Molecular evidence for further overlooked species within the Gammarus fossarum complex (Crustacea: Amphipoda)

Weiss, Martina; Macher, Jan Niklas; Seefeldt, Meike Anna; Leese, Florian

doi:10.1007/s10750-013-1658-7

Cited by 93 publications

(133 citation statements)

References 54 publications

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“…At present it is known that G. balcanicus, G. fossarum, G. komareki, G. roeselii, and G. pulex are taxonomically challenging poly/ paraphyletic cryptic species complexes (indicated by "s.l." below) (Scheepmaker 1990;Müller 1998;Hou et al 2011Hou et al , 2013Weiss et al 2013). We are aware that the Romanian populations might represent distinct cryptic lineages, as has been shown for G. balcanicus (Hou et al 2011.…”

Section: Introductionmentioning

confidence: 86%

Zoogeography of epigean freshwater Amphipoda (Crustacea) in Romania: <br />fragmented distributions and wide altitudinal variability

Copilaş‐Ciocianu

Grabowski

Pârvulescu

et al. 2014

Zootaxa

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Inland epigean freshwater amphipods of Romania are diverse and abundant for this region has a favourable geographical position between the Balkans and the Black Sea. Excluding Ponto-Caspian species originating in brackish waters and freshwater subterranean taxa, there are 11 formally recognized epigean freshwater species recorded from this country. They belong to 3 genera, each representing a different family: Gammarus (Gammaridae, 8 species or species complexes), Niphargus (Niphargidae, 2 epigean species) and Synurella (Crangonyctidae, one species). Their large-scale distribution patterns nevertheless remain obscure due to insufficient data, consequently limiting biogeographical interpretations. We provide extensive new data with high resolution distribution maps, thus improving the knowledge of the ranges of these taxa. Gammarus species display substantial altitudinal variability and patchy, fragmented distribution patterns. They occur abundantly, particularly in springs and streams, from lowlands to sub-mountainous and mountainous regions. In the light of recent molecular research, we hypothesize that the complex geomorphological dynamics of the Carpathian region during the Late Tertiary probably contributed to their allopatric distribution pattern. Contrasting with Gammarus, the genera Niphargus and Synurella exhibit low altitudinal variability, broad ecological valences and overlapping distributions, being widespread throughout the lowlands. The current distribution of N. hrabei and N. valachicus seems to be linked to the extent of the Paratethys during the Early Pliocene or Pleistocene. We further discuss the taxonomic validity of two synonymized and one apparently undescribed taxon, and provide an updated pictorial identification key that includes all taxa and forms discussed in our study. The mosaic distribution of epigean freshwater amphipod species in Romania shows that this region is particularly suitable for phylo-and biogeographical analyses of this group.

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Section: Introductionmentioning

confidence: 86%

Zoogeography of epigean freshwater Amphipoda (Crustacea) in Romania: <br />fragmented distributions and wide altitudinal variability

Copilaş‐Ciocianu

Grabowski

Pârvulescu

et al. 2014

Zootaxa

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“…The different LC50s obtained between the two populations could be linked to the presence of different cryptic species (Feckler et al, 2014;Weiss et al, 2014), particular life-history traits specific to each population (e.g. size, reproduction, feeding habits, etc.)…”

Section: Experiments 1: Acute Toxicity Testmentioning

confidence: 99%

Gammarus fossarum (Crustacea, Amphipoda) as a model organism to study the effects of silver nanoparticles

Mehennaoui

Georgantzopoulou

Felten

et al. 2016

Science of The Total Environment

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“…It has been widely reported that mitochondrial cox1 gene can be used as DNA barcode for many species in Arthropoda (Barrett and Hebert 2005;Costa et al 2007;Yang et al 2011;Lv et al 2014), but there are some exceptions (de Waard et al 2011;Bergmann et al 2013;Weiss et al 2014). The 429-bp mitochondrial cox1 fragment selected here is considered to be an appropriate DNA barcode as it performs molecular classification and identification of four Demodex species effectively.…”

Section: Discussionmentioning

confidence: 99%

Molecular identification and phylogenetic study of Demodex caprae

Zhao

Juan

et al. 2014

Parasitol Res

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The DNA barcode has been widely used in species identification and phylogenetic analysis since 2003, but there have been no reports in Demodex. In this study, to obtain an appropriate DNA barcode for Demodex, molecular identification of Demodex caprae based on mitochondrial cox1 was conducted. Firstly, individual adults and eggs of D. caprae were obtained for genomic DNA (gDNA) extraction; Secondly, mitochondrial cox1 fragment was amplified, cloned, and sequenced; Thirdly, cox1 fragments of D. caprae were aligned with those of other Demodex retrieved from GenBank; Finally, the intra- and inter-specific divergences were computed and the phylogenetic trees were reconstructed to analyze phylogenetic relationship in Demodex. Results obtained from seven 429-bp fragments of D. caprae showed that sequence identities were above 99.1% among three adults and four eggs. The intraspecific divergences in D. caprae, Demodex folliculorum, Demodex brevis, and Demodex canis were 0.0-0.9, 0.5-0.9, 0.0-0.2, and 0.0-0.5%, respectively, while the interspecific divergences between D. caprae and D. folliculorum, D. canis, and D. brevis were 20.3-20.9, 21.8-23.0, and 25.0-25.3, respectively. The interspecific divergences were 10 times higher than intraspecific ones, indicating considerable barcoding gap. Furthermore, the phylogenetic trees showed that four Demodex species gathered separately, representing independent species; and Demodex folliculorum gathered with canine Demodex, D. caprae, and D. brevis in sequence. In conclusion, the selected 429-bp mitochondrial cox1 gene is an appropriate DNA barcode for molecular classification, identification, and phylogenetic analysis of Demodex. D. caprae is an independent species and D. folliculorum is closer to D. canis than to D. caprae or D. brevis.

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Molecular evidence for further overlooked species within the Gammarus fossarum complex (Crustacea: Amphipoda)

Cited by 93 publications

References 54 publications

Zoogeography of epigean freshwater Amphipoda (Crustacea) in Romania: <br />fragmented distributions and wide altitudinal variability

Zoogeography of epigean freshwater Amphipoda (Crustacea) in Romania: <br />fragmented distributions and wide altitudinal variability

Gammarus fossarum (Crustacea, Amphipoda) as a model organism to study the effects of silver nanoparticles

Molecular identification and phylogenetic study of Demodex caprae

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