Knowledge

Parapodium

Source 📝

107: 93: 310: 24: 124:
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.
180:, which can result in the modification of those parapodia, loss of chaetae and elongation of the cirri into anterior-facing tentacular cirri. 157:(neurochaetae and notochaetae respectively), which are highly specific and greatly diversified. A single stout internal chaeta, called an 96:
An image plate showing the different anatomical features (dashed outline) of a representative annelid parapodium. Parapodium is from
116:
sp. showing the internal acicula that support the two lobes of the parapodium. This parapodium is from a Museums Victoria specimen.
335:. Some sea hares use their parapodia to swim. Parapodia can even be used for respiration (similar to gills) or for locomotion. 407: 161:, may be present in each lobe, which are used to support well-developed parapodia. Notopodia and neuropodia can also bear 69: 449: 106: 444: 315: 425:
Polychaetes and Allies: the Southern Synthesis - Class Polychaeata: Definition and General Description
165:
which are tentacle-like projections of the parapodia. In some groups, such as the scale worms (e.g.
64:) refers to lateral outgrowths or protrusions from the body. Parapodia are predominantly found in 373: 208: 170: 17: 403: 295: 204: 162: 146: 92: 34: 309: 332: 176:
In most species, the anteriormost segments may be specialised into the head region and
46: 23: 438: 361: 343: 355: 349: 134: 97: 28: 320: 177: 166: 121: 328: 138: 77: 378: 142: 112: 81: 153:
lobes neuropodia. Both neuropodia and notopodia may possess a bundle of
259: 222: 158: 150: 65: 338:
Parapodia are found in the following taxonomic groups of gastropods:
272: 235: 154: 73: 331:
are also called parapodia. They are particularly well-developed in
308: 105: 91: 22: 33:, with a microscope image of one of its parapodia (inset). 110:
Microscope photograph of a parapodium from a specimen of
207:
extending from the notopodium; can be modified into a
84:, 'parapodium' refers to lateral fleshy protrusions. 313:
Dorsal view of a freshly collected intact sea slug,
327:The fleshy protrusions on the sides of some marine 169:), the dorsal cirrus is modified into a scale (or 141:(consisting of one lobe or ramus) but are usually 145:(two lobes or rami). In the latter case, the 8: 427:. Melbourne: CSIRO Publishing. pp. 1–3. 398:Rouse, Greg; Pleijel, Frederick (2001). 187: 184:Glossary of components of the parapodium 423:Hutchings, P. A.; Fauchald, K. (2000). 390: 7: 402:. Oxford: Oxford University Press. 149:lobes are called notopodia and the 102:and is a Museums Victoria specimen. 68:, where they are paired, unjointed 57: 258:Stout internal supporting chaeta ( 221:Stout internal supporting chaeta ( 14: 298:extending from the neuropodium 1: 211:(or elytron) in scale worms. 16:For the genus of plants, see 41:In invertebrates, the term 466: 15: 72:outgrowths that bear the 27:Specimen of the annelid, 316:Plakobranchus ocellatus 76:. In several groups of 324: 225:) for the neuropodium 117: 103: 38: 312: 262:) for the notopodium 109: 95: 52:, beyond or beside + 26: 319:, showing its head, 99:Lepidonotus oculatus 30:Lepidonotus oculatus 305:Gastropod parapodia 238:of the neuropodium 129:General description 122:polychaete annelids 374:Epitoke parapodium 325: 275:of the notopodium 118: 104: 39: 18:Parapodium (plant) 450:Gastropod anatomy 302: 301: 88:Annelid parapodia 457: 429: 428: 420: 414: 413: 395: 188: 120:Most species of 59: 35:Museums Victoria 465: 464: 460: 459: 458: 456: 455: 454: 445:Annelid anatomy 435: 434: 433: 432: 422: 421: 417: 410: 397: 396: 392: 387: 370: 333:sea butterflies 307: 186: 131: 90: 21: 12: 11: 5: 463: 461: 453: 452: 447: 437: 436: 431: 430: 415: 408: 389: 388: 386: 383: 382: 381: 376: 369: 366: 365: 364: 358: 352: 346: 323:and parapodia. 306: 303: 300: 299: 293: 291:Ventral cirrus 287: 286: 283: 277: 276: 270: 264: 263: 256: 250: 249: 246: 240: 239: 233: 227: 226: 219: 213: 212: 202: 196: 195: 192: 185: 182: 130: 127: 89: 86: 13: 10: 9: 6: 4: 3: 2: 462: 451: 448: 446: 443: 442: 440: 426: 419: 416: 411: 405: 401: 394: 391: 384: 380: 377: 375: 372: 371: 367: 363: 362:Aplysiomorpha 359: 357: 353: 351: 347: 345: 344:Cephalaspidea 341: 340: 339: 336: 334: 330: 322: 318: 317: 311: 304: 297: 294: 292: 289: 288: 284: 282: 279: 278: 274: 271: 269: 266: 265: 261: 257: 255: 252: 251: 248:Ventral lobe 247: 245: 242: 241: 237: 234: 232: 229: 228: 224: 220: 218: 217:Neuroaciculum 215: 214: 210: 206: 203: 201: 200:Dorsal cirrus 198: 197: 193: 190: 189: 183: 181: 179: 174: 172: 168: 164: 160: 156: 152: 148: 144: 140: 136: 133:Parapodia in 128: 126: 123: 115: 114: 108: 101: 100: 94: 87: 85: 83: 79: 75: 71: 67: 63: 55: 51: 48: 44: 36: 32: 31: 25: 19: 424: 418: 399: 393: 337: 326: 314: 290: 285:Dorsal lobe 280: 267: 254:Notoaciculum 253: 243: 231:Neurochaetae 230: 216: 199: 194:Description 175: 132: 119: 111: 98: 61: 53: 49: 42: 40: 29: 400:Polychaetes 356:Gymnosomata 350:Thecosomata 321:rhinophores 268:Notochaetae 244:Neuropodium 135:polychaetes 439:Categories 409:0198506082 385:References 329:gastropods 281:Notopodium 178:prostomium 167:Polynoidae 78:sea snails 43:parapodium 191:Component 139:uniramous 82:sea slugs 62:parapodia 37:specimen. 379:Annelida 368:See also 143:biramous 113:Arctonoe 66:annelids 56:, feet; 273:Chaetae 260:acicula 236:Chaetae 223:acicula 171:elytron 159:acicula 155:chaetae 151:ventral 137:can be 74:chaetae 70:lateral 406:  360:Clade 354:Clade 348:Clade 342:Clade 296:Cirrus 205:Cirrus 147:dorsal 209:scale 163:cirri 54:podia 404:ISBN 173:). 80:and 50:para 58:pl. 47:Gr. 441:: 60:: 412:. 45:( 20:.

Index

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
Chaetae

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.