The head and neck muscles of the Philippine colugo (Dermoptera: Cynocephalus volans), with a comparison to tree-shrews, primates, and other mammals.

abstract：:Eggs of Xenopoecilus sarasinorum possess two distinct types of filaments on the surface of the egg envelope (chorion), long, attaching filaments restricted to the vegetal pole and weak, nonattaching filaments around the animal pole (micropyle). Both types are formed during oogenesis. After mature eggs were spawned thr...

journal_title：Journal of morphology

authors： Iwamatsu T,Kobayashi H,Sato M,Yamashita M

更新日期：2008-06-01 00:00:00

abstract：:Transmission electron micrographs show the branchial epithelium of the ascidian Ciona intestinalis to be composed of three kinds of cells: ciliated, parietal, and "dark." Absorptive processes of phagocytosis appear in ciliated and parietal cells; moreover, apocrine-like secretion is evident exclusively in the parietal...

journal_title：Journal of morphology

authors： Pestarino M,Fiala-Medioni A,Ravera F

更新日期：1988-09-01 00:00:00

abstract：:In Canis and Ursus the largest proportion of attachments of muscles of the shoulder and brachium on the scapula and humerus is direct; fewer attachments are aponeurotic or tendinous. In both genera most attachments can be associated with superficial osteological features (scars or delimitable surfaces); attachments th...

journal_title：Journal of morphology

authors： Bryant HN,Seymour KL

更新日期：1990-10-01 00:00:00

abstract：:To our knowledge, this paper presents the first description of neuroendocrine complexes in invertebrates. Neuroendocrine complexes have been identified in the lamina propria of the snail gut by light microscopy using Giemsa-stained, deplasticized sections and by electron microscopy. Silver impregnations and immunocyto...

journal_title：Journal of morphology

authors： Alba Y,Villaro AC,Sesma P,Vázquez JJ

更新日期：1989-03-01 00:00:00

abstract：:Burrow construction in the subterranean Ctenomys talarum (Rodentia: Ctenomyidae) primarily occurs by scratch-digging. In this study, we compared the limbs of an ontogenetic series of C. talarum to identify variation in bony elements related to fossorial habits using a morphometrical and biomechanical approach. Diamete...

journal_title：Journal of morphology

authors： Echeverría AI,Becerra F,Vassallo AI

更新日期：2014-08-01 00:00:00

abstract：:Two types of sperm are produced in the silkworm, Bombyx mori. Nucleate eupyrene sperm is an ordinary sperm that contributes to fertilization, while anucleate apyrene sperm is considered to play important roles in assisting eupyrene sperm. At the very late stage of spermatogenesis, a phenomenon called "peristaltic sque...

journal_title：Journal of morphology

authors： Sahara K,Kawamura N

更新日期：2004-01-01 00:00:00

abstract：:The present study examined the morphometric properties of the forelimb, including the inertial properties of the body segments and the morphometric parameters of 21 muscles spanning the shoulder and/or elbow joints of six Macaca mulatta and three M. fascicularis. Five muscle parameters are presented: optimal fascicle ...

journal_title：Journal of morphology

authors： Cheng EJ,Scott SH

更新日期：2000-09-01 00:00:00

abstract：:The results of an ultrastructural investigation of the gastric glands of the ruin lizard are reported. In this reptile the stomach can be divided into a larger fundus and a smaller pars pilorica. Fundic glands are characterized by three main kinds of cells: mucous, endocrine, and oxynticopeptic; the latter were not ob...

journal_title：Journal of morphology

authors： Liquori GE,Ferri D,Scillitani G

更新日期：2000-02-01 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：:Knowledge about the diversity, locomotor adaptations, and evolution of the marsupial forelimb is limited, resulting in an underrepresentation of marsupials in comparative anatomical literature on mammalian forelimb anatomy. This study investigated hand proportions in the diverse marsupial order Diprotodontia. Fifty-tw...

journal_title：Journal of morphology

authors： Weisbecker V,Warton DI

更新日期：2006-12-01 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：:Cover illustration. Mayetiola destructor is a major pest of wheat in Europe, North Africa and North America. In this issue of the Journal of Morphology, Schneeberg et al. (pp. 1299-1311) investigate the adult head structures of the cecidomyiid fly and compared their findings with evolutionarily less successful familie...

journal_title：Journal of morphology

authors： Schneeberg K,Polilov A,Harris MO,Beutel RG

更新日期：2013-11-01 00:00:00

abstract：:The objectives of this research were to investigate the morphology of the thoracic skeleton and muscles of the mosquito, Culiseta inornata (Williston). The results are presented in 25 text figures and descriptions of each skeletal part and muscle. Undescribed exoskeletal structures are the postmediotergite, intersegme...

journal_title：Journal of morphology

authors： Owen WB

更新日期：1977-09-01 00:00:00

abstract：:As part of a study of ulcer formation and healing, regeneration of colonic mucosa in rats was studied following placement of a surgical lesion. Alterations in mucosubstances and connective tissue were examined and their possible significance discussed. The sequence of events in healing was: 1) The mucosa adjacent to t...

journal_title：Journal of morphology

authors： Brackett KA,Townsend SF

更新日期：1980-02-01 00:00:00

abstract：:In this study, we compare and contrast armoring strategies during early ontogeny among three related species of marine turtles: the hawksbill, a species that diverged about 29 mya from the loggerhead and Kemp's ridley, which diverged from one another about 16 mya. Our purpose was to determine whether there was a corre...

journal_title：Journal of morphology

authors： Salmon M,Coppenrath C,Higgins B

更新日期：2018-09-01 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 hypochord of the zebrafish embryo (Danio rerio) emerges at the 9-somite stage as a single row of cells in the dorsomedial endoderm immediately ventral to the notochord. It is recognizable from the 2(nd) or 3(rd) somite and extends along the trunk to the same extent as the somites. A basal lamina surrounds the hypo...

journal_title：Journal of morphology

authors： Eriksson J,Löfberg J

更新日期：2000-06-01 00:00:00

abstract：:The ovarian follicles of Ctenosaura pectinata exhibit a clear seasonal cycle in morphology. Early in development, each oocyte is surrounded by a granulosa composed of a single layer of cuboidal or squamous cells and thin thecal layers. As folliculogenesis progresses, the granulosa becomes multilayered and composed of ...

journal_title：Journal of morphology

authors： Uribe MDCA,B GLP,Guillette LJ Jr

更新日期：1996-10-01 00:00:00

abstract：:The uptake and retention of radiolabeled estradiol by both the male and female reproductive organs were examined in the baboon. Two male and two female baboons were injected intracardially with 1 microgram/kg body weight of 3H-estradiol and two animals, one male and one female, were injected with both labeled and 100 ...

journal_title：Journal of morphology

authors： Weaker FJ,Sheridan PJ

更新日期：1982-05-01 00:00:00

abstract：:The gonads from three hermaphrodite species of different invertebrate phyla were studied at the ultastructure level. In the flatworm Dugesia biblica, male germ cells in different stages of development lay in the lumen of testicular follicles surrounded by overlapping parietal cells. The intercellular space formed by c...

journal_title：Journal of morphology

authors： O'Donovan P,Abraham M

更新日期：1987-06-01 00:00:00

abstract：:Standard transmission electron microscopy (TEM) techniques have been applied to three species of phoronids to describe cytological features of their nervous systems. Four types of neurons have been distinguished by morphological and ultrastructural criteria, mainly involving their kinds of vesicles. Glial cells with c...

journal_title：Journal of morphology

authors： Fernández I,Pardos F,Benito J,Roldán C

更新日期：1996-12-01 00:00:00

abstract：:The extravagance and diversity of external genitalia have been well characterized in male primates; however, much less is known about sex differences or variation in female form. Our study represents a departure from traditional investigations of primate reproductive anatomy because we 1) focus on external rather than...

journal_title：Journal of morphology

authors： Drea CM,Weil A

更新日期：2008-04-01 00:00:00

abstract：:A statistical and functional relationship between neural canal anatomy and locomotor mode is demonstrated in living marine mammals of the Order Carnivora. This relationship is interpreted to be the result of differential innervation and territory of musculature involved in generating the six locomotor patterns analyze...

journal_title：Journal of morphology

authors： Giffin EB

更新日期：1992-12-01 00:00:00

abstract：:Over the past few decades, geometric morphometric methods have become increasingly popular and powerful tools to describe morphological data while over the same period artificial neural networks have had a similar rise in the classification of specimens to preconceived groups. However, there has been little research i...

journal_title：Journal of morphology

authors： Soda KJ,Slice DE,Naylor GJ

更新日期：2017-01-01 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：:The Puerto Rican tree frog, Eleutherodactylus coqui, has internal fertilization and direct development on land. In light of these reproductive adaptations, the events of fertilization and early development were studied. Cytological examination of just-fertilized eggs showed that sperm entry is restricted to about 10% ...

journal_title：Journal of morphology

authors： Elinson RP

更新日期：1987-08-01 00:00:00

abstract：:Six locomotory muscles of wild common coots, Fulica atra, were analyzed histochemically. Capillarity and fiber-type distributions were correlated to the functional implications and physiological needs of each muscle. Leg muscles exhibit three unevenly distributed fiber types, a pattern that reflects the great variety ...

journal_title：Journal of morphology

authors： Torrella JR,Fouces V,Palomeque J,Viscor G

更新日期：1998-08-01 00:00:00

abstract：:Bristle positions in two rows of bristles on the basitarsus of the second leg of the fruitfly Drosophila melanogaster were analyzed in order to determine the accuracy of bristle placement within these rows. Within each row the positions of the two terminal bristles were found to be approximately equally variable, and ...

journal_title：Journal of morphology

authors： Held LI Jr,Pham TT

更新日期：1983-11-01 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：:Mate, prey, and predator recognition often depend on the integration of information from multiple sensory modalities including visual, auditory, and/or olfactory inputs. In Crotalinae, the eyes sense visible light while the pit organs detect infrared (IR) radiation. Previous studies indicate that there is significant ...

journal_title：Journal of morphology

authors： Liu Y,Chen Q,Papenfuss TJ,Lu F,Tang Y

更新日期：2016-01-01 00:00:00