An analysis of species boundaries and biogeographic patterns in a cryptic species complex: The rotifer—Brachionus plicatilis

Suatoni, Elizabeth; Vicario, Saverio; Rice, Sean H.; Snell, Terry W.; Caccone, Adalgisa

doi:10.1016/j.ympev.2006.04.025

Cited by 169 publications

(182 citation statements)

References 41 publications

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“…The ability of MAPR to produce a gene topology consistent with the cox1 gene trees in Gómez et al (2002) and Suatoni et al (2006) shows its utility as a phylogenetic marker and supports their findings. In the MAPR tree genetic distance (branch length, i.e., substitutions per codon) is much shorter among members of the SS morphotype and among members of the L morphotype than between these two groups, but the difference is less pronounced on the cox1 tree.…”

Section: Discussionsupporting

confidence: 70%

“…2) was consistent with established phylogenetic relationships among Brachionus spp. based on cox1 and ITS (Gómez et al, 2002;Suatoni et al, 2006). In contrast, the Bayesian consensus tree for cox1 had no significant support for relative positions of "Austria," "Nevada," B. manjavacas, and B. plicatilis s.s., and arranged the B. plicatilis clade as ("Austria"(B. plicatilis s.s. ("Nevada", B. manjavacas))), an inaccurate arrangement based on the clades' placement in prior studies (Gómez et al, 2002;Suatoni et al, 7 2006).…”

Section: Resultsmentioning

confidence: 80%

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Molecular evolution of the membrane associated progesterone receptor in the Brachionus plicatilis (Rotifera, Monogononta) species complex

2010

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Many studies have investigated physiological roles of the membrane associated progesterone receptor (MAPR), but little is known of its evolution. Marked variations in response to exogenous progesterone have been reported for four brachionid rotifer species, suggesting differences in progesterone signaling and reception. Here we report sequence variation for the MAPR gene in the Brachionus plicatilis species complex. Phylogenetic analysis of this receptor is compared with relatedness based on cytochrome c oxidase subunit 1 sequences.Nonsynonymous to synonymous site substitution rate ratios, amino acid divergence, and variations in predicted phosphorylation sites are examined to assess evolution of the MAPR among brachionid clades.

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Section: Discussionsupporting

confidence: 70%

Section: Resultsmentioning

confidence: 80%

Molecular evolution of the membrane associated progesterone receptor in the Brachionus plicatilis (Rotifera, Monogononta) species complex

2010

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“…All newly obtained sequences were deposited in GenBank with accession numbers from KU299052 to KU299752. We did not include sequences from clades 15 and 16 of Suatoni et al (2006), as they seem to be outside the species complex, they have never been found again, no voucher or lab cultures exist, and no additional information is available for them.…”

Section: Data Collectionmentioning

confidence: 99%

“…Suatoni et al (2006) suggested the existence of 14-16 species across the three clades, based on DNA sequence data and the high degree of concordance between genealogical and reproductive isolation (based on experimental trials). Supporting this diversity, genetic and phenotypic data were then used to describe two additional species: Brachionus manjavacas Fontaneto, Giordani, Melone & Serra, 2007, within the L type (Fontaneto et al, 2007) and Brachionus koreanus Hwang, Dahms, Park & Lee, 2013 within the SM type (Hwang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Fifteen species in one: deciphering the Brachionus plicatilis species complex (Rotifera, Monogononta) through DNA taxonomy

et al. 2016

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Understanding patterns and processes in biological diversity is a critical task given current and rapid environmental change. Such knowledge is even more essential when the taxa under consideration are important ecological and evolutionary models. One of these cases is the monogonont rotifer cryptic species complex Brachionus plicatilis, which is by far the most extensively studied group of rotifers, is widely used in aquaculture, and is known to host a large amount of unresolved diversity. Here we collate a dataset of previously available and newly generated sequences of COI and ITS1 for 1273 isolates of the B. plicatilis complex and apply three approaches in DNA taxonomy (i.e. ABGD, PTP, and GMYC) to identify and provide support for the existence of 15 species within the complex. We used these results to explore phylogenetic signal in morphometric and ecological traits, and to understand correlation among the traits using phylogenetic comparative models. Our results support niche conservatism for some traits (e.g. body length) and phylogenetic plasticity for others (e.g. genome size).

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“…Cryptic species complexes in rotifers are often inferred based on the mitochondrial COI (Suatoni et al, 2006;Obertegger et al, 2012Obertegger et al, , 2014Leasi et al, 2013;Fontaneto, 2014;Malekzadeh-Viayeh et al, 2014). We extracted DNA from single live individuals with 35 ll of Chelex (InstaGeneMatrix, Bio-Rad, Hercules, CA, USA).…”

Section: Dna Extraction and Amplificationmentioning

confidence: 99%

High diversity in Keratella cochlearis (Rotifera, Monogononta): morphological and genetic evidence

2016

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Rotifers are ubiquitous freshwater animals for which many complexes of cryptic species (i.e. distinct species that are morphologically difficult to distinguish) are described. Keratella cochlearis occurs globally and shows a wide phenotypic diversity indicating the potential presence of a species complex. We sampled lakes of the Trentino-South Tyrol region (Italy) and investigated mitochondrial genetic diversity in K. cochlearis in relation to detailed lorica measurements. We sequenced the mitochondrial cytochrome c oxidase subunit I and used the generalised mixed Yule coalescent approach, Poisson tree process model and automatic barcode gap discovery to delimit mitochondrial groups, associated with putative evolutionary significant units (ESUs). Based on 248 sequences, eight putative ESUs were indicated that could only partially be delimited by lorica morphology. Specifically, several morphological characteristics (i.e. spinelets, bended median ridge, and posterior spine) were found in specimens of different putative ESUs, and thus, these characters seem to be of poor discriminatory value. Furthermore, different putative ESUs of K. cochlearis were found in the same lake. We conclude that the high mitochondrial genetic diversity may be linked to tolerance of K. cochlearis to varying environmental conditions.

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An analysis of species boundaries and biogeographic patterns in a cryptic species complex: The rotifer—Brachionus plicatilis

Cited by 169 publications

References 41 publications

Molecular evolution of the membrane associated progesterone receptor in the Brachionus plicatilis (Rotifera, Monogononta) species complex

Molecular evolution of the membrane associated progesterone receptor in the Brachionus plicatilis (Rotifera, Monogononta) species complex

Fifteen species in one: deciphering the Brachionus plicatilis species complex (Rotifera, Monogononta) through DNA taxonomy

High diversity in Keratella cochlearis (Rotifera, Monogononta): morphological and genetic evidence

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