diff --git a/data/B4/72/87/B47287A25740FD49FF42FCE9191C7DCF.xml b/data/B4/72/87/B47287A25740FD49FF42FCE9191C7DCF.xml new file mode 100644 index 00000000000..12ee4f86ff1 --- /dev/null +++ b/data/B4/72/87/B47287A25740FD49FF42FCE9191C7DCF.xml @@ -0,0 +1,841 @@ + + + +A new record of the species Sinocorophium dongtanense (Crustacea: Amphipoda: Corophiidae) from Korean waters, with comparison to Sinocorophium homoceratum + + + +Author + +Kim, Kyung-Won +Department of Biological Sciences, Dankook University, Cheonan 31116, Republic of Korea + + + +Author + +Kim, Jun-Haeng Heo and Young-Hyo + +text + + +Journal of Species Research + + +2023 + +12 + + +4 + + +286 +293 + + + +journal article +10.12651/JSR.2023.12.4.286 +2713-8615 +13162668 + + + + + + + +Sinocorophium dongtanense +Ren and Liu, 2014 + + + + + + + + +( +Figs. 1-3 +) ṣẖ"ẹăNjș + +( +ṳḡ +) + + + + + +Sinocorophium dongtanense +Ren and Liu, 2014 + +, 96, figs. 1 +- +3. + + + +Sinocorophium homoceratum + +: + +Ko +et al. +, 2017 + +, 277, figs. 2 +- +6; +Heo and Kim, 2017 +, 160, figs. 5, 6. + + + + +Material examined. + +4♂ +, 37$ +Watan +stream, +Ibam-ri +, +Beopseong-myeon +, +Yeonggwang-gun +, +Jeollanam-do +, +Korea +35°20′15.76″N +, +126°26′2.04″E +, + +01 April 2020 + + +; + +2♂ +, 16$ +Jujin +stream, +Yonggi-ri +, +Simwon-myeon +, +Gochang-gun +, +Jeollabuk-do +, +Korea +, +35°31′48.35″N +, +126°35′44.12″E +, + +02 April 2020 + + +; + +1♂ +, 9$ +Watan +stream, +Ibam-ri +, +Beopseong-myeon +, +Yeonggwang-gun +, +Jeollanam-do +, +Korea +35°20′ 15.76″N +, +126°26′2.04″E +, + +31 August 2020 + + +. The specimens were collected by KES. + + + + +Fig. 1. + +Sinocorophium dongtanense +Ren and Liu, 2014 + +. A, adult male, 12.4 mm, habitus; B, adult female, 11.7 mm, habitus. + + + + +Description. Adult male, +body ( +Figs. 1A +, +2 +) depressed, +12.6 mm +long (NIBRIV0000904521). Head ( +Fig. 2B +) longer than pereonite 1; cephalic lobe produced; eye in- visible in alcohol. Length ratio of pereonites 1 +- +7 += +1.00: 1.47: 1.46: 1.92: 2.10: 1.96: 1.67. Coxae flat dorsoventrally, much shallower than pereonites, except coxa 1. Pleonites 1 +- +2, posteroventral corners rounded, with plumose setae posterolaterally; pleonite 3 slightly shorter than pleonites 1 and 2 combined, with simple setae. Urosomites 1 +- +3 separate. + + +Antenna 1 ( +Fig. 2C +) much shorter than antenna 2; peduncle longer than flagellum, peduncular article 1 subrectangular, with irregularly serrulate medially in dorsal view, irregularly serrulate ventrally with 1 small robust seta ventrodistally and unequal simple setae ventrally, length ratio of peduncular articles 1 +- +3 += +1.00: 0.41: 0.27; flagellum 16 +- +20 articulate, with each article with simple short setae. + + +Antenna 2 ( +Fig. 2D +) massive, peduncle stout; peduncular article 2 with 2 pointed unequal gland cones ventrodistally; peduncular article 4 characteristic in form, long and stout, 1.14 times as long as article 5, with 2 lows of tuber- cles medially, 2 strong teeth ventrodistally; peduncular article 5 cylindrical, with 2 teeth anteromedially; length ratio of peduncular articles 2 +- +5 += +1.00: 1.72: 5.31: 5.29; flagellum biarticulate, proximal one 0.62 times as long as peduncular article 5, with 6 small teeth on ventral margin, distal one short, about 0.14 times as long as proximal one, surrounded by setae apically. + + +Gnathopod 1 ( +Fig. 2E +) transverse; coxa elongate anteriorly, with 3 long plumose setae distally, anterior margin with 5 +- +8 unequal setae; basis with 1 +- +3 long simple setae posterodistally; ischium subrectangular, with long plumose setae ventrodistally; merus short, with plumose setae ventrodistally; carpus with 2 +- +3 simple setae midanteriorly, distal corner with a transverse row of simple setae, posterior margin with 2 rows of plumose setae; propodus subrectangular, palm lined with rows of bifid spinules; dactylus falcate, nearly fitting to palm; length ratio of 2 +- +7 articles += +1.00: 0.26: 0.27: 1.02: 0.64: 0.22. + + +Gnathopod 2 ( +Fig. 2F +) simple; coxa small; basis with 3 +- +5 long simple setae posterodistally; merus convexly curved posteriorly, with 2 rows of long plumose setae along posterior margin and medial portion; carpus isos- celes triangle in shape, with several simple and plumose setae posterodistally; propodus both margins with simple setae, proximal half of medial region with a curved row of plumose setae; dactylus long and falcate; length ratio of 2 +- +7 articles += +1.00: 0.15: 0.96: 0.81: 1.25: 0.83. + +C B E A D F G H + + +Fig. 2. + +Sinocorophium dongtanense +Ren and Liu, 2014 + +. Adult male, 12.36 mm: A, habitus; B, head (dorsal view); C, antenna 1 (medial view); D, antenna 2 (medial view); E, gnathopod 1; F, gnathopod 2; G, pereopod 3; H, pereopod 4. Scale bars: A +- +D += +1.0 mm, E +- +H += +2.0 mm. + + + +Pereopod 3 ( +Fig. 2G +) simple; basis subrectangular; merus slightly widening distally; propodus thin and long, 0.73 times as long as merus; dactylus slender and falcate; length ratio of 2 +- +7 articles += +1.00: 0.35: 0.52: 0.40: 0.48: 0.35. + + +Pereopod 4 ( +Fig. 2H +) similar to pereopod 3, but basis slightly more setose. + + +Pereopod 5 ( +Fig. 3A +) much shorter and different struc- ture than pereopod 4, coxa narrowing posteriorly; basis slightly widened anteriorly, anteromarginally with several setae, posterior margin with 8 plumose setae; merus widening distally, both margins with plumose setae; carpus subtriangular, with 2 oblique rows of 5 proximal and 10 distal robust setae respectively; propodus subequal in length to merus; dactylus short. length ratio of 2 +- +7 articles += +1.00: 0.30: 0.60: 0.28: 0.28: 0.15. + + +Pereopod 6 ( +Fig. 3B +) similar to pereopod 5, but longer; basis with a row of plumose setae posteriorly; merus anterior margin with a row of unequal plumose setae; carpus subtriangular, with 2 oblique rows of 5 proximal and 8 distal robust setae respectively; propodus slender; dactylus short; length ratio of 2 +- +7 articles += +1.00: 0.22: 0.69: 0.31: 0.34: 0.17. + + +Pereopod 7 ( +Fig. 3C +) elongate, greatly longer than others; basis elongate-ovate, 0.46 times wider than long, densely setose along both margins with long plumose setae; length ratio of 2 +- +7 articles += +1.0: 0.30: 0.66: 0.62: 0.84: 0.38. + + +Urosomites 1 +- +3 ( +Fig. 3D +) separate; urosomite 1 longest, widest and slightly curved dorsally; uropods 1 +- +3 aris- ing laterally. + + +Uropod 1 ( +Fig. 3D +) extending beyond end of uropod 2; peduncle much longer than rami, 1.85 times as long as outer ramus, lateral margin with 13 short setae, medial margin with 4 robust setae; outer rami 1.30 times longer than inner. + + +Uropod 2 ( +Fig. 3D +), peduncle slightly longer than rami, with apicodistal robust seta and cluster of setae laterally; rami subequal in length. + + +Uropod 3 ( +Fig. 3D +) uniramous, peduncle subtrapezoi- dal, subequal to ramus; ramus ovate, margins surrounded by simple setae. + + +Telson ( +Fig. 3D +) fleshy, thickened, truncate distally, with 2 rounded lobe dorsolaterally. + + +Adult female, +similar to male, body ( +Fig. 3E +) +11.6 mm +long. Head ( +Fig. 3F +) similar to that of male, but rostrum wider and longer, beyond cephalic lobe. + + +Antenna 1 ( +Fig. 3G +) similar to that of male, but more setose, smooth; peduncular article 1 rectangular, with unequal simple setae ventrally and a robust seta posterodistally, without lows of teeth; length ratio of peduncular articles 1 +- +3 += +1.00: 0.53: 0.36; flagellum 13 +- +16 articulate, each article with simple short setae. + + +Antenna 2 ( +Fig. 3H +) similar in shape, but stouter and shorter than that of male, especially peduncular articles 3 and 4; length ratio of peduncular articles 2 +- +5 += +1.00: 1.41: 3.15: 2.63; flagellum biarticulate, proximal one 0.51 times as long as peduncular article 5, distal one short, 0.22 times as long as proximal one. + + +Molecular data. +CO1 gene sequences (GenBank accession numbers OQ996608, OQ998653, OQ998654, OR 048101, OR048102) were obtained from five + +S. dontanense + +specimens. The sequences were aligned and compared with sequences from + +S. hangangense + +(OQ943924, OQ970180), + +S. jindoense + +(OQ991265, OQ992550), and + +S. sinensis + +(OQ991369, OQ991370) ( +Table 1 +). Intra-specific variation of the CO1 gene sequence of + +S. dontanense + +ranged between 0 and 1.2%, while inter-specific variation ranged from a low of 22.8% ( + +S. hangangense + +and + +S. jindoense + +) to a high of 26.7% ( + +S. dontanense + +and + +S. jindoense + +) ( +Fig. 5 +, +Table 2 +). + + + + +Table 1. +Sampling localities information of + +Sinocorophium +species + +from Korea and GenBank access numbers. + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
No.DateLocalityLatitude, longitudeSpeciesGenBank Accession No.
12017.09.12Yonggi-ri, Simwon-myeon, Gochang-gun, JB35°31′48″N, 126°35′44″E + +S. dongtanense + +OQ996608
22017.09.12Yonggi-ri, Simwon-myeon, Gochang-gun, JB35°31′48″N, 126°35′44″E + +S. dongtanense + +OQ998653
32017.09.12Yongsan-ri, Buan-myeon, Gochang-gun, JB35°30′33″N, 126°36′02″E + +S. dongtanense + +OQ998654
42020.04.01Ibam-ri, Beopseong-myeon, Yeonggwang-gun, JN35°20′15″N, 126°26′02″E + +S. dongtanense + +OR048101
52020.08.31Ibam-ri, Beopseong-myeon, Yeonggwang-gun, JN35°20′15″N, 126°26′02″E + +S. dongtanense + +OR048102
62018.04.18Baekpo-ri, Hyeonsan-myeon, Haenam-gun, JN34°25′27″N, 126°30′42″E + +S. hangangense + +OQ943924
72018.04.18Baekpo-ri, Hyeonsan-myeon, Haenam-gun, JN34°25′27″N, 126°30′42″E + +S. hangangense + +OQ970180
82017.04.10Daecheon-dong, Boryeong-si, CN36°21′01″N, 126°34′52″E + +S. jindoense + +OQ991265
92017.04.10Daecheon-dong, Boryeong-si, CN36°21′01″N, 126°34′52″E + +S. jindoense + +OQ992550
102022.04.20Seopo-myeon, Sacheon-si, KN35°00′45″N, 128°00′24″E + +S. sinensis + +OQ991369
112022.06.04Sinsido-ri, Okdo-myeon, Gunsan-si, JB35°49′07″N, 126°26′57″E + +S. sinensis + +OQ991370
+ + + +Fig. 3. + +Sinocorophium dongtanense +Ren and Liu, 2014 + +. A, pereopod 5; B, pereopod 6; C, pereopod 7; D, urosomites. Adult female, 11.71 mm: E, habitus; F, head (dorsal view); G, antenna 1 (medial view); H, antenna 2 (left, medial view). Scale bars: A +- +H += +1.0 mm. + + + + +Remarks. +It seems that there has been a mistake in the identification of specimens previously recorded as + +S. homoceratum +( +Yu, 1938 +) + +in +Korea +( +Heo and Kim, 2017 +; + +Ko +et al. +, 2017 + +). Upon rechecking the sample descriptions and specimens used in previous studies ( +Fig. 4 +), it was found that these specimens had the characteristics of + +S. dongtanense +Ren and Liu, 2014 + +, which is morphologically similar to + +S. homoceratum + +, but has distinct differences, such as two rows of teeth on the medial surface of peduncular article 4 of antenna 2. To confirm this, the COI molecular sequences of both previously identified and newly identified samples of + +S. dongtanense + +and other + +Sinocorophium +species + +in +Korea +were compared and analyzed, along with related genus data from the NCBI ( +Fig. 5 +). The new specimens accord with the original description given by +Ren and Liu, 2014 +, with some slight differences in certain characteristics, such as the length of antenna +1 in +males and the number of teeth on peduncular article 4 of antenna +2 in +females. Through this study, there are four species of the genus + +Sinocorophium + +in Korean waters. + + + +Table 2. +The genetic distance in the Genus + +Sinicorophium +species + +based on mtDNA COI sequences + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
No.Species1234567891011
1 + +Sinocorophium dongtanense + +
2 + +Sinocorophium dongtanense + +0.000
3 + +Sinocorophium dongtanense + +0.0000.000
4 + +Sinocorophium dongtanense + +0.0120.0120.012
5 + +Sinocorophium dongtanense + +0.0050.0050.0050.011
6 + +Sinocorophium hangangense + +0.2390.2390.2380.2390.241
7 + +Sinocorophium hangangense + +0.2370.2370.2360.2370.2390.011
8 + +Sinocorophium jindoense + +0.2620.2620.2620.2570.2660.2300.230
9 + +Sinocorophium jindoense + +0.2620.2620.2620.2580.2670.2280.2280.009
10 + +Sinocorophium sinensis + +0.2340.2340.2330.2330.2330.2420.2430.2370.244
11 + +Sinocorophium sinensis + +0.2360.2360.2350.2350.2350.2490.2490.2410.2480.011
+ + + +Fig. 4. + +Sinocorophium homoceratum + +, peduncular article 4 of antenna 2 (MABIK CR00240676) from MABIK, analyzed by + +Ko +et al., +2017 + +. A, dorsal view; B, medial view. + + + +Habitat. +The new recorded species is found in brackish estuary with a water temperature of 15.38℃, salinity of 6.45 PSU, and pH 6.9. Sediment is composed of gravel and sand. + + + + +Distribution. +China +, +Korea +(Yellow Sea). + + + + \ No newline at end of file