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Parapodium

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have paired, fleshy parapodia which are segmentally arranged along the body axis. Parapodia vary greatly in size and form, reflecting a variety of functions, such as gas exchange, anchorage, protection and locomotion.
191:, which can result in the modification of those parapodia, loss of chaetae and elongation of the cirri into anterior-facing tentacular cirri. 168:(neurochaetae and notochaetae respectively), which are highly specific and greatly diversified. A single stout internal chaeta, called an 107:
An image plate showing the different anatomical features (dashed outline) of a representative annelid parapodium. Parapodium is from
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sp. showing the internal acicula that support the two lobes of the parapodium. This parapodium is from a Museums Victoria specimen.
346:. Some sea hares use their parapodia to swim. Parapodia can even be used for respiration (similar to gills) or for locomotion. 418: 172:, may be present in each lobe, which are used to support well-developed parapodia. Notopodia and neuropodia can also bear 80: 460: 117: 455: 326: 436:
Polychaetes and Allies: the Southern Synthesis - Class Polychaeata: Definition and General Description
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which are tentacle-like projections of the parapodia. In some groups, such as the scale worms (e.g.
75:) refers to lateral outgrowths or protrusions from the body. Parapodia are predominantly found in 384: 219: 181: 28: 414: 306: 215: 173: 157: 103: 45: 320: 343: 187:
In most species, the anteriormost segments may be specialised into the head region and
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lobes neuropodia. Both neuropodia and notopodia may possess a bundle of
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Parapodia are found in the following taxonomic groups of gastropods:
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are also called parapodia. They are particularly well-developed in
319: 116: 102: 33: 44:, with a microscope image of one of its parapodia (inset). 121:
Microscope photograph of a parapodium from a specimen of
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extending from the notopodium; can be modified into a
95:, 'parapodium' refers to lateral fleshy protrusions. 324:
Dorsal view of a freshly collected intact sea slug,
338:The fleshy protrusions on the sides of some marine 180:), the dorsal cirrus is modified into a scale (or 152:(consisting of one lobe or ramus) but are usually 156:(two lobes or rami). In the latter case, the 8: 438:. Melbourne: CSIRO Publishing. pp. 1–3. 409:Rouse, Greg; Pleijel, Frederick (2001). 198: 195:Glossary of components of the parapodium 434:Hutchings, P. A.; Fauchald, K. (2000). 401: 7: 413:. Oxford: Oxford University Press. 160:lobes are called notopodia and the 113:and is a Museums Victoria specimen. 79:, where they are paired, unjointed 68: 269:Stout internal supporting chaeta ( 232:Stout internal supporting chaeta ( 25: 309:extending from the neuropodium 1: 222:(or elytron) in scale worms. 27:For the genus of plants, see 52:In invertebrates, the term 477: 26: 83:outgrowths that bear the 38:Specimen of the annelid, 327:Plakobranchus ocellatus 87:. In several groups of 335: 236:) for the neuropodium 128: 114: 49: 323: 273:) for the notopodium 120: 106: 63:, beyond or beside + 37: 330:, showing its head, 110:Lepidonotus oculatus 41:Lepidonotus oculatus 316:Gastropod parapodia 249:of the neuropodium 140:General description 133:polychaete annelids 385:Epitoke parapodium 336: 286:of the notopodium 129: 115: 50: 29:Parapodium (plant) 461:Gastropod anatomy 313: 312: 99:Annelid parapodia 16:(Redirected from 468: 440: 439: 431: 425: 424: 406: 199: 131:Most species of 70: 46:Museums Victoria 21: 476: 475: 471: 470: 469: 467: 466: 465: 456:Annelid anatomy 446: 445: 444: 443: 433: 432: 428: 421: 408: 407: 403: 398: 381: 344:sea butterflies 318: 197: 142: 101: 32: 23: 22: 15: 12: 11: 5: 474: 472: 464: 463: 458: 448: 447: 442: 441: 426: 419: 400: 399: 397: 394: 393: 392: 387: 380: 377: 376: 375: 369: 363: 357: 334:and parapodia. 317: 314: 311: 310: 304: 302:Ventral cirrus 298: 297: 294: 288: 287: 281: 275: 274: 267: 261: 260: 257: 251: 250: 244: 238: 237: 230: 224: 223: 213: 207: 206: 203: 196: 193: 141: 138: 100: 97: 24: 14: 13: 10: 9: 6: 4: 3: 2: 473: 462: 459: 457: 454: 453: 451: 437: 430: 427: 422: 416: 412: 405: 402: 395: 391: 388: 386: 383: 382: 378: 374: 373:Aplysiomorpha 370: 368: 364: 362: 358: 356: 355:Cephalaspidea 352: 351: 350: 347: 345: 341: 333: 329: 328: 322: 315: 308: 305: 303: 300: 299: 295: 293: 290: 289: 285: 282: 280: 277: 276: 272: 268: 266: 263: 262: 259:Ventral lobe 258: 256: 253: 252: 248: 245: 243: 240: 239: 235: 231: 229: 228:Neuroaciculum 226: 225: 221: 217: 214: 212: 211:Dorsal cirrus 209: 208: 204: 201: 200: 194: 192: 190: 185: 183: 179: 175: 171: 167: 163: 159: 155: 151: 147: 144:Parapodia in 139: 137: 134: 126: 125: 119: 112: 111: 105: 98: 96: 94: 90: 86: 82: 78: 74: 66: 62: 59: 55: 47: 43: 42: 36: 30: 19: 435: 429: 410: 404: 348: 337: 325: 301: 296:Dorsal lobe 291: 278: 265:Notoaciculum 264: 254: 242:Neurochaetae 241: 227: 210: 205:Description 186: 143: 130: 122: 109: 72: 64: 60: 53: 51: 40: 411:Polychaetes 367:Gymnosomata 361:Thecosomata 332:rhinophores 279:Notochaetae 255:Neuropodium 146:polychaetes 450:Categories 420:0198506082 396:References 340:gastropods 292:Notopodium 189:prostomium 178:Polynoidae 89:sea snails 54:parapodium 202:Component 150:uniramous 93:sea slugs 73:parapodia 48:specimen. 18:Notopodia 390:Annelida 379:See also 154:biramous 124:Arctonoe 77:annelids 67:, feet; 284:Chaetae 271:acicula 247:Chaetae 234:acicula 182:elytron 170:acicula 166:chaetae 162:ventral 148:can be 85:chaetae 81:lateral 417:  371:Clade 365:Clade 359:Clade 353:Clade 307:Cirrus 216:Cirrus 158:dorsal 220:scale 174:cirri 65:podia 415:ISBN 184:). 91:and 61:para 69:pl. 58:Gr. 452:: 71:: 423:. 56:( 31:. 20:)

Index

Notopodia
Parapodium (plant)

Lepidonotus oculatus
Museums Victoria
Gr.
annelids
lateral
chaetae
sea snails
sea slugs

Lepidonotus oculatus

Arctonoe
polychaete annelids
polychaetes
uniramous
biramous
dorsal
ventral
chaetae
acicula
cirri
Polynoidae
elytron
prostomium
Cirrus
scale
acicula

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