Biology. Following flooding of the river banks (Gambia River), this species builds large elliptical floating nests in densely vegetated swamps at depths of about. Gymnarchus niloticus: osteoglossomorph: Life cycle and reproduction: In contrast , Gymnarchus niloticus (Gymnarchidae) prepares a large floating nest from the. Gymnarchus niloticus: pictures (2). To cite this page: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. The Animal Diversity.
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Osteoglossiformes is one of the most ancient Early Triassic groups of freshwater teleosts and has at least one representative on each continent of the Southern Hemisphere, with the exception of Antarctica. Among its six described families, the Gymnarchidae occurs in many African rivers, including the river Nile, where Gymnarchus niloticus is its only representative.
In this study we provide, for the first time, a comprehensive cytogenetic analysis for G. The simultaneous detection of 18S and 5S ribosomal DNAs showed simple and non-syntenical locations for such sequences, and a Chromomycin A3-positive band was observed, which niloticux co-localized within the 18S ribosomal RNA gene sequences.
Fluorescence in situ hybridization using U2 small nuclear RNA, Rex 6 and some microssatelites as probes showed a scattered distribution among chromosomes. Data from comparative genomic hybridization experiments with some other African Osteoglossiformes niloticsu showed that all these species have an advanced stage of sequence divergence.
The results highlight the evolutionary diversification of osteoglossiform fishes.
Gymnarchus – Wikipedia
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Sign In or Create an Account. Close mobile search navigation Article navigation. First chromosomal analysis in Gymnarchus niloticus Gymnarchidae: Ezequiel A de Oliveira.
Luiz A C Bertollo. Oladele Oladele Ilesanmi Jegede. Marcelo de Bello Cioffi. Abstract Osteoglossiformes is one of the most ancient Early Triassic groups of freshwater teleosts and has at least one representative on each continent of the Southern Hemisphere, gmynarchus the exception of Antarctica.
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