Ultrastructure of the labrum and foregut of Derocheilocaris remanei (Crustacea, Mystacocarida).

abstract：:The ovary of the seahorse, Hippocampus erectus, is a cylindrical tube bounded by an outer layer consisting of a mesothelium and muscular wall and by an inner luminal epithelium, with a single row of developing follicles sandwiched between the two layers. Follicles are produced by a germinal ridge, which contains oogon...

journal_title：Journal of morphology

authors： Selman K,Wallace RA,Player D

更新日期：1991-09-01 00:00:00

abstract：:The study of the ileum of the ant Formica nigricans by light and electron microscopy revealed the existence of three differentiated regions: proximal, middle, and distal ileum. The middle region constitutes most of the length of the organ. Its wall is made up by a folded simple epithelium lined by a cuticle, which is ...

journal_title：Journal of morphology

authors： Villaro AC,Garayoa M,Lezaun MJ,Sesma P

更新日期：1999-12-01 00:00:00

abstract：:Amphisabenia is a group of squamates adapted for a fossorial lifestyle. The skull is the animal's the main digging tool, and can present one of four principal shapes. The shovel-headed shape is considered to be the most specialized for digging. The South American genus Leposternon presents a shovel-headed morphotype, ...

journal_title：Journal of morphology

authors： Hohl LSL,Barros-Filho JD,Rocha-Barbosa O

更新日期：2018-11-01 00:00:00

abstract：:The latest research on direct developing caecilian and anuran species indicate presence of only one generation of taste organs during their ontogeny. This is distinct from indirect developing batrachians studied thus far, which possess taste buds in larvae and anatomically distinct taste discs in metamorphs. This stud...

journal_title：Journal of morphology

authors： Budzik KA,Żuwała K,Kerney R

更新日期：2016-07-01 00:00:00

abstract：:The mode of sexual reproduction and embryogenesis was compared in 3 species of Botrylloides: B. simodensis, B. lenis, and B. violaceus. In all species, a testis and an egg (occasionally 2 eggs), the former being anterior to the latter, mature in the mantle on either side of a zooid. The egg is surrounded by 2 follicul...

journal_title：Journal of morphology

authors： Mukai H,Saito Y,Watanabe H

更新日期：1987-09-01 00:00:00

abstract：:Light and electron microscopy reveal that simple receptor cells in the jaw epithelium of sea urchin pedicellariae are connected by nerve tracts to the neuropile that coordinates jaw movements. The muscles responsible for jaw opening and closure and for flexion of the stem are all innervated in this neuropile. At least...

journal_title：Journal of morphology

authors： Peters BH,Campbell AC

更新日期：1987-07-01 00:00:00

abstract：:Barnacle cypris larvae show high morphological variation in the organs used in search of and attaching to a substratum. This variation may represent adaptation to the habitat of the species. Here, we studied SEM level morphologies of cypris antennular sensory and attachment organs in a deep-sea vent endemic species (N...

journal_title：Journal of morphology

authors： Yorisue T,Chan BK,Kado R,Watanabe H,Inoue K,Kojima S,Høeg JT

更新日期：2016-05-01 00:00:00

abstract：:Remarkably preserved specimens of Cowralepis mclachlani Ritchie, 2005 (Proc Linn Soc NSW 126:215-259) (Phyllolepida, Placodermi) represent a unique ontogenetic sequence adding to our understanding of anatomy, function, and phylogeny among basal jawed vertebrates (gnathostomes). A systematic review demonstrates that th...

journal_title：Journal of morphology

authors： Carr RK,Johanson Z,Ritchie A

更新日期：2009-07-01 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：:Comparisons of skull shape between closely related species can provide information on the role that phylogeny and function play in cranial evolution. We used 3D-anatomical landmarks in order to study the skull ontogeny of two closely related species, Lagenorhynchus obscurus and Lagenorhynchus australis, with a total s...

journal_title：Journal of morphology

authors： Del Castillo DL,Viglino M,Flores DA,Cappozzo HL

更新日期：2017-02-01 00:00:00

abstract：:A reduction in free ribosomes and increases in rough endoplasmic reticulum and Golgi complexes in follicle cells during oogenesis suggest their involvement in supplying precursor material for synthesis of the vitelline and chorionic membranes of the ichneumonid parasitoid Campoletis sonorensis. The inner region of the...

journal_title：Journal of morphology

authors： Norton WN,Vinson SB

更新日期：1982-11-01 00:00:00

abstract：:The embryonic development of the viviparous scorpion, Heterometrus fulvipes, has been followed throughout the gestation period and the successive stages of the developing embryos have been examined. The morphological features of the embryos are also described and illustrated according to their approximate age. ...

journal_title：Journal of morphology

authors： Subburam V,Reddy TG

更新日期：1981-09-01 00:00:00

abstract：:Sabellid and sabellariid polychaetes are regarded as sister groups in a number of recent phylogenetic analyses. This is based mainly on a shared specific arrangement of chaetae referred to as chaetal inversion. Remarkably, the uncini have a notopodial position in the abdomen, whereas capillary chaetae occur in the neu...

journal_title：Journal of morphology

authors： Kieselbach D,Hausen H

更新日期：2008-01-01 00:00:00

abstract：:The crocodilian naris is regulated by smooth muscle. The morphology of this system was investigated using a combination of gross, light microscopic, and micro-CT analyses, while the mechanics of narial regulation were examined using a combination of Hall Effect sensors, narial manometry, and electromyography. Alligato...

journal_title：Journal of morphology

authors： Klassen M,Adams J,Cramberg M,Knoche L,Young BA

更新日期：2020-06-01 00:00:00

abstract：:Anseriform birds were surveyed to examine how the degree of postcranial pneumaticity varies in a behaviorally and size-diverse clade of living birds. This study attempts to extricate the relative effects of phylogeny, body size, and behavioral specializations (e.g., diving, soaring) that have been postulated to influe...

journal_title：Journal of morphology

authors： O'Connor PM

更新日期：2004-08-01 00:00:00

abstract：:Nuclear egress, also referred to as nuclear envelope (NE) budding, is a process of transport in which vesicles containing molecular complexes or viral particles leave the nucleus through budding from the inner nuclear membrane (INM) to enter the perinuclear space. Following this event, the perinuclear vesicles (PNVs) ...

journal_title：Journal of morphology

authors： LaMassa N,Arenas-Mena C,Phillips GR

更新日期：2018-05-01 00:00:00

abstract：:This article presents a detailed description and illustration of the skull of Liotyphlops albirostris in comparison to the skulls of Typhlophis squamosus, Leptotyphlops dulcis, and Typhlops jamaicensis, based on high-resolution X-ray computed tomography (HRXCT). The skull of T. squamosus is illustrated and discussed i...

journal_title：Journal of morphology

authors： Rieppel O,Kley NJ,Maisano JA

更新日期：2009-05-01 00:00:00

abstract：:The endorgans of the inner ear of the gar were examined using transmission and scanning electron microscopy as well as nerve staining. The ultrastructure of the sensory hair cells and supporting cells of the gar ear are similar to cells in other bony fishes, whereas there are significant differences between the gar an...

journal_title：Journal of morphology

authors： Mathiesen C,Popper AN

更新日期：1987-11-01 00:00:00

abstract：:The development of diet-induced phenotypic differences in numbers of sensilla on the antennae of the grasshopper Schistocerca americana was studied using the exuviae produced at each molt. This made it possible to follow changes within an individual insect. In the first instar, insects had similar numbers of four sens...

journal_title：Journal of morphology

authors： Chapman RF

更新日期：2002-11-01 00:00:00

abstract：:In viviparous, teleost fish, with postfertilization maternal nutrient provisioning, embryonic structures that facilitate maternal-fetal nutrient transfer are predicted to be present. For the family Poeciliidae, only a handful of morphological studies have explored these embryonic specializations. Here, we present a co...

journal_title：Journal of morphology

authors： Panhuis TM,Fris M,Tuhela L,Kwan L

更新日期：2017-12-01 00:00:00

abstract：:The gross relationships and light microscopic anatomy of the suprarenal gland of a prosimian primate, Galago senegalensis, is described. The left gland is located medial to the pole of the left kidney in a fascial compartment of its own. The right suprarenal is located medial to the pole of the right kidney in intimat...

journal_title：Journal of morphology

authors： Carrmicheal SW,Haines DE,Pinkstaff CA

更新日期：1975-02-01 00:00:00

abstract：:The fine structure of midgut cells in two species of Cladocera (Crustacea: Branchiopoda) has unique features when it is compared to that in the midguts of other arthropods. Features which suggest that food is absorbed in digested form are: the presence of the peritrophic membrane, the glycocalyx, the almost complete a...

journal_title：Journal of morphology

authors： Quaglia A,Sabelli B,Villani L

更新日期：1976-11-01 00:00:00

abstract：:The light microscopic analysis of serial sections of the subcommissural organ (SCO) of the rainbow trout (Salmo gairdneri) shows that the form of the groove-like (in cross section) organ varies over its total length. Its rostral origin is a tunnel-like structure anterior to the orifice of the hollow pineal stalk. The ...

journal_title：Journal of morphology

authors： Schäfer H,Blüm V

更新日期：1988-06-01 00:00:00

abstract：:The paired tubular accessory glands in Haemaphysalis longicornis open at the junction of the cervical and the vestibular parts of vagina via short and narrow ducts. The pseudostratified columnar glandular epithelium covered by the muscle layer consists of both secretory and supporting cells. As feeding proceeds, the s...

journal_title：Journal of morphology

authors： Kakuda H,Koga T,Mori T,Shiraishi S

更新日期：1994-07-01 00:00:00

abstract：:Body length is one of the most important factors that influence organismal function and ecological niche. Although larger animals tend to have a suite of physiological advantages, such as lower mass-specific metabolic rates and lower costs of transport, they may also experience significant limitations to unsteady loco...

journal_title：Journal of morphology

authors： Kahane-Rapport SR,Goldbogen JA

更新日期：2018-09-01 00:00:00

abstract：:For better understanding of the links between limb morphology and the metabolic cost of locomotion, we have characterized the relationships between limb length and shape and other functionally important variables in the straightened forelimbs and hindlimbs of a sample of 12 domestic dogs (Canis familiaris). Intra-anim...

journal_title：Journal of morphology

authors： Myers MJ,Steudel K

更新日期：1997-11-01 00:00:00

abstract：:The differences in angulation and length observed for the fibers of anatomical muscles may reflect two distinct mechanical requirements: arrangement for pinnation, reflecting an increase in physiological cross-section and arrangement for equivalent placement of sarcomeres, possibly associated with coordination. The ob...

journal_title：Journal of morphology

authors： Gans C,de Vree F

更新日期：1987-04-01 00:00:00

abstract：:The skull of neotenic individuals of the Alpine Newt Triturus alpestris from the locality Drakolimni (Greece) is described on the basis of models made from magnified serial frontal sections. In order to recognize features associated with neoteny and paedomorphosis, the results were compared with normal development of ...

journal_title：Journal of morphology

authors： Roček Z

更新日期：1996-11-01 00:00:00

abstract：:To provide basic data about bone resorbing cells in the skeleton during the life cycle of Danio rerio, larvae, juveniles, and adults (divided into six age groups) were studied by histological procedures and by demonstration of the osteoclast marker enzyme tartrate-resistant acid phosphatase (TRAP). Special attention w...

journal_title：Journal of morphology

authors： Witten PE,Hansen A,Hall BK

更新日期：2001-12-01 00:00:00

abstract：:The appearance, cellular distribution, and changes of sugar residues during tooth development in adults of the polyphyodont, Liolaemus gravenhorsti, were investigated by using horseradish-peroxidase-conjugate lectins (lectin-HRP). With Con A (Canavalia ensiformis), the ameloblasts (late bell stage) show granular supra...

journal_title：Journal of morphology

authors： Lemus D,Cabello R,Lemus R,Soto M,Fuenzalida M

更新日期：1994-12-01 00:00:00