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Oreochromis mortimeri (Trewavas, 1966)

Kariba tilapia
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Image of Oreochromis mortimeri (Kariba tilapia)
Oreochromis mortimeri
No image available for this species;
drawing shows typical fish in this Family.

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (peixes com raios nas barbatanas) > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335);  mortimeri: Named for M.A.E. Mortimer, a fish culturist who conducted a great deal of productive fish culture research in Zambia between 1951 and 1965 (Ref. 13337).  More on author: Trewavas.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; gua doce bentopelgico.   Tropical; 10°S - 19°S

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Africa: Middle Zambezi and its tributaries, including Luangwa River (except probably the upper reaches of its tributaries Lunsemfwa and Mulungwishi above the escarpment), Hunyani River and Lake Kariba (Ref. 5166). Introduced to Kipopo and the Lufira River (upper Congo River basin) in Democratic Republic of the Congo (Ref. 1978).

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm 22.0  range ? - ? cm
Max length : 48.0 cm TL macho/indeterminado; (Ref. 5309); peso máx. publicado: 4.1 kg (Ref. 13337); idade máx. registrada: 8 anos (Ref. 2)

Descrição suscinta Morfologia | Morfometria

Espinhos dorsais (total): 16 - 17; Raios dorsais (total): 10-13; Espinhos anais 3; Raios anais : 10 - 12; Vértebras: 29 - 30. Diagnosis: jaws greatly enlarged in mature males; scales in 2-3 rows on cheek; caudal peduncle relatively shorter than in O. mossambicus (Ref. 2). In life greenish grey (Ref. 2), green-blue (Ref. 52307) or grey-blue with a darker spot on each scale (Ref. 2, 52307). Females and immature males often with 1-3 dark mid-lateral blotches (Ref. 2, 52307), which may appear only as the fish dies (Ref. 2). Breeding males: predominantly iridescent blue-green to bronze (Ref. 2, 52307), with iridescent spots on dorsal and caudal fins (Ref. 2), a dorsal fin with a red edge that is not as pronounced as in O. mossambicus, and a narrow (as opposed to wide) red band at posterior end of caudal fin (Ref. 12524, 13337).

Biologia     Glossário (p.ex. epibenthic)

Forms schools (Ref. 2, 54048). Is mainly diurnal; salt-tolerant (Ref. 2). Feeds mainly on (filamentous) algae (Ref. 2, 12524, 13337, 52307, 54048) and diatoms, as well as higher plants (Ref. 2, 52307), dipterous larvae, cladocerans, copepods (Ref. 2), aquatic and terrestrial insects, shrimps, worms (Ref. 12524, 13337, 54048) and mollusks (Ref. 54048). Mouthbrooder; spawns several times per year (Ref. 12524, 13337, 54048).

Ciclo de vida ou comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Nest a saucer-shaped depression with a raised mound in the middle (Ref. 12524, 13337), made by the male in a breeding arena in shallow water down to about 4m (Ref. 54048). Females are lured to these through male courtship displays; female collects eggs in mouth after spawning and fertilisation, and moves off; mouthbrooding females may shoal together and do not feed at this time; eggs hatch after about ten days but remain in the mouth for a further few days; juveniles make short feeding sorties once the storage yolk is used up, but seldom stray far and dart into her mouth when danger threatens; after about another 10 days young are released in warm shallow water in the margins (nursery areas), where they feed independently in small shoals (Ref. 54048). Young released from mouthbrooding female are about 1cm long (Ref. 2). Female returns to the breeding arena where she spawns again (Ref. 54048).

Referência principal Upload your references | Referências | Coordenador : Kullander, Sven O. | Colaboradores

Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)

Status na Lista Vermelha da UICN (Ref. 120744)

  Criticamente em perigo (CR) (A2ae); Date assessed: 01 March 2007

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless





Uso pelos humanos

Pescarias: espcies comerciais; Aquacultura: experimental; peixe esportivo: sim
FAO(Publication : search) | FishSource |

Mais informação

Nomes comuns
Sinônimos
Metabolismo
Predadores
Ecotoxicologia
Reprodução
Maturidade
Desova
Agregação de desova
Fecundidade
Ovos
Desenvolvimento dos ovos
Idade/Tamanho
Crescimento
Peso-comprimento
Comprimento-comprimento
Frequências de comprimento
Morfometria
Morfologia
Larvas
Dinâmica larval
Recrutamento
Abundância
Referências
Aquacultura
Perfil para aquacultura
Estirpes
Genética
Frequências alélicas
Hereditariedade
Doenças
Processamento
Conversão de massa
Colaboradores
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Stamps, Coins Misc.
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Relatórios especiais

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Fontes da internet

Estimativas de algumas propriedades baseadas em modelos

Índice de diversidade filogenética (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01862 (0.00888 - 0.03903), b=3.03 (2.85 - 3.21), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Nível Trófico (Ref. 69278):  2.2   ±0.0 se; Based on diet studies.
Resiliência (Ref. 69278):  médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (tmax=8).
Vulnerabilidade (Ref. 59153):  Moderate vulnerability (39 of 100) .
Categoria de preço (Ref. 80766):   Unknown.