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Chromidotilapia melaniae and C. nana, two new cichlid species (Perciformes, Cichlidae) from Gabon, Central Africa
Abstract
Chromidotilapia melaniae and C. nana, two new cichlid species, are described from southern Gabon and the southern parts of the Ogooue-River system in Gabon. C. melaniae differs from congeners by a combination of coloration, morphometric and meristic characters. C. nana is the smallest known species of the genus and is distinguished from congeners in having a single row of teeth in both jaws of adults (versus multiple rows). Both new species are pair-bonding, biparental, oviphilic mouthbrooders. Intrageneric relationships of Chromidotilapia in Gabon are discussed.
... After investigation of additional material, he indicated a further subdivision of Nanochromis and Pelvicachromis into two genera. After Greenwood's study, numerous descriptions of novel species and genera were published (Lamboj, 1999(Lamboj, , 2001(Lamboj, , 2002(Lamboj, , 2003(Lamboj, , 2004a(Lamboj, , 2005(Lamboj, , 2009(Lamboj, , 2012(Lamboj, , 2013Lamboj & Snoeks, 2000;Lamboj & Stiassny, 2003;Lamboj & Schelly, 2006), but no phylogenetic studies have been presented that would account for the drastically increased richness of the most speciose group of West-Central African cichlids. Today, chromidotilapiine species richness comprises 10 genera with 48 described and at least 10 undescribed species (Eschmeyer, 2014, AL & UKS, unpubl. ...
... Pending a formal generic revision including a comprehensive phylogenetic assessment of morphological characters, we suggest in the meantime to refer to the group including the type species as ''Chromidotilapia sensu stricto.'' This group is restricted to coastal drainages in Gabon and the Republic of Congo, and includes apart from C. kingsleyae, C. melaniae, C. elongata possibly two other species from the Republic of Congo and Gabon, C. nana and C. mrac (Lamboj, 2002(Lamboj, , 2003. These two other aforementioned species are probably erroneously placed within Chromidotilapia and most likely belong to two undescribed genera. ...
Chromidotilapiine cichlid fishes (Teleostei:
Cichlidae) of West and Central Africa represent the
most species rich ancient African cichlid lineage. In
contrast to the mega-diverse haplotilapiine cichlids
from the African rift valley and crater lakes, very little is
known about their phylogenetic history. Based on
mitochondrial and nuclear DNA sequences and a
representative taxon sampling, we present a first
molecular phylogenetic hypothesis and propose age
estimates for their origin and diversification. Our data
support themonophyly and anOligocene/Eocene origin
of chromidotilapiines. Within chromidotilapiines, two
large, reciprocally monophyletic clades are present and
the enigmatic genus Teleogramma could be phylogenetically
placed for the first time. The two distantly
distributed species Limbochromis robertsi and Chromidotilapia
schoutedeni were identified as sister group to
the Congolian species complexes of Nanochromis and
Congochromis. This unexpected phylogenetic link
between a region in West Africa and the Congo basin
suggests an ancient hydrogeographic corridor spanning
almost half of the African continent. The nearly
complete taxon sampling, good knowledge on species
distribution patterns and well resolved phylogenies
allow the presumption that paleogeographic patterns
rather than ecological factors shaped the ancient divergence
within chromidotilapiines, which predates the
origin of the mega-diverse austrotilapiine lineage,
comprising the majority of African cichlid species.
... Additionally, recent collections in the region of Makokou, and historical material from a nearby locality, have revealed the presence there of a third undescribed Parananochromis species. In the past five years numerous new cichlid taxa have been described from the Lower Guinean icthyofaunal province (see e.g., Lamboj 1999b Lamboj , 2001 Lamboj , 2002 Lamboj , 2003 Lamboj & Snoeks, 2000; Schliewen & Stiassny, 2003), and many more remain to be described. Among these are the three Parananochromis species mentioned above, which we herein describe. ...
Parananochromis axelrodi , P. brevirostris and P. ornatus, three new cichlid species, are described from Gabon and southern Cameroon. Parananochromis axelrodiis a deep-bodied species differing from congeners in a combination of morphometric and meristic characters. Parananochromis brevi- rostris and P. ornatus are distinguished by the presence of four elements in the infraorbital series versus five elements in congeners. Parananochromis brevirostrisdiffers from P. ornatus in lacking chest squamation and in the presence of a weakly-developed pharyngeal pad (versus well-devel- oped pad and scaled chest in P. ornatus).
Une mission d’exploration naturaliste pluridisciplinaire a été organisée par la Fondation Biotope du 26 février au 07 mars 2017 dans le massif du Koumouna-Bouali, au sud-ouest de la ville de Fougamou (Gabon, Province de la Ngounié). L’objectif était d’évaluer l’accessibilité du site et de récolter des données naturalistes préliminaires (principalement amphibiens, reptiles et poissons) en vue d’apprécier la faisabilité et l’intérêt d’organiser une campagne
de missions scientifiques dédiée à l’étude de la biodiversité du massif montagneux. Nous présentons dans cet article les premières données sur les Poissons.
Nous y avons associé quelques observations faites précédemment par l’un d’entre nous (L. Chirio) dans une région voisine du massif. La découverte de plusieurs espèces nouvelles, dont certaines sont probablement endémiques de la région, laisse présager que le Koumouna-Bouali représente un centre important d’endémisme en particulier pour les Cyprinodontoformes.
Part 1 Phylogenetic intrarelationships of the family Chichlidae - an overview, M.L.J.Stiassny: Cichlid placement within the Percomorpha a review of Cichlid intrafamilial relationships concluding remarks Taxonomic appendix. Part 2 Distribition and ecology of the Cichlids of the African Great Lakes, A.J.Ribbink: geographic distribution ecology synthesis. Part 3 Ecology of Cichlids in South American waters and African rivers, R.H.Lowe-McConnell: neotropical Cichlid faunas the Cichlid faunas of African rivers riverine Cichlids associated with African lakes ecology of tilapias rheophilic Cichlids in Africa selection pressures on riverine Cichlids. Part 4 Speciation, P.H.Greenwood: speciation - the products speciation - the process. Part 5 Genetics, I.Kornfield: descriptive genetics genetics of the phenotype molecular systematics. Part 6 functional morphology, K.F.Liem: functional design of the feeding apparatus polyphyletic functional diversification or adaptive radiation?. Part 7 Feeding relationships, K.Yamaoka: feeding behaviour versatility in food and feeding behaviour how to coexist?. Part 8 Mating systems among Cichlid fishes, G.W.Barlow: an account of mating systems conservatism of mating systems factors of mating systems commentary. Part 9 Parental care, M.H.A.Keenleyside: general patterns of parental care behaviourial patterns associated with parental care male-female roles in parental care pair-bond stability during brood care brood-mixing evolution of parental care. Part 10 Ontogenty of behaviour in Cichlids, D.L.G.Noakes: developmental stages and the timing of hatching feeding behaviour social behaviour and the role of impriting parent-young interactions comparative studies. Part 11 Communication, M.Nelissen: what is communication? how do Cichlids communicate? functions of communication. Part 12 Sexual selection and the evolution of the Cichlid fishes of Lake Malawi, Africa, K.R.McKaye: overview of sexual selection theory field studies of Cichlid mate choice Lande's model of sexual selection upon polygamous species coloration and bower form-male characters undergoing sexual selection morphological and genetic evidence on monophyly of bower form evidence of female choice among lekking Cichlids in Lake Malawi. Part 13 The haplochromine Cichlids in Lake Victoria-an assessment of biological and fisheries interests, C.D.N.Barel: the original haplochromine species flock the impact of the Nile perch on the original haplochromine flock fisheries in Lake Victoria and their socioeconomic evaluation. Part 14 Cichlids in aquaculture, R.S.V.Pullin: why culture Cichlids? breeding cultured Cichlids world production of Cichlids in aquaculture aquacultural production appendix.
Preparation of small vertebrates cleared after alcian blue staining of cartilage is facilitated by trypsin digestion. Specimens are fixed in formation, washed, skinned, and eviscerated. After staining in a solution of alcian blue in acetic acid-alcohol for 24-48 hours, they are transferred to water through graded alcohols. Excess alcian blue is removed over a period of up to three weeks by changes every 2-3 days of 1% trypsin in approximately one-third-saturated sodium borate. Bony tissues may be stained after this in a solution of alizarin red S in 0.5% KOH. Specimens are bleached if necessary and dehydrated through graded KOH-glycerine mixtures for storage in glycerine. Since alcohol treatment in addition to formalin fixation does not affect results with this method, it should be useful to researchers who want to study the cartilage or cartilaginous skeletons in museum specimens, which are routinely fixed in formalin and stored in alcohol.
-MRAC 80-54-P-1368, 1 male, 54.6 mm SL; Boumango
- Lac Ezanga
Lac Ezanga. -MRAC 80-54-P-1368, 1 male, 54.6 mm SL; Boumango. -MRAC 84-18-P-16-17, 2 males, 100.9+101.3 mm SL;
2-92.1 mm SL; Okano. -AMNH 227334, 2 males, 1 female, 67.9-93.1 mm SL; Okano. -AMNH 227335, 1 male, 1 female, 2 undet., 47.6-80.9 mm SL; Okano. -AMNH 229522 3 males, 1 female, 67.8-98.5 mm SL
- Lac Ezanga
Lac Ezanga. -AMNH
227333, 5 males 79.2-92.1 mm SL; Okano. -AMNH 227334, 2 males, 1 female, 67.9-93.1
mm SL; Okano. -AMNH 227335, 1 male, 1 female, 2 undet., 47.6-80.9 mm SL; Okano. -AMNH 229522 3 males, 1 female, 67.8-98.5 mm SL; Ogooue. -AMNH 232383, 1 undet.
males, 3 females, 71.2-89.1 mm SL; Congo: Kilemba. -MRAC 78-22-P-1060, 1 undet., 37,9 mm SL; Congo: Route Louombo-Loudima
- Congo
Congo: Loukenene. -MRAC 92-125-P-0595-0599, paratypes, 2 males, 3 females, 71.2-89.1 mm SL; Congo: Kilemba. -MRAC 78-22-P-1060, 1 undet., 37,9 mm SL; Congo:
Route Louombo-Loudima. -MRAC 91-68-P-2139-255, 5 males, 7 females, 3 undet., 19.0-75.5 mm SL; Congo: Moubakou. -MRAC 91-68-P-2264-378, 4 males, 5 females, 3 ex.,
22.5-84.1 mm SL; Congo: Mbamba. -MRAC 91-68-P-2381-382, 1 male, 83.2 mm SL;
female, 1 undet., 28.4+76.0 mm SL; Gabon: Nyanga system. -NMW 94635, 1 female, 68.5 mm SL; Gabon: Nyanga, BMNH 2002.8.8.1-3, 1 male, 2 ex. 40.2-86.6 mm SL ; Gabon: Nyanga system. Chromidotilapia mrac: All from Gabon: AMNH 230356, holotype, male, 73.2 mm SL; Ogooue basin, Mikouma River
- Congo
Congo: Loubomo. -MRAC 91-79-P-334-336, 1 male, 69.4 mm SL; Congo: Kouilou-Niarie. -MRAC-A2-011-P-10-11, 1 female, 1 undet., 28.4+76.0 mm SL; Gabon: Nyanga system. -NMW 94635, 1 female, 68.5 mm SL; Gabon: Nyanga, BMNH 2002.8.8.1-3, 1
male, 2 ex. 40.2-86.6 mm SL ; Gabon: Nyanga system.
Chromidotilapia mrac:
All from Gabon: AMNH 230356, holotype, male, 73.2 mm SL; Ogooue basin, Mikouma River. -AMNH 230357, paratypes, 2 males, 2 females, 1 undet., 44.9-86.3 mm SL;
1898) A revision of the African and Syrian fishes of the family Cichlidae. Part I
- G A Boulenger
Boulenger, G.A. (1898) A revision of the African and Syrian fishes of the family Cichlidae. Part I.
Proceedings of the Zoological Society of London, 1898, 132-152.
The genera of pelmatochromine fishes (Teleostei, Cichlidae). A phylogenetic review
- P H Greenwod
Greenwod, P.H. (1987) The genera of pelmatochromine fishes (Teleostei, Cichlidae). A phylogenetic review. Bulletin of the British Museum Natural History (Zoology), 53, 139-203.
Übersicht über die Formen der Maulbrutpflege bei Cichliden am Beispiel der Gattung Chromidotilapia
- A Lamboj
Lamboj, A. (1998a) Übersicht über die Formen der Maulbrutpflege bei Cichliden am Beispiel der
Gattung Chromidotilapia. In: Greven H. & Riehl, R. (eds.): Verhalten von Aquarienfischen,
ZOOTAXA
Schmettkamp, Bornheim, pp 165-172.
Zur Cichlidenfauna des Biosphärenreservats von Dimonika (Mayombe, Kongo), mit Beschreibung zweier neuer Chromidotilapia-Arten (Teleostei, Perciformes)
- A Lamboj
Lamboj, A. (1998b) Zur Cichlidenfauna des Biosphärenreservats von Dimonika (Mayombe,
Kongo), mit Beschreibung zweier neuer Chromidotilapia-Arten (Teleostei, Perciformes).
Verhndlungen der Gessellschalft für Ichthyologie, 1, 139-156.
Revision des Chromidotilapia batesii/finleyi-Komplexes (Teleostei, Perciformes), mit der Beschreibung einer neuen Gattung und dreier neuer Arten
- A Lamboj
Lamboj, A. (2001) Revision des Chromidotilapia batesii/finleyi-Komplexes (Teleostei, Perciformes), mit der Beschreibung einer neuen Gattung und dreier neuer Arten. Verhndlungen der
Gessellschalft für Ichthyologie, 2, 11-47.
Chromidotilapia mrac, a new species of cichlidae (Teleostei, Perciformes) from Gabon
- A Lamboj
Lamboj, A. (2002) Chromidotilapia mrac, a new species of cichlidae (Teleostei, Perciformes) from
Gabon, Central Africa. Ichthyological Explorations Freshwaters, 13, 251-256.
in press) The species of the genus Chromidotilapia (Pisces: Cichlidae) in Gabon, with a redescription of Chromidotilapia regani (Pellegrin, 1906). Verhndlungen der Gessellschalft für Ichthyologie
- A Lamboj
Lamboj, A. (2003 in press) The species of the genus Chromidotilapia (Pisces: Cichlidae) in Gabon,
with a redescription of Chromidotilapia regani (Pellegrin, 1906). Verhndlungen der Gessellschalft für Ichthyologie.
Afrikanische Cichliden 1
- H Linke
- W Staeck
Linke H. & Staeck, W. (2002) Afrikanische Cichliden 1. Buntbarsche aus Westafrika, 5. edition.
Tetra Verlag GmbH, Bissendorf, Germany, 232pp.
A preliminary contribution to a systematic revision of the genus Pelmatochromis Hubrecht sensu lato (Pisces, Cichlidae)
- D F E Thys Van Den Audenaerde
Thys van den Audenaerde, D.F.E. (1968) A preliminary contribution to a systematic revision of the
genus Pelmatochromis Hubrecht sensu lato (Pisces, Cichlidae). Revue de zoologie et de botanique africaines, 77, 349-391.