• Title, Summary, Keyword: Cottidae

Search Result 22, Processing Time 0.038 seconds

Karyotypes of Five species in Odontobutidae and Cottidae of Korea (한국산 동사리과 (Odontobutidae)와 둑중개과 (Cottidae) 5종의 핵형)

  • Park, Gab Man;Song, Ho Bok
    • Korean Journal of Ichthyology
    • /
    • v.18 no.3
    • /
    • pp.155-162
    • /
    • 2006
  • The chromosome numbers of five species in two families of Korea are investigated: Odontobutis platycephala, O. interrupta, and O. obscura in Odontobutidae, and Cottus koreanus and C. hangiongensis in Cottidae. In Odontobutis species, the three species showed the diploid chromosome number, 2n=44 (NF=44) telocentric chromosomes. In Cottus species, the mitotic chromosomes from 24 groups with two chromosomes each indicated that it is a diploid. The karyotype of C. koreanus and C. hangiongensis is 2n=48 and NF=52. These species is the first report on the chromosomes and the karyotype analysis except O. platycephala. Our findings provide cytotaxonomic evidence for the species distinctness of these five species whose descriptions were based primarily on external morphology.

First Record of Icelinus japonicus (Scorpaeniformes: Cottidae) from Korea (서해 중부연안에서 채집된 둑중개과(Cottidae) 한국미기록종, Icelinus japonicus)

  • Kim, Byung-Jik
    • Korean Journal of Ichthyology
    • /
    • v.23 no.4
    • /
    • pp.305-309
    • /
    • 2011
  • Three specimens of a small sculpin, Icelinus japonicus, were collected from the midwestern coastal waters of the Korean Peninsula firstly. The species is characterized by having two ctenoid scale rows extending posterior end of the second dorsal fin along the dorso-lateral surface of the body, pelvic fin with a spine and two soft rays, and teeth on vomer and palatines. A new Korean name, "Du-jul-bil-neul-hoes-dae", is proposed for the species.

First Record of Icelus toyamensis (Scorpaeniformes: Cottidae) from the East Sea, Korea

  • Song, Young Sun;Kim, Jin-Koo;Ryu, Jung-Hwa;Kim, Hyeon-Ju;Kweon, Seon-Man;Choi, Seung-Ho
    • Animal Systematics, Evolution and Diversity
    • /
    • v.28 no.4
    • /
    • pp.304-307
    • /
    • 2012
  • A three specimen of Icelus toyamensis, belonging to Cottidae, Scorpaeniformes, was firstly collected from the East Sea, Korea during 2007-2009. We herein described the species as the first record from Korea on the basis of these specimens. Icelus toyamensis is characterized by the following morphological combinations: spinous scales absent on the base of dorsal fin; small ctenoid scales scattered on body sides; gill rakers are short, tubular, and relatively broad; the uppermost preopercular spine is sharp and simple; dorsal fin rays VIII-IX, 20-21; anal fin soft rays 18-19; pectoral fin rays 18, and vertebrae 40-41. New Korean name of I. toyamensis is proposed as "Min-jul-ga-si-hoet-dae."

New Korean Record of Artediellus fuscimentus (Scorpaeniformes: Cottidae) (한국산 둑중개과 (Cottidae) 어류 1미기록종, Artediellus fuscimentus Nelson, 1986)

  • Shin, Ui Cheol;Park, Jeong-Ho;Kim, Jin-Koo
    • Korean Journal of Ichthyology
    • /
    • v.28 no.3
    • /
    • pp.207-212
    • /
    • 2016
  • Sixteen specimens of Artediellus fuscimentus, belonging to the family Cottidae, were collected from the coastal waters off Samcheok and Donghae, Korea, in December 2010 and February 2015, respectively. The specimens are characterized by four preopercular spines, 12~13 second dorsal fin rays, 10~12 anal fin rays, a first preopercular spine with no minute spine on the inner side, and pectoral fin extending past the origin of the anal fin. We also analyzed 600 base pairs of the mitochondrial DNA cytochrome b sequence to confirm the taxonomic status of the specimens. The sequences of our specimens corresponded completely to those of Japanese A. fuscimentus, but differed from those of A. atlanticus (d=0.057~0.061). We propose the new Korean names "Eom-ji-hoet-dae-sok" for the genus Artediellus and "Eom-ji-hoet-dae" for the species A. fuscimentus.

First Record of Icelus stenosomus(Perciformes: Cottidae) from Korea (동해안에서 채집된 둑중개과 한국미기록종, Icelus stenosomus)

  • Ko, Myeong-Hun;Park, Jong-Young
    • Korean Journal of Ichthyology
    • /
    • v.21 no.1
    • /
    • pp.61-64
    • /
    • 2009
  • Four specimens (114.2~134.2 mm SL) of Icelus stenosomus Andriashev, family Cottidae, were collected from Goseong-gun, Gangwon-do, East Sea of Korea. They were identified based on the following characters : a pair of strong spines on occipital region, distinct row of scales on both dorsal and ventral sides of body, vermiculate white lines on dorsal side of body, and small prickled scales scattered sparsely on the head. We propose a new Korean name for the species as a new Korean name : 'Mu-nui-jul-ga-si-hoet-dae'.

Length-weight Relationships for 11 Fishes Caught by Fish Pots in the Coastal Water off Baekya Island, Korea

  • Yoon, Ho-Seop
    • Korean Journal of Environmental Biology
    • /
    • v.31 no.2
    • /
    • pp.154-157
    • /
    • 2013
  • Length-weight relationships were estimated for 11 fish species caught in Baekya Island, Korea. Samples were caught in depths of <15 m by fish pots between November 2008 and July 2009. The sampling gear, fish pots, is a widely used as commercial fishing gear in shallow waters of the region. The most abundant families were Hexagrammidae (20.7%), Cottidae (18.5%), Tetraodontidae (14.8%) and Scorpaenidae (13.3%). Estimates for parameter b of the length-weight relationship ($W=aL^b$) ranged between 2.454 and 3.361.

Distribution Aspect and Extinction Threat Evaluation of the Endangered Species, Cottus hangiongensis (Pisces: Cottidae) in Korea (멸종위기어류 한둑중개 Cottus hangiongensis(Pisces: Cottidae)의 분포양상 및 멸종위협 평가)

  • Ko, Myeong-Hun;Han, Mee-Sook;Kwan, Sun-Man
    • Korean Journal of Ichthyology
    • /
    • v.30 no.3
    • /
    • pp.155-160
    • /
    • 2018
  • The distribution aspect and extinction threat evaluation of the endangered species, Cottus hangiongensis were investigated from 2011 to 2017 in Korea for this study. The distribution reports of C. hangiongensis were divided into 1954~1985, 1981~2003, 2004~2012, and 2011~2017. The number of habited streams decreased gradually to 30, 24, 10, and 19 streams, respectively. In this study (2011~2017), C. hangiongensis was newly found in two streams (Ayajincheon and Chuksancheon), but 15 streams that appeared in the past are not in this study. The main habitat of C. hangiongensis was the downstream riffle of clean water with fast velocity and cobble-boulder bottoms. Given this evidence as noted for more than a 30% reduction in population after 2003, due to construction wear, river work and the qualitative decline of the habitat, C. hangiongensis is now considered to be Vulnerable (VU A2ac) based on the IUCN Red List categories and criteria.

Genetical identification and morphological description of the larvae and juveniles of Porocottus leptosomus (Pisces: Cottidae) from Korea

  • Shin, Ui Cheol;Jeong, Yeon Kyu;Yoon, Sang Chul;Choi, Kwang Ho;Kim, Jin-Koo
    • Fisheries and aquatic sciences
    • /
    • v.21 no.12
    • /
    • pp.37.1-37.10
    • /
    • 2018
  • The larvae and juveniles of Porocottus leptosomus belonging to the family Cottidae were collected (n = 95, 3.9-16.5 mm in body length, BL) from Busan, Korea, in March 2015. The larvae and juvenile were identified using DNA barcoding as P. leptosomus, and their morphological description was presented in detail. The yolk-sac larvae (3.9-5.6 mm BL) body was slightly compressed, the head was large, the eye was round and large, and the anus was before the middle of the body. The preflexion larvae (5.2-10.0 mm BL) body length drastically increased; caudal fin rays began to occur. The flexion larvae (9.4-11.8 mm BL) notochord flexion started; dorsal, pectoral, and anal fin rays began to occur; pelvic fin buds are seen; they possessed a pair of parietal spine; and a pair of supraocular cirri was first to develop. At 12 mm BL, the notochord was completely flexed. The larva stage (3.9-12.6 mm SL) had the stellate melanophores in the head, isthmus, gut, and tail (along to the ventral midline). During the juvenile stage (11.4-16.5 mm BL), melanophores covered the head and began to form five black bands on the side of the body. The larvae of P. leptosomus spent pelagic life, but moved to the bottom during the juvenile stage. The larvae and juveniles of P. leptosomus differ from other cottid larval fishes by body shape, melanophore head pattern, and spine development. P. leptosomus can be distinguished from Porocottus allisi by morphological development and the occurrence of larval fish: preopercular spine development, melanophore pattern, and caudal fin development.

Synopsis of the Family Cottidae (Pisces : Scorpaeniformes)from Korea (한국산(韓國産) 둑중개과(科)어류(魚類))

  • Kim, Ik-Soo;Youn, Chang-Ho
    • Korean Journal of Ichthyology
    • /
    • v.4 no.1
    • /
    • pp.54-79
    • /
    • 1992
  • Thirty six species belonging to 21 genera in the family Cottidae from Korea are reviewed and provisional keys to species and genera are provided. Synonyms based on Korean references are included for all cottid fishes of korea, and their taxonomic positions and distribution are discussed. Specimens of twenty one species of this family were collected by trawlers from 38 localities during 1989 to 1992. Five cottid species are recorded for the first time in Korea : They are Triglops jordani(Schmidt), Myoxocephalus stelleri Tilesius, Taurocottus bergi Solatov et Pavlenko, Icelus ochotensis Schmidt and Pseudoblennius zonostigma Jordan et Starks. It is noticeable that most cottid fishes of Korea except 3 species are distributed along the northeastern coast at the southern extremity of cold current from the Okhotsk Sea.

  • PDF

Species Composition of Fish Collected in Gill Nets from Youngil Bay, East Sea of Korea (한국 동해 영일만에서 자망으로 채집된 어류 종조성)

  • Hong, Byung-Kyu;Kim, Jin-Koo;Park, Kyeong-Dong;Jeon, Kyeong-Am;Chun, Young-Yull;Hwang, Kang-eok;Kim, Young-Seop;Park, Kie-Young
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.41 no.5
    • /
    • pp.353-362
    • /
    • 2008
  • The fish species composition and variation in the Youngil Bay, East Sea of Korea, were investigated every month from January, 2001, to December, 2002, using gill nets for sample collection. A total of 63 fish species belonging to 31 families under 10 orders, and a total of 40 species belonging to 26 families under 8 orders, were identified in 2001 and 2002, respectively. Of these, the families Pleuronectidae (9 species), Scorpaenidae (8 species) and Cottidae (5 species) were dominant in 2001, whereas Pleuronectidae (4 species), Cottidae (3 species) and Hexagrammidae (3 species) were dominant in 2002. The number of species recovered was the highest in August, 2001 (34 species) and January and September, 2002 (14 species each), and lowest in May, 2001 (6 species) and December, 2002 (5 species). The principal component analysis for each year showed that fish species composition differed over time even within the same sample area. In addition, the relationship between PC scores and temperature showed a positive relationship in 2001, but a negative relationship in 2002.