Integrative taxonomy of freshwater ostracodes (Crustacea: Ostracoda) of the Yucatán Peninsula, implications for paleoenvironmental reconstructions in the northern Neotropical region

Macario-González, Laura; Cohuo, Sergio; Elías‐Gutiérrez, Manuel; Vences, Miguel; Pérez, Liseth; Schwalb, Antje

doi:10.1016/j.jcz.2018.04.002

Cited by 14 publications

(21 citation statements)

References 49 publications

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“…Ostracodes in lake sediment cores have been used to infer past shifts in lake stage and water-column conductivity, temperature, pH, trophic state, and ionic composition (Pérez et al, 2013a(Pérez et al, , 2013bCohuo et al, 2020). Their use in climate and environmental inferences is maximized by combining molecular, morphological, and ecological approaches (Macario-González et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Ecological turnover in neotropical freshwater and terrestrial communities during episodes of abrupt climate change

et al. 2021

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The last 85,000 years were characterized by high climate and environmental variability on the Yucatán Peninsula. Heinrich stadials are examples of abrupt climate transitions that involved shifts in regional temperatures and moisture availability. Thus, they serve as natural experiments to evaluate the contrasting responses of aquatic and terrestrial ecosystems. We used ostracodes and pollen preserved in a 75.9-m-long sediment core (PI-6, ~85 ka) recovered from Lake Petén Itzá, Guatemala, to assess the magnitude and velocity of community responses. Ostracodes are sensitive to changes in water temperature and conductivity. Vegetation responds to shifts in temperature and the ratio of evaporation to precipitation. Ostracodes display larger and more rapid community changes than does vegetation. Heinrich Stadial 5-1 (HS5-1) was cold and dry and is associated with lower ostracode and vegetation species richness and diversity. In contrast, the slightly warmer and dry conditions during HS6 and HS5a are reflected in higher ostracode species richness and diversity. Our paleoecological study revealed the greatest ecological turnover for ostracodes occurred from 62.5 to 51.0 ka; for pollen, it was at the Pleistocene/Holocene transition. Future studies should use various climate and environmental indicators from lake and marine sediment records to further explore late glacial paleoclimate causes and effects in the northern neotropics.

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Section: Introductionmentioning

confidence: 99%

Ecological turnover in neotropical freshwater and terrestrial communities during episodes of abrupt climate change

et al. 2021

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“…It is essential to consider that all the aquatic ecosystems studied are located in a karst aquifer, where the physical-chemical variables are considered homogeneous (Schmitter-Soto et al, 2002), except for electrical conductivity that is considered the only variable that affects the chemistry of water in karst aquifers (Pérez et al, 2011). It is also known that electrical conductivity in zooplankton organisms, such as ostracods, influences their body size, for these tend to be larger when values surpass 1000 µS/cm (Macario-González et al, 2018). In the particular case of Lecane bulla, it was observed that the large morphotype was distributed in aquatic ecosystems with values of electrical conductivity in a range from 0.2 to 1.3 mS/cm (200 to 1,300 µS/ cm).…”

Section: Discussionmentioning

confidence: 99%

Spatial distribution overview of rotifers in the Yucatán peninsula, México

Alvarado-Flores

Arroyo-Castro

Chavez-Flores

et al. 2021

Sustainable Environment

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The spatial distribution of rotifers in the aquatic ecosystems of the Yucatán peninsula is unclear. The peninsula is a karstic platform with heavy anthropogenic activity that presently puts pressure on and increases the fragmentation of aquatic systems. As the distribution of rotifers is unknown in this region, this study was performed to model spatial distribution of rotifers. Based on the analysis of their absence and presence in aquatic systems, using data from specimens collected in the field and bibliographic information from 1997 to 2018, our goal was to provide protection agencies as well as local and regional users with information on the distribution of microorganisms in the aquatic systems. With this material, an 877-record database with was produced. The bioregion outlined is an area in which 45 genera and 140 species of been observed; the study area contains 47.85% of all the rotifer species reported in Mexico. The essential genera in this bioregion are Brachionus with nine species, Keratella with three and Lecane with 44. In these three genera, we observed two morphotypes of rotifers: a small type in the southern zone and a large type in the northern zone.

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“…In this study, the base composition of the COI gene fragment showed 63.0% AT biases and 37.5% GC biases (Table . 5). [42] ; Mexico MF076727 I, Identity; G, Gap; M.S, Matched strand; COI, Cytochrome C oxidase subunit I gene…”

Section: Genomic Dna and Its Amplificationmentioning

confidence: 99%

First record of a seed shrimp (Ostracoda: Podocopida) Cypretta campechensis (Cyprididae) in a perennial lake (Coimbatore, India): Its molecular identification

Kalpana¹,

Bhavan²,

Udayasuriyan³

et al. 2021

Int. J. Fauna Bio. Stud.

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This study represents diversity of zooplankton species in a perennial freshwater lake located in Singanallur (Lat. 10.59° N and Long. 77.88° E) at Coimbatore, Tamil Nadu, India for a period of one year (June, 2017-May, 2018. Fifty three zooplankton species including rotifera-18, cladocera-10, copepoda-13 and ostracoda-12 were observed. The first record of an ostracoda species Cypretta campechensis was observed during summer. This species was recognized according to its morphological characteristics of anterior view, posterior view, dorsal margin, lateral view (triangular shape), maxillular palp, posterior seta, posterior claw, uropodal ramus and hemipenis. This was mass cultured in mixed phytoplankton as feed. The molecular identification was done via analysis of the mitochondrial cytochrome c oxidase subunit I (mt-COI). The gene was amplified with universal primers (LCO1490 and HCO2198), sequenced and authenticated with NCBI GenBank (MN641913). The BLAST showed 100% similarity with C. campechensis of Mexico (MF076727). The sequence showed more number of identical amino acid residues than that of variable amino acid sites. The noticed higher AT biases (62.4-63.0%) than GC biases (36.1-37.5%) indicated that lower abundance of nuclear copies of mt-DNA (NUMTs) genes. The divergence rate was very low between the subjected and retrieved species (0.000-0.290%). The endemism of C. campechensis can be used as a bio-indicator of water pollution status of this lake and may afford an opening to assess its importance in aquaculture production.

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Integrative taxonomy of freshwater ostracodes (Crustacea: Ostracoda) of the Yucatán Peninsula, implications for paleoenvironmental reconstructions in the northern Neotropical region

Cited by 14 publications

References 49 publications

Ecological turnover in neotropical freshwater and terrestrial communities during episodes of abrupt climate change

Ecological turnover in neotropical freshwater and terrestrial communities during episodes of abrupt climate change

Spatial distribution overview of rotifers in the Yucatán peninsula, México

First record of a seed shrimp (Ostracoda: Podocopida) Cypretta campechensis (Cyprididae) in a perennial lake (Coimbatore, India): Its molecular identification

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