Cryptic speciation in<i>Lecane bulla</i>(Monogononta: Rotifera) in Chihuahuan Desert waters

Walsh, Elizabeth J.; Schröder, Thomas; Wallace, Robert L.; Rico‐Martínez, Roberto

doi:10.1080/03680770.2009.11902298

Cited by 26 publications

(35 citation statements)

References 18 publications

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“…The functional discrimination of guilds offers several advantages: (i) it does not rely on identification to species level, as all species within a genus have the same type of trophi, (ii) it focuses on functional aspects of community associations, and (iii) it is straightforward in its application. For rotifers, resolution to species level is often difficult because of cryptic speciation (Gómez et al, 2002;Suatoni et al, 2006;Walsh et al, 2009) and morphological distortion of specimens in preserved samples (Ruttner-Kolisko, 1974;Obertegger et al, 2006). Therefore, distinction of rotifers based on functional traits seems particularly useful.…”

Section: Introductionmentioning

confidence: 98%

Using the guild ratio to characterize pelagic rotifer communities

et al. 2010

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Ecological research is moving from a species-based to a functional-based approach to better understand the underlying principles that govern community dynamics. Studies of functional-based ecology, however, have been limited for zooplankton and particularly for rotifers. While rotifers show a variety of trophi types and coronal shapes, suggesting the importance of niche differentiation in their feeding strategy, relatively little is known of how this relates to rotifer dynamics. We used the guild ratio (GR 0 , a ratio of raptorial to microphagous species), an index based on a functional trait (i.e. feeding strategy), as a novel approach to rotifer dynamics. We extracted the seasonal GR 0 by using seasonal trend decomposition and investigated similarities between study sites (Lake Washington, USA and Lake Caldonazzo, Italy) and its relation to cladocerans by cross-correlation analysis. Our study indicated that (i) raptorial and microphagous rotifers showed alternating dominance, and that raptorial rotifers and cladocerans had a synchronous pattern, (ii) the seasonal pattern of the GR 0 was consistent across different sampling frequencies, and (iii) the GR 0 was similar in both lakes. We interpreted these patterns as the general strength of the GR 0 : discernment of species-environment relationships and robustness across sampling regimes. The limitations of the GR 0 (i.e. species identity is neglected, simplification of food preferences) can also be seen as its strong point: synthesis of multi-species patterns. In addition, the independence of GR 0 from species-level identification and its potential to make use of datasets with infrequent sampling intervals and low taxon resolution could further support its innovative aspect.

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Section: Introductionmentioning

confidence: 98%

Using the guild ratio to characterize pelagic rotifer communities

et al. 2010

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“…DNA barcoding and analytical tools of DNA taxonomy have offered a very productive approach to uncover cryptic species complexes (Birky, Wolf, Maughan, Herbertson, & Henry, ; Fontaneto et al., ; Fujisawa & Barraclough, ; Hebert et al., ; Leasi et al., ; Puillandre et al., ). DNA taxonomy has indeed revealed that most rotifer taxonomic species analyzed are actually species complexes both in monogonont (Derry, Hebert, & Prepas, ; Leasi et al., ; Mills et al., ; Obertegger, Fontaneto, & Flaim, ; Obertegger et al., ; Schröder & Walsh, ; Walsh, Schröder, Wallace, & Rico‐Martínez, ; Xiang et al., ) and in bdelloids (Fontaneto, Barraclough, Chen, Ricci, & Herniou, ; Fontaneto, Kaya, Herniou, & Barraclough, ; Fontaneto et al., ), with 39 known species complexes identified so far in rotifers (21 monogononta and 18 bdelloidea), a number that is likely to increase (see Fontaneto, for a recent review). DNA barcoding has also been useful as a complementary tool for surveying rotifer biodiversity in larger geographic areas, revealing the presence of several potential cryptic species (García‐ Morales & Elías‐Gutiérrez, ), and for studies on the dispersal and transport detection of invasive species (Briski et al., ; Mergeay et al., ).…”

Section: Introductionmentioning

confidence: 99%

Barcoding rotifer biodiversity in Mediterranean ponds using diapausing egg banks

Moreno

Conde‐Porcuna

Gómez

2017

Ecology and Evolution

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The biodiversity of Mediterranean freshwater bodies is among the most threatened worldwide; therefore, its accurate estimation is an urgent issue. However, traditional methods are likely to underestimate freshwater zooplankton biodiversity due to its high species seasonality and cryptic diversity. We test the value of applying DNA barcoding to diapausing egg banks, in combination with the creation of a reference collection of DNA barcodes using adult individual samples, to characterize rotifer communities. We use monogonont rotifers from two lakes in Doñana National Park and one from Ruidera Natural Park in Spain as models to create a reference collection of DNA barcodes for taxonomically diagnosed adult individuals sampled from the water column, to compare with the sequences obtained from individual eggs from the diapausing egg banks. We apply two different approaches to carry out DNA taxonomy analyses, the generalized mixed Yule coalescent method (GMYC) and the Automatic Barcode Gap Discovery (ABGD), to the obtained sequences and to publicly available rotifer sequences. We obtained a total of 210 new rotifer COI sequences from all three locations (151 diapausing eggs and 59 adults). Both GMYC and ABGD generated the same 35 operational taxonomic units (OTUs), revealing four potential cryptic species. Most sequences obtained from diapausing eggs (85%) clustered with sequences obtained from morphologically diagnosed adults. Our approach, based on a single sediment sample, retrieved estimates of rotifer biodiversity higher than or similar to those of previous studies based on a number of seasonal samples. This study shows that DNA barcoding of diapausing egg banks is an effective aid to characterize rotifer diversity in Mediterranean freshwater bodies.

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“…Another issue that is especially relevant for microevolutionary studies with monogonont rotifers is the existence of cryptic species. Since the discovery of cryptic species in Brachionus plicatilis (Gómez & Serra, 1995;Gómez et al, 2002), the number of rotifer taxa known to be composed of cryptic species has steadily increased during the last decade (Walsh et al, 2009;Obertegger et al, 2012). Furthermore, several studies have provided evidence for substantial ecological segregation among such species (Gabaldón et al, 2015a;Papakostas et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Monogonont rotifers as model systems for the study of micro-evolutionary adaptation and its eco-evolutionary implications

Declerck

Papakostas

2016

Hydrobiologia

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A better understanding of the ability of organisms to adapt to local selection conditions is essential for a better insight in their ecological dynamics. The study of micro-evolutionary adaptation and its eco-evolutionary consequences is challenging for many reasons and the choice of a suitable model organism is particularly important. In this paper, we explain why monogonont rotifers, through their unique combination of traits, are ideal study organisms for this purpose. With a literature review, we demonstrate the capacity of monogonont populations to adapt to a variety of selection conditions (e.g., salinity, food shortage, elemental limitation, and disturbance regimes) within very short-time frames and highlight some potential eco-evolutionary implications. Although monogononts are increasingly used in ecoevolution-oriented studies, their potential is still underappreciated compared to other model organisms. No doubt the high prevalence of cryptic species complexes and the lack of genomic tools form important obstacles that may discourage researchers to work with this group. Here, we argue that none of these difficulties should prevent monogonont rotifers from becoming commonly used model organisms in micro-evolutionary studies and make suggestions for future research.

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Cryptic speciation inLecane bulla(Monogononta: Rotifera) in Chihuahuan Desert waters

Cited by 26 publications

References 18 publications

Using the guild ratio to characterize pelagic rotifer communities

Using the guild ratio to characterize pelagic rotifer communities

Barcoding rotifer biodiversity in Mediterranean ponds using diapausing egg banks

Monogonont rotifers as model systems for the study of micro-evolutionary adaptation and its eco-evolutionary implications

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