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Wonchoel Lee

Bio: Wonchoel Lee is an academic researcher from Hanyang University. The author has contributed to research in topics: Harpacticoida & Seta. The author has an hindex of 15, co-authored 130 publications receiving 856 citations. Previous affiliations of Wonchoel Lee include UPRRP College of Natural Sciences & Natural History Museum.


Papers
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Journal ArticleDOI
TL;DR: The results further support the notion that the copepods display significantly different genomes within the same genus, and provide valuable genomic information for further studies on the population genetics and speciation processes within the genus Tigriopus.

86 citations

Journal ArticleDOI
04 Jul 2012-Zootaxa
TL;DR: Despite significantly increasing the number of known species of cladocerans in Korea, it is recognized that further research is needed to complete the picture, and the cosmopolitan taxa need further revision.
Abstract: We studied the cladocerans from 15 different freshwater bodies in south-east of the Korean Peninsula. Twenty species are first records for Korea, viz. 1. Sida ortiva Korovchinsky, 1979; 2. Pseudosida cf. szalayi (Daday, 1898); 3. Scapholeberis kingi Sars, 1888; 4. Simocephalus congener (Koch, 1841); 5. Moinodaphnia macleayi (King, 1853); 6. Ilyocryptus cuneatus Stifter, 1988; 7. Ilyocryptus cf. raridentatus Smirnov, 1989; 8. Ilyocryptus spinifer Herrick, 1882; 9. Macrothrix pennigera Shen, Sung & Chen, 1961; 10. Macrothrix triserialis Brady, 1886; 11. Bosmina (Sinobosmina) fatalis Burckhardt, 1924; 12. Chydorus irinae Smirnov & Sheveleva, 2010; 13. Disparalona ikarus Kotov & Sinev, 2011; 14. Ephemeroporus cf. barroisi (Richard, 1894); 15. Camptocercus uncinatus Smirnov, 1971; 16. Camptocercus vietnamensis Than, 1980; 17. Kurzia (Rostrokurzia) longirostris (Daday, 1898); 18. Leydigia (Neoleydigia) acanthocercoides (Fischer, 1854); 19. Monospilus daedalus Kotov & Sinev, 2011; 20. Nedorchynchotalona chiangi Kotov & Sinev, 2011. Most of them are illustrated and briefly redescribed from newly collected material. We also provide illustrations of four taxa previously recorded from Korea: Sida crystallina (O.F. Muller, 1776); Macrothrix rosea (Jurine, 1820); Bosmina (Bosmina) longirostris (O. F. Muller, 1776) and Disparalona cf. hamata (Birge, 1879). Among the newly recorded taxa, there are six Far East endemics; five tropicopolitan species for which the Amur basin is the northernmost margin of their distribution; four tropicopolitan species for which Korea is presumed to be the northern most area of their distribution; two Palaearctic taxa for which Korea could be the southern most area of their distribution; two cosmopolitan species which need to be revised; and one species widely distributed in Eastern Asia. Despite significantly increasing the number of known species of cladocerans in Korea, we recognize that further research is needed to complete the picture, and the cosmopolitan taxa need further revision.

39 citations

Journal Article
TL;DR: Ce genre Paronychocamptus est considere comme un taxon polyphyletique comprenant cinq ramifications d'un dimorphisme sexuel distinct sur les deux rames des P2-P4, et de la formule setale relativement primitive des palles natatoires.
Abstract: Deux nouvelles espees d'Harpacticoides Laophontidac sont decritcs de sources hydrothermales situees pres des Acores, dans l'Atlantique, et au nord de l'Ile de Pâques, dans le Pacifique. Ces deux especes sont placees dans un genre nouveau. Bathylaophonte, en raison d'un modele complexe de reticulation dorsale sur le cephalothorax et sur les somites libres, d'un dimorphisme sexuel distinct sur les deux rames des P2-P4, et de la formule setale relativement primitive des palles natatoires. L'espece de l'Europe du N-W. Laophonte faroensis, consideree jusqu'iei comme species incerta dans cette amille (Lang. 1948), perd son stafut incertain et est transferee dans le genre Bathylaophonte Le genre Paronychocamptus est considere comme un taxon polyphyletique comprenant cinq ramifications. Ainsi revise. le genre est exelusivement boreal, ne comprenant plus que deux especes europeennes. P. curticaudatas et P. nanus. et deux especes nord-americaines, P. huntsmani et P. wilsoni. Les autres cspeces. P. exignas. P. leuke, P. proprius, P. connexus et P. anomalns. sont redistribuees dans le genre Onychocamptus et trois nouveaux genres. Paronychocamplus est provisoire ment considere comme le taxon le plus proche de Bathylaophonte. L'espece d'eau saumatre P. anomalus, de l'Andhra Pradesh (Indc). est transferec dans le genre Onychovamptus. La synonymie de O. besnardi, du Bresil, et O. vitiospinulosa, de Chine, avec O. mohammed est supprimee et ces especes sont restaurees comme especes valides. La position primitive du genre er ses affinites avec Folioquinpes sont discutees. P. proprius, de Californie, est placee dans un nouveau genre, Psammoplatypus, conjointement avec Klieonychocamptus discipes qui occupait une position isolee dans le genre Klieonychocamptus. Psammoplatypus est situe dans le groupe de genres comprenant Coullia, Phycolaophonte. Hemilaophonte et Robustunguipes. Le groupe exiguas du genre Paronychocamptus, qui comprend P. exigaus, des iles Chatham. et P. connexus, de la Terre de Feu. est elcve au niveau de genre sous le nom de Heteronychocamptus gen. nov. Ce genre est considere comme tres proche de Pilifera. Pseudonychocamptus et Weddellaophonte en raison du dimorphisme sexuel note dans la chetotaxie des enp-1 P3-P4. II existe une similitude indeniable entre P. leuke et l'espece decrite par Griga (1963) sous le nom de Laophonte hrevifurca. Les deux especes (la seconde etant renomec P. grigae sp. nov.) sont placees dans un nouveau genre, Pontophonte, qui est tres proche du groupe nordgaardi nouvellement defini dans le genre Laophonte. Des cles sont donnees pour les especes des genres Paronychocamptus. Onychocamptus et Bathylaophonte gen. nov. La penetration de la famille des Laophontidac dans les biotopes profonds est revisee. Un reexamen des signalements d'antennules a 8 articles chez les femelles de Laophontidae a montre que cela n'etait pas exact.

27 citations

Journal ArticleDOI
TL;DR: The genus Proserpinicaris Jakobi, 1972, as redefined here, is Palaearctic in distribution, with the centre of diversity in southern Europe, and 20 valid members, all of which share a large hyaline spiniform structure on the male fourth leg basis as a synapomorphy.
Abstract: Proserpinicaris young sp. nov., Proserpinicaris wangpi sp. nov. and Proserpinicaris imjin sp. nov. are described from subterranean waters of South Korea. They are short-range endemics, allopatric in distribution and closely related to each other, and to two other Far Eastern congeners. Distinguishing features are limited to the general habitus shape, proportions of the caudal rami and degree of sexual dimorphism. The genus Proserpinicaris Jakobi, 1972, as redefined here, is Palaearctic in distribution, with the centre of diversity in southern Europe, and 20 valid members, all of which share a large hyaline spiniform structure on the male fourth leg basis as a synapomorphy. A key to species is provided. Genera Niponnicaris Jakobi, 1972 and Pannonicaris Jakobi, 1972 are established as its junior subjective synonyms, Lacustricaris Jakobi, 1972 is formally synonymized with Parastenocaris Kessler, 1913, and Parastenocaris lacustris Chappuis, 1958 is designated as incertae sedis in Fontinalicaridinae Schminke, ...

24 citations

Journal ArticleDOI
TL;DR: It is speculated that the present distribution of the brevipes group may be a combination of ancient vicariance and subsequent dispersal, with a possible origin in the Gondwanaland, in the rift valley between Australia and India.
Abstract: Parastenocaris koreana sp. nov. is described based on examination of numerous adult specimens of both sexes from several localities in Korea. Scanning electron micrographs are used to examine intra- and interpopulation variability of micro-characters, in addition to light microscopy. The new species is most closely related to the Japanese P. biwae Miura, 1969, which we redescribe based on newly collected material from the Lake Biwa drainage area. The two species differ in size, relative length of the caudal rami, shape of the anal operculum, shape of the genital double somite, relative length of the inner distal process on the female fifth leg, as well as relative length of the apical setae on the second, third, and fourth legs exopods in both sexes. Detailed examinations of three disjunct populations of P. koreana reveal also some geographical variation, especially in the surface ornamentation of somites, which may indicate some population structuring or even cryptic speciation. Lack of intraspecific variability in the number and position of sensilla on somites, as well as their potential phylogenetic significance, is a novel discovery. Both species examined here belong to the brevipes group, which we redefine to include 20 species from India (including Sri Lanka), Australia, East Asia, Northern Europe, and North America. A key to species of this group is also provided. In order to test the monophyly of the redefined brevipes group with highly disjunct distribution, as well as relationship between different species, a cladistics analysis is performed based on 39 morphological characters and with help of three outgroup taxa. Six equally parsimonious cladograms are generated, all of which show that the ingroup is well defined by at least three synapomorphies. Reconstructed phylogeny questions the previously suggested hypothesis about the origin of this group in South East Asia, with one Australian species showing the most basal position. We speculate that the present distribution of this group may be a combination of ancient vicariance and subsequent dispersal, with a possible origin in the Gondwanaland, in the rift valley between Australia and India.

23 citations


Cited by
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Journal Article
Fumio Tajima1
30 Oct 1989-Genomics
TL;DR: It is suggested that the natural selection against large insertion/deletion is so weak that a large amount of variation is maintained in a population.

11,521 citations

Journal ArticleDOI
TL;DR: Most plasticizers appear to act by interfering with the functioning of various hormone systems, but some phthalates have wider pathways of disruption, and given the sensitivity of some invertebrates, effects assessments are warranted in other invertebrate phyla.
Abstract: This review provides a critical analysis of the biological effects of the most widely used plasticizers, including dibutyl phthalate, diethylhexyl phthalate, dimethyl phthalate, butyl benzyl phthalate and bisphenol A (BPA), on wildlife, with a focus on annelids (both aquatic and terrestrial), molluscs, crustaceans, insects, fish and amphibians. Moreover, the paper provides novel data on the biological effects of some of these plasticizers in invertebrates, fish and amphibians. Phthalates and BPA have been shown to affect reproduction in all studied animal groups, to impair development in crustaceans and amphibians and to induce genetic aberrations. Molluscs, crustaceans and amphibians appear to be especially sensitive to these compounds, and biological effects are observed at environmentally relevant exposures in the low ng l−1 to µg l−1 range. In contrast, most effects in fish (except for disturbance in spermatogenesis) occur at higher concentrations. Most plasticizers appear to act by interfering with the functioning of various hormone systems, but some phthalates have wider pathways of disruption. Effect concentrations of plasticizers in laboratory experiments coincide with measured environmental concentrations, and thus there is a very real potential for effects of these chemicals on some wildlife populations. The most striking gaps in our current knowledge on the impacts of plasticizers on wildlife are the lack of data for long-term exposures to environmentally relevant concentrations and their ecotoxicity when part of complex mixtures. Furthermore, the hazard of plasticizers has been investigated in annelids, molluscs and arthropods only, and given the sensitivity of some invertebrates, effects assessments are warranted in other invertebrate phyla.

697 citations

Journal ArticleDOI
01 Sep 1926-Nature
TL;DR: The Washington Biological Society has just published a reprint at the price of one dollar of the Code ofworms, with the permission of the Commission.
Abstract: DURING this year I have so often been asked how this Code could be obtained that I hasten, with your permission, to announce that the Washington Biological Society has just published a reprint at the price of one dollar. Prof. C. W. Stiles, secretary to the Commission, says: “I would suggest that, if your colleagues wish copies, it would expedite matters to order a number at once”. The address of the Society is at the Bureau of Entomology, Washington, D.C., U.S.A.

525 citations

Journal ArticleDOI
TL;DR: The combination of uses as a whole-animal bioassay and gene expression studies indicate that Tigriopus may serve as an excellent tool to evaluate the impacts of marine pollution throughout the coastal region.

322 citations