Use of ephippial morphology to assess richness of anomopods: potentials and pitfalls

By J. Vandekerkhove, S. Declerck, M. Vanhove, L. Brendonck, Erik Jeppesen, José María Conde Porcuna, L. De Meester. 2004

85 citations recorded by the source corpus.

Zooplankton species richness is typically assessed through analysis of active community samples. These samples ought to be collected at many different locations in the lake and at multiple occasions throughout the year so as to cover the spatial and temporal heterogeneity in active community structure. A number of studies have shown that high numbers of species can be retrieved with a limited effort through hatching of dormant eggs isolated from lake sediments. However, dormant eggs of different species differ in their propensities to hatch, resulting in biased assessments of species composition, abundance and richness. In this paper, we explore the potentials and pitfalls of a third method to assess cladoceran species richness. For twenty European lakes, we identified the number of ephippium morphotypes in sediment samples taken on a single occasion. The morphotype richness was well correlated with species richness as assessed through hatching of dormant forms and through analysis of active community samples covering a six month period. However, not all species had a species-specific ephippial morphotype, consequently resulting in an underestimation of true species richness.

Subfields: Ecology, Environmental Chemistry, Oceanography

View Paper: https://www.semanticscholar.org/paper/ddf1e545e14c26caf9c2024438a9d93e61404960

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Citations in the corpus

Hatching of cladoceran resting eggs: temperature and photoperiod (2005, methodology): “Resting eggs were isolated from the sediment by means of the sugar flotation method (Onbé, 1978; Vandekerkhove et al., 2004c) and then incubated in 2-”
Unintentional dispersal of aquatic invertebrates via footwear and motor vehicles in a Mediterranean wetland area (2010, background): “When unhatched invertebrate propagules were encountered in the filtered samples, they were also isolated, counted and identified where literature was available (for Cladocera: FlöXner, 2000; Vandekerckhove et al., 2004; for large branchiopods: Thiéry and Gasc, 1991; Defaye et al., 1998 and for Bryoz”
DNA-based methods in paleolimnology: new opportunities for investigating long-term dynamics of lacustrine biodiversity (2017, background): “to identify the species present within the broader cladoceran assemblage because there are only a few references on the taxonomy of cladoceran ephippia (Vandekerkhove et al. 2004).”
High predation is of key importance for dominance of small-bodied zooplankton in warm shallow lakes: evidence from lakes, fish exclosures and surface sediments (2011, methodology): “We identified (based on Vandekerkhove et al., 2004) and quantified the resting eggs of Daphnia retained on a 140-lm mesh sieve using a binocular microscope.”
Passive external transport of freshwater invertebrates by elephant and other mud-wallowing mammals in an African savannah habitat (2011, background): “literature was available (for Cladocera: Flößner, 2000; Vandekerkhove et al., 2004; for large branchiopods: Brendonck & Coomans, 1994a,b; and for Bryozoa: Tachet et al., 2000).”
Field evidence of dispersal of branchiopods, ostracods and bryozoans by teal (Anas crecca) in the Camargue (southern France) (2009, methodology): “Invertebrate propagules were separated from the residue, counted and identified using available literature (e.g. Vandekerkhove et al., 2004, for ephippia).”
Dispersal of freshwater invertebrates by large terrestrial mammals: a case study with wild boar (Sus scrofa) in Mediterranean wetlands (2008, background): “Vanschoenwinkel et al. (2008) previously reported the absence of wind dispersal when temporary rock pools were wet.”