Cyclestheria hislopi (Crustacea: Branchiopoda): A group of morphologically cryptic species with origins in the Cretaceous

Schwentner, Martin; Clavier, Simon; Fritsch, Martin; Olesen, Jørgen; Padhye, Sameer M.; Timms, Brian V.; Richter, Stefan

doi:10.1016/j.ympev.2012.11.005

Cited by 59 publications

(37 citation statements)

References 78 publications

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“…A recent detailed phylogenetic study on C. hislopi has revealed that 3 distinct phylogenetic species occur on different continents, and that the populations from India and Southeast Asia form a separate clade (Schwentner et al, 2013). Temperature, pH and salinity did not effectively explain the species distribution perhaps due to the overlapping pH, temperature and salinity ranges observed for all species (Tab.…”

Section: And References Therein) Three Species S Sahyadriensis Ementioning

confidence: 97%

Distribution and assemblages of large branchiopods (Crustacea: Branchiopoda) of northern Western Ghats, India

Padhye

Dahanukar²

2015

J Limnol

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Section: And References Therein) Three Species S Sahyadriensis Ementioning

confidence: 97%

Distribution and assemblages of large branchiopods (Crustacea: Branchiopoda) of northern Western Ghats, India

Padhye

Dahanukar²

2015

J Limnol

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“…All recent morphological, molecular, and combined morphological and molecular studies, on the other hand, have supported the theory that Cladocera is monophyletic [6,26-32]. The sister group to Cladocera is Cyclestherida, which is not monotypic, as generally believed, but consists of a number of species within Cyclestheria [33]. Cladocera and Cyclestherida together form Cladoceromorpha [6,31,32,34,35], whose sister group is Spinicaudata sensu Olesen [29,30].…”

Section: Introductionmentioning

confidence: 92%

Unraveling the origin of Cladocera by identifying heterochrony in the developmental sequences of Branchiopoda

2013

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IntroductionOne of the most interesting riddles within crustaceans is the origin of Cladocera (water fleas). Cladocerans are morphologically diverse and in terms of size and body segmentation differ considerably from other branchiopod taxa (Anostraca, Notostraca, Laevicaudata, Spinicaudata and Cyclestherida). In 1876, the famous zoologist Carl Claus proposed with regard to their origin that cladocerans might have evolved from a precociously maturing larva of a clam shrimp-like ancestor which was able to reproduce at this early stage of development. In order to shed light on this shift in organogenesis and to identify (potential) changes in the chronology of development (heterochrony), we investigated the external and internal development of the ctenopod Penilia avirostris and compared it to development in representatives of Anostraca, Notostraca, Laevicaudata, Spinicaudata and Cyclestherida. The development of the nervous system was investigated using immunohistochemical labeling and confocal microscopy. External morphological development was followed using a scanning electron microscope and confocal microscopy to detect the autofluorescence of the external cuticle.ResultsIn Anostraca, Notostraca, Laevicaudata and Spinicaudata development is indirect and a free-swimming nauplius hatches from resting eggs. In contrast, development in Cyclestherida and Cladocera, in which non-swimming embryo-like larvae hatch from subitaneous eggs (without a resting phase) is defined herein as pseudo-direct and differs considerably from that of the other groups. Both external and internal development in Anostraca, Notostraca, Laevicaudata and Spinicaudata is directed from anterior to posterior, whereas in Cyclestherida and Cladocera differentiation is more synchronous.ConclusionsIn this study, developmental sequences from representatives of all branchiopod taxa are compared and analyzed using a Parsimov event-pairing approach. The analysis reveals clear evolutionary transformations towards Cladocera and the node of Cladoceromorpha which correspond to distinct heterochronous signals and indicate that the evolution of Cladocera was a stepwise process. A switch from a strategy of indirect development to one of pseudo-direct development was followed by a shift in a number of morphological events to an earlier point in ontogenesis and simultaneously by a reduction in the number of pre-metamorphosis molts. A compression of the larval phase as well as a shortening of the juvenile phase finally leads to a precocious maturation and is considered as a gradual progenetic process.

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“…DNA barcoding has been widely applied in delineating species boundaries, discriminating closely related species of crustaceans and revealing the cryptic diversity (Costa et al, 2007;Schwentner et al, 2013). Within the mitochondrial barcoding framework, there are two criteria for species delimitations: (1) a standard threshold of genetic distance separating intra-and inter-specific variabilities called "barcoding gap"; (2) the recovery of species as reciprocal monophyly on a phylogenetic tree (Wiens and Penkrot, 2002;Hebert et al, 2004).…”

Section: The Potential Utility Of Coi Barcodes For Metapenaeopsis Spementioning

confidence: 99%

DNA barcoding of genus Metapenaeopsis (Decapoda: Penaeidae) and molecular phylogeny inferred from mitochondrial and nuclear DNA sequences

Cheng

Sha

Liu

2015

Biochemical Systematics and Ecology

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Cyclestheria hislopi (Crustacea: Branchiopoda): A group of morphologically cryptic species with origins in the Cretaceous

Cited by 59 publications

References 78 publications

Distribution and assemblages of large branchiopods (Crustacea: Branchiopoda) of northern Western Ghats, India

Distribution and assemblages of large branchiopods (Crustacea: Branchiopoda) of northern Western Ghats, India

Unraveling the origin of Cladocera by identifying heterochrony in the developmental sequences of Branchiopoda

DNA barcoding of genus Metapenaeopsis (Decapoda: Penaeidae) and molecular phylogeny inferred from mitochondrial and nuclear DNA sequences

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