Morphology of skin incubation in Pipa carvalhoi (Anura: Pipidae).

abstract：:A chromatolysis study, 14 to 21 days following denervation, showed the spinal cord representation of the nerve to the posterior latissimus dorsi muscle to be in the ventrolateral cell column between cervical ganglia 14 and 15. to characterize cevical neruos nt undergoing chromatolysis, histochemical stuies were done t...

journal_title：Journal of morphology

authors： Sansone FM,Lebeda FJ

更新日期：1975-10-01 00:00:00

abstract：:The fiber constituents and connections of the calyces - the input-receiving regions - of the corpora pedunculata ("mushroom bodies") were studied in reduced silver preparations from the American cockroach, Periplaneta americana (L.). In the outer synaptic layer of the calyces five fiber classes were distinguished, the...

journal_title：Journal of morphology

authors： Weiss MJ

更新日期：1974-01-01 00:00:00

abstract：:Formation of the first epidermal layers in the embryonic scales of the lizard Lampropholis guichenoti was studied by optical and electron microscopy. Morphogenesis of embryonic scales is similar to the general process in lizards, with well-developed overlapping scales being differentiated before hatching. The narrow o...

journal_title：Journal of morphology

authors： Alibardi L,Thompson MB

更新日期：1999-08-01 00:00:00

abstract：:Mengenillidae is a small, basal family of Strepsiptera, mainly characterized by free-living females in contrast to the endoparasitic females of Stylopidia. Here, we describe external and internal structures of the female abdomen of Eoxenos laboulbenei (Mengenillidae). The external morphology was examined and documente...

journal_title：Journal of morphology

authors： Tröger D,Beutel RG,Pohl H

更新日期：2019-05-01 00:00:00

abstract：:The common snook, Centropomus undecimalis, was induced to ovulate using a time-release, GnRH analogue. Ovulation occurred the afternoon or evening the day after hormone administration. The time of ovulation was established within half an hour. At ovulation, three fish per time-group were divided into 0, 6, 12, 18 hr a...

journal_title：Journal of morphology

authors： Grier HJ,Neidig CL,Quagio-Grassiotto I

更新日期：2017-04-01 00:00:00

abstract：:The coiled shell of gastropods begins as a cap-shaped lens of organic and calcified material that covers the posterior dorsal side of the larva. During development the cap enlarges to cover the larval visceral mass. Marginal growth then produces the characteristic coiled shell. One model of the initiation of shell coi...

journal_title：Journal of morphology

authors： Collin R,Voltzow J

更新日期：1998-01-01 00:00:00

abstract：:The feeding mechanisms of two labrid fishes (Cheilinus chlorurus and C. diagrammus: Labridae: Perciformes) are modeled using four-bar linkage theory from mechanical engineering. The actions of the feeding mechanisms are simulated by a computer program that uses morphometric data to calculate the geometry of mechanism ...

journal_title：Journal of morphology

authors： Westneat MW

更新日期：1990-09-01 00:00:00

abstract：:The ventral surface of the most proximal tarsomere of each mesothoracic leg of the female black fly, Simulium venustum Say, bears approximately 60 bifurcate sensilla. Externally, a sensillum appears as a hair set into an asymmetric socket and with the distal tip flattened into two flared lobes. A single pore opens int...

journal_title：Journal of morphology

authors： McIver S,Siemicki R,Sutcliffe J

更新日期：1980-07-01 00:00:00

abstract：:A survey of skeletal muscles throughout craniates shows basic kinds of myosin filament arrangement, simple-lattice and superlattice, within the A-band of each sarcomere. Distribution of simple- and superlattice arrangements across a phylogeny of craniates suggests that the superlattice arrangement is primitive and tha...

journal_title：Journal of morphology

authors： Luther PK,Squire JM,Forey PL

更新日期：1996-09-01 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：:Nuclear and cytoplasmic volume changes as well as the elimination of residual spermatid cytoplasm were investigated in the red-ear turtle (Pseudemys scripta) and the rooster (Gallus domesticus). Nuclei of newly formed spermatids which were originally centrally located became eccentrically located within the cell in bo...

journal_title：Journal of morphology

authors： Sprando RL,Russell LD

更新日期：1988-10-01 00:00:00

abstract：:The penises of bats are taxonomically distinctive in size and shape. In addition, they are variable in microscopic anatomy, indicating that histomorphological studies of copulatory organs of bats may help understanding their successful reproductive strategies. We studied adult males of 13 species of vespertilionid and...

journal_title：Journal of morphology

authors： Jubilato FC,Comelis MT,Bueno LM,Taboga SR,Góes RM,Morielle-Versute E

更新日期：2019-12-01 00:00:00

abstract：:Atretic follicles of the ovary of the Indian pied myna (Sturnus contra contra) were studied in birds collected each month throughout the year. Histological examination included histochemical techniques for 3β-hydroxy-steroid dehydrogenase (3β-HSDH) and for lipids. Atretic follicles were mainly of two types: nonburstin...

journal_title：Journal of morphology

authors： Gupta SK,Maiti BR

更新日期：1986-12-01 00:00:00

abstract：:Scanning electron microscopy reveals that the flat tongue of Platemys pallidipectoris has shallow grooves and no lingual papillae. The surface of the tongue is covered with dome-shaped bulges, each corresponding to a single cell. Short microvilli are distributed over the cell surface. Light microscopy shows a stratifi...

journal_title：Journal of morphology

authors： Beisser CJ,Weisgram J,Splechtna H

更新日期：1995-12-01 00:00:00

abstract：:The structural organization of the spermatozoon from the Eurasian beaver, Castor fiber (Family: Castoridae), was determined and compared to that of other sciuromorph rodents. The beaver spermatozoon has a head, which is variable in form but usually paddle-shaped, with a small nucleus and very large acrosome, and a tai...

journal_title：Journal of morphology

authors： Bierla JB,Gizejewski Z,Leigh CM,Ekwall H,Söderquist L,Rodriguez-Martinez H,Zalewski K,Breed WG

更新日期：2007-08-01 00:00:00

abstract：:This study details the gross and microscopic anatomy of the pelvic kidney in male Ambystoma maculatum. The nephron of male Ambystoma maculatum is divided into six distinct regions leading sequentially away from a renal corpuscle: (1) neck segment, which communicates with the coelomic cavity via a ventrally positioned ...

journal_title：Journal of morphology

authors： Siegel DS,Sever DM,Aldridge RD

更新日期：2010-12-01 00:00:00

abstract：:A hitherto unknown sensillum type, the "intracuticular sensillum" was identified on the dactyls of the walking legs of the shore crab, Carcinus maenas. Each sensillum is innervated by two sensory cells with dendrites of "scolopidial" (type I) organization. The ciliary segment of the dendrite is 5-6 μm long and contain...

journal_title：Journal of morphology

authors： Schmidt M

更新日期：1990-06-01 00:00:00

abstract：:The role of dying cells in the optic stalk in relation to retinal fiber migration was investigated in the chick embryo. Cell death was analysed at various stages of development by counting pycnotic nuclei and also by the Gomori acid phosphatase reaction, while nerve fibers were visualised by the Bodian method. A wave ...

journal_title：Journal of morphology

authors： Ulshafer RJ,Clavert A

更新日期：1979-10-01 00:00:00

abstract：:The architectural ground plan of beetle and other insect midguts is represented by a monolayer of epithelial cells arranged in a cylindrical configuration. Proliferation and differentiation of regenerative cells maintain the integrity of this monolayer in the face of continual losses of individual cells through cytopl...

journal_title：Journal of morphology

authors： Nardi JB,Bee CM

更新日期：2012-09-01 00:00:00

abstract：:The cytoarchitecture and neuronal morphology of the torus semicircularis in the red-eared turtle, Chrysemys scripta elegans, were examined in Nissl-stained and Golgi-impregnated material. The torus semicircularis begins in the caudodorsal mesencephalon and extends rostrally and laterally to end ventrally to the tectal...

journal_title：Journal of morphology

authors： Browner RH,Kennedy MC,Facelle T

更新日期：1981-08-01 00:00:00

abstract：:During epidermal differentiation in mammals, keratins and keratin-associated matrix proteins rich in histidine are synthesized to produce a corneous layer. Little is known about interkeratin proteins in nonmammalian vertebrates, especially in reptiles. Using ultrastructural autoradiography after injection of tritiated...

journal_title：Journal of morphology

authors： Alibardi L

更新日期：2004-02-01 00:00:00

abstract：:This study describes the male reproductive cycle of Sibynomorphus mikanii from southeastern Brazil considering macroscopic and microscopic variables. Spermatogenesis occurs during spring-summer (September-December) and spermiogenesis or maturation occurs in summer (December-February). The length and width of the kidne...

journal_title：Journal of morphology

authors： Rojas CA,Barros VA,Almeida-Santos SM

更新日期：2013-02-01 00:00:00

abstract：:Sexual dimorphism in the distribution of antennal sense organs is common among adults of the genus Periplaneta. In three out of the four strains of Periplaneta americana examined, adult males had more contact chemoreceptros than females. In the fourth strain of P. americana and in P. australasiae, P. brunnea, P. fulig...

journal_title：Journal of morphology

authors： Schafer R,Sanchez TV

更新日期：1976-06-01 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：:Spermatogenesis discontinues during both adult reproductive diapause and quiescence in the flightless males of Omorgus freyi. During both types of dormancy, spermatogenesis discontinuity is a dynamic process involving an uninterrupted supply of primary spermatocytes that undergoes partial development and lyses before ...

journal_title：Journal of morphology

authors： Friedländer M,Scholtz CH

更新日期：1993-12-01 00:00:00

abstract：:Amphisbaenians are fossorial, predominantly limbless squamate reptiles with distinct cranial shapes corresponding to specific burrowing behaviors. Due to their cryptic lifestyles and the scarcity of museum specimens, little is known of their intraspecific variation, particularly regarding cranial osteology. This repre...

journal_title：Journal of morphology

authors： Hipsley CA,Rentinck MN,Rödel MO,Müller J

更新日期：2016-09-01 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：:The oral dentition and type and number of taste buds (TB) on the lips and in the oropharyngeal cavity were compared by means of SEM in 11 species of cardinal fishes (Apogonidae) belonging to five genera. The occurrence of a dense cover of skin papillae on the lips of some species (e.g., Apogon frenatus), as well as di...

journal_title：Journal of morphology

authors： Fishelson L,Delarea Y,Zverdling A

更新日期：2004-03-01 00:00:00

abstract：:Bone is a dynamic tissue adapting to loading according to "Wolff's law of bone adaptation." During very early life, however, such a mechanism may not be adequate enough to adapt to the dramatic change in environmental challenges in precocial species. Their neonates are required to stand and walk within hours after bir...

journal_title：Journal of morphology

authors： Gorissen BM,Wolschrijn CF,van Vilsteren AA,van Rietbergen B,van Weeren PR

更新日期：2016-07-01 00:00:00

abstract：:Zebra Finches (Taeniopygia guttata) are the most commonly used laboratory songbird species, yet their embryological development has been poorly characterized. Most studies to date apply Hamburger and Hamilton stages derived from chicken development; however, significant differences in development between precocial and...

journal_title：Journal of morphology

authors： Murray JR,Varian-Ramos CW,Welch ZS,Saha MS

更新日期：2013-10-01 00:00:00