Forebrain projections of the pigeon olfactory bulb.

abstract：:Adult female white-footed mice, Peromyscus leucopus, were exposed to long (LP) or short (SP) photoperiods for 6 weeks (experiment I). Another group of animals was kept for 6 weeks in SP, then injected SC with 30 micrograms prolactin twice daily for 2, 3, 4, or 6 days (experiment II). Ovaries from the mice in both expe...

journal_title：Journal of morphology

authors： Spanel-Borowski K,Bartke A,Petterborg LJ,Reiter RJ

更新日期：1983-05-01 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 morphology of the spermatozoon of representative species of the subfamily Nesomyinae (Muroidea: Nesomyidae), a monophyletic group of rodents endemic to Madagascar, was examined by light and electron microscopy to determine the sperm head shape and tail length across the species. Marked interspecific differences we...

journal_title：Journal of morphology

authors： Ding X,Leigh CM,Goodman SM,Bedford JM,Carleton MD,Breed WG

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：:We have studied the gill epithelium of Oreochromis niloticus using transmission electron microscopy with the particular interested relationship between cell morphology and osmotic, immunoregulatory, or other non-regulatory functions of the gill. Pavement cells covered the filament epithelium and lamellae of gills, wit...

journal_title：Journal of morphology

authors： Monteiro SM,Oliveira E,Fontaínhas-Fernandes A,Sousa M

更新日期：2010-05-01 00:00:00

abstract：:Nematocytes containing microbasic mastigophores are intimately associated with accessory cells in the epidermis of Chironex fleckeri. Large microbasic mastigophores may be surrounded by seven to nine such cells. Each accessory cell possesses an apical portion containing secretory droplets and a basal portion which car...

journal_title：Journal of morphology

authors： Rifkin JF,Endean R

更新日期：1988-01-01 00:00:00

abstract：:The morphology of ctenostome bryozoans remains little investigated with only few species having been subject to more detailed studies. From all the seven main different superfamilies, only few representatives have been studied. The superfamily Arachnidioidea has particularly been neglected concerning detailed morpholo...

journal_title：Journal of morphology

authors： Schwaha T,De Blauwe H

更新日期：2020-12-01 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：:Blood vessels in Nereis japonica were studied by electron microscopy. It was found that blood vessels regardless of location were similar in the basic organization of the basal lamina and the usual presence of collagen fibrils on the vessel wall. Differences arise, depending on whether the outside of the basal lamina ...

journal_title：Journal of morphology

authors： Nakao T

更新日期：1974-10-01 00:00:00

abstract：:The site and process of urine formation in the renopericardial system of Helisoma have been investigated. Osmotic pressure and protein content of hemolymph from the heart, pericardial fluid from the pericardial cavity, prourine from the kidney sac, and urine from the ureter have been determined. Osmotic pressure is eq...

journal_title：Journal of morphology

authors： Khan HR,Saleuddin ASM

更新日期：1981-08-01 00:00:00

abstract：:Branchial food traps are regions of specialized secretory tissue in the tadpole pharynx, where suspended food particles are trapped in mucus. Light and scanning electron microscopy were used to study branchial food traps from larvae of ten anuran families (36 species). Most anuran larvae from "advanced" (suborder Neob...

journal_title：Journal of morphology

authors： Wassersug RJ,Rosenberg K

更新日期：1979-03-01 00:00:00

abstract：:Cytoplasmic microtubules can be divided into two subpopulations: 1) those adjacent to the nucleus (perinuclear), and 2) those distributed between the myofilament bundles (nonperinuclear). Previous observations (Cartwright and Goldstein, '83) indicate total cytoplasmic microtubule numeric density increases to a maximum...

journal_title：Journal of morphology

authors： Park RS,Légier MF,Cartwright J Jr,Goldstein MA

更新日期：1984-01-01 00:00:00

abstract：:Using immunohistochemical labeling against acetylated a-tubulin and serotonin in combination with confocal laser scanning microscopy and 3D-reconstruction, we investigated the temporary freshwater pond inhabitant Branchinella sp. (Crustacea: Branchiopoda: Anostraca) for the first time to provide detailed data on the d...

journal_title：Journal of morphology

authors： Frase T,Richter S

更新日期：2016-11-01 00:00:00

abstract：:The functioning of the vertebrate eye depends on its absolute size, which is presumably adapted to specific needs. Eye size variation in lidless and spectacled colubrid snakes was investigated, including 839 specimens belonging to 49 genera, 66 species and subspecies. Variations of adult eye diameters (EDs) in both ab...

journal_title：Journal of morphology

authors： Liu Y,Ding L,Lei J,Zhao E,Tang Y

更新日期：2012-08-01 00:00:00

abstract：:The sagittal otolith of Hyperoglyphe antarctica (Centrolophidae: Teleostei) has a prismatic structure in which the anti-sulcal growth axes of each prism consist of a series of nested cones each composed of a mineral layer followed by an organic matrix layer. Broken sections show the mineral layers to be composed of st...

journal_title：Journal of morphology

authors： Gauldie RW,Xhie J

更新日期：1995-02-01 00:00:00

abstract：:For the first time the scanning electron microscope was used to compare developmental changes in scorpion embryos and the first and second stadia. In the buthid species of this study, Centruroides vittatus, and all other scorpions, the newborn climb up on their mother's back and remain there without feeding for severa...

journal_title：Journal of morphology

authors： Farley RD

更新日期：2005-07-01 00:00:00

abstract：:Caudal courtship glands (CCGs) are sexually dimorphic glands described in the skin of the dorsal tail base of some male salamanders in the genera Desmognathus, Eurycea, and Plethodon in the family Plethodontidae. These glands are believed to deliver pheromones to females during courtship, when the female rests her chi...

journal_title：Journal of morphology

authors： Sever DM,Siegel DS

更新日期：2015-03-01 00:00:00

abstract：:The feline anterior sartorius is a long strap-like muscle composed of short muscle fibers. Nerve branches that enter this muscle contain the axons of motor units whose constituent muscle fibers are distributed asymmetrically within the muscle. In the present study, twitch and tetanic isometric contractions were evoked...

journal_title：Journal of morphology

authors： Scott SH,Thomson DB,Richmond FJ,Loeb GE

更新日期：1992-08-01 00:00:00

abstract：:Sensory epithelia of the oral tube, a fungiform body anterior to the tentacles and of the terminal knob of tentacles, were studied in Ovatella myosotis by electron microscopy. All three epithelia consist of columnar support cells, sensory cells, and, except in the oral tube, numerous goblet cells. The epithelia differ...

journal_title：Journal of morphology

authors： Wondrak G

更新日期：1984-09-01 00:00:00

abstract：:The forelimbs, along with the crania, are an essential part of the prey-killing apparatus in cats. Linear morphometrics of the forelimbs were used to determine the morphological differences between felids that specialize on large prey, small prey, or mixed prey. We also compared the scaling of felid forelimbs to those...

journal_title：Journal of morphology

authors： Meachen-Samuels J,Van Valkenburgh B

更新日期：2009-06-01 00:00:00

abstract：:The cat hindlimb contains several long, biarticular strap muscles composed of parallel muscle fascicles that attach to short tendons. Three of these muscles--sartorius, tenuissimus, and semitendinosus--were studied by dissecting individual gold-stained fibers and determining the surface distribution of acetylcholinest...

journal_title：Journal of morphology

authors： Loeb GE,Pratt CA,Chanaud CM,Richmond FJ

更新日期：1987-01-01 00:00:00

abstract：:The pattern of onset and general rate of cranial ossification are compared in two marsupials, Monodelphis domestica (Didelphidae) and Macropus eugenii (Macropodidae). In both species a similar suite of bones is present at birth, specifically those surrounding the oral cavity and the exoccipital, and in both postnatal ...

journal_title：Journal of morphology

authors： Clark CT,Smith KK

更新日期：1993-02-01 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：:In Japan Pseudopythina tsurumaru is an up to 10.8 mm-long commensal of the burrowing sea cucumber Protankyra bidentata, whereas in Hong Kong the same species is smaller and associated with the crab Hexapus anfractus, itself a commensal of P. bidentata. Japanese P. tsurumaru is a hermaphrodite tending towards protogyny...

journal_title：Journal of morphology

authors： Lützen J,Jespersen A,Takahashi T,Kai T

更新日期：2004-10-01 00:00:00

abstract：:Asymmetrical monorchy, or the complete absence of one testis coupled with the presence of its bilateral counterpart, is reported for 174 species of the carabid beetle tribes Abacetini, Harpalini, and Platynini (Insecta: Coleoptera: Carabidae) based on a survey of over 820 species from throughout the family. This condi...

journal_title：Journal of morphology

authors： Will KW,Liebherr JK,Maddison DR,Galián J

更新日期：2005-04-01 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：:A large sample of embryological material of the North American paddlefish Polyodon spathula (Acipenseriformes: Polyodontidae) confirms that early development in Polyodon is very similar to that reported for the sister group of Polyodontidae, the sturgeons (Acipenseridae). Polyodon illustrates many basic aspects of aci...

journal_title：Journal of morphology

authors： Bemis WE,Grande L

更新日期：1992-07-01 00:00:00

abstract：:Early spermatids of the onychophoran Peripatopsis capensis are spherical cells with a centrally located nucleus, numerous mitochondria, Golgi complexes, microtubules and two centrioles. During spermiogenesis, Golgi vesicles migrate to one side of the cell where they form a tight aggregate, which is later shed. The mat...

journal_title：Journal of morphology

authors： Camatini M,Franchi E,Saita A

更新日期：1979-01-01 00:00:00

abstract：:Sexual selection can lead to rapid evolution of sexual traits and striking morphological diversity across taxa. In populations where competition for mates is intense, males sometimes evolve distinct behavioral strategies along with morphological differences that help them secure mating opportunities. Strong postcopula...

journal_title：Journal of morphology

authors： Gilman CA,Corl A,Sinervo B,Irschick DJ

更新日期：2019-02-01 00:00:00

abstract：:Spermiogenesis in the South American leptodactylid frog Odontophrynus cultripes was analyzed ultrastructurally. The spermatids undergo morphological modification while still enclosed in microtubule-rich processes of Sertoli cells. Electron-dense plates resembling junctional structures appear in regions at which the sp...

journal_title：Journal of morphology

authors： Báo SN,Dalton GC,de Oliveira SF

更新日期：1991-03-01 00:00:00