New Occurrences of Two Penaeid Species (Crustacea: Decapoda: Dendrobranchiata) in Korean Waters

  • cc icon
  • 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.


  • KEYWORD

    Atypopenaeus stenodactylus , Metapenaeopsis toloensis , Penaeidae , Decapoda , Korean waters , New occurrence

  • 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

    Genus Atypopenaeus Alcock, 1905

    (new Korean name: Eory-bori-saewoo-sok)

      >  Atypopenaeus stenodactylus (Stimpson, 1860) (new Korean name: Eory-bori-saewoo) (Figs. 1, 3A)

    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. 1A). 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. 1A). Carapace with minute orbital spine, antennal and hepatic spines well defined; branchiocardiac sulcus feeble (Fig. 1A). 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. 1A). 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. 1B). 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. 1C).

    Coloration in freshly preserved specimen

    Body pale orange, appendages rather deep orange, integument somewhat transparent (Fig. 3A).

    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

    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. 2A 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. 2A). Carapace with small orbital, moderately developed antennal, pterygostomian, hepatic spines; posteroventral part with 15 stridulating ridges (Fig. 2A). 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. 2B). 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. 2C).

    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. 3B).

    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. 2A) and very large coxal expansion of the fourth pereopod in females (Fig. 2C). 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

  • 1. Crosnier A. 1994 Crustacea Decapoda: Les Metapenaeopsis indo-ouest-pacifiques avec un appareil stridulant (Penaeidae). [Mem Mus Natl Hist Nat A] Vol.161 P.255-337 google
  • 2. De Grave S, Fransen CHJM. 2011 Carideorum catalogus: the recent species of the dendrobranchiate, stenopodidean, procarididean and caridean shrimps (Crustacea: Decapoda). [Zool Med Leiden] Vol.85 P.195-589 google
  • 3. Hall DNF 1961 The Malayan Penaeidae (Crustacea, Decapoda). Part II. Further taxonomic notes on the Malayan species. [Bull Raffles Mus] Vol.26 P.76-119 google
  • 4. Hall DNF. 1962 Observations on the Taxonomy and Biology of Some Indo-West Pacific Penaeidae (Crustacea, Decapoda). Fishery Publications (Great Britain Colonial Office) No. 17. H.M. google
  • 5. Hayashi K. 1992 Dendrobranchiata Crustaceans from Japanese Waters. google
  • 6. Kim JN 2012 Arthropoda: Crustacea: Decapoda: Penaeidae, Sicyoniidae, Solenoceridae, Hippolytidae, Crangonidae. Invert Fauna Korea Vol. 21, No. 14. google
  • 7. Kim JN, Choi JH, Kim ST, Cha HK, Hong SY. 2002 Three penaeid species (Crustacea, Decapoda, Penaeidae) from the southeastern coast of Korea. [J Fish Sci Technol] Vol.5 P.235-244 google doi
  • 8. Kim JN, Choi JH, Kim DH, Cha HK, Kong YG, Lee CH, Han CH. 2003 Two penaeid shrimps (Crustacea, Decapoda) from Jeju Island, Korea. [J Fish Sci Technol] Vol.6 P.88-96 google doi
  • 9. Kim JN, Choi JH, Choi KH, Kim ST, Choi YM. 2007 Two penaeoid shrimp (Crustacea: Decapoda) new to Korean waters. [J Fish Sci Technol] Vol.10 P.200-204 google doi
  • 10. Kubo I. 1949 Studies on the penaeids of Japanese and its adjacent waters. [J Tokyo Coll Fish] Vol.36 P.1-467 google
  • 11. Liu R, Zhong Z. 1988 Penaeoid Shrimps of the South China Sea. google
  • 12. Motoh H, Buri P. 1984 Studies on the penaeoid prawns of the Philippines. [Res Crustac] Vol.13/14 P.1-120 google
  • 13. Perez Farfante I, Kensley B. 1997 Penaeoid and sergestoid shrimps and prawns of the world: keys and diagnoses for the families and genera. [Mem Mus Natl Hist Nat] Vol.175 P.1-233 google
  • 14. Racek AA, Dall W. 1965 Littoral Penaeidae (Crustacea Decapoda) from northern Australia, New Guinea, and adjacent waters. [Verh K Neth Akad Wet Amst Afd Nat] Vol.56 P.1-119 google
  • 15. Sakai K, Shinomiya S. 2011 Preliminary report on eight new genera formerly attributed to Parapenaeopsis Alcock, 1901, sensu lato (Decapoda, Penaeidae). [Crustaceana] Vol.84 P.491-504 google
  • 16. Stimpson W. 1860 Crustacea Macrura. In: Prodomus descripsonis animalium evertebratorum, quae in expeditione ad Oceanum Pacificum Septentrionalem, a Republica Federata missa, C. Ringgold et J. Rodgers Ducibus, observavit et descripsit. [Proc Acad Nat Sci Phila] Vol.1860 P.22-47 google
  • 17. Yu HP, Chan TY. 1986 The Illustrated Penaeoid Prawns of Taiwan. google
  • [Fig. 1.] Atypopenaeus stenodactylus (Stimpson, 1860), female (carapace length 15.7 mm) from off Sacheon, southern coast of Korea. (A) Carapace and cephalic appendages, lateral. (B) Left fifth pereopod, lateral. (C) Thelycum, ventral. Scale bars: A, B = 2 mm, C = 1 mm.
    Atypopenaeus stenodactylus (Stimpson, 1860), female (carapace length 15.7 mm) from off Sacheon, southern coast of Korea. (A) Carapace and
cephalic appendages, lateral. (B) Left fifth pereopod, lateral. (C) Thelycum, ventral. Scale bars: A, B = 2 mm, C = 1 mm.
  • [Fig. 2.] Metapenaeopsis toloensis Hall, 1962, female (carapace length 22.2 mm) from off Dadaepo, Busan, southern coast of Korea. (A) Carapace and cephalic appendages, lateral. (B) Abdomen, lateral. (C) Thelycum, ventral. Scale bars: A-C = 2 mm.
    Metapenaeopsis toloensis Hall, 1962, female (carapace length 22.2 mm) from off Dadaepo, Busan, southern coast of Korea. (A) Carapace and
cephalic appendages, lateral. (B) Abdomen, lateral. (C) Thelycum, ventral. Scale bars: A-C = 2 mm.
  • [Fig. 3.] Two penaeid shrimps from southern coast of Korea. (A) Atypopenaeus stenodactylus (Stimpson, 1860), female (carapace length 15.7 mm) from off Sacheon. (B) Metapenaeopsis toloensis Hall, 1962, female (carapace length 22.2 mm) from off Dadaepo, Busan.
    Two penaeid shrimps from southern coast of Korea. (A) Atypopenaeus
stenodactylus (Stimpson, 1860), female (carapace length 15.7
mm) from off Sacheon. (B) Metapenaeopsis toloensis Hall, 1962, female
(carapace length 22.2 mm) from off Dadaepo, Busan.