Seasonal Diversity and Morphometric Variations of Rotifers in Relation to Selected Environmental Variables from a Tropical High-Altitude Lake in Mexico
Por:
Gonzalez-Gutierrez, Sergio, Sarma S.S.S., Nandini, S.
Publicada:
1 ago 2023
Resumen:
We studied the species diversity and morphometric variations of rotifers
from a high-altitude water body, the Llano reservoir, in central Mexico
during September 2021 to August 2022. Samples were collected from four
stations in the reservoir every month. During the study period we were
able to identify 54 monogonont rotifer species of which Polyarthra
vulgaris, Lecane closterocerca, Trichocerca porcellus, Lepadella patella
and Keratella cochlearis were numerically the most abundant. Depending
on the season, the total rotifer density varied from 250 to 2450 ind
L-1. Canonical correspondence analysis (CCA) showed that the species of
Trichocerca similis, Keratella cochlearis, Mytilina ventralis and
Scaridium longicaudum were directly related to temperature. Using
rotifer species richness and abundance data, we derived the Shannon
diversity index, saprobic index and rotifer trophic state index. Data on
the geometric morphometrics showed that Keratella cochlearis was found
in two of the three climatic periods of the year (dry and winter), while
Lecane closterocerca and Trichocerca porcellus occurred during the three
climatic seasons (dry, winter and rainy) and formed three distinct
clusters in relation to body size.
Filiaciones:
Gonzalez-Gutierrez, Sergio:
Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico
Univ Nacl Autonoma Mexico, Posgrad Ciencias Mar & Limnol, Ciudad Univ, Mexico City 04510, Mexico
Sarma S.S.S.:
Laboratory of Aquatic Zoology, FES Iztacala, National Autonomous University of Mexico, Campus Iztacala, Av. de Los Barrios No. 1, Tlalnepantla, 54090, Mexico
Nandini, S.:
Laboratory of Aquatic Zoology, FES Iztacala, National Autonomous University of Mexico, Campus Iztacala, Av. de Los Barrios No. 1, Tlalnepantla, 54090, Mexico
Univ Nacl Autonoma Mexico, Lab Aquat Zool, FES Iztacala, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Mexico
gold, Gold
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