Radically different scales of phylogeographic structuring within cryptic species of freshwater shrimp (Atyidae: Caridina)
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The taxonomic feedback loop: symbiosis of morphology and molecules.
Here, we relate the ongoing taxonomic story of a species complex of problematic, cryptic Australian freshwater shrimp (Atyidae; Caridina) to highlight the relative strength and utility of different taxonomic methods in assessing species boundaries. We used popular 'DNA barcode' gene fragments cytochrome c oxidase 1 and 16S ribosomal DNA. We then assessed the morphological attributes of these sp...
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Johnson (1963) attempted to review the 'Caridina nilotica complex' established by Bouvier (1925) and as a result considered several distinct freshwater shrimp species from Indo-West Pacific region as junior synonyms of C. simoni Bouvier, 1904. However, Tiwari and Pillai (1971) indicated the need to clarify the taxonomical status of the many synonyms created by Johnson (1963). Therefore, type an...
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Glyphosate based herbicides, including Roundup , are frequently used in the chemical control of weeds and invading alien plant species in South Africa. These herbicides ultimately get into water courses directly or indirectly through processes such as drifting, leaching, surface runoff and foliar spray of aquatic nuisance plants. Despite their widespread use, no water quality guideline exists t...
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The freshwater shrimp genus, Neocaridina Kubo, 1938, comprises a group of land-locked organisms of the family Atyidae which is distributed throughout Russia, Korea, Japan, China, Taiwan, and Vietnam (Cai 1996, Liang 2004). Unlike the genera Caridina and Macrobrachium with both catadromous and land-locked species, all known species of Neocaridina are land-locked as evidenced by the abbreviated l...
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Ancient Lake Poso on the Indonesian island Sulawesi hosts a highly diverse endemic fauna, including a small species flock of atyid Caridina shrimps, which are characterized by conspicuous colour patterns. We used a mtDNA based molecular phylogeny to test the assumption of a monophyletic origin and intralacustrine radiation of the species flock and to assess the species specificity of some colou...
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