Larval morphology of the brooding clam Lasaea adansonii (Gmelin, 1791) (Bivalvia, Heterodonta, Galeommatoidea).

abstract：:Spermatozoa from representatives of the five insect orders in superorder Neuropteroidea were examined by electron microscopy following a new fixation method that includes tannic acid in the primary fixative but has uranyl acetate rather than osmium tetroxide as the secondary fixative. The sperm axoneme was found to be...

journal_title：Journal of morphology

authors： Afzelius BA,Dallai R

更新日期：1994-01-01 00:00:00

abstract：:The ultrastructure of the coxal glands and associated tissues in the centipedes Lithobius forficatus and Lithobius crassipes has been examined in the light of two contrasting functional hypotheses postulated by different authors. Lithobiomorph chilopods possess eight sets of pores on the posterioventral border of the ...

journal_title：Journal of morphology

authors： Littlewood PMH

更新日期：1983-08-01 00:00:00

abstract：:The lizard tail is well known for its ability to autotomize and regenerate. Physical contact of the tail by a predator may induce autotomy at the location at which the tail is grasped, and upon detachment the tail may undergo violent, rapid, and unpredictable movements that appear to be, to some degree, regulated by c...

journal_title：Journal of morphology

authors： Russell AP,Lai EK,Lawrence Powell G,Higham TE

更新日期：2014-09-01 00:00:00

abstract：:Ultrastructure and deposition of the cuticles secreted by embryos representing eight insect orders were examined by transmission and scanning electron microscopy. Embryos of the apterygote silverfish Thermobia domestica deposit two embryonic cuticles. Deposition of the first (EC1) is initiated at the beginning of appe...

journal_title：Journal of morphology

authors： Konopová B,Zrzavý J

更新日期：2005-06-01 00:00:00

abstract：:The study of the arterial arches of Bipes, the only amphisbaenian with forelimbs, resolves the problem of the interpretation of the structure of the arterial arches in other forms of this group of squamate reptiles. In Bipes, as in turtles, the subclavian and common carotid arteries originate from a brachiocephalic tr...

journal_title：Journal of morphology

authors： Renous D

更新日期：1985-05-01 00:00:00

abstract：:The interradicular periodontal ligament of mandibular molars contains an apparently unique dilated vessel straddling the interradicular alveolar bone. This structure is designated a venous ampulla. The vessel possesses a luminal length and width of approximately 200 X 100 microns, respectively. Ultrastructurally, the ...

journal_title：Journal of morphology

authors： Sims MR

更新日期：1987-03-01 00:00:00

abstract：:Micrabaciids are solitary, exclusively azooxanthellate deep-sea corals belonging to one of the deepest-living (up to 5,000 m) scleractinian representatives. All modern micrabaciid taxa (genera: Letepsammia, Rhombopsammia, Stephanophyllia, Leptopenus) have a porous and often very fragile skeleton consisting of two main...

journal_title：Journal of morphology

authors： Janiszewska K,Stolarski J,Benzerara K,Meibom A,Mazur M,Kitahara MV,Cairns SD

更新日期：2011-02-01 00:00:00

abstract：:This study examines the morphology of sporadic congenital microphthalmia in 1-day-old chicks, with particular emphasis on the neural retina. On the basis of the size of the eyeball it is possible to classify microphthalmia into two groups, severe and mild. In severe microphthalmia (less than 5 mm in equatorial diamete...

journal_title：Journal of morphology

authors： Ehrlich D,Stuchbery J,Zappia J

更新日期：1989-01-01 00:00:00

abstract：:Analysis of lateral and dorsoventral radiographic films shows that ingestion, transport, and mastication in Pedetes capensis (Rodentia) are cyclic and their movement patterns are essentially similar for the three food types offered. During the ingestion cycle, closing of the mouth is accompanied by a backward translat...

journal_title：Journal of morphology

authors： Offermans M,de Vree F

更新日期：1990-09-01 00:00:00

abstract：:The morphology of the upper, lower, and pharyngeal jaws is very similar among American cichlids. Common conditions are: (1) the presence of a premaxillary dentigerous arm shorter than the ascending arm (exceptions are Astronotus, Cichla, and Crenicichla semifasciata), (2) a narrow coulter area; in contrast, a broad co...

journal_title：Journal of morphology

authors： Casciotta JR,Arratia G

更新日期：1993-07-01 00:00:00

abstract：:The oval olfactory rosette of the carp Labeo rohita belongs to Burne's ('09) rosette column one or to Bateson's (1889) rosette type three. The total olfactory area of the fish is greater than its total retinal area; however, it has been classified with Teichmann's ('54) group of eye-nose fishes. Each olfactory chamber...

journal_title：Journal of morphology

authors： Ojha PP,Kapoor AS

更新日期：1973-05-01 00:00:00

abstract：:Oribatida are one of the main groups of Acari comprising mostly important decomposers in soils. Most species are particle feeders, an exceptional mode of nutrition in Arachnida. Hence, their feeding organs, the gnathosoma, are of special functional interest. We studied nearly all components using scanning and transmis...

journal_title：Journal of morphology

authors： Alberti G,Heethoff M,Norton RA,Schmelzle S,Seniczak A,Seniczak S

更新日期：2011-09-01 00:00:00

abstract：:Odontophoral cartilages are located in the molluscan buccal mass and support the movement of the radula during feeding. The structural diversity of odontophoral cartilages is currently known only from limited taxa, but this information is important for interpreting phylogeny and for understanding the biomechanical ope...

journal_title：Journal of morphology

authors： Golding RE,Ponder WF,Byrne M

更新日期：2009-05-01 00:00:00

abstract：:An extremely large number of fifth ceratobranchial teeth, with highly modified, striated, and hooked tips were observed in the central and western Pacific sicydiine goby genus Stiphodon.A scanning electron microscopic study of the form and arrangement of fifth ceratobranchial teeth was conducted to assess the distribu...

journal_title：Journal of morphology

authors： Parenti LR,Thomas KR

更新日期：1998-09-01 00:00:00

abstract：:Freshwater sponges of the family Spongillidae reproduce sexually through formation of a parenchymula larva. The cytochemical characteristics of parenchymula larval metamorphosis - beginning with the blastula and terminating with the motile escape stage - for the spongillid Eunapius fragilis (Leidy) have been defined u...

journal_title：Journal of morphology

authors： Harrison FW,Cowden RR

更新日期：1975-02-01 00:00:00

abstract：:Despite the attention squamate lizards have received in the study of digit and limb loss, little is known about limb morphogenesis in pentadactyl lizards. Recent developmental studies have provided a basis for understanding lizard autopodial element homology based on developmental and comparative anatomy. In addition,...

journal_title：Journal of morphology

authors： Leal F,Tarazona OA,Ramírez-Pinilla MP

更新日期：2010-11-01 00:00:00

abstract：:Histological and electron-microscopical studies of the head-kidney ontogenesis in a group of bottomspawner and mouthbrooder cichlid fishes reveal that this organ undergoes three functional and structural stages. At the initial stage, 2-12 days after fertilization, the head-kidney is a filtering organ of two glomeruli ...

journal_title：Journal of morphology

authors： Fishelson L

更新日期：1996-07-01 00:00:00

abstract：:Correlative studies of luminescent responses, light and electron microscopy of Porichthys photophores during development were conducted. The photophores differentiate as an outgrowth of the basal cell layer of the epidermis, from which they delaminate into the dermis. Reflector cells are formed from dermal fibroblasts...

journal_title：Journal of morphology

authors： Anctil M

更新日期：1977-03-01 00:00:00

abstract：:The olfactory epithelium and the vomeronasal organ of the Japanese striped snake were examined by lectin histochemistry. Of the 21 lectins used in the study, all lectins except succinylated-wheat germ agglutinin (s-WGA) showed similar binding patterns in the vomeronasal receptor cells and the olfactory receptor cells ...

journal_title：Journal of morphology

authors： Kondoh D,Yamamoto Y,Nakamuta N,Taniguchi K,Taniguchi K

更新日期：2010-10-01 00:00:00

abstract：:The spinotectal somatosensory projection was compared in normal, genetically eyeless, and embryonically manipulated salamanders. In normal animals, serotonin fluorescence was restricted to the intermediate tectalneuropil. This same region showed both high levels of serotonin uptake and somatosensory single unit electr...

journal_title：Journal of morphology

authors： Gruberg ER,Harris WA

更新日期：1981-10-01 00:00:00

abstract：:A comparative study of four genera of arvicolid rodents (Clethrionomys, Eothenomys, Alticola, and Synaptomys) presents the first complete description of limb myology for any member of this recently evolved, highly successful family. The study also identifies four forelimb and four hind-limb muscles that exhibit charac...

journal_title：Journal of morphology

authors： Stein BR

更新日期：1986-03-01 00:00:00

abstract：:Iridescent butterfly scales are structurally colored, relying upon the interaction of light with detailed architecture to produce their color. In some iridescent scales, the reflective elements are contained within the body of the scale and come in two basic forms, lattices that produce diffraction colors (analogous t...

journal_title：Journal of morphology

authors： Ghiradella H

更新日期：1989-10-01 00:00:00

abstract：:The innervation of the musculature of the tongue and the hyobranchial apparatus of caecilians has long been assumed to be simple and to exhibit little interspecific variation. A study of 14 genera representing all six families of caecilians demonstrates that general patterns of innervation by the trigeminal, facial, g...

journal_title：Journal of morphology

authors： Wake MH

更新日期：1992-04-01 00:00:00

abstract：:Bioluminescent organs have evolved many times within teleost fishes and exhibit a wide range of complexity and anatomical derivation. Although some bioluminescent organs have been studied in detail, the morphology of the bacterial light organs in glowbellies (Acropoma) is largely unknown. This study describes the anat...

journal_title：Journal of morphology

authors： Ghedotti MJ,Gruber JN,Barton RW,Davis MP,Smith WL

更新日期：2018-11-01 00:00:00

abstract：:The skull of the rare bolyeriid snake Casarea dussumieri is described in detail based on high-resolution X-ray CT data. Bolyeriids are unique in their possession of a separate suborbital ossification and a maxilla subdivided into two movably jointed parts, which may be the result of paedomorphic truncation of the deve...

journal_title：Journal of morphology

authors： Maisano JA,Rieppel O

更新日期：2007-05-01 00:00:00

abstract：:Complete postorbital bars, bony arches that encompass the lateral aspect of the eye and form part of a circular orbit, have evolved homoplastically multiple times during mammalian evolution. Numerous functional hypotheses have been advanced for postorbital bars, the most promising being that postorbital bars function ...

journal_title：Journal of morphology

authors： Heesy CP

更新日期：2005-06-01 00:00:00

abstract：:Ultrastructural studies of spermiogenesis and sperm morphology have found many characters that are likely to provide clues to the phylogeny of the Platyhelminthes. However, the lack of information on many free-living groups has been a limiting factor. There is a single description of the spermatogenesis and spermatozo...

journal_title：Journal of morphology

authors： Ponce de León R,Volonterio O

更新日期：2018-05-01 00:00:00

abstract：:The cytoarchitecture of nuclei in the preoptic area, ventral thalamus, dorsal thalamus, epithalamus, hypothalamus, posterior tuberculum, synencephalon, and pretectum and the accessory optic nuclei was analyzed in a perciform teleost, the sea bass Dicentrarchus labrax, by using serial sections stained with cresyl-viole...

journal_title：Journal of morphology

authors： Cerdá-Reverter JM,Zanuy S,Muñoz-Cueto JA

更新日期：2001-03-01 00:00:00

abstract：:Previous studies of squamate epidermal structure have focused on either histology and ultrastructure or oberhautchen surface texture as revealed by scanning electron microscopy (SEM). Using SEM data drawn from a variety of lizard taxa (primarily iguanids, but also agamids, chamaeleonids, and scincids), as well as amph...

journal_title：Journal of morphology

authors： Irish FJ,Williams EE,Seling E

更新日期：1988-07-01 00:00:00

abstract：:Electron microscopy of spermatogenesis in the Hawaiian red lobster, Enoplometopus occidentalis (Randall), has revealed unusual activity within membranous organelles. Mitochondria-like bodies (MLB-1) seen first in spermatogonia appear in primary spermatocytes to swell and fuse as the cytoplasm develops annulate lamella...

journal_title：Journal of morphology

authors： Haley SR

更新日期：1986-10-01 00:00:00