Article: Hidden or unnoticed? Multiple lines of evidence support the recognition of a new species of Pseudocorynopoma (Characidae: Corynopomini)
Journal of fish biology. 2021 Jan., v. 98, no. 1
2021
Abstract: Species delimitation is a permanent issue in systematics. The increasing recognition of geographically isolated populations as independent lineages allowed by new methods of analysis has inflated the species‐populations dilemma, which involves deciding ... ...
Abstract | Species delimitation is a permanent issue in systematics. The increasing recognition of geographically isolated populations as independent lineages allowed by new methods of analysis has inflated the species‐populations dilemma, which involves deciding whether to consider separate lineages as different species or structured genetic populations. This is commonly observed between fishes of adjacent river basins, with some lineages being considered allopatric sister species and others considered isolated populations or variants of the same species. Pseudocorynopoma doriae is a characid diagnosed from its single congener by the number of anal‐fin rays and sexually dimorphic characters of males, including distinct fin colouration. The authors found variation in the colour pattern between isolated populations previously identified as P. doriae but no variation in scale or fin‐ray counts. They analysed molecular evidence at the population level and morphological differences related to life history (e.g., colour dimorphism related to inseminating behaviour). The results provide compelling evidence for the recognition of a new species of Pseudocorynopoma despite the lack of discrete differences in meristic data. The recognition of the new species is consistent with biogeographical evidence for the long‐term isolation of the respective river drainages and with differences between the ichthyofaunal communities of these rivers. |
---|---|
Keywords | Characidae ; allopatry ; color ; fish ; geographical distribution ; life history ; new species ; rivers ; sexual dimorphism |
Language | English |
Dates of publication | 2021-01 |
Size | p. 219-236. |
Publishing place | Blackwell Publishing Ltd |
Document type | Article |
Note | JOURNAL ARTICLE |
ZDB-ID | 410564-3 |
ISSN | 1095-8649 ; 0022-1112 |
ISSN (online) | 1095-8649 |
ISSN | 0022-1112 |
DOI | 10.1111/jfb.14572 |
Database | NAL-Catalogue (AGRICOLA) |
More links
Kategorien
In stock of ZB MED Bonn / Germany
Z 4814: Show issues | ||||
Z 4814 a: Show issues |
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.
Inter-library loan at ZB MED
Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.