First Record of the Sponge-Dwelling Palaemonid Shrimp, Anchistioides compressus (Crustacea: Decapoda: Palaemonidae) in Korea

2020·2.6 MB·

by  Jin-Ho Park

Anim. Syst. Evol. Divers. Vol. 36, No. 4: 319-329, October 2020
https://doi.org/10.5635/ASED.2020.36.4.045
Review article
First Record of the Sponge-Dwelling Palaemonid
Shrimp, Anchistioides compressus
(Crustacea: Decapoda: Palaemonidae) in Korea
Jin-Ho Park1,*, Damin Lee1, Sang-Hui Lee2, Sammy De Grave3
1College of Natural Sciences, Seoul National University, Seoul 08826, Korea
2National Marine Biodiversity Institute of Korea, Seocheon 33662, Korea
3Oxford University Museum of Natural History, Parks Road, Oxford, OX1 3PW, UK
ABSTRACT
The sponge-dwelling shrimp, Anchistioides compressus Paulson, 1875, is recorded from Munseom Islet, Jejudo Island,
Korea for the first time. All specimens were collected inside the orange coloured sponges by trimix diving at depth
from 36-45 m on the rocky reef slope. Anchistioides compressus is characterized by the shape of the rostrum, the
posterolateral teeth of the sixth somite, stylocerite being well developed, the anterior margin of the scaphocerite sharply
produced, and the biunguiculate dactyli of the ambulatory pereiopods, as well as the proportions of the fingers of the
second pereiopods. An illustrated description of the specimens and colour photo are provided to aid future recognition.
Keywords: Jejudo Island, symbiotic, range extension, taxonomy, Korean fauna
INTRODUCTION compressus was collected from an unidentified host sponge
species from Munseom Islet, Jejudo Island in 2018 (Fig. 1B).
The genus Anchistioides Paulson, 1875 currently comprises The species is herein recorded as new to the Korean fauna,
three species: the widespread Indo-West Pacific species An- and an illustrated description is provided to aid future recog-
chistioides compressus Paulson, 1875 (Fig. 1A), A. willeyi nition.
(Borradaile, 1900), and the western Atlantic A. antiguensis
(Schmitt, 1924). All three species are known to associate with
a variety of demosponges and calcareous sponges, inhabiting MATERIALS AND METHODS
their spongocoel (Miyake and Fujino, 1967; Marin, 2009;
De Grave and Anker, 2017; Fransen, in press). Although for During extensive sampling of palaemonid shrimps from Je-
many decades the genus was placed in its own family, An- judo Island, Korea in 2018, six specimens of Anchistioides
chistioididae, recently Chow et al. (2020) synonymized the compressus were collected by trimix diving at depths from
family with Palaemonidae Rafinesque, 1815, based on a phy- 36-45 m. All symbiotic shrimps were collected with host
logenetic study and a review of the morphological and devel- sponges and preserved in 80% ethanol. Shrimps were ob-
opmental reasoning to support the family. served using a stereo microscope (M125; Leica, Germany)
The original description of A. compressus, the type species and light microscope (BX51; Olympus, Japan). Digital illus-
of genus Anchistioides, was brief and sparingly illustrated on trations were done using a microscope digital camera (Mc170;
the basis of a single male specimen, collected from an un- Leica), Helicon focus software (Helicon focus 7.5.6, Ukraine)
known location in the Red Sea (Paulson, 1875). Since then, and a drawing tablet (Intuos Pro PTH-660; Wacom, China)
relatively more detailed descriptions have been done in litera- with Adobe Illustrator CC (Adobe Systems, USA), follow-
ture (Kemp, 1925; Gordon, 1935; Miyake and Fujino, 1967), ing Coleman (2006). Postorbital carapace length (pocl) was
with the species extensively described and illustrated by measured from the postorbital margin to the posterior dorsal
Fransen (in press). During fieldwork in Korea, Anchistioides margin of the carapace. Material is deposited in the Marine
This is an Open Access article distributed under the terms of the Creative *To whom correspondence should be addressed
Commons Attribution Non-Commercial License (http://creativecommons.org/ Tel: [phone], Fax: [phone]
licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, E-mail: [email protected], [email protected]
and reproduction in any medium, provided the original work is properly cited.
eISSN 2234-8190 Copyright The Korean Society of Systematic Zoology
Jin-Ho Park, Damin Lee, Sang-Hui Lee, Sammy De Grave
B
A
Fig. 1. Map of Indo West Pacific Ocean (IWP): A, Distribution of Anchistioides compressus Paulson, 1875; B, Collection locality of
Jejudo Island, Korea. Red, previous record; Blue, present records; ?, not specified type locality.
Arthropod depository Bank of Korea in Seoul National Uni- 120531_002); 1♀, 2♂♂ (pocl 3.2, 3.9, 3.8 mm), same data
versity (MADBK), Seoul and National Institute of Biological (NIBRIV0000837765 to 837767).
Resources (NIBR), Incheon. Description of Korean specimens. Body (Figs. 2, 8A) me-
dium-sized, subcylindrical form.
Rostrum (Figs. 2, 3A, B) straight, stout, about 1.1 times as
SYSTEMATIC ACCOUNTS long as pocl, overreaching distal end of scaphocerite; dorsal
margin with 9-10 teeth, most posterior one at about 0.2 of
Family Palaemonidae Rafinesque, 1815 rostrum length; ventral margin deep at medial part, with 7-9
Genus 1*Anchistioides Paulson, 1875 teeth.
Carapace (Fig. 3A, B) smooth, antennal tooth present, he-
2*Anchistioides compressus Paulson, 1875 (Figs. 2-8) patic tooth absent, with conical postorbital tubercle; inferior
Anchistioides compressus Paulson, 1875: 115 (type locality: orbital angle minutely produced medially; pterygostomial an-
Red Sea); Nobili, 1906: 54; Kemp, 1925: 339; Gordon, gle rounded.
1935: 339; Holthuis, 1952: 18; Bruce, 1967: 570, 1974: Abdomen (Fig. 2) smooth, first segment without anterome-
463, 1979: 241, 1981: 2, 1984: 199, 2007: 98; Miyake and dian dorsal lobe; first five pleonites ventrally rounded; sixth
Fujino, 1967: 279; Li, 1996: 231; Nomura et al., 1996: 10; somite (Fig. 3C) about 1.2 times as long as fifth, with well-de-
Poupin, 1998: 11; Hayashi, 1999: 389; Davie, 2002: 220; veloped posterolateral margin with two sharp teeth on each
Li et al., 2007, 43; De Grave and Fransen, 2011: 308; Fran- side, posteroventral angles sharply pointed.
sen (in press). Telson (Figs. 2, 3C) about 0.6 of pocl, about 1.4 times lon-
ger than sixth somite length, about 3.0 times longer than max-
Material examined. Korea: 1♀ (pocl 4.2 mm), Jejudo Is- imal width, tapering posteriorly; two pairs of dorsal spiniform
land, Munseom Islet, 33°13.617′N, 126°34.133′E, depth: setae, at about 0.4 and 0.6 of telson length, respectively; pos-
36 m, 17 Jan 2018, leg. JH Park (MADBK120531_003; 1♂ terior margin (Fig. 3D) entire without median tooth, furnished
(pocl 3.3 mm), Jejudo Island, Munseom Islet, 33°13.610′N, with three pairs of spiniform setae, lateral pair short, about 0.3
126°34.161′E, depth: 45 m, 20 Jun 2018, leg. JH Park (MA- of length of median pair, intermediate pair stout, about 0.55
D BK120531_001, GenBank accession no: MK602862; of submedian pair; submedian pair long and slender, setulose.
Park et al., 2019; 1♀ (pocl 4.0 mm), same data (MADBK Eye (Figs. 2, 3E) with corneal diameter about 0.25 of pocl,
Korean name: 1*해면더부살이새우속 (신칭), 2*작은손해면더부살이새우 (신칭)
320 Anim. Syst. Evol. Divers. 36(4), 319-329
First Records of Anchistioides compressus from Korea
Fig. 2. Anchistioides compressus Paulson, 1875, lateral aspect. Female pocl 3.3 mm (MADBK 120531_002). Scale bar 3.0 mm.
=
corneal length about 0.6 of diameter, without nebenauge; nathite well developed, about 3 times longer than central
stalk short, tapering proximally, medial length slightly longer width, with marginal plumose setae.
than corneal length. First maxilliped (Fig. 4D) with coxal and basal endites
Antennule (Figs. 2, 3F) with peduncle extending middle fused, suture demarcated, medially with serrulate and sim-
of scaphocerite, flagella well developed; stylocerite reach- ple setae; palp simple, with rounded distal lobe, extending to
ing to middle of basal segment, lateral margin straight, with distal margin of basis endite, without seta; exopod flagellum
acute distal tooth; basal segment with slightly convex lateral short, reduced, about 3.6 times longer than maximal width,
margin, distolateral tooth reaching to middle of distal seg- distally with one plumose seta; caridean lobe about 2.7 times
ment, medial margin with strong ventromedial tooth at about longer than central width, marginally with plumose setae; epi-
middle of segment length; intermediate and distal segment pod large, feebly bilobed, about 3.7 times longer than central
short, subequal, about 0.3 of proximal segment length, with- width.
out special features; upper flagellum biramous, proximal 4 or Second maxilliped (Fig. 4E) with epipod well-developed,
5 segments fused, short ramus with 5 or 6 segments, with 17 without podobranch; exopod well-developed, with eight
groups of long aesthetascs; longer ramus slender, with about plumose terminal setae; endopod with coxal segment, with
30 segments, lower flagellum similar with about 35 segments. two simple setae; ischial and basal segments fused; meral
Antenna (Fig. 3G) with basicerite distodorsally rounded, segment without special features; carpal segment tapering
ventrolateral margin with long setae; ischiocerite and mero- proximally, with simple setae distally; propodal segment with
cerite unarmed; carpocerite reaching to about 0.3 of scapho- long simple setae distally and medially; dactylar segment
cerite length; scaphocerite about 2.6 times as long as maximal with serrulate and simple setae medially.
width, lateral margin slightly convex, anterior margin sharply Third maxilliped (Fig. 4F) without exopod and rudimenta-
pointed, medial margin convex, distolateral tooth large, not ry exopod, slightly overreaching distal margin of merocerite;
exceeding lamella. coxa reduced; lateral plate convex; ischiomerus completely
Mandible (Fig. 4A) without palp; incisor process with three fused to basis, suture demarcated, ischiomerus about 5 times
distally acute teeth, central tooth smaller than marginal ones; longer than proximal width, medially and laterally with long
molar process robust, apex subquadrate, with four blunt mar- simple setae; penultimate segment about 0.45 as long as is-
ginal teeth, without setal bristles. chiomeral length, about 4.4 times as long as proximal width,
Maxillula (Fig. 4B) with bilobed palp, lower palp lobe distally with four long simple setae; ultimate segment as long
rounded, with tubercle, upper lobe rounded; upper lacinia as penultimate segment, tapering distally, with long serrulate
broad, with 6 stout and simple spines, with simple setae dis- setae.
tally; lower lacinia robust with long, strong, simple terminal All pereiopods without rudimentary exopod on basis. First
setae. pereiopods (Fig. 5A) subequal in shape and size, reaching to
Maxilla (Fig. 4C) without basal endite; palp long, simple, 0.9 of distal margin of scaphocerite; coxa and basis without
with rounded lobe, five plumose setae laterally; scaphog- special features; ischium short, about half as long as merus,
Anim. Syst. Evol. Divers. 36(4), 319-329 321
Jin-Ho Park, Damin Lee, Sang-Hui Lee, Sammy De Grave
C
A
D
D
C
B
E-G
E
A, B
F G
Fig. 3. Anchistioides compressus Paulson, 1875, female pocl 3.3 mm (MADBK 120531_002): A, Carapace, lateral; B, Same, dorsal; C,
Sixth pleonal segment, telson, and right uropod, dorsal; D, Posterior margin of telson, dorsal; E, Eye, dorsal; F, Antennule, dorsal; G,
Antenna, ventral. Scale bars: A, B 2.0 mm, C, E-G 1.0 mm, D 0.3 mm.
= = =
unarmed; merus about 1.1 times as long as carpus, unarmed; mesially completely covered with group of setae; movable
carpus slightly tapering proximally, about 1.3 times as long finger with acute tooth, distinctly demarcated, with group of
as chela; carpo-propodal brush well developed; chela with setae distally.
palm about 1.3 times as long as fingers, simple, cutting edges Second pereiopods (Figs. 5B, 7A) subequal in shape and
entire; fixed finger with acute tooth, distinctly demarcated, tip size, overreaching distal margin of scaphocerite by entire
322 Anim. Syst. Evol. Divers. 36(4), 319-329
First Records of Anchistioides compressus from Korea
C
A F
B
D
E
A-F
Fig. 4. Anchistioides compressus Paulson, 1875, female pocl 3.3 mm (MADBK 120531_002): A, Mandible; B, Maxillula; C, Maxilla; D,
First maxilliped; E, Second maxilliped; F, Third maxilliped. Scale bars: A-F 0.5 mm.
=
length of dactylus; coxa proximally rounded; basis short, maximal width, unarmed; carpus short, slightly tapering prox-
without special features; ischium short, about 0.7 times as imally, about 1.4 times as long as maximal width, about 0.4
long as merus, unarmed; merus slightly swollen proximally, as long as chela; chela (Fig. 5C) about 0.6 of pocl, about 1.6
about 1.8 times as long as carpus, about 2.9 times longer than times as long as merus; palm smooth, subcylindrical, about 1.4
Anim. Syst. Evol. Divers. 36(4), 319-329 323
Jin-Ho Park, Damin Lee, Sang-Hui Lee, Sammy De Grave
A
B
D
A, B, D, F, H
E
F
E, G, I
I
G
H
C
C
Fig. 5. Anchistioides compressus Paulson, 1875, female pocl 3.3 mm (MADBK 120531_002): A, First pereiopod, lateral; B, Second
pereiopod, lateral; C, Same, chela, mesial; D, Third pereiopod, lateral; E, Same, dactylus and distal propodus, ventromesial; F,
Fourth pereiopod; G, Same, dactylus and distal propodus, ventromesial; H, Fifth pereiopod, lateral; I, Same, dactylus and distal
propodus, ventromesial. Scale bars: A, B, D, F, H 1.5 mm, E, G, I 0.3 mm, C 0.5 mm.
= = =
times as long as fingers; fingers with subspatulate concavity times as long as carpus, with single spiniform setae on ventral
on mesial side; fixed finger laterally expanded, with angular margin, with a pair of stout spiniform setae on distoventral
proximal process mesially, distally with acute strong tooth, flexor margin; dactylus about 0.2 as long as propodus, biun-
distinctly demarcated; movable finger with acute strong tooth guiculate, dorsal unguis larger than ventral one, flexor margin
distally, distinctly demarcated. entire.
Ambulatory pereiopods (Fig. 2) subequal in shape and size. Fourth pereiopod (Fig. 5F, G) with merus about 1.5 times
Third pereiopod (Fig. 5D, E) overreaching distal end of sec- as long as ischium, unarmed; carpus about half as long as
ond article of antennular peduncle by entire length of propo- merus, unarmed; propodus about 1.5 times as long as carpus,
dus; merus about 1.6 times as long as ischium, unarmed; car- with single spiniform setae on ventral margin, with a pair of
pus about 0.6 as long as merus, unarmed; propodus about 1.2 stout spiniform setae on distoventral flexor margin; dactylus
324 Anim. Syst. Evol. Divers. 36(4), 319-329
First Records of Anchistioides compressus from Korea
A, B C, D E
C D
E
A B
Fig. 6. Anchistioides compressus Paulson, 1875, female pocl 3.3 mm (A, B) (MADBK 120531_002), male pocl 3.9 mm (C-E) (NI-
BRIV0000837766): A, C, First pleopod; B, D, Second pleopod; E, Appendices interna and masculina. Scale bars: A-D 1.0 mm,
E 0.3 mm.
=
=
about 0.2 as long as propodus, biunguiculate, with dorsal un- maximal width, with plumose setae.
guis larger than ventral one, flexor margin entire. Second pleopod of male (Fig. 6D, E) with basipodite as
Fifth pereiopod (Figs. 5H, I, 7B) with merus about 1.6 long as endopod, about 1.6 times longer than wide, medi-
times as long as ischium, unarmed; carpus about 0.6 as long ally with plumose setae; endopod with appendix masculina
as merus, unarmed; propodus about 1.5 times as long as car- slightly shorter than appendix interna, distally with 2 long
pus, with or without two spiniform setae on ventral margin, setae.
with one stout spiniform setae on distoventral flexor margin, Uropod (Fig. 3C) overreaching distal end of telson; exopod
a row of poor developed setae (six simple setae per row) slightly longer than endopod, outer margin entire, with one
present on distolateral margin; dactylus about 0.3 as long as small spiniform setae, distolateral tooth well-developed.
propodus, biunguiculate, with dorsal unguis larger than ven- Colour in life. Body and appendages transparent, with yel-
tral one, flexor margin entire. low and red chromatophores along anterior appendages and
First pleopod of female (Figs. 6A, 7D) with basipodite as pereiopods (Fig. 8B, C).
long as exopod, about 2.5 times longer than wide, medial- Ecological information. All Korean specimens were collect-
ly with plumose setae; endopod about 2.5 times longer than ed inside the unidentified orange coloured sponges below 35
wide, tapering distally, with plumose setae; exopod about 3.9 m.
times longer than maximal width, with plumose setae. Geographical distribution. The species is widespread in
Second pleopod of female (Fig. 6B) with basipodite as long tropical to temperate waters in Indo-Pacific Ocean (Fig. 1):
as endopod, about 1.8 times longer than wide; appendix inter- Red Sea (type locality, no further details), East Africa (Zan-
na reaching to middle of endopod. zibar, Kenya), Maldives (Magoodhoo Atoll), Andaman Is-
First pleopod of male (Figs. 6C, 7C) with basipodite as lands, Western Australia (Dampier Archipelago), Eastern
long as exopod, about 2.2 times longer than wide, medial- Australia (Heron Island; Capricorn Island; Wilson Island;
ly with plumose setae; endopod about 2.3 times longer than Moreton Bay), Vanuatu (Aoré Island). French Polynesia (Tu-
wide, tapering distally; appendix interna slightly overreaching amotu-Gambier Islands), Indonesia (Spermonde Archipelago;
distal margin of endopod; exopod about 3.5 times longer than Bali), Philippines (Bohol), South China Sea (Xisha (Paracel)
Anim. Syst. Evol. Divers. 36(4), 319-329 325
Jin-Ho Park, Damin Lee, Sang-Hui Lee, Sammy De Grave
A B
C D
Fig. 7. Anchistioides compressus Paulson, 1875, male pocl 4.0 mm (A-C) (MADBK 120531_001), female pocl 4.2 mm (D) (MADBK
120531_003): A, Second, pereiopod, coxa and basis, lateral; B, Fifth pereiopod, dactylus and distal propodus, mesial; C, D, First
pleopod, endopod. Scale bars: A-D 3.0 mm
=
Archipelago, Nansha (Spartly) Archipelago), U.S.A (Hawaiian descriptions of Anchistioides compressus (Paulson, 1875;
Islands), Japan (Amakusa Island; Yakabi Island) and Korea Kemp, 1925; Miyake and Fujino, 1967; Fransen, in press).
(Jejudo Island) (Paulson, 1875; Nobili, 1906; Kemp, 1925; Notably in the shape of the rostrum, the posterolateral teeth
Miyake and Fujino, 1967; Bruce, 1974, 1979, 1981, 2007; of the sixth somite, the anterior margin of the scaphocerite
Nomura et al., 1996; present study; Fransen, in press). sharply produced, the biunguiculate dactyli of the ambula-
tory pereiopods, as well as the proportions of the fingers of
the second pereiopods. A few minor differences are however
DISCUSSION apparent when comparing the Korean specimens to previous
descriptions. The length of telson of the holotype was de-
The material examined herein agree well with the previous scribed as “telson is three times as long as the sixth segment”,
326 Anim. Syst. Evol. Divers. 36(4), 319-329
First Records of Anchistioides compressus from Korea
A
B C
Fig. 8. Anchistioides compressus Paulson, 1875, female pocl 4.2 mm (MADBK 120531_003) and host sponges: A, Preserved speci-
men, lateral view; B, Specimen on the host sponge; C, Specimen inside the host sponge. Photographs by JH Park.
whilst in the Korean specimens, the telson less than 1.5 times paired stout spiniform setae on distoventral flexor margin on
as long as the sixth segment (Fig. 3C). The molar process of fourth pereiopod; and two spiniform setae on the ventral mar-
the mandible was described as terminating in five large cusps gin, with one spiniform setae on distoventral flexor margin
by Kemp (1925), but in the present specimens it is armed on fifth pereiopod (Fig. 5G, I). The upper antennular flagel-
with four distal teeth (Fig 4A). The propodi of the fourth and lum was described as “the third fused segment, the shorter of
fifth pereiopods were described as “fifth pair the propodus which consists of four joints” in Miyake and Fujino (1967),
without spinule on the posterior border” and “fourth and fifth while in the present specimens the upper flagellum has the
pereiopods lack this spine”, respectively in Kemp (1925) and proximal 4-5 segments fused, and the short ramus with 5-6
Miyake and Fujino (1967), while in the present specimens a segments. Fransen (in press) also reported on the presence of
single spiniform seta is present on the ventral border, with a rudimentary exopods on the third maxilliped and all ambula-
Anim. Syst. Evol. Divers. 36(4), 319-329 327
Jin-Ho Park, Damin Lee, Sang-Hui Lee, Sammy De Grave
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