas
 2-Allylphenol 720 (6.58) (Scott and Crossman 1973 [42]) 730 (6.59)32,000−15,0000.915Holcombe et al., 1984 [40]
 4-Tert-butylphenol 6,200−8000.989
 4-Chloro-3-methylphenol 14,000−4,1000.966
 4-Nitrophenol 65,000−18,0000.985
 2,3,4,5-Tetraphenyl 490−400.882
 1,4-Dinitrobenzene 690−600.982

Ictalutrus  punctatus
 1,4-Dinitrobenzene 2900 (8.30)  (Jearld and Brown, 1971 [56]) N/A*** 910−1700.971Holcombe et al., 1984 [40]
 2-Ethoxyethyllacetate 21,000−4,2000.946

Channa  punctatus
 Carbosulfan 2000 (7.60) 
(Nayak et al., 1999 [57])
N/A***1,600−1,0000.830Nwani et al., 2010 [58]
 Glyphosate 41,000−7,4000.769
 Atrazine 63,000−16,0000.958

Cyprinus  carpio
 Dichlorvos 17160 (9.75) 
(Flower, 1925 [48])
N/A***37,000−1,1000.932Das, 2012 [59]
 Dimethoate 1,900−1600.936Singh et al., 2009 [60]

Trichogaster  trichopterus
 Diazinon 1500 (7.31) N/A***40,000−18,0000.989
 Deltamethrin 300−53 0.890Hedayati et al., 2012 [61]

Oncorhynchus  mykiss
 m-Cresol 1,300 
(Scott and Crossman, 1973 [42])
N/A*** 8,000−3,0000.999 Capkin et al., 2010 [62]
 Deltamethrin 4.5−3.40.982Ural and Sağlam, 2005 [63]
 Endosulfan 19−130.987Capkin et al., 2006 [64]

Gambusia  affinis
 m-Cresol 700 
(Krumholz, 1948 [65])
N/A***40,000−5,6000.894Sangli and Kanabur, 2000 [66]

LC50 = lnLT50 + , **calculated from ln NLT50 = / , (8), ***these species had <4 data sets.