Phenetic and Genetic Variability of Continental and Island Populations of the Freshwater Copepod Mastigodiaptomus ha Cervantes, 2020 (Copepoda): A Case of Dispersal?

The diversity of freshwater zooplankton is still little known in Mexico, particularly in reference to insular zooplankton communities. Diaptomid copepods (Crustacea: Copepoda: Calanoida) are a widespread group worldwide, and Mexico harbours high diaptomid diversity. Based on a recent sampling of fre...

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Bibliographic Details
Published inDiversity (Basel) Vol. 13; no. 6; p. 279
Main Authors Cervantes-Martínez, Adrián, Gutiérrez-Aguirre, Martha Angélica, Suárez-Morales, Eduardo, Jaime, Sarahi
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2021
Subjects
Aquifers
barcoding
Calanoida
Copepoda
diaptomids
Dispersal
Divergence
Endemism
Females
Fresh water
freshwater
Freshwater ecosystems
Gene sequencing
Genetic analysis
Genetic diversity
Genetic variability
insular water bodies
Males
Mastigodiaptomus
Morphology
new record
Population
Population genetics
Populations
Sinkholes
Species
Zooplankton
Canada
Central America
Mexico
United States > US
Cozumel Island
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Summary:The diversity of freshwater zooplankton is still little known in Mexico, particularly in reference to insular zooplankton communities. Diaptomid copepods (Crustacea: Copepoda: Calanoida) are a widespread group worldwide, and Mexico harbours high diaptomid diversity. Based on a recent sampling of freshwater zooplankton on a Caribbean Island of Mexico, we present the first record of a diaptomid copepod from an island freshwater ecosystem. It shows the well-known tendency of Neotropical diaptomids to have restricted distributional patterns and high levels of endemism. The species recorded, Mastigodiaptomus ha (Cervantes-Martínez, 2020) appears to have a restricted distribution in the Yucatan Peninsula (YP), and the island as well. In order to explore potential differences between the island and continental populations of this species, its phenetic and genetic diversity was analysed by performing morphological comparisons and also by exploring differences of the habitat conditions and genetic sequences (CO1 gene). Our analysis revealed a low (average = 0.33%) genetic divergence between both populations; likewise, both the morphology and habitat conditions closely resemble each other in these two populations. The low genetic divergence between the continental and island populations of M. ha suggests an early common origin of the species in the geological history of the YP.
ISSN:1424-2818
1424-2818
DOI:10.3390/d13060279