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New Occurrences of Two Penaeid Species (Crustacea: Decapoda: Dendrobranchiata) in Korean Waters
New Occurrences of Two Penaeid Species (Crustacea: Decapoda: Dendrobranchiata) in Korean Waters
Fisheries and aquatic sciences. 2013. Dec, 16(4): 325-329
Copyright ©2013, The Korean Society of Fisheries and Aquatic Science
This is an Open Access article distributed under the terms ofthe Creative Commons Attribution Non-Commercial Licens(http://creativecommons.org/licenses/by-nc/3.0/) whichpermits unrestricted non-commercial use, distribution, and reproduction inany medium, provided the original work is properly cited.
  • Received : August 08, 2013
  • Accepted : September 09, 2013
  • Published : December 30, 2013
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About the Authors
Jung Nyun Kim
Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute, Tongyeong 650-943, Korea
crangonk@korea.kr
Jung Hwa Choi2
Fisheries Resources Management Division, National Fisheries Research and Development Institute, Busan 619-705, Korea
Jeong-Hoon Lee1
Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute, Tongyeong 650-943, Korea
Joo Il Kim1
Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute, Tongyeong 650-943, Korea
Abstract
New occurrences in Korean waters were recorded for two penaeid species: Atypopenaeus stenodactylus (Stimpson, 1860) and Metapenaeopsis toloensis Hall, 1962, which were previously known from the Indo-West Pacific up to southern Japan. The specimens were collected from the southeastern coast of Korea by a shrimp beam trawl. The former is the only known member of the genus Atypopenaeus and the latter is the sixth species of the genus Metapenaeopsis reported in Korea. Morphological descriptions and illustrations with color photographs of the specimens are given. At present, the Korean Penaeidae consist of 20 species in 11 genera. A key to the Korean genera of family Penaeidae is also presented.
Keywords
Introduction
In the family Penaeidae, which includes many commercially important species, 220 species in 32 genera have been reported worldwide (De Grave and Fransen, 2011). Korean penaeid shrimp comprise 18 species in 10 genera (Sakai and Shinomiya, 2011; Kim, 2012). Recently, the number of species has been continuously increasing in Korean waters (Kim et al., 2002, 2003, 2007). During the course of a taxonomic study on decapod crustaceans, two penaeid species were collected: Atypopenaeus stenodactylus (Stimpson, 1860) and Metapenaeopsis toloensis Hall, 1962. Although these species are widely distributed in the Indo-West Pacific, they have never been recorded from Korean waters. The materials examined were collected by a shrimp beam trawl from shallow waters on the southeastern coast of Korea. Morphological descriptions and illustrations with color photographs are given for each species. A key is provided for the identification of Korean penaeid genera.
Materials and Methods
The specimens examined were deposited at the Fisheries Resource Management Division, National Fisheries Research and Development Institute (NFRDI). Postorbital carapace length (CL) is used as a standard length of the specimens for measurements, and the terminology generally follows Pérez Farfante and Kensley (1997).
Results and Discussion
  • Family Penaeidae Refinesque-Schmaltz, 1815
  • GenusAtypopenaeusAlcock, 1905
  • (new Korean name:Eory-bori-saewoo-sok)
- Atypopenaeus stenodactylus (Stimpson, 1860) (new Korean name: Eory-bori-saewoo) (Figs. 1, 3A)
Lager Image
Atypopenaeus stenodactylus (Stimpson, 1860), female (carapace length 15.7 mm) from off Sacheon, southern coast of Korea. (A) Carapace andcephalic appendages, lateral. (B) Left fifth pereopod, lateral. (C) Thelycum, ventral. Scale bars: A, B = 2 mm, C = 1 mm.
Lager Image
Metapenaeopsis toloensis Hall, 1962, female (carapace length 22.2 mm) from off Dadaepo, Busan, southern coast of Korea. (A) Carapace andcephalic appendages, lateral. (B) Abdomen, lateral. (C) Thelycum, ventral. Scale bars: A-C = 2 mm.
- Restricted synonymy
Penaeus stenodactylus Stimpson, 1860: 43 [type locality: Hong Kong].
Penaeus podophthalmus Stimpson, 1860: 43 [type locality: Hong Kong].
Miyadella pedunculata Kubo, 1949: 264, figs. 7N, 23G, H, 58O, 74C, I, 79E, 104, 105 [type locality: Osaka Bay, Japan].
Atypopenaeus stenodactylus – Hall, 1961: 87, pl. 18, fig. 7; 1962: 25, fig. 99, 99a, b; Yu and Chan, 1986: 119, unnumbered fig.; Liu and Zhong, 1988: 182, fig. 114; Hayashi, 1992: 71, figs. 34, 35; Pérez Farfante and Kensley, 1997: 74. Figs. 36, 37B, 38B; De Grave and Fransen, 2011: 213 (list).
- Material examined
Specimens collected off Sacheon, southern coast of Korea at 5-10 m depth by shrimp beam trawl on September 18, 2009: two females (CL 15.7, 16.0 mm), NFRDI-CR 20130531-1.
- Description
Integument almost entirely glabrous, with some pubescence in rostral margin ( Fig. 1 A). Rostrum straight, reaching as far as first segment of antennular peduncle; upper margin straight with seven teeth including three teeth on carapace; epigastric tooth widely separated from first rostral tooth ( Fig. 1 A). Carapace with minute orbital spine, antennal and hepatic spines well defined; branchiocardiac sulcus feeble ( Fig. 1 A). Abdomen with middorsal carina on second to sixth somites. Telson without lateral spine. Antennular flagella longer than carapace length, upper and lower flagella subequal in length ( Fig. 1 A). All pereopods with exopods. First and second pereopods each with ischial spine, second and third pereopods each with basial spine; fifth pereopod slender and very elongate, much longer than preceding ones ( Fig. 1 B). Thelycum with paired flap-like lateral plates posteriorly flanking deep concavity on sternite XIV; median protuberance on sternite XIII elongate, roughly mushroom shaped, bluntly acute anteriorly ( Fig. 1 C).
- Coloration in freshly preserved specimen
Body pale orange, appendages rather deep orange, integument somewhat transparent ( Fig. 3 A).
- Distribution
Indo-West Pacific: India to Malay Archipelago, Hong Kong, Taiwan, southern Japan, New Guinea, and northern Australia; 10-50 m depth (Yu and Chan, 1986). Southeastern coast of Korea, 5-10 m depth in this study.
- Size
Maximum CL 19.0 mm in female (Hayashi, 1992).
- Remarks
Korean Penaeidae includes 10 genera, Batepenaeopsis, Fenneropenaeus, Marsupenaeus, Melicertus, Metapenaeopsis, Metapenaeus, Mierspenaeopsis, Parapenaeus, Penaeus
Lager Image
Two penaeid shrimps from southern coast of Korea. (A) Atypopenaeusstenodactylus (Stimpson, 1860), female (carapace length 15.7mm) from off Sacheon. (B) Metapenaeopsis toloensis Hall, 1962, female(carapace length 22.2 mm) from off Dadaepo, Busan.
and Trachysalambria (Sakai and Shinomiya, 2011; Kim, 2012). Atypopenaeus stenodactylus is the first representative of the genus from Korea. The genus Atypopenaeus is distinguished from the preceding 10 genera by the following combination of characteristics: 1) rostrum usually armed with dorsal teeth only; 2) carapace lacking longitudinal sutures; 3) telson without pair of subapical spines; 4) exopods present on all pereopods or absent from four posterior pairs; and 5) second pereopod armed with ischial spine. Atypopenaeus is represented by five species, occurring mainly in temperate and tropical regions in the world. In East Asian waters, only A. stenodactylus has been reported.
Genus Metapenaeopsis Bouvier, 1905
- Metapenaeopsis toloensis Hall, 1962 (new Korean name: Nam-bang-kkal-kkal-saewoo) (Figs. 2, 3B)
- Restricted synonymy
Metapenaeopsis tolœnsis Hall, 1962: 33, fig. 119, 119a-d [type locality: central part of South China Sea, 6°13´N 107°49’E, 40 fathoms; 5°51´N 107°53´E, 38 fathoms].
Metapenaeopsis toloensis – Racek and Dall, 1965: 19 (in key), 28 (in table); Motoh and Buri, 1984: 77, figs. 52, 53, 54C; Liu and Zhong, 1988: 230, fig. 140; Hayashi, 1992: 92, figs. 42d, 45e, 46e; Crosnier, 1994: 301, figs. 29, 30 (full synonymy); Pérez Farfante and Kensley, 1997: 108 (list); De Grave and Fransen, 2011: 222 (list).
- Material examined
Specimen collected off Dadaepo, Busan, southern coast of Korea at 24-28 m depth by shrimp beam trawl on August 3, 2010: one female (CL 22.2 mm), NFRDI-CR 20130531-2.
- Description
Body tomentous ( Fig. 2 A and 2B). Rostrum directed slightly upward, reaching distal end of third antenular segment; dorsal margin with seven teeth, distal one minute; epigastric tooth conspicuously separated from first rostral tooth ( Fig. 2 A). Carapace with small orbital, moderately developed antennal, pterygostomian, hepatic spines; posteroventral part with 15 stridulating ridges ( Fig. 2 A). Abdomen mid-dorsally carinated from posterior half of second to sixth somites, that of third somite slightly grooved dorsally, those of third and fourth somites incised posteriorly ( Fig. 2 B). Telson armed with three pairs of movable and one pair of fixed spines in distal half. Thelycum with transverse plate on sternite XIV concave medially, lateral margins expanding anteriorly; anterior margin of median plate on sternite XIII slightly convex; coxal expanding part of fourth pereopod very large ( Fig. 2 C).
- Coloration in freshly preserved specimen
Body pale brown with many purple-red splotches and dark brown stripes; pereopods and pleopods with purple-red splotches ( Fig. 3 B).
- Distribution
Indo-West Pacific: Arabian Sea, Maldive Islands, Sri Lanka, Bay of Bengal, Andaman Sea, Malay Archipelago to Japan, New Guinea, Australia, Chesterfield Islands; 8-73 m depth (Crosnier, 1994). Southeastern coast of Korea, 24-28 m depth in this study.
- Size
Maximum CL 24.0 mm in female (Hall, 1962).
- Remarks
The genus Metapenaeopsis consists of two species groups, one has stridulating organs on the posteroventral carapace and the other lacks stridulating organs. In Korea, the genus Metapenaeopsis contains five species, M. barbata, M. dalei, M. lata, M. mogiensis mogiensis , and M. provocatoria owstoni (see Kim, 2012). Of these, the only species with stridulating organs is M. barbata. Metapenaeopsis toloensis is close to M. barbata in having stridulating organs. This species is distinguished from M. barbata by its moderately developed pterygostomian spine ( Fig. 2 A) and very large coxal expansion of the fourth pereopod in females ( Fig. 2 C). In M. barbata , the pterygostomian spine is well-developed and the coxal expanding part of the fourth pereopod is moderately large. Additionally, the stridulating organs have 15-20 ridges in M. toloensis , but 18-25 ridges in M. barbata (Hayashi, 1992).
- Key to Korean Penaeidae genera
1. Rostrum armed with dorsal and usually also ventral teeth. Pleurobranchia on somite XIV (last thoracic somite).......2
– Rostrum usually armed with dorsal teeth only. No pleurobranchia on somite XIV .....................................................5
2. Adrostral sulcus and carina long, reaching far beyond epigastric tooth, usually almost to posterior margin of carapace. Gastrofrontal carina present ......................................3
– Adrostral sulcus and carina short, falling distinctly short or extending to about level of epigastric tooth. Gastrofrontal carina absent ......................................................................4
3. Gastrofrontal sulcus not markedly bifid posteriorly. Thelycum with pair of lateral plates on sternite XIV...... Melicertus
– Gastrofrontal sulcus markedly bifid posteriorly. Thelycum with single plate on sternite XIV infolded laterally ...................................................................... Marsupenaeus
4. Hepatic carina absent or, if present, moderately to ill defined ....................................................... Fenneropenaeus
– Hepatic carina prominent ........................................ Penaeus
5. Telson with pair of well developed fixed subapical spines (preceded by lateral movable spines). First segment of antennular peduncle usually bearing ventromesial (parapenaeid) spine ..................................................................6
– Telson without pair of subapical spines, usually with movable lateral spines. First segment of antennular peduncle usually lacking parapenaeid spine .....................................7
6. Carapace with longitudinal suture (extending at least 80% of its length) and transverse suture. Not more than one pair of minute lateral spines anterior to subapical spines. Petasma symmetrical ........................................... Parapenaeus
– Carapace without longitudinal suture. Two or more pairs of conspicuous spines anterior to subapical spines. Petasma asymmetrical .............................................. Metapenaeopsis
7. Pleurobranchia on somite XIII (penultimate thoracic somite). Exopods on maxillipeds and four anterior pairs of pereopods, lacking on fifth pereopod .............. Metapenaeus
– Pleurobranchia absent on somite XIII. Exopods present on all pereopods or absent from four posterior pairs ............. 8
8. Carapace lacking longitudinal suture. Second pereopod armed with ischial spine ............................... Atypopenaeus
– Carapace with longitudinal suture. Second pereopod lacking ischial spine ..................................................................9
9. Body thickset, integument thick. Third pereopod with epipod ............................................................. Trachysalambia
– Body slender, integument thin. Third pereopod lacking epipod ...................................................................................10
10. Distomedian projection of petasma developed into leaflike shape.......................................................... Mierspenaeopsis
– Distomedian projection of petasma undeveloped ................ ..................................................................... Batepenaeopsis
Acknowledgements
This work was funded by the National Fisheries Research and Development Institute (RP-2013-FR-073).
References
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