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INTRODUCTION
The liparid genus Careproctus Krøyer, 1862 is mostly bathydemersal fishes from deep-sea of the continental slope in the world. This genus is a large taxonomic group, comprising about 115 species and species-rich in the family Liparidae (Chernova et al., 2004; Knudsen and Møller, 2008). The genus includes about 50 species in the North Pacific (Chernova et al., 2004) and 22 in Japan (Nakabo, 2002; Sakurai and Shinohara, 2008; Kai et al., 2011a). However, only two species, C. rastrinus Gilbert and Burke, 1912 and C. notosaikaiensis Kai, Ikeguchi and Nakabo, 2011 have been recorded from Korea (Kim et al., 2001; Ji et al., 2012).
The family Liparidae has been reviewed by many au- thors, e.g., Burke (1930), Kido (1988), Andriashev and Stein (1998) and Chernova et al. (2004). Especially, Kido (1988) described about 18 species of Careproctus morph- ologically from Japan and subsequently, several new species have been reported in North Pacific (Imamura and Nobetsu, 2002; Orr and Maslenikov, 2007; Sakurai and Shinohara, 2008; Kai et al., 2011a). In addition, Knu- dsen et al. (2007) and Kai et al. (2011b) reported mole- cular phylogeny of five Careproctus spp. and phylogeo-
graphy of Careproctus rastrinus species complex, respec- tively.
During a recent bottom gill-net survey at Donghae-si, Gangwon-do, East Sea, we collected a single specimen of the genus Careproctus at 507 m depth (Fig. 1). This is identified as the Careproctus colletti Gilbert, 1896, and therefore herein described as the first record. Counts and measurements as well as cephalic pore terminology and the count of pectoral fin rays followed those of Andria- shev and Stein (1998) and Orr and Busby (2006), respec- tively. The number of fin rays and vertebrae were count- ed from radiographs prepared by soft X-ray (Hitex Co., Japan). This specimen is presently deposited at Ichthyo- logy Laboratory in Pukyong National University (PKU), Korea.
Careproctus colletti Gilbert, 1896 (New Korean name: Meok-bun-hong-kkom-chi)
(Fig. 1, Table 1)
Careproctus colletti Gilbert, 1896: 442 (type locality:
South of Alaska Peninsula, USA); Burke, 1930: 142 (North Pacific); Kido, 1988: 224, Figs. 52, 53 (key, de- scription, Japan); Nakabo in Nakabo, 2002: 673 (Japan).
Material examined. PKU 6931, 1 specimen, 373.2 mm in standard length (SL), 37�36.94′N, 129�23.51′E, Donghae-si, Gangwon-do, East Sea, 507 m depth, 9 May 2012, Hannaru-ho, gill-net, collected by B.S. Yoon.
First Record of a Snailfish, Careproctus colletti (Scorpaeniformes:
Liparidae) from the East Sea, Korea
By Jeong-Ho Park, Hwan-Sung Ji
1, Byoung-Sun Yoon, Young-Min Choi, Tae-Woo Ban
1and Jin-Koo Kim
1,*
Fisheries Resources and Environment Division, East Sea Fisheries Research Institute, NFRDI, Gangneung, Gangwon-do 210-861, Korea
1Department of Marine Biology, Pukyong National University, 599-1, Daeyeon 3-dong, Nam-gu, Busan 608-737, Korea
ABSTRACT A single specimen (373.2 mm SL) of the snailfish Careproctus colletti was collected by gill-net at Donghae-si, East Sea, Korea. This species is characterized by having the slender and stick- like teeth, lower end of gill opening not reaching to upper origin of pectoral fin, rays of lower part of pectoral fin long, reaching behind anus and margins of dorsal and anal fin dark. We described it as the first record to Korean fish fauna, and proposed the new Korean name “Meok-bun-hong-kkom-chi” for this species.
Key words : Liparidae, Careproctus colletti, new Korean record, East Sea
*Corresponding author: Jin-Koo Kim Tel: 82-51-629-5927, Fax: 82-51-629-5931, E-mail: [email protected]
KOREAN JOURNAL OF ICHTHYOLOGY, Vol. 25, No. 1, 46-49, March 2013 ISSN: 1225-8598
Received: January 23, 2013 Revised: February 22, 2013 Accepted: March 8, 2013
http://www.fishkorea.or.kr
Description. D. 57; A. 49; P
1. 30; C. 9; Vert. 11
++50= = 61; Ribs 2; Gill rakers 12; Cephalic pores 2-6-7-2. Meri- stic and morphometric characters are shown in Table 1.
Body deep, slightly depressed, gradually tapering poste- riorly; dorsal profile of head steep; snout short and blunt;
eye moderately large and located dorsally; mouth small
and terminal; upper jaw protruding and not reaching to anterior of eye; teeth sharp, slender and curved posteri- orly, forming 6~7 oblique rows on both jaws; outer and inner teeth almost equal; nostril single, tubular and locat- ed in front of eye; cephalic pores small and well-devel- oped: nasal pores 2, maxillary pores 6, preoperculoman-
First Record of Careproctus colletti from Korea 47
Fig. 1. Careproctus colletti, PKU 6931, 373.2 mm SL, Donghae-si, Gangwon-do, East Sea, Korea.
Table 1. Comparison of meristic and morphometric characters of Careproctus colletti
Present study (PKU 6931) Gilbert (1896) Burke (1930) Kido (1988)
Number of specimens 1 1 17 32
Standard length (mm) 373.2 84 - 128.0~397.0
In % of Standard length
Body depth 32.0 17.9 16.7~27.8 18.9~30.7
Body width 11.9 - - 9.3~15.0
Head length 20.0 22.2 20.8~23.8 16.0~23.8
Predorsal length 25.7 - - -
Preanal length 41.5 - - -
Preanus length 19.7 - - -
Pectoral fin length 17.1 - - -
Caudal fin length 12.7 - - -
In % of Head length
Snout length 38.1 - - 32.2~43.2
Eye diameter 16.5 28.6 20.0~29.4 16.5~25.0
Interorbital width 52.6 - - 42.2~56.0
Upper jaw length 35.6 - - 38.1~48.4
Disc length 18.9 31.3 18.9~31.3 15.0~30.5
Disc width 16.8 - - -
Gill slit length 22.0 - - 15.0~23.7
Length of lower lobe of pectoral fin 108.7 - 83.0~125.0 108.9~175.0
Counts
Dorsal fin rays 57 52 54~57 51~58
Anal fin rays 49 50 49~52 47~52
Caudal fin rays 9 - 8 8~9
Pectoral fin rays 30 28 27~29 25~31
Total vertebrae 61 - - 59~65
Gill rakers 12 - - -
Cephalic pores
Nasal pores 2 - 2 -
Maxillary pores 6 - 6 -
Preoperculomandibular pores 7 - 7 -
Suprabranchial pores 2 2 2 -
dibular pores 7, suprabranchial pores 2; gill opening short and located above pectoral fin; opercular flap rounded;
12 gill rakers short; dorsal fin base long; pectoral fin deeply notched, upper lobe with 24 rays and not reach- ing to origin of anal fin; 7 and long lower lobe rays of pectoral fin, reaching to behind the anus; origin of dor- sal fin inserted above middle of pectoral fin; caudal fin narrow and emarginated; sucking disc small and oval;
anus close to disc; skin smooth.
Color of fresh specimen. Body overall pinkish, with faint bands on middle part of body; abdomen blackish;
margins of dorsal, anal and caudal fins black; pectoral fin reddish, with margin of it red; eye almost black.
Color of preserved specimen. Body and head overall light brown; abdomen blackish; pectoral and caudal fins whitish.
Distribution. Donghae-si, East Sea, Korea at 507 m depth (present study), Japan, Okhotsk Sea, Bering Sea and Alaska at 65-1, 350 m (Kido, 1988; Nakabo, 2002).
Remarks. The present specimen belonged to the genus Careproctus based on some morphological characters;
the disk present, nostril single, pseudobranchiae absent and fewer rays of pectoral fin rays than anal fin (Kido, 1988). Subsequently, it was identified as Careproctus colletti by number of fin rays, teeth shape, gill opening location, length of lower part rays at pectoral fin (Kido, 1988; Nakabo, 2002). Meristic and morphometric charac- ters of the present specimen agree well with previous descriptions given by Gilbert (1896), Burke (1930) and Kido (1988) (Table 1). However, body depth among mor- phometric characters of our specimen was slightly high- er than that of Kido’s samples (32.0 vs. 18.9~30.7), may be due to the abdomen expansion and soft body (Fig. 1).
C. colletti is similar to C. roseofuscus Gilbert and Burke, 1912, of North Pacific in meristic characters, however, it is distinguishable from the latter in having a long fila- mentous soft rays of lower part of pectoral fin (vs. short in C. roseofuscus) (Nakabo, 2002). This species differs from C. rastrinus in Korea by gill opening location (lower end of gill opening not reaching to upper origin of pec- toral fin vs. reaching in C. rastrinus). In addition, this species is distinguished from C. notosaikaiensis known from Korea and Japan recently by teeth shape (slender and simple teeth vs. tribed in C. notosaikaiensis), number of dorsal (57 vs. 52), caudal (9 vs. 10), pectoral (30 vs.
35~37) fin rays and gill rakers (12 vs. 8) (Ji et al., 2012).
We herein propose a new Korean name, “Meok-bun- hong-kkom-chi” for this species.
ACKNOWLEDGMENTS
This study was funded by a grant from National Fish- eries Research and Development Institute (NFRDI) (No:
RP-2013-FR-003), Korea.
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First Record of Careproctus colletti from Korea 49
한국산 꼼치과(Lipardae) 어류 1 미기록종, Careproctus colletti
박정호∙지환성1∙윤병선∙최영민∙반태우1∙김진구1
국립수산과학원 동해수산연구소, 1부경대학교 자원생물학과
