Demographic responses of selected rotifers (Rotifera) and cladocerans (Cladocera) fed toxic Microcystis aeruginosa (Cyanobacteria)
Por:
Perez-Morales, Alfredo, Sarma, S. S. S., Nandini, S., Alberto Espinosa-Rodriguez, Cristian, Rivera-De la Parra, Ligia
Publicada:
1 abr 2020
Resumen:
Tropical waterbodies contain several species of toxic cyanobacteria
including Microcystis, which adversely affect the somatic growth,
survival and fecundity of zooplankton. Scenedesmus, one of the most
common green algae, is even found in Microcystis-dominated waterbodies.
It is, therefore possible that in natural ponds, rotifers and
cladocerans feed on mixed phytoplankton species containing algae and
cyanobacteria. In this work, we quantified demographic responses of
three rotifer species (Brachionus calycfflonts, ii rubens, and Plationus
patulus), and three cladoceran species (Simocephalus mixtus, Daphnia cf.
mendotae and Moina macrocopa) fed toxic Microcystis aeruginosa only or
mixed with Scenedesmus acutus. The highest population growth for both
rotifer and cladoceran species was observed when Scenedesmus was offered
alone or at 75 % of the diet. Daphnia cf. mendotae and B. rubens were
less affected by Microcystis while Al macrocopa and B. calyciflorus were
more adversely influenced, which was also corroborated by life table
demography. In competition bioassays, D. cf. mendotae was more
efficient, alone or in competition, when fed with 50 or 25% of
Microcystis. This work explains the dynamics of the zooplanktonic
community against gradual changes in phytoplankton due to the presence
of cyanobacteria.
Filiaciones:
Perez-Morales, Alfredo:
Univ Colima, Ctr Univ Invest Oceanol, Carretera Manzanillo Barra de Navidad Km 20, Colima 28860, Mexico
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Fac Estudios Super, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
Sarma, S. S. S.:
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Fac Estudios Super, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
Nandini, S.:
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Fac Estudios Super, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
Alberto Espinosa-Rodriguez, Cristian:
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Fac Estudios Super, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
Univ Nacl Autonoma Mexico, Grp Invest Limnol Trop, UIICSE, Fac Estudios Super, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
Rivera-De la Parra, Ligia:
Univ Nacl Autonoma Mexico, Lab Zool Acuat, Fac Estudios Super, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
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