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Topic: Maxilliped


  
  Procambarus   (Site not responding. Last check: 2007-10-10)
The third maxillipeds are on the third thoracomere and are immediately anterior to the chelipeds.
The floor of the anterior half of this channel is made of the epipod of maxilliped 1 which separates the channel from the gills.
Maxilliped 1 has no gills but has the important epipod that encloses the exhalant water channel and the gill bailer.
www.lander.edu /rsfox/310ProcambarusLab.html   (5715 words)

  
 Glossary
Coxa (sing), coxae (pl): First or proximal article of leg or maxilliped and is the segment of the leg directly attached to the sternite of body.
Maxilliped: A pair of appendages situated posterior to the maxillae and derived from the first pair of thoracic appendages.
Each maxilliped consists of an inner lobe, outer lobe and a palp of two to four articles (although this can be reduced in some amphipod families).
www.amphipoda.com /glossary.html   (1248 words)

  
 References
In those Crustacea which have no such free fold but a cephalothoracic shield covering the cephalon and part or the whole of the thorax, this shield was interpreted as a carapace fold fused to the dorsum of the thorax and often overhanging its sides, for example, in lobsters and natantians.
Free dorsal folds in the Malacostraca are always attached to the posterior margin of a thoracic segment, and dorsal cephalothoracic shields are never formed as a result of the fusion of a cephalic carapace fold to the dorsum of the thorax.
In the Anaspidacea, Amphipoda and Isopoda, which have no branchiostegal folds behind the maxilliped segment, the external segmentation is retained in all segments behind it, and the same is the case with the segments behind the cephalothoracic shield in, for example, mysids and cumaceans.
crustacea.nhm.org /peet/conchostraca/references/showabstract.html?key=88   (541 words)

  
 Stomatopoda: Families - Odontodactylidae
Maxilliped 2 ischiomeral articulation subterminal; base of dactylus strongly inflated, dactylus with 1 large tooth and several small teeth.
Maxilliped 4 propodus ovoid, usually longer than broad, occasionally as long as broad.
Maxillipeds 3 and 4 propodi not ribbed "distally".
www.crustacea.net /crustace/stomatopoda/www/odonto.htm   (89 words)

  
 Decapod anatomy - Wikipedia, the free encyclopedia
The head also bears the (usually stalked) compound eyes.
Maxillipeds are legs modified to function as mounthparts.
Particularly in the less advanced decapods, these can be very similar to the pereiopods.
en.wikipedia.org /wiki/Maxilliped   (299 words)

  
 Inter Research » MEPS » v178 » p101-107
Ultrastructure of setae of the maxilliped of the marine planktonic copepod Temora stylifera
It was the goal of our study to determine the structures of potential sensors of setae on appendages of calanoids which are involved in the collection of food particles after these have been perceived at a distance from the gathering appendage(s).
Hydrodynamic sensors of the maxilliped are likely to be utilized when captured food particles have to be manipulated for ingestion or rejection.
www.int-res.com /abstracts/meps/v178/p101-107   (276 words)

  
 Home   (Site not responding. Last check: 2007-10-10)
Development of the maxilliped of 14 species of cyclopoid copepods from 14 genera in the families Cyclopinidae, Oithonidae and Cyclopidae is described.
Segment homologies are inferred from the assumption that homologous setae and arthrodial membranes are added during the same copepodid stage, and from a model of development that patterns the endopod proximally from the proximal of two endopodal segments present at the first copepodid stage.
For purposes of phylogenetic analyses, uncoupling the presence of the distal arthrodial membrane of a segment from the presence of its ventral seta and analyzing each separately may provide a better way of understanding evolutionary transformations of the limb than considering the segment as the basic structural unit of the limb.
www.soil.msu.ru /~ivanenko/paper3.html   (264 words)

  
 Stomatopoda: Families - Erythrosquillidae
Maxilliped 2 base of dactylus uninflated, dactylus with more than 3 large teeth.
Maxilliped 3 propodus subquadrate, about as long as broad.
Maxilliped 4 propodus subquadrate, about as long as broad.
www.crustacea.net /crustace/stomatopoda/www/erythro.htm   (86 words)

  
 AEPA - Ingolfiellidae World Catalogue   (Site not responding. Last check: 2007-10-10)
In addition, antennular accessory flagellum with 3 segments; maxilla 1 with 6 spines on the outer lobe and palp subequal to the outer lobe; maxilliped dactyl claw as a spine with flanking setae; pleopods as short fins; telson short and fleshy; uropod 1 outer ramus less than half the inner ramus.
Little about this genus is distinctive, aside from the vestigial mandibular palp, to mark it from other ingolfiellids, and its lack of lenticular organs to mark it from many (but not all) of the other large bodied cave-dwelling species of central Africa.
In addition, several homoplastic features typically prevail such as: maxilliped dactyl claw with a single seta; gnathopod 2 carpal saw with 7 teeth, dactyl as a spine; pereiopods 3-7 dactyls often produced with a spur.
www.science.uva.nl /onderzoek/cepa/ingolfiellideorumcatalogus.htm   (2259 words)

  
 Search Results for maxilliped - Encyclopædia Britannica
Food gathered by the posterior cirri is collected and passed to the mouthparts by anterior cirri modified to act as maxillipeds.
As it is pushed under an upper lip and into the mouth, the food is...
The fossil record of the Malacostraca extends from the early Paleozoic era (Early Ordovician epoch, 505 to 478 million years ago) to the present.
www.britannica.com /search?query=maxilliped&submit=Find&source=MWTAB   (239 words)

  
 Madagascar Genera Key
2 Third maxilliped ischium with distinct vertical sulcus; sternal sulcus s3/s4 Y-shaped, completely crossing sternum; terminal segment of mandibular palp bilobed, with a medium-sized, lobe-shaped, anterior process.
3 Exopod of third maxilliped lacking flagellum; ischium of third maxilliped wider than merus; adult male abdomen oval or egg-shaped.
3’ Exopod of third maxilliped with long flagellum; ischium of third maxilliped as wide as merus; adult male abdomen triangular.
www.nmu.edu /biology/Neil/MainFWC-website/MadagascarGeneraKey.html   (236 words)

  
 Spectral Tuning of Chemoreceptor Cells of the Third Maxilliped of the Lobster, Homarus americanus -- Corotto et al. 183 ...
Spectral Tuning of Chemoreceptor Cells of the Third Maxilliped of the Lobster, Homarus americanus -- Corotto et al.
Spectral Tuning of Chemoreceptor Cells of the Third Maxilliped of the Lobster, Homarus americanus
the maxillipeds is the broadest of all and resembles the tuning of the
www.biolbull.org /cgi/content/abstract/183/3/456   (294 words)

  
 West African Potamonautidae Key
The postfrontal crest is incomplete and does not meet the anterolateral margins.
The flagellum on the exopod of the third maxilliped is always missing.
- The flagellum on the exopod of the third maxilliped is always present.
www.nmu.edu /biology/Neil/MainFWC-website/WestAfricanGeneraKey.html   (215 words)

  
 Crayfish D-3a
These structures (which are involved in touch, taste and food-handling) are the exopodites of the first and second maxillipeds.
The third maxilliped on the right side of the crayfish is also visible, although the left third maxilliped has been removed.
Finally, note the position of the openings to the green glands; these excretory organs are also called antennal glands because they open at the base of the antennae.
bioweb.uwlax.edu /zoolab/Table_of_Contents/Lab-7b/Crayfish_D-3/Crayfish_D-3a/crayfish_d-3a.htm   (204 words)

  
 METAMORPHOSIS - Online Information article about METAMORPHOSIS
In the Crustacea, as has already been pointed out, many authors apply the term metamorphosis to the whole larval development, which consists of a series of changes leading to the adult form.
It also possesses stump-like rudiments of the maxillae and two anterior pairs of maxillipeds.
After the next moult it is known as a protozoaea (fig.
encyclopedia.jrank.org /MEC_MIC/METAMORPHOSIS.html   (3916 words)

  
 maxilliped - OneLook Dictionary Search
maxilliped : The American Heritage® Dictionary of the English Language [home, info]
Maxilliped : Online Plain Text English Dictionary [home, info]
maxilliped : Webster's Revised Unabridged, 1913 Edition [home, info]
www.onelook.com /?ls=b&fc=all_med&q=maxilliped   (144 words)

  
 28th Annual Eastern Fish Health Workshop
  Crabs were considered conscious if they were responsive to stimuli applied to the eyestalks and the third maxillipeds; these responses determine if the cerebral and thoracic ganglia, respectively, are still functioning.
The crabs retained their ocular and maxilliped reactions for most of this time, suggesting retention of consciousness.
Therefore the use of KCl should not be considered a humane method of killing in this species.
www.lsc.usgs.gov /fhb/workshops/28/40.htm   (382 words)

  
 Comparisons of Secondary Production, Life History, and Mouthpart Functional Morphology Between Two Populations of the ...   (Site not responding. Last check: 2007-10-10)
The greatest numbers of the smallest size classes of amphipod were present at Site 2 when the quantity of ash-free dry mass (AFDM) of wood and bark was greater than AFDM of leaf detritus.
Of nine mouthpart and foregut structures studied, three, the number of cuspidate setae on outer plates of maxillipeds, the length of the dactyl on maxilliped palps, and the number of hook setae on the foregut ampullae, were found to be correlated with body length.
Of these, rates of increase in maxilliped setae numbers and hook setae numbers were greater for immature than mature animals, and the number of hook setae for a given sized animal was generally greater for animals at Site 1 than Site 2.
scholar.lib.vt.edu /theses/OAI/cgi-bin/index.pl?verb=GetRecord&identifier=oai:VTETD:etd-36281972975650&metadataPrefix=oai_rfc1807   (370 words)

  
 IngentaConnect Interpreting segment homologies of the maxilliped of cyclopoid co...   (Site not responding. Last check: 2007-10-10)
IngentaConnect Interpreting segment homologies of the maxilliped of cyclopoid co...
Interpreting segment homologies of the maxilliped of cyclopoid copepods by comparing stage-specific changes during development
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www.ingentaconnect.com /content/urban/601/2001/00000001/00000002/art00009   (338 words)

  
 Arthropoda (Crustacea)   (Site not responding. Last check: 2007-10-10)
Thoracic appendages include 3 pair of maxillipeds and 5 pair of pereopods (walking legs).
Abdominal appendages include 5 pair of pleopods (swimmerets) and 1 pair of uropods.
Examine a specimen of Callinectes sapidus (blue crab) or Carcinus maenus (green crab).
www.angelfire.com /ak3/invertzoology/arthropodII.htm   (403 words)

  
 [No title]
The appendages of the crayfish have a similar structure and similar origin, but they have a different function.
To help you understand this principle, carefully remove an antenna, walking leg, maxilliped, and swimmeret with your forceps.
Straighten these out on a sheet of paper and draw them on a separate sheet of paper.
www1.dcsdk12.org /secondary/sgms/Departments/Science/CRAYFISHDISSECTION.doc   (697 words)

  
 [No title]
Order Isopoda - terrestrial, freshwater, and marine spp.; most common and familiar type are the pill bugs (terrestrial; aka roly-polies).
Order Decapoda - crayfish, lobsters, crabs, and true shrimp; have 3 pairs of maxillipeds and five pairs of walking legs, of which the first pair is modified into many types of pinchers forming the chelipeds.
h) 3rd maxilliped: touch taste, and food handling
www.ossm.edu /biology/iznotes3.htm   (432 words)

  
 Function and Functional Groupings of the Complex Mouth Apparatus of the Squat Lobsters Munida sarsi Huus and M. ...
1 coxa, maxilla 2 coxa, and maxilliped 1 coxa); 7, respiratory
2 and maxilliped 3 exopods); and 8, dorso-ventral mouthparts
(maxilla 1 endopod, maxilla 2 endopod, maxilliped 1 endopod,
www.biolbull.org /cgi/content/abstract/200/3/281   (328 words)

  
 Copepoda Lecture   (Site not responding. Last check: 2007-10-10)
, C = antenna 2, D = mandible, E = maxilla 1, F = maxilla 2, G = maxilliped.
Swimming legs of a calanoid copepod (Marshall and Orr, 1972).
By NVI the larva has all the mouthparts and thoracic appendages through P1, including the maxilliped.
www.lander.edu /rsfox/300copepodLec.html   (556 words)

  
 California Isopod Plates
Asellota: 21, Ianiropsis minuta, A, whole animal, B, maxilliped.
86, Idotea stenops, A, maxilliped, B, whole animal.
89, Synidotea berolzheimeri, A, maxilliped, B, whole animal.
tolweb.org /tree/eukaryotes/animals/arthropoda/crustacea/isopoda/accessory/caguide/caisoplates.html   (685 words)

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