char = E;code = 69
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 2;code = 50
char = ,;code = 44
char = 4;code = 52
char = -;code = 45
char = D;code = 68
char = ;code = 32
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = b;code = 98
char = i;code = 105
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = 2;code = 50
char = ,;code = 44
char = 4;code = 52
char = -;code = 45
char = d;code = 100
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = );code = 41
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = u;code = 117
char = m;code = 109
char = p;code = 112
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = m;code = 109
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = j;code = 106
char = u;code = 117
char = v;code = 118
char = e;code = 101
char = n;code = 110
char = i;code = 105
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = G;code = 71
char = e;code = 101
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = g;code = 103
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = r;code = 114
char = a;code = 97
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = Q;code = 81
char = u;code = 117
char = o;code = 111
char = y;code = 121
char = ;code = 32
char = &;code = 38
char = ;code = 32
char = G;code = 71
char = a;code = 97
char = i;code = 105
char = m;code = 109
char = a;code = 97
char = r;code = 114
char = d;code = 100
char = ,;code = 44
char = ;code = 32
char = 1;code = 49
char = 8;code = 56
char = 2;code = 50
char = 4;code = 52
char = );code = 41
char = ;code = 32
char = (;code = 40
char = O;code = 79
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = t;code = 116
char = h;code = 104
char = y;code = 121
char = e;code = 101
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = C;code = 67
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = e;code = 101
char = );code = 41
char = .;code = 46
result sql = Effect of 2,4-D herbicide (2,4-dichlorophenoxyacetic acid) on oxygen consumption and ammonium excretion of juveniles of Geophagus brasiliensis (Quoy & Gaimard, 1824) (Osteichthyes, Cichlidae).
Effect of 2,4-D herbicide (2,4-dichlorophenoxyacetic acid) on oxygen consumption and ammonium excretion of juveniles of Geophagus brasiliensis (Quoy & Gaimard, 1824) (Osteichthyes, Cichlidae).
char = F;code = 70
char = i;code = 105
char = s;code = 115
char = h;code = 104
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = s;code = 115
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = q;code = 113
char = u;code = 117
char = a;code = 97
char = c;code = 99
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = o;code = 111
char = u;code = 117
char = r;code = 114
char = c;code = 99
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = o;code = 111
char = r;code = 114
char = l;code = 108
char = d;code = 100
char = w;code = 119
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = ;code = 32
char = B;code = 66
char = r;code = 114
char = a;code = 97
char = z;code = 122
char = i;code = 105
char = l;code = 108
char = ,;code = 44
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = a;code = 97
char = r;code = 114
char = l;code = 108
char = ;code = 32
char = e;code = 101
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = (;code = 40
char = G;code = 71
char = e;code = 101
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = g;code = 103
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = r;code = 114
char = a;code = 97
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = );code = 41
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = m;code = 109
char = e;code = 101
char = r;code = 114
char = c;code = 99
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = l;code = 108
char = o;code = 111
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = m;code = 109
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = u;code = 117
char = d;code = 100
char = y;code = 121
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = a;code = 97
char = i;code = 105
char = r;code = 114
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = b;code = 98
char = i;code = 105
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = q;code = 113
char = u;code = 117
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = v;code = 118
char = i;code = 105
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = u;code = 117
char = r;code = 114
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = u;code = 117
char = d;code = 100
char = y;code = 121
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = u;code = 117
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = c;code = 99
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 2;code = 50
char = ,;code = 44
char = 4;code = 52
char = -;code = 45
char = d;code = 100
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = (;code = 40
char = 2;code = 50
char = ,;code = 44
char = 4;code = 52
char = -;code = 45
char = D;code = 68
char = );code = 41
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = G;code = 71
char = .;code = 46
char = ;code = 32
char = b;code = 98
char = r;code = 114
char = a;code = 97
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = v;code = 118
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = g;code = 103
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = u;code = 117
char = m;code = 109
char = p;code = 112
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = m;code = 109
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = u;code = 117
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = a;code = 97
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = .;code = 46
char = ;code = 32
char = S;code = 83
char = u;code = 117
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = v;code = 118
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = g;code = 103
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = F;code = 70
char = i;code = 105
char = r;code = 114
char = s;code = 115
char = t;code = 116
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = u;code = 117
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = c;code = 99
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 2;code = 50
char = ,;code = 44
char = 4;code = 52
char = -;code = 45
char = D;code = 68
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = G;code = 71
char = .;code = 46
char = ;code = 32
char = b;code = 98
char = r;code = 114
char = a;code = 97
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = i;code = 105
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result sql = Fish form important fisheries and aquaculture resources worldwide. In Brazil, pearl eartheater (Geophagus brasiliensis) is an important commercially exploited species and is an ideal animal for studying the impairment caused by the effects of herbicides that are often detected in the aquatic environment. The main purpose of the present study was to detect the acute toxicity of 2,4-dichlorophenoxyacetic acid (2,4-D) to G. brasiliensis and investigate its effects on oxygen consumption, ammonium excretion, and the neutral red retention time assay to estimate effects at the cellular level. Such investigations have not been carried out before with this species. First, the acute toxicity of 2,4-D to G. brasiliensis in terms of the 24-, 48-, 72-, and 96-h medium lethal concentration (LC(50)) was calculated to be 45.95, 32.49, 28.28, and 15.16 mg/l, respectively. Furthermore, it was found that exposure of fish to 40 mg/l 2,4-D caused reduction in oxygen consumption and ammonium excretion of 59% and 85%, respectively, in relation to the controls. Mean neutral red retention time assay was significantly lower in comparison with control for organisms exposed to 1, 5, 10, and 40 mg/l 2,4-D. However, the effects at the cellular level were progressive, suggesting that the fish are not able to recover from such increasing effects.

Publication: Ecotoxicology 2009 Jan ;18(1)::55-60. :doi: 10.1007/s10646-008-0256-3.
Publication Date: 2009 Jan
Study Author(s): Barbieri, Edison;
Institution: Instituto de Pesca-APTA-SAA/SP, Caixa Postal 61, Cananeia, 11990-000, São Paulo, Brazil. [email protected]
Shortcut link to this study:
Fish form important fisheries and aquaculture resources worldwide. In Brazil, pearl eartheater (Geophagus brasiliensis) is an important commercially exploited species and is an ideal animal for studying the impairment caused by the effects of herbicides that are often detected in the aquatic environment. The main purpose of the present study was to detect the acute toxicity of 2,4-dichlorophenoxyacetic acid (2,4-D) to G. brasiliensis and investigate its effects on oxygen consumption, ammonium excretion, and the neutral red retention time assay to estimate effects at the cellular level. Such investigations have not been carried out before with this species. First, the acute toxicity of 2,4-D to G. brasiliensis in terms of the 24-, 48-, 72-, and 96-h medium lethal concentration (LC(50)) was calculated to be 45.95, 32.49, 28.28, and 15.16 mg/l, respectively. Furthermore, it was found that exposure of fish to 40 mg/l 2,4-D caused reduction in oxygen consumption and ammonium excretion of 59% and 85%, respectively, in relation to the controls. Mean neutral red retention time assay was significantly lower in comparison with control for organisms exposed to 1, 5, 10, and 40 mg/l 2,4-D. However, the effects at the cellular level were progressive, suggesting that the fish are not able to recover from such increasing effects.
PMID: 18758950

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