• Animal Systematics, Evolution and Diversity
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• v.19 no.2
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• pp.237-244
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• 2003

Two epistylid peritrichous ciliates collected from the littoral aquatic plants at pond in a suburb of Ulsan, Korea were identified as Epistylis plicatilis Ehrenberg, 1831 and E. hentscheli Kahl, 1935. The description was based on the observation of living specimens and protargol impregnated specimens. This study is about redescription compared with original description. These species have not been reported in Korea and their characteristics are as follows: E. plicatilis is thin, long funnel form and has compact stalk, while E. hentscheli is unsymmetrical bell form and has hollow stalk.

• Animal Systematics, Evolution and Diversity
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• v.9 no.1
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• pp.25-34
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• 1993

Several osteological characters of 45 species belonging to 26 genera and 4 subfamilies in th family Gobiidae were surveyed based on 348 specimens collected from April, 1984 to September, 1992 in the southern part of Korea. The characters include the following: first dorsal-fin pterygiophore formula, vertebral number, epural number, and number of anal-fin pterygiophores anterior to the first haemal spine. The first dorsal-fin pterygiophore formula and epural number showed considerable stability at the generic level, and the apeared useful characters at the species level. Among them, the epural number used formerly to distinguish gobiid subfamilies was considered to be unimpotant taxonomic character in the classification of the subfamily Gobiinae.

• Animal Systematics, Evolution and Diversity
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• v.9 no.1
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• pp.51-59
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• 1993

A gobiid fish, Parioglossus dotui Tomiyama is described from 359 specimens collected at Cheju-do and Pusan, in August 1994 of 1986. This is the first definitive record of the species in the Korean waters. Parioglossus dotui having a small-sized body usually is found swimming in schools. The branchiostegals are 5 in number on each side. It grows up to 40mm in total length. Most of ventral fins are separated and connected with rudimentray membrane. In this species, the lateral line were indistincet or absent. The caudal fin slightly emarginates or truncates in both sexes, with a dark spot at the border of the base. It Inhabits inlet waters and estuaries of rivers. "Deungsul mang-dug" is proposed as Korean name of this species.

• Animal Systematics, Evolution and Diversity
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• v.12 no.3
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• pp.253-264
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• 1996

The ultrastructure of spermatozoa in urodeles and primitive anurans was examined and compared. The spermatozoa of urodeles are characterized by seven plesiomorphies in subacrosomal cone, endounclear canal. perforatorium, ring, marginal filament, undulating membrane and tail axis. Most primitive anuran spermatozoa have no marginal filament, subacrosomal cone and ring structure with the exception of having the subacrosomal cone in Ascaphus and the ring in Discohlossus as compared with those of urodeles. Persistence of the subacrosomal cone and the ring structure is typical in most urodeles and is further linked with the primitive anurans. Therefore, these characters are regarded as symplesiomorphies in urodeles and primitive anurans. The organization of sperm tail, endounclear canal and perforatorium indicates a close phylogenetic relationship between urodeles and the primitives anurans.

• Animal Systematics, Evolution and Diversity
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• v.13 no.4
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• pp.261-270
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• 1997

The megalopae of Pugettia quadridens quadridens (De Haan, 1850), P. quadridens intermedia Sakai, 1938, and P. marissinica Takeda and Miyake, 1972 were obtainded in the laboratory. They are described and illustrated in detail. The megalopal morphology of these three Pugettia species in compared with other Epialtinae megalopae. P. marissinica is quite ditterent from P. quadrides intermedia and P. quadridens quadridens. P. quadridens intermedia and P. quadridens. quadridens are very closely resemble to each other.

• Animal Systematics, Evolution and Diversity
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• v.19 no.2
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• pp.217-225
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• 2003

This study was conducted to ascertain interspecific relationships by analyzing allozyme and soluble proteins of ten species in the Drosophila (Drosophila) to form a part of systematic studies of Korean drosophilids. The results of allozyme and TDE analysis showed that D. (D.) curvispina and D (D.) tsigana had the furthest genetic distance. On the other hand, the genetic distance between D (D.) angularis and D (D.) brachynephros was extremely close. And, ten species of the subgenus Drosophila can be divided into the first group of D. (D.) virilis, D. (D.) tsigana and D. (D.) lacertosa , and the second group consisted of four subgroups; the first subgroup clustered D. (D.) angularis and D (D.) brachynephros, the second subgroup clustered D. (D.) unispina and D. (D.) curvispina, the third subgroup of D (D.) takadai and D. (D.) kuntzei and the fourth subgroup of D. (D.) nigromaculata alone.

• Animal Systematics, Evolution and Diversity
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• v.13 no.4
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• pp.285-290
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• 1997

Two species of Sphyrna lewini (Griffith and Smith, 1834) and Alopias vulpinus (Bonnaterre, 1788) belonging to the Elasmobranchii were collected form the first time from the western coast of Korea. S. lewini is similar to S. zygaena, but differs in some morphological characters: a prominent median indentation on anterior margin of head and free rear tip of second dorsal nearly reaching upper caudal origin. a. vulpinus differs from A. pelagicus in having labial furrows, long terminal lobe and white ventral coloration extending above the pectoral fin bases.

• Animal Systematics, Evolution and Diversity
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• v.31 no.3
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• pp.153-159
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• 2015

A terebellid polychaete identified as Pista shizugawaensis Nishi and Tanaka, 2006, whose species validity has been doubted, is newly reported from the southwest coast of Korea. Korean materials of the present study have several characteristics that agree well with the original description of P. shizugawaensis as follows: two pairs of branchiae on the 2nd and 3rd segments have tufts composed of many dichotomously branched filaments; the nephridial papillae are present on the 6th and 7th segments; the uncini on the anterior and middle thoracic segments possess only long-handled shafts while those on the posterior ones have additional short-handled shafts or lacking shafts; the notosetae are broadly or narrowly winged capillary. The authors examined the taxonomic value of the presence of lateral lobes on the 5th and 6th segments, which has been known as a key characteristic feature of P. shizugawaensis in the classification of Pista species. In the present study, several characteristics such as the shape of notosetae, uncinial shafts in the thoracic segments, and the presence of thin narrow lateral lobes on the 4th segment are suggested as the specific characteristics that help to distinguish P. shizugawaensis from its congeners. A key to Pista species from Korean waters is also provided.

• Animal Systematics, Evolution and Diversity
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• v.31 no.3
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• pp.182-190
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• 2015

Two heterotrichid ciliates, Climacostomum virens (Ehrenberg, 1838) Stein, 1859 from brackish water and freshwater, and Fabrea salina Henneguy, 1890 from a solar saltern, were collected in Korea. They are novelly investigated in Korea by means of live observation, protargol staining and nuclear small subunit (SSU) rRNA gene sequencing. Climacostomum virens is characterized by pouch-like body shape, body length of $200-370{\mu}m$ in vivo, conspicuous cytopharyngeal tube, macronuclei ribbon-like shape, and one to four in number, with or without symbiont algae in cytoplasm, 34-66 somatic kineties, 67-113 adoral zone of membranelles, 8-42 peristomial kineties, 24-37 apical membranelles. SSU rDNA sequence size is 1,591 bp and GC contents 48.52%. Fabrea salina is also characterized by scoop-like body shape with proboscis, body length of $190-240{\mu}m$ in vivo, one to two rod-shaped macronuclei, oval micronuclei, grayish green cortical granules, 104-186 somatic kineties, 4-8 preoral kineties, 7-19 peristomial kineties and fragmented paroral membrane. SSU rDNA sequence size is 1,598 bp and GC contents 47.50%.

• Animal Systematics, Evolution and Diversity
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• v.31 no.3
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• pp.176-181
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• 2015

Biodiversity is plummeting worldwide, and the major causes of such decline include habitat degradation and climate change. While cities do contribute to the negative impact to the environment, they can also serve as strategic centres for conservation programs. Sites qualifying as biogeographic islands within metropolitan Seoul were studied for the occurrence of two hylid species: the endangered Hyla suweonensis and the abundant H. japonica. This study demonstrates that neither habitat diversity nor surface area, but solely the occurrence of aggregated rice paddies is a requisite for H. suweonensis, hypothetically due to its strict breeding requirements. On the contrary, H. japonica occurrence was not affected by any of these factors, and all types of habitats studied were adequate for this species. The presence of an endangered species within the boundaries of one of the most populated metropolises suggests a strong natural resilience, which should be enhanced with appropriate actions. We emphasize that the management plans therein can, and should, be used as the first step in the conservation of H. suweonensis in metropolitan Seoul.