Population growth potential of rotifers from a high altitude eutrophic waterbody, Madin reservoir (State of Mexico, Mexico): The importance of seasonal sampling
Por:
Martha Moreno-Gutierrez, Rosa, Sarma, S. S. S., Socorro Sobrino-Figueroa, Alma, Nandini, S.
Publicada:
1 ene 2018
Resumen:
To understand the population growth potential of different species of
rotifers in nature, field collections through seasons are essential. We
sampled zooplankton (and measured selected physicochemical variables)
from the Madin reservoir, a high altitude eutrophic urban waterbody from
Mexico, every month for a year. Qualitative analysis of zooplankton
revealed 28 rotifer species and four cladoceran crustaceans plus one
unidentified copepod. Cephalodella catellina (1400 ind L-1). Horaella
thomassoni (550 hid L-1), Conochilus dossuarius (380 ind L-1) and
Filinia Iongiseta (25 ind L-1) had higher peak density than other
rotifers. Based on the concentrations of nitrates and phosphates,
chlorophyll a levels or different diversity indices (e.g., Carlson,
Shannon-Wiener. Pantile and Buck, Ejsmont-Karabin's TSI (Rot)). the
waterbody is eutrophic to hypertrophic, depending on the season. In this
waterbody we observed high densities of Aphanothece sp. which is a toxic
picocyanobacterium. During the blooms of Aphanothece. we also recorded
higher densities of H. thomassoni and C. catellina. Based on the gut
contents we found that both these rotifer species feed on Aphanothece in
this waterbody. This study thus suggests the potential growth of
Horaella, Cephalodella, Conochilus an d Filima in this eutrophic
reservoir containing blooms of Aphanothece.
Filiaciones:
Martha Moreno-Gutierrez, Rosa:
Univ Autonoma Metropolitana, Programa Doctorado Ciencias Biol & Salud, Ave San Rafael Atlixco 186, Mexico City 09340, DF, Mexico
Sarma, S. S. S.:
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Edificio UMF,Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Edo De Mexico, Mexico
Socorro Sobrino-Figueroa, Alma:
Univ Autonoma Metropolitana Iztapalapa, Dept Hidrobiol, Lab Alejandro Villalobos, Ave San Rafael Atlixco 186, Mexico City 09340, DF, Mexico
Nandini, S.:
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Edificio UMF,Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Edo De Mexico, Mexico
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