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http://cibnor.repositorioinstitucional.mx/jspui/handle/1001/2298| The systematics of the amphidromous shrimp Macrobrachium hobbsi Nates & Villalobos, 1990 (Decapoda: Caridea: Palaemonidae) from the Mexican Pacific slope | |
| HUMBERTO GARCIA VELAZCO Alejandro Manuel Maeda Martínez HORTENCIA OBREGON BARBOZA GOPAL MURUGAN | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| URL: https://academic.oup.com/jcb/article/38/5/586/5052375?searchresult=1 DOI: 10.1093/jcbiol/ruy054 ISSN: 1937-240X | |
| 16S gene, COI gene, Baja California Peninsula, olfersii group, olfersii subgroup, Mexican Pacific slope, phylogenetics | |
| "Six amphidromous species of MacrobrachiumSpence Bate, 1868 have been recorded on the Pacific slope of Mexico, including the two morphologically related M. hobbsi Nates & Villalobos in Villalobos Hiriart & Nates Rodríguez, 1990 and the Atlantic species M. olfersii (Wiegmann, 1836). The hypothesis that the formation of the Isthmus of Panama in the Late Pliocene produced a vicariant event leading to the formation of two groups of Macrobrachium species, one on the Atlantic slope and the other on the Pacific slope, has raised doubts about the amphiamerican occurrence of M. hobbsi and M. olfersii. Recent molecular studies have supported that hypothesis that there are no amphiamerican species of Macrobrachium, but rather amphiamerican species groups. In a previous publication, we proposed that one of the groups occurring along the Mexican slopes is the olfersii group, comprising the digueti subgroup, and the olfersii subgroup represented by M. hobbsi in the Pacific and M. olfersii in the Atlantic. We reviewed the systematics of the olfersii subgroup from the Pacific slope by analyzing individuals obtained from 104 sites in 44 drainage basins in nine Mexican states. Morphological and molecular genetic analyses with newly generated fragments of the mitochondrial genes 16S (470 bp) and COI (542 bp) confirm that, in the olfersii subgroup, only one morphologically plastic species, M. hobbsi, occurs on the Mexican Pacific slope. It is the most common species of Macrobrachium on this slope and is genetically different from the M. olfersii Atlantic populations. The results also indicate that disjunct populations of the Baja California Peninsula and the mainland belong to the same genetic lineage." | |
| Oxford University Press | |
| 2018 | |
| Artículo | |
| Journal of Crustacean Biology | |
| Inglés | |
| GENÉTICA ANIMAL | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
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