Larval development of japanese “conchostracans”: Part 3, larval development oflynceus biformis(crustacea, branchiopoda, laevicaudata) based on scanning electron microscopy and fluorescence microscopy

2012 ◽  
Vol 274 (2) ◽  
pp. 229-242 ◽  
Author(s):  
Jørgen Olesen ◽  
Martin Fritsch ◽  
Mark J. Grygier
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fluorescence Microscopy ◽  
Larval Development ◽  
Scanning Electron

Larval Development in Peltogasterella Studied by Scanning Electron Microscopy (Crustacea: Cirripedia: Rhizocephala)

2002 ◽  
Vol 241 (3) ◽  
pp. 199-221 ◽  
Author(s):  
Alexey V. Rybakov ◽  
Olga M. Korn ◽  
Jens T. Høeg ◽  
Dieter Waloszek
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Larval Development ◽  
Scanning Electron

scholarly journals Larval development of Chthamalus malayensis (Cirripedia: Thoracica) reared in the laboratory

2001 ◽  
Vol 81 (4) ◽  
pp. 623-632 ◽  
Author(s):  
Yan Yan ◽  
Benny K.K. Chan
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Hong Kong ◽  
Light Microscopy ◽  
Larval Development ◽  
Previous Description ◽  
Morphological Differences ◽  
Present Description ◽  
Cephalic Shield ◽  
Scanning Electron

Larvae of Chthamalus malayensis (Cirripedia: Thoracica) from Hong Kong were cultured in the laboratory. Larval development includes six naupliar stages and a non-feeding cypris stage. Larvae reached the cypris stage in 20 d at ∼21°C compared to 14 d at ∼28°C. Morphological features including the cephalic shield, frontal horns, labrum, abdominal process, antennules, antennae and mandibles in all nauplius and cypris stages were described and illustrated using a combination of light microscopy and scanning electron microscopy. Attempts were made to compare morphological differences between the nauplii and cyprid of C. malayensis with those of other Chthamalus species including C. stellatus, C. montagui, C. dentatus, C. fragilis, C. dalli, C. antennatus, C. fissus and C. challengeri. The present description of the nauplii of C. malayensis is not in agreement with the previous description of this species.

Larval development of the barnacle Ibla cumingi (Cirripedia: Pendunculata: Iblidae) reared in the laboratory

2005 ◽  
Vol 85 (4) ◽  
pp. 903-907 ◽  
Author(s):  
Yan Yan ◽  
Chen Haoru ◽  
Huang Liangmin ◽  
Sun Lihua
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Larval Development ◽  
Development Model ◽  
Daya Bay ◽  
Morphological Description ◽  
The Difference ◽  
Cephalic Shield ◽  
Scanning Electron

Larvae of Ibla cumingi from Daya Bay, China were cultured in the laboratory. Larval development includes six naupliar stages and a non-feeding cypris stage following the ground patterns of cirripeds. Larvae reached the cypris stage in nine days at ∼25°C after hatching. Morphological features including the cephalic shield, frontal horns, labrum, abdominal process, antennules, antennae and mandibles in all nauplii were described and illustrated using light microscopy. A full morphological description of cyprid larvae was provided using scanning electron microscopy. Attempts were made to compare the difference between the larval development model of I. cumingi and that of Ibla species.

Post-larval development of the bivalves Nucula turgida, Venus striatula, Spisula subtruncata and S. elliptica (Mollusca: Bivalvia), (with reference to the late larva)

1987 ◽  
Vol 67 (2) ◽  
pp. 441-459 ◽  
Author(s):  
C. M. Webb
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Larval Development ◽  
Shell Morphology ◽  
Larval Shell ◽  
North West ◽  
Scanning Electron ◽  
West European

Detailed studies of post-larval shell, hinge and/or internal morphogenesis, from metamorphosis to the completion of development, are available for a very small number of infaunal bivalves (for review of studies see Webb (1984). This paper continues the description, using scanning electron microscopy (SEM), of the post-larval ontogeny of some common infaunal bivalves from north-west European communities and presents the development of Nucula turgida, Venus striatula, Spisula subtruncata and S. elliptica. The association between larval shell morphology and certain features of development in some protobranch bivalves is examined.

Post-Larval Development of the Tellinacean Bivalves Abra Alba, Tellina Fabula and Donax Vittatus (Mollusca: Bivalvia), With Reference to the Late Larva

1986 ◽  
Vol 66 (3) ◽  
pp. 749-762 ◽  
Author(s):  
C. M. Webb
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Larval Development ◽  
Shell Length ◽  
Larval Shell ◽  
Larval Form ◽  
Scanning Electron ◽  
Morphogenetic Change

The post-larval shell and hinge development of the bivalves Abra alba (Wood), Tellina fabula Gmelin and Donax vittatus (da Costa) from the recently metamorphosed size to a juvenile size of 1·2–1·4 mm shell length has been examined using scanning electron microscopy. Early post-larval development in the stages up to 1·0–1·2 mm size can involve considerable morphogenetic change and requires careful description with photographic developmental series. The form of the pediveliger larva is present in the early post-larval shell and confirms the identity of the larvae of A. alba and T. fabula. The veliger and pediveliger larvae of A. alba are described. The similar larval form of the tellinacean bivalves is modified by differential margin growth early in post-larval development. Comparison of these bivalves with allied species reveals that the post-larvae are distinguishable at even the smallest sizes by the shell and hinge form. The metamorphic size of A. alba ranges from 0·26 to 0·31 mm, of T. fabula from 0·25 to 0·28 mm and of D. vittatus from 0·25 to 0·35 mm. The bivalve post-larvae were collected from the shallow sublittoral of Oxwich Bay, Bristol Channel, U.K., and the larvae from the overlying waters, during the years 1980–2.

scholarly journals Removal of Composite Restoration from the Root Surface in the Cervical Region Using Er: YAG Laser and Drill—In Vitro Study

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3027 ◽  
Author(s):  
Wojciech Zakrzewski ◽  
Maciej Dobrzynski ◽  
Piotr Kuropka ◽  
Jacek Matys ◽  
Malgorzata Malecka ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Composite Material ◽  
Fluorescence Microscopy ◽  
High Speed ◽  
Root Surface ◽  
Cervical Region ◽  
Tooth Surface ◽  
Yag Laser ◽  
Scanning Electron

Background: Recently, the defects of the tooth surface in the cervical region are often restored using composite filling materials. It should meet the needs of the patients regarding esthetics and material stability. The aim of the study was to analyze the tooth root surface at the cervical region after the removal of the composite filling material by means of the Erbium-doped Yttrium Aluminium Garnet (Er: YAG) laser or drill using the scanning electron microscopy (SEM) and fluorescence microscopy. Materials and Methods: For the purposes of this study, 14 premolar teeth (n = 14) were removed due to orthodontic reasons. The rectangular shape cavities with 3 mm in width and 1.5 mm in height were prepared with a 0.8 mm bur on high-speed contra-angle in the tooth surface just below cemento-enamel junction (CEJ) and filled with the composite material. The composite material was removed with the Er: YAG laser at a power of 3.4 W, energy 170 mJ, frequency 20 Hz, pulse duration 300 μs, tip diameter 0.8 mm, air/fluid cooling 3 mL/s, and time of irradiation: 6 sec, at a distance from teeth of 2 mm (G1 group, n = 7) or a high-speed contra-angle bur (G2 group, n = 7). After the removal of composite material, the surfaces of teeth were examined using the scanning electron microscopy (SEM) and fluorescence microscopy. Results: The Er: YAG irradiation allowed to remove completely the composite material from the tooth cavity. The study confirmed, that the ends of collagen fibers were only partially denatured after the Er: YAG laser application. Conclusion: It has been proved that using the Er: YAG laser is an effective and safe method of composite removal for the dentin surface.

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