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133 results for “functional feed”
Figure 13 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 13. Summary of the main structures related with metapneustic respiratory system. A, Tropisternus latus (Brullé, 1837), spiracular chamber, first-instar larva, light microscope photograph, dorsal view. B, Helochares ventricosus Bruch, 1915, spiracular chamber, first-instar larva, light microscope photograph, dorsal view. C, Tropisternus latus (Brullé, 1837), spiracular chamber, first-instar larva, light microscope photograph, dorsal view. D, Helochares ventricosus Bruch, 1915, abdominal spiracle, first-instar larva, light microscope photograph, dorsal view. E–H, Tropisternus setiger Germar, 1824, SEM micrograph: E, spiracular chamber, third-instar larva, ventral view; F, detail of the terminal spiracle with dust filter, third-instar larva, ventral view; G, abdominal spiracle, first-instar larva, dorsal view; H, detail of the closed abdominal spiracles, first-instar larva, dorsal view. I, J, Oocyclus iguazu (Oliva 1996) third-instar larva, SEM micrograph: I, spiracular chamber, dorsal view; J, biforous abdominal spiracle, dorsal view. K, Laccobius kunashiricus Shatrovskiy, 1984, spiracular chamber, third-instar larva, SEM micrograph, dorsal view.
Figure 11 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 11. Summary of the main structures related with piercing-sucking feeding mechanism, SEM micrograph. A, B, Berosus sp., third-instar larva: A, lobular-mandibular coupling system, dorsal view; B, detail of lobular-mandibular coupling system, ventral view. C, Laccobius (Microlaccobius) sp., third-instar larva, left epistomal lobe, dorsal view.
Figure 10 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 10. Frame sequences of videos showing feeding behavior. A, Tropisternus latus Brullé, 1837, note that the larvae raise the head out of water while feeding. B, Hydrophilus (Dibolocelus) palpalis Brullé, 1837. C, Hemiosus dejeanii (Solier, 1849). D, Oocyclus magnifica Hebauer & Wang, 1998. See also Supporting Information, Videos S1–S4.
Figure 5 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 5. Labroclypeal region of larvae with chewing feeding system, SEM micrograph, dorsal view. A, Tropisternus acaragua Bachmann, 1969, first-instar larva. B, Hydrochara caraboides (Linnaeus, 1758), first-instar larva. C, Hydrophilus (Dibolocelus) palpalis Brullé, 1837, second-instar larva. D, Derallus paranensis Oliva, 1981, first instar larva. E, Helochares ventricosus Bruch, 1915, first-instar larva. F, Hydroglobus puncticolle Bruch, 1915, third-instar larva. G, Dactylosternum cacti (LeConte, 1855), third-instar larva. H, Cercyon quisquilius (Linnaeus, 1761), third-instar larva, white arrow indicates labroclypeal notch. Colours: light blue, frontoclypeal region; green, gFR1, group of sensilla of nasale; violet, gFR2, group of sensilla of epistomal lobe.
Figure 1 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 1. Head capsule of larvae with chewing (A–C) and piercing-sucking (D–I) feeding system, SEM micrograph, dorsal view. A, Hydrophilus (Dibolocelus) palpalis Brullé, 1837, second-instar larva. B, Tropisternus setiger Germar, 1824, firstinstar larva. C, Derallus paranensis Oliva, 1981, first instar larva. D, Berosus sp., third-instar larva. E, Hemiosus bruchi Knisch, 1924, third-instar larva. F, Oocyclus iguazu (Oliva 1996), third-instar larva. G, Laccobius kunashiricus Shatrovskiy, 1984, third-instar larva. H, Hybogralius hartmeyeri (Régimbart, 1908), third-instar larva, light microscope photograph. I, Epimetopus mendeli Fikáček et al. 2011, first-instar larva.
Figure 6 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 6. Labroclypeal region of Hemiosus larvae. A, B, Hemiosus bruchi Knisch, 1924, third-instar larva, SEM micrograph, dorsal view: A, labroclypeus; B, left epistomal lobe. C–E, Hemiosus multimaculatus (Jensen-Haarup, 1910), third-instar larva, dorsal view: C, left epistomal lobe, SEM micrograph; D, detail of gFR2 serrated setae, SEM micrograph; E, left epistomal lobe, light microscope photograph. Abbreviations: EpLb, epistomal lobe; NS, nasale. Colours: light blue, frontoclypeal region; green, gFR1, group of sensilla of nasale; violet, gFR2, group of sensilla of epistomal lobe.
Figure 9 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 9. Labium of larvae with chewing (A–B) and piercing-sucking (C–D) feeding system, dorsal view. A, Enochrus sp., first-instar larva, SEM micrograph. B, Derallus sp., first-instar larva, SEM micrograph. C, Berosus sp., third-instar larva, SEM micrograph. D, Oocyclus sapphirus Short & García, 2010, first-instar larva, light microscope photograph.
Figure 3. Piercing-sucking mandibles. A–C in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 3. Piercing-sucking mandibles. A–C, Berosus patruelis Berg, 1885, first-instar larva, SEM micrograph: A, left mandible, ventral view; B, detail of mandibular teeth, ventral view; C, right mandible, dorsal view. D–F, Laccobius hammondi Gentili, 1984, third-instar larva, SEM micrograph, dorsal view: D, left mandible; E, detail of mandibular teeth; F, right mandible. G–I, Oocyclus iguazu (Oliva, 1996) third-instar larva, SEM micrograph, dorsal view; G, left mandible; H, detail of mandibular teeth; I, right mandible.
Figure 4. Piercing-sucking mandibles. A–C in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 4. Piercing-sucking mandibles. A–C, Hybogralius hartmeyeri (Régimbart, 1908), third-instar larva, light microscope photographs, dorsal view: A, left mandible; B, detail of mandibular teeth; C, right mandible. D–F, Epimetopus mendeli Fikáček et al. 2011, first-instar larva, SEM micrograph, dorsal view: D, left mandible; E, detail of mandibular teeth; F, right mandible. Abbreviations: rc1, first retinaculum; rc2, second retinaculum; rc3, third retinaculum; pt, prostheca.
Figure 2 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 2. Chewing mandibles, SEM micrograph, dorsal view. A, Derallus sp., first-instar larva. B, Enochrus sp., firstinstar larva. C, Tropisternus sp., second-instar larva. D, Hydrophilus (Dibolocelus) palpalis Brullé, 1837, first-instar larva. E, Dactylosternum cacti (LeConte, 1855), third-instar larva. F, Cercyon quisquilius (Linnaeus, 1761), third-instar larva. Abbreviations: rc1, first retinaculum; rc2, second retinaculum; rc3, third retinaculum.
Figure 7 in REVIEW Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
Figure 7. Labroclypeal region of Laccobius larvae. A, B, Laccobius kunashiricus Shatrovskiy, 1984, third-instar larva, SEM micrograph, dorsal view: A, labroclypeus; B, left epistomal lobe. C–E, Laccobius (Microlaccobius) sp., third-instar larva, SEM micrograph, dorsal view: C, left epistomal lobe; D; detail of gFR2 setae; E, seta-like cuticular projections of the latero-ventral membranous lobe. Abbreviations: EpLb, epistomal lobe; NS, nasale. Colours: light blue, frontoclypeal region; green, gFR1, group of sensilla of nasale; violet, gFR2, group of sensilla of epistomal lobe.
Feeding in the Devonian antiarch placoderm fishes: a study based upon morpho-functional analysis of jaws
<p><span>Antiarch placoderm fishes were an abundant component of the Middle Paleozoic vertebrate assemblages. Despite a large number of known taxa and specimens, the morphology and function of the skeletal elements of their jaws is inadequately known. Because of this, questions regarding their feeding modes and their roles in the trophic webs remains open. We present a skeleto-muscular model of the antiarch jaw apparatus with an attempt to reconstruct its potential biomechanical function. The position of the upper jaw suborbital bones within the plane of the ventral side of the fish armor is suggested to represent the natural 'mouth closed' position. During mouth opening the suborbitals rotated rostrally with simultaneous depression and inward rotation of the infragnathals. The ball-and-socket jaw articulation might ensure this combined movement. Recently described lower jaw elements of <em>Livnolepis zadonica</em> (Obrucheva, 1983) and <em>Bothriolepis</em> sp. from the Upper Devonian (Lower Famennian) of Central Russia demonstrating very deep and porous blades of the oral division of the infragnathals attracted attention as to the structure of these bones in other antiarchs. Observed porosity reflects intense vascularization to supply blood to a connective tissue underlying a supposed keratinous sheath, which protected and strengthened the jaws, as well as made possible scraping tough food objects, such as thallus algae, from the substrate. </span></p> <p><span>Having evolved during the Silurian in the Pan-Cathaysian zoogeographical province, antiarchs migrated to Gondwana during the Emsian and later to Euramerica during the Eifelian. Supposedly, antiarchs became the first macrophytophagous vertebrates occupying the trophic level of primary consumers during the late Silurian – early Devonian. This event diversified the only previously existing predator-prey interrelationships between filter-feeding agnathans and predatory gnathostomes. </span></p>
Functionalized ionic liquid coatings in the Pd-catalyzed selective hydrogenation of acetylene in ethylene-rich feeds
<p>Raw data and python script as well as instructions for data evaluation</p>
FIGURES 125–135 in Immature stages of the Rubiaceae-feeding metalmark butterflies (Lepidoptera: Riodinidae), and a new function for the tentacle nectary organs
FIGURES 125–135. Immature stages of Semomesia croesus lacrimosa. 125, egg day 1; 126, egg day 4; 127, first instar premoult; 128, second instar; 129, third instar; 130, dorsal view of abdominal setae in the fourth instar; 131, fifth (last) instar; 132, prepupa in dorsal view; 133, prepupa in ventral view; 134, pupa in dorsal view; 135, pupa in lateral view.
FIGURES 116–124 in Immature stages of the Rubiaceae-feeding metalmark butterflies (Lepidoptera: Riodinidae), and a new function for the tentacle nectary organs
FIGURES 116–124. Immature stages of Leucochimona icare matatha. 116–117, host plant Manettia luteo-rubra (Rubiaceae), detail of climbing part with flowers (116) and vegetative part (117) near to the ground, showing the typical larval feeding damage (arrows); 118, recently oviposited egg; 119, first instar in dorsal view; 120, third instar in lateral; 121, fourth (last) instar in lateral view; 122, fourth (last) instar in dorsal view; 123, pupa in dorsal view; 124, pupa in lateral view. Photos (121– 124) by LL Mota.
FIGURES 105–115 in Immature stages of the Rubiaceae-feeding metalmark butterflies (Lepidoptera: Riodinidae), and a new function for the tentacle nectary organs
FIGURES 105–115. Immature stages of Leucochimona icare icare. 105, recently oviposited egg; 106, first instar; 107, second instar; 108, third instar; 109, fourth instar; 110–111, fifth (last) instar in dorsal (110) and ventral (111) views; 112–113, prepupa in dorsal (112) and lateral (113) views; 114, pupa in dorsal view; 115, pupa in lateral (left) and ventral (right) view.
FIGURES 93–104 in Immature stages of the Rubiaceae-feeding metalmark butterflies (Lepidoptera: Riodinidae), and a new function for the tentacle nectary organs
FIGURES 93–104. Immature stages of Leucochimona lagora. 93, recently oviposited egg; 94, larva emerging from egg; 95, first instar; 96, second instar channeling leaf underside (arrows); 97, fourth instar in lateral view; 98, fifth (last) instar in dorsal view; 99, prepupa; 100, detail of segment A8 in dorsal view in the last instar, arrow indicating tentacle nectary organs (TNO); 101, pupa, individual with light wing case; 102, pupa, with dark wing case; 103, pupa in dorsal view; 104, pupa in ventral view.
FIGURES 72–82 in Immature stages of the Rubiaceae-feeding metalmark butterflies (Lepidoptera: Riodinidae), and a new function for the tentacle nectary organs
FIGURES 72–82. Immature stages of Mesosemia thymetus thymetina. 72, recently laid egg; 73, egg at day 7; 74, hatched egg shell; 75, first instar; 76, second instar, note channel cut in the leaf (arrows); 77, second instar, showing everted TNO in response to a Monomorium floricola ant approach; 78, third instar in premoult; 79, fourth instar; 80, fifth (last instar); 81, prepupa; 82, pupa in lateral, dorsal and ventral views, from the top to bottom, respectively.
FIGURES 83–92 in Immature stages of the Rubiaceae-feeding metalmark butterflies (Lepidoptera: Riodinidae), and a new function for the tentacle nectary organs
FIGURES 83–92. Immature stages of Mesosemia walteri. 83, egg; 84, first instar; 85 first (above) and second instar (below); 86, third instar in dorsal view; 87, fourth instar in dorsal view; 88, last instar in lateral view; 89, detail of abdominal tegument in dorsal view showing dorsal setae on verrucae; 90, last instar dorsal view, note the TNOs everted (arrow); 91, prepupa in lateral view; 92 pupa in dorsal (left) and lateral (right) views.
FIGURES 63–71 in Immature stages of the Rubiaceae-feeding metalmark butterflies (Lepidoptera: Riodinidae), and a new function for the tentacle nectary organs
FIGURES 63–71. Scanning electron micrographs of the fifth (last) instar (63–68) and pupa (69–71) of Mesosemia cippus. 63, head capsule and prothorax in latero-frontal view; 64, drop-like setae on frontoclypeus, arrow indicating perforated cupola organs (PCOs); 65, detail of long dorsal setae on A5; 66, cluster of PCOs (arrows) on A2; 67, segment A8 in lateral view, showing everted tentacle organ, dorsal setae and spiracle; 68, proleg in lateral view; 69, mesothoracic spiracle; 70, segments A1–A2 in lateral view, note the silk girdle (arrow); 71, cluster of PCOs on A1.
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