Molecules and morphology suggest cryptic species diversity and an overall complex taxonomy of fish scale geckos, genus Geckolepis

AbstractThis paper focuses on the species diversity among the Trichostrongylidae Leiper, 1912 (Nematoda: Strongylida), and complexity of the family systematics. Polymorphism (subfamilies: Ostertagiinae, Cooperiinae and Haemonchinae), the presence of cryptic species (genus: Teladorsagia) and hybridization (genera: Cooperia, Haemonchus and Ostertagia) are presented and discussed, considering both morphological and molecular evidence. Some of these phenomena are common, nevertheless not sufficiently understood, which indicates the need for expanding the current state of knowledge thereof. Within the Trichostrongylidae, species distinction supported merely by morphological features is difficult, and requires confirmation by means of molecular methods. The parasitic nematode taxonomy is complicated mainly by the genus Teladorsagia, but complexity may also be expected among other Ostertagiinae (e.g. in the genera Ostertagia and Marshallagia). The data presented here show that the members of the Trichostrongylidae can significantly complicate unambiguous species identification. Hence, it is essential to consider the phenomena mentioned, to gather valid and comparable data on the biodiversity of this family.

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First molecular phylogeny of the circumtropical bivalve family Pinnidae (Mollusca, Bivalvia): Evidence for high levels of cryptic species diversity

Molecular Phylogenetics and Evolution ◽

10.1016/j.ympev.2014.02.008 ◽

2014 ◽

Vol 75 ◽

pp. 11-23 ◽

Cited By ~ 22

Author(s):

Sarah Lemer ◽

Barbara Buge ◽

Amanda Bemis ◽

Gonzalo Giribet

Keyword(s):

Species Diversity ◽

Molecular Phylogeny ◽

Cryptic Species

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Phylogenetic analysis reveals cryptic species diversity within minute intestinal fluke, Stellantchasmus falcatus Onji and Nishio, 1916 (Trematoda, Heterophyidae)

Asian Pacific Journal of Tropical Medicine ◽

10.1016/j.apjtm.2017.01.016 ◽

2017 ◽

Vol 10 (2) ◽

pp. 165-170 ◽

Cited By ~ 2

Author(s):

Chalobol Wongsawad ◽

Nattawadee Nantarat ◽

Pheravut Wongsawad

Keyword(s):

Phylogenetic Analysis ◽

Species Diversity ◽

Cryptic Species

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Revision of the Western Palearctic Meteorini (Hymenoptera, Braconidae), with a molecular characterization of hidden Fennoscandian species diversity

Zootaxa ◽

10.11646/zootaxa.3084.1.1 ◽

2011 ◽

Vol 3084 (1) ◽

pp. 1 ◽

Cited By ~ 18

Author(s):

JULIA STIGENBERG ◽

FREDRIK RONQUIST

Keyword(s):

New Species ◽

Species Diversity ◽

Cryptic Species ◽

Phylogenetic Analyses ◽

Morphological Characters ◽

New Synonyms ◽

Western Palearctic ◽

Palearctic Species ◽

Traditional Approaches

The tribe Meteorini includes two genera, Meteorus and Zele, which are koinobiont endoparasitoids of larval Lepidoptera and Coleoptera. More than 300 species are known, about one fifth of which occur in the Western Palearctic. Here, we revise the Western Palearctic species, based partly on traditional approaches and partly on molecular analysis of recent Swedish and Finnish material. For the analyses of phylogenetic relationships and cryptic species diversity, we coded 17 morphological characters and sequenced two markers, 28S D2 (649 bp) and CO1 (665 bp). More than 1 970 specimens representing 54 species of Meteorus Haliday and 5 species of Zele Curtis were studied; of these, 177 specimens representing 41 species were sequenced. Seven new species are described, all from the Fennoscandian material: Meteorus artocercus sp. nov., M. densipilosus sp. nov., M. eklundi sp. nov., M. longipilosus sp. nov., M. sibyllae sp. nov., M. stenomastax sp. nov., and M. subtilisulcus sp. nov. Four new synonyms are introduced: Z. chlorophthalmus (Spinola 1808), syn. nov. for M. pallidus (Nees 1812), M. punctifrons Thomson 1895, syn. nov. for M. varinervis (Tobias 1986), M. melanostictus Capron 1887, syn. nov for M. monachae (Tobias 1986), and M. tenellus Marshall 1887, syn. nov. for M. boreus (Tobias 1986). Meteorus tenellus is removed from synonymy with M. cinctellus. Sequence analysis indicated the presence of at least 12 additional cryptic species but these cannot be separated morphologically at this point and, therefore, we do not describe them here. The phylogenetic results suggest that Zele should be included within Meteorus but we refrain from formal changes of the generic classification until more comprehensive phylogenetic analyses of the tribe can be completed. A key to the known Western Palearctic species is presented.

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Molecular evidence of cryptic species diversity in the Perinereis nuntia species group (Annelida: Nereididae) with first records of P. nuntia and P. shikueii in southern Japan

Plankton and Benthos Research ◽

10.3800/pbr.14.287 ◽

2019 ◽

Vol 14 (4) ◽

pp. 287-302

Author(s):

Hiroaki Tosuji ◽

Kiho Nishinosono ◽

Hwey-Lian Hsieh ◽

Christopher J. Glasby ◽

Takeru Sakaguchi ◽

...

Keyword(s):

Species Diversity ◽

Cryptic Species ◽

Species Group ◽

Molecular Evidence ◽

Southern Japan ◽

Perinereis Nuntia

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DNA barcoding uncovers cryptic diversity in 50% of deep-sea Antarctic polychaetes

Royal Society Open Science ◽

10.1098/rsos.160432 ◽

2016 ◽

Vol 3 (11) ◽

pp. 160432 ◽

Cited By ~ 31

Author(s):

Madeleine J. Brasier ◽

Helena Wiklund ◽

Lenka Neal ◽

Rachel Jeffreys ◽

Katrin Linse ◽

...

Keyword(s):

Species Diversity ◽

Cryptic Species ◽

Dna Sequences ◽

Cryptic Diversity ◽

Polychaete Species ◽

Total Species Richness ◽

Antarctic Benthos ◽

The Antarctic ◽

Total Species ◽

Insight Into

The Antarctic marine environment is a diverse ecosystem currently experiencing some of the fastest rates of climatic change. The documentation and management of these changes requires accurate estimates of species diversity. Recently, there has been an increased recognition of the abundance and importance of cryptic species, i.e. those that are morphologically identical but genetically distinct. This article presents the largest genetic investigation into the prevalence of cryptic polychaete species within the deep Antarctic benthos to date. We uncover cryptic diversity in 50% of the 15 morphospecies targeted through the comparison of mitochondrial DNA sequences, as well as 10 previously overlooked morphospecies, increasing the total species richness in the sample by 233%. Our ability to describe universal rules for the detection of cryptic species within polychaetes, or normalization to expected number of species based on genetic data is prevented by taxon-specific differences in phylogenetic outputs and genetic variation between and within potential cryptic species. These data provide the foundation for biogeographic and functional analysis that will provide insight into the drivers of species diversity and its role in ecosystem function.

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