Predation by Acanthocyclops americanus (Copepoda: Cyclopoida) in the hypertrophic shallow waterbody, Lake Albufera (Spain): field and laboratory observations
Por:
Sarma S.S.S., Miracle M.R., Nandini S., Vicente E.
Publicada:
1 feb 2019
Ahead of Print:
1 ene 2018
Categoría:
Aquatic science
Resumen:
We quantified the predation of Acanthocyclops americanus from the
shallow Mediterranean lake Albufera, using gut contents from field
collections and laboratory feeding tests. For functional response
studies, we used Brachionus plicatilis (at 6 concentrations, 400-4000
ind. 40ml(-1)) and Diaphanosoma mongolianum (at 2-20 ind. 40ml(-1)).
Copepod feeding rates were also estimated using different proportions of
rotifer prey and lake seston (0-67.5% of seston+ 40 individuals of B.
plicatilis). Prey selection studies were conducted using five
zooplankton species: Brachionus angularis, Brachionus plicatilis,
Keratella tropica, Daphnia magna and Diaphanosoma mongolianum. Gut
contents of field-collected adult Acanthocyclops contained filamentous
algae and cyanobacteria and 16 zooplankton species (Keratella
cochlearis, unspined and spined forms, K. tropica, Brachionus
plicatilis, Brachionus calyciflorus, Brachionus angularis, Brachionus
variabilis, Asplanchna girodi, Polyarthra vulgaris, Synchaeta pectinata,
Lepadella rhomboides, unidentified bdelloids, Alona rectangula, Chydorus
sphaericus, Bosmina longirostris, D. magna, Ceriodaphnia dubia and
copepod nauplii). When fed B. plicatilis or D. mongolianum, female A.
americanus had higher prey consumption rates than males. Increased
proportion of lake seston caused reduced consumption of brachionid prey.
Our data suggest that A. americanus is omnivorous in nature.
Filiaciones:
Sarma S.S.S.:
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, Av. de Los Barrios No.1, FES Iztacala, Tlalnepantla, Edo, De México, Mexico
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, Av. de Los Barrios No.1, FES Iztacala, Tlalnepantla, Edo, De México, CP 54090, Mexico
Miracle M.R.:
Department Microbiologia i Ecologia & ICBiBE Universitat de València, Burjassot, Valencia, Spain
Nandini S.:
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, Av. de Los Barrios No.1, FES Iztacala, Tlalnepantla, Edo, De México, Mexico
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, Av. de Los Barrios No.1, FES Iztacala, Tlalnepantla, Edo, De México, CP 54090, Mexico
Vicente E.:
Department Microbiologia i Ecologia & ICBiBE Universitat de València, Burjassot, Valencia, Spain
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