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Genetic evidence fails to discriminate between Macroramphosus gracilis Lowe 1839 and Macroramphosus scolopax Linnaeus 1758 in portuguese waters
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Orientador(es)
Resumo(s)
Fish belonging to the genus Macroramphosus
are distributed throughout the Atlantic, Indian and PaciWc
oceans. Some authors consider this genus monotypic,
Macroramphosus scolopax being the only valid species. Other
authors consider (based on several morphological and ecological
characters) that another species (Macroramphosus
gracilis) exists and occurs frequently in sympatry with the
Wrst one. Intermediate forms are also reported in literature.
In this paper, using the mitochondrial control region and
the nuclear Wrst S7 intron markers, we failed to Wnd genetic
diVerences between individuals considered to belong to
both species as well as the intermediate forms. Our results
suggest that in the northeastern Atlantic, Macroramphosus
is represented by a single species, M. scolopax, with diVerent
morphotypes interbreeding in the sampling areas.
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Citação
Marine Biology, 156, 1733-1737