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rakers with secondary projections. Because gill raker characters often vary between closely related taxa, they are commonly used in the classification and identification of fish species. Much of the variation in gill raker morphology is thought to be due to adaptation to optimize the consumption of different diets.
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that compose the fleshy part of the gill used for gas exchange. Rakers are usually present in two rows, projecting from both the anterior and posterior side of each gill arch. Rakers are widely varied in number, spacing, and form. By preventing food particles from exiting the spaces between the gill
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The structure and spacing of gill rakers in fish determines the size of food particles trapped, and correlates with feeding behavior. Fish with densely spaced, elongated, comb-like gill rakers are efficient at filtering tiny prey, whereas carnivores and omnivores often have more widely spaced gill
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73:. Since an appreciable fraction of this material was nutritious, rakers subsequently evolved as food-trapping mechanisms in filter feeders. Gill rakers, when long and closely set, play the same role in suspension-feeding fish such as
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To prevent the potentially damaging passage of solid material through the gill slits and over the gill filaments, early gill rakers strained large particles from the water and diverted them to the
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Bottom: Gill-rakers in cross section, showing angle at which hooks project from their point of attachment (water flow is downwards)
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153:"Gill Rakers Morphometry and Filtering Mechanism in some Marine Teleosts from Red Sea Coasts of Yemen"
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57:(gill arch) and are involved with suspension feeding tiny prey. They are not to be confused with the
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Top left: Gill-rakers attached to the branchial arch, showing the projecting rows of hooks (×50)
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Salman, Nadir A.; Al-Mahdawi, Ghaith J. and Hassan; Heba, M.A. (2005).
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arches, they enable the retention of food particles in filter feeders.
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Bony or cartilaginous processes that project from the branchial arch
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36:Top right: Hooks attached to the gill-raker (×180)
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756:Tradeoffs for locomotion in air and water
166:(Special Issue): 286–296. Archived from
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160:Egyptian Journal of Aquatic Research
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583:Electroreception and electrogenesis
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53:processes that project from the
267:Environmental impact of fishing
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352:intramembranous ossification
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731:Fin and flipper locomotion
701:Sequential hermaphroditism
588:Jamming avoidance response
305:
1295:
1247:Glossary of ichthyology
809:Diel vertical migration
613:Surface wave detection
578:Hydrodynamic reception
252:Diseases and parasites
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110:orange-spotted grouper
39:
751:Undulatory locomotion
568:Ampullae of Lorenzini
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99:filter-feeding whales
33:
979:Genetically modified
134:"Respiratory system"
114:Epinephelus coioides
784:Aquatic respiration
671:Life history theory
623:Weberian apparatus
117:
108:Gill rakers of an
40:
1327:
1326:
1237:Fish common names
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1147:
779:Aquatic predation
603:Capacity for pain
332:Age determination
173:on March 20, 2012
16:(Redirected from
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242:Ethnoichthyology
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661:Ichthyoplankton
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548:Digital Library
543:Teleost leptins
482:Shark cartilage
406:pharyngeal slit
401:pharyngeal arch
337:Anguilliformity
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55:branchial arch
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1287:more lists...
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51:cartilaginous
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1340:Fish anatomy
1316:
1304:
1204:spiny-finned
1153:Major groups
874:Intelligence
854:Scale eaters
799:Cleaner fish
681:Mouthbrooder
633:Reproduction
608:Schreckstoff
593:Lateral line
509:Swim bladder
499:Spiral valve
428:hyomandibula
411:pseudobranch
390:
294:Hypoxia in -
175:. Retrieved
168:the original
163:
159:
146:
137:
128:
113:
91:whale sharks
68:
64:
45:in fish are
42:
41:
1318:WikiProject
1277:Prehistoric
1261:Threatened
952:Other types
849:Sardine run
824:Forage fish
804:Corallivory
656:Development
641:Bubble nest
514:physoclisti
504:Suckermouth
477:Root effect
299:Ichthyology
43:Gill rakers
18:Gill rakers
933:Groundfish
928:Freshwater
923:Euryhaline
908:Coral reef
844:Salmon run
834:Paedophagy
736:Amphibious
723:Locomotion
531:pharyngeal
519:physostome
472:Photophore
418:Glossohyal
391:gill raker
374:dorsal fin
324:physiology
120:References
1182:chimaeras
1069:Predatory
1046:Salmonids
1004:Whitefish
994:Poisonous
969:Diversity
903:Coldwater
839:Predatory
829:Migratory
789:Bait ball
772:behaviour
691:Pregnancy
686:Polyandry
460:papillare
455:Operculum
450:Meristics
396:gill slit
359:Cleithrum
289:Fish kill
279:Fear of -
272:- as food
262:Fisheries
247:Evolution
237:Diversity
83:megamouth
71:esophagus
1334:Category
1306:Category
1257:Smallest
1170:lampreys
1133:flatfish
1123:Demersal
1079:mackerel
1074:billfish
1014:Commerce
943:Tropical
918:Demersal
913:Deep-sea
869:Venomous
761:RoboTuna
711:triggers
706:Spawning
666:Juvenile
651:Egg case
284:FishBase
1252:Largest
1165:hagfish
1160:Jawless
1138:pollock
1111:sardine
1106:herring
1101:anchovy
1051:Tilapia
1041:Octopus
1036:Catfish
1023:Farming
938:Pelagic
898:Coastal
885:habitat
741:Walking
646:Clasper
598:Otolith
560:systems
558:Sensory
492:ganoine
467:Papilla
318:Anatomy
257:Fishing
177:2 March
97:in the
87:basking
75:herring
1270:sharks
1187:sharks
1116:sprats
1096:Forage
1084:salmon
964:Coarse
746:Flying
618:Vision
573:Barbel
487:Scales
347:dermal
227:About
95:baleen
79:mullet
1232:Blind
1220:Lists
999:Rough
864:Sleep
770:Other
536:shark
526:Teeth
171:(PDF)
156:(PDF)
93:, as
1265:rays
1199:Bony
1192:rays
1089:tuna
1031:Carp
989:Oily
974:Game
959:Bait
893:Cave
676:Milt
381:Gill
369:Fins
342:Bone
229:fish
220:Fish
179:2013
89:and
47:bony
1128:cod
883:By
696:Roe
423:Jaw
321:and
49:or
1336::
164:31
162:.
158:.
136:.
112:,
101:.
85:,
81:,
77:,
212:e
205:t
198:v
181:.
140:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
