S. niloticus 39
S. variabilis 23, 39
T. zillii 39
tilapia habitat 31
L. Naivasha (Kenya)
breeding of S. leucostictus 44-5,134
breeding of T. zillii 44-5
hybrids 56,102
introductions 24,26,36,50,55,86,
91,334
photoperiod practically constant 45
S. leucostictus 24,26,44-5,50,56,
91,102,134
S. spilurus niger 24,26,50,56,102
tilapias in 86
T. zillii 26,44-5,50
L. Nakuru (Kenya)
changes following introduction of
S. alcalicus 101,337
ecological studies 101
introductions 24,55,86,101,337
S. akalicus 101,337
tiiapias in 86
R. Nampongue (Zambia)
kills of T. rendalli 40
L. Nasser (Egypt, man-made)
S. galilaeus replaced S. niloticus 50,87
tiiapias in 86
T. zillii 86
L. Natron (Tanzania)
high salinity 38
pH and alkalinity 40
S. alcalicus 23, 38,40,332
S. alcalicus grahami 38
tiapia habitat 31
Negombo Lagoon (Sri Lanka)
semi-intensive cage culture 223-4
Nemakia mangrove swamp (Madagascar)
S. macrochir 38
R. Niger
tiiapias in 86
R. Nile
S. galilaeus and S. niloticus overlap 21
tilapia habitat 31
tilapias in 86
S. niloticus 17
h Nkugute (Uganda)
introductions summarized 26
S. niloticus x S. esculentus hybrids
102
R. Nyong (Cameroon)
S. mvogoi 23
T. margaritacea 23
Nyumba ya Mungu reservoir (Tanzania,
man-made)
indigenous and introduced species 86,97
R. Ogooub (Gabon)
T. cabme 23
T. ogowensis 23
Okavangu swamp (Botswana)
tuberculosis in S. andersonii and
T. sparrmanii 256
R. Pangani (Tanzania)
ecological studies 97
escape of T. rendalli 24
introductions 25
S. esculentus 97
S. girigan 25
S. jipe 25,97
S. karongae 23
S. pangani 23,97
tiapias in 86
T. rendalli 24,97
Pantabangan reservoir (Philippines)
extensive cage culture 216
L. Paoay (Philippines)
extensive cage culture 216
L. Pinheiro (Brazil)
T. rendalli 30
Rover Cove reservoir (Hong Kong)
breeding of S. mossambicus 46
an exotic community 86,101-2
feeding studies 42-3
growth rates of S. mossambicus 103,
105
S. mossambicus 101-2
L. Poelela (Mozambique)
brackish habitat 38
T. rendalli 38
L. Qarun (Egypt)
breeding of T. zillii 45-6
high and increasing salinity 38-9
reproduction of T. zillii 122
S. aureus 38-9
S. niloticus 38-9
T. zillii 38-9,42,45-6
R. Quanza (Angola)
S. angolensis 23
T. cabme 23
R. Rufigi (Tanzania)
S. urolepis 23,332
L. Rukwa (Tanzania)
dries up 336
dwarf population of S. rukwaensis 99
S. rukwaensis 23,75,99
tilapia habitat 31