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Plate II. Nebalia bipes: 1 – distal margin of 4th pleonal segment; 2 – first pleopod; 3 –5th pleopod; 4 – 6th pleopod; 5 – telson with furca.Nebalia hessleri: 6 – distal margin of 6th pleonal segment; 7 – first pleopod; 8 –5th pleopod; 9 – 6th pleopod; 10 – telson with furca41
Order MYSIDACEA Boas, 1883Viktor V. PetryashovGeneral characteristicsThe order Mysidacea is a subdivision of the superorder Peracarida. Mysids areshrimplike higher crustaceans (pl. I, fig. 1). Their body is divided into two tagmata:the cephalothorax and the abdomen. The body consists of six-seven segments of thehead (five segments of the protocephalon and one to two segments of the maxilliped),six-seven thoracic segments, six abdominal ones, and the telson. The eyes are facetedand borne on movable stalks; visual elements sometimes more or less reduced, oftenresulting in the reduction of the eyes. Most part of the head and the thorax is coveredwith a well-developed head shield, or carapace, fused to the dorsum of three to four(rarer) anterior thoracic segments. The antennules (antennae 1) are well developed;they consist of a three-segmented peduncle and two many-segmented flagella. Thethird segment of the peduncle in males may bear a setaceous appendix masculina atthe distal margin. The antennae (antennae 2) are also well developed; they consist of athree-segmented protopod, a scaled exopod (antennal scale, or scaphocerite), and anendopod. The endopod of the antenna is composed of a three- to four-segmented basalpart and many-segmented flagellum. The mysids have eight pairs of thoracic limbs(thoracopods), one or two anterior pairs of which are transformed into maxillipeds. Allthoracopods are biramous; they are composed of an exopod and an endopod, attachedto a common base – protopod. Three constituent segments of the protopod are a precoxa(basal one), a coxa, and a basis (distal one). The coxa in several anterior thoracopodsis provided with a process (epipod). The segments of the endopod, from the baseto the apex, are a preischium, ischium, merus, carpus, propodus, and a dactylus. Theend of the dactylus is often armed with a claw-like spine. There is often a knee-likeprominence between the merus and the carpus. The mysids belonging to the tribeErythropini and to the genus Inusitatomysis of the tribe Mysini have the carpus and thepropodus joined obliquely, and the knee-like prominence is the feature inherent mainlyto these groups. Members of the above-mentioned groups from the Sea of Japan,plus the species of the subfamily Gastrosaccinae may have the propodus further dividedinto subjoints, usually two in number. In many species the carpus and the propodusare fused and have secondary division into several small subjoints (this is characteristicof the most species of the tribe Mysini from the northern half of the Sea ofJapan). The Sea of Japan species lack branchiae (podobranchs). Posterior two, or, rarer,three or seven pairs of the thoracopods in females are provided with welldevelopedplates (oostegites) on their inner sides. The oostegites form the marsupium,in which embryos develop; the development is full and direct. The mysids have fivepairs of abdominal limbs (pleopods). The pleopods may be uniramous or biramous.They are often reduced or absent in females and better developed in males. In manyspecies the fourth or, rarer, the third pair of the pleopods in males is elongate andmodified, as it is used in copulation. One pair of flat biramous uropods and the telsonform a tailfan. The species from the Sea of Japan are provided with the statocyst onthe basal part of the endopods of the uropods.42
Page 3 and 4: BIOTA OF THE RUSSIAN WATERS OF THE
Page 5: УДК 595 (571.6)Биота рос
Page 9 and 10: Fig. 1. Map of the northern part of
Page 11 and 12: oping in the brood pouch have a ful
Page 14 and 15: Biology and ecology. P. avirostris
Page 16 and 17: setae; 3-segmented branch with 6 se
Page 18 and 19: Great Bay, but no one specimen has
Page 20 and 21: far as the Tatar Strait (Bokhan, 19
Page 22 and 23: plankton of the north-western part
Page 24 and 25: Evadne nordmanni Loven, 1836(Pl. VI
Page 26 and 27: ReferencesAn illustrated guide to m
Page 28 and 29: Mordukhai-Boltovskoi, F.D. 1968. On
Page 30 and 31: Plate I. Penilia avirostris (1-4 -
Page 32 and 33: Plate III. Pleopis polyphemoides: 1
Page 34 and 35: Plate V. Podon leuckarti: 1 - parth
Page 36 and 37: Plate VII. Evadne nordmanni: 1 - pa
Page 38 and 39: CLASS MALACOSTRACA Latreille, 1802O
Page 40 and 41: way) to Greenland, the Spitsbergen,
Page 44 and 45: The mysids inhabit marine, brackish
Page 46 and 47: 1. Genus Archaeomysis Czerniavsky,
Page 48 and 49: 1. Genus Holmesiella Ortmann, 1908T
Page 50 and 51: Distribution. M. microphthalma is a
Page 52 and 53: as all female pleopods, rudimentary
Page 54: Description. Antennal scale 4.3-9.4
Page 57 and 58: 2. Neomysis awatschensis (Brandt, 1
Page 59 and 60: 6. Genus Boreoacanthomysis Fukuoka
Page 61 and 62: 8. Genus Exacanthomysis Holmquist,
Page 63 and 64: exopod with one simple lateral seta
Page 65 and 66: Mauchline, J. 1980. The biology of
Page 67 and 68: Plate II. Archaeomysis grebnitzkii
Page 69 and 70: Plate IV. Meterythrops robusta (1-4
Page 71 and 72: Plate VI. Xenacanthomysis pseudomac
Page 73 and 74: Plate VIII. Disacanthomysis dybowsk
Page 75 and 76: Plate X. Neomysis awatschensis: 1 -
Page 77 and 78: Plate XII. Neomysis mirabilis: 1 -
Page 79 and 80: Plate XIV. Exacanthomysis stelleri:
Page 81 and 82: Plate XVI. Paracanthomysis shikhota
Page 83 and 84: (pl. III, figs. 2, 7-9), do not fee
Page 85 and 86: 1. Thysanoessa inermis (Kroyer, 184
Page 87 and 88: 35°45′N) of Honshu Island. In th
Page 89 and 90: Hansen, H.J. 1911. The genera and s
Page 91 and 92: Plate II. Dorsal view of anterior p
Page 93 and 94:
SUBPHYLUM CHELICERATA HEYMONS, 1901
Page 95 and 96:
The class Pycnogonida is currently
Page 97 and 98:
14(15). Compound spines with 1 pair
Page 99 and 100:
Geographical distribution. N. brevi
Page 101 and 102:
*Nymphon longitarse brevicollis Los
Page 103 and 104:
6. Nymphon hodgsoni Schimkewitsch,
Page 105 and 106:
8. Nymphon uniunguiculatum Losina-L
Page 107 and 108:
2 segments; adults have vestigial c
Page 109 and 110:
2. Achelia bituberculata Hedgpeth,
Page 111 and 112:
setae. Oviger relatively short; ovi
Page 113 and 114:
Description. Utinomi’s collection
Page 115 and 116:
Geographical distribution. A. echin
Page 117 and 118:
1. Lecythorhynchus marginatus Cole,
Page 119 and 120:
ears 4 large spines on sole proxima
Page 121 and 122:
2(1). Lateral processes and coxae 1
Page 123 and 124:
*Genus Callipallene Flinn, 1929Type
Page 125 and 126:
*Genus Phoxichilidium Milne-Edwards
Page 127 and 128:
eyond proboscis; chelas much shorte
Page 129 and 130:
KEY TO THE SPECIES OF THE GENUS COL
Page 131 and 132:
Abdomen cylindrical, pointed horizo
Page 133 and 134:
Kim, I.H. & J.S. Hong. 1986. Korean
Page 135 and 136:
Turpaeva, E.P. 2004b. Shallow-water
Page 137 and 138:
Plate II. Nymphon grossipes (from S
Page 139 and 140:
Plate IV. Nymphon longitarse longit
Page 141 and 142:
Plate VI. Nymphon japonicum (from N
Page 143 and 144:
Plate VIII. Nymphon stocki (from Ut
Page 145 and 146:
Plate X. Achelia kurilensis (from L
Page 147 and 148:
Plate XII. Achelia gracilipes (from
Page 149 and 150:
Plate XIV. Tanystylum scrutator (fr
Page 151 and 152:
Plate XVI. Nymphonella tapetis (fro
Page 153 and 154:
Plate XVIII. Decachela discata (fro
Page 155 and 156:
Plate XX. Phoxichilidium ungellatum
Page 157 and 158:
Plate XXII. Anoplodactylus pygmaeus
Page 159 and 160:
INDEX OF LATIN NAMES *AAcanthomysis
Page 161 and 162:
Oochoticum, brevirostre Nymphon 98o
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биота российских вод японского моря - Materials of Alexey Shipunov

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