Ocular changes accompanying eye loss in the spider family uloboridae.

abstract：:Morphological features of the goldfish caudal neurosecretory system were investigated by means of immunohistochemical localization of urotensins I and II (UI and UII) and electron microscopic examination of the caudal neurosecretory neurons, the urophysis, and the synaptic neuropil. The aim of the work is to provide a...

journal_title：Journal of morphology

authors： Cioni C,De Vito L,Greco A,Pepe A

更新日期：1998-01-01 00:00:00

abstract：:External and internal structures of the head of adults of Clambus are described and illustrated in detail. The results are compared with structural features found in the clambid genus Calyptomerus, in representatives of other scirtoid families, and also in species of other coleopteran suborders, notably Myxophaga. The...

journal_title：Journal of morphology

authors： Anton E,Yavorskaya MI,Beutel RG

更新日期：2016-05-01 00:00:00

abstract：:Developmental studies of the Recent Australian lungfish, Neoceratodus forsteri, show that this species has two sets of functional tooth-bearing bones in the lower jaw of young hatchlings. These coincide with an early stage in the life history when the fish is strictly carnivorous. In N. forsteri, a paired tooth-bearin...

journal_title：Journal of morphology

authors： Kemp A

更新日期：1995-09-01 00:00:00

abstract：:Postembryonic skeletal ontogeny of the pelobatid frog Scaphiopus intermontanus is described based on a developmental series of cleared-and-stained, whole-mount specimens. The focus is on laboratory-reared individuals fed a herbivorous diet as larvae. Although there is variation in the timing of ossification of individ...

journal_title：Journal of morphology

authors： Hall JA,Larsen JH Jr

更新日期：1998-11-01 00:00:00

abstract：:The process of coelomic pouch formation in Pisaster ochraceus was studied with light microscopy, transmission and scanning electron microscopy and time-lapse cinemicrography as well as with the drug cytochalasin B. As in most asteroids, the paired coelomic pouches of Pisaster ochraceus are formed from outpocketing of ...

journal_title：Journal of morphology

authors： Crawford BJ,Chia FS

更新日期：1978-07-01 00:00:00

abstract：:Exceptional variability in the shell of the pancake tortoise Malacochersus tornieri, both in the keratinous surficial scutes and the underlying bones, in addition to its remarkably fenestrated bony shell are unique among tortoises. Based on 14 individuals of different sizes and ages, the observed variation in M. torni...

journal_title：Journal of morphology

authors： Mautner AK,Latimer AE,Fritz U,Scheyer TM

更新日期：2017-03-01 00:00:00

abstract：:Light and electron microscopic techniques show that the eye of the marine prosobranch gastropod, Ilyanassa obsoleta, is composed of an optic cavity, lens, cornea, retina, and neuropile, and is surrounded by a connective tissue capsule. The adult retina is a columnar epithelium containing three morphologically distinct...

journal_title：Journal of morphology

authors： Gibsonm BL

更新日期：1984-08-01 00:00:00

abstract：:The functional anatomy of the hindlimb of 12 species of viverrids was studied with relation to locomotion. The animals were allocated to primary locomotor categories on the basis of their anatomy and locomotion. The climbing, arboreal walking category (Nandinia binotata) is characterized by a small sacroiliac articula...

journal_title：Journal of morphology

authors： Taylor ME

更新日期：1976-02-01 00:00:00

abstract：:Mature spermatozoa from spermathecae of founding queens were obtained from 5 species of ants, representing the major subfamilies Myrmicinae (Acromyrmex versicolor, Crematogaster sp.) and Dolichoderinae (Tapinoma sessile, Conomyrma insana, Conomyrma wheeleri). The ultrastructure of ant spermatozoa has many features in ...

journal_title：Journal of morphology

authors： Wheeler DE,Crichton EG,Krutzsch PH

更新日期：1990-12-01 00:00:00

abstract：:The posterior half of the channel catfish intestine has a similar histological organization to that of other teleost fishes. This region is organized into a muscosa, a submucosa, a double layered muscularis and a serosa. A "stratum compactum" of dense connective tissue was confirmed for the submucosa. In its histology...

journal_title：Journal of morphology

authors： Krementz AB,Chapman GB

更新日期：1975-04-01 00:00:00

abstract：:According to the current opinion, lymph-heart striated muscle represents a specialized type of skeletal muscles in frogs. Here, we studied muscle fibers in mechanically damaged lymph hearts during the first postoperative week using electron-microscopic autoradiography. We present evidence that both, the satellite cell...

journal_title：Journal of morphology

authors： Krylova MI,Bogolyubov DS

更新日期：2015-12-01 00:00:00

abstract：:The progression of ovarian follicular development in the Northern Alligator Lizard has been documented ultrastructurally and by enumeration of cells, with a focus on changes in the granulosa component of the follicle. The pattern of cellular differentiation of the granulosa entails, as in other lizards, the transforma...

journal_title：Journal of morphology

authors： Klosterman LL

更新日期：1987-05-01 00:00:00

abstract：:Larvae of sea stars are surrounded by an extracellular matrix called the hyaline layer. The lectin-binding properties of this matrix were investigated in an ultrastructural study of Patiriella species having different modes of development. The planktonic bipinnaria and brachiolaria of P. regularis and the planktonic b...

journal_title：Journal of morphology

authors： Cerra A

更新日期：1999-11-01 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：:The oviducts of 24 tortoises (Gopherus polyphemus) were examined using histological techniques and scanning electron microscopy to determine endometrial morphology. Measurements of endometrial characteristics (epithelial cell height, cilia length, thickness of endometrial glandular layer, and glandular diameter) in th...

journal_title：Journal of morphology

authors： Palmer BD,Guillette LJ Jr

更新日期：1990-06-01 00:00:00

abstract：:The muscles of the head, neck and thorax of the adult cabbage looper Trichoplusia ni are described for the first time. They are compared to those of Choristoneura fumiferana, Manduca sexta, Smerinthus geminatus, Antheraea polyphemus, Sphinx convolvuli, Crymodes devastator, and Danaus plexippus. ...

journal_title：Journal of morphology

authors： Macfarlane J,Eaton JL

更新日期：1973-02-01 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：: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 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 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：: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：: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：: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：:The recent discovery of a plethodontid salamander, Karsenia koreana, in Korea challenged our understanding of the biogeographic history of the family Plethodontidae, by far the largest family of salamanders, which otherwise is distributed in the New World with a few European species. Molecular studies suggest that Kar...

journal_title：Journal of morphology

authors： Buckley D,Wake MH,Wake DB

更新日期：2010-05-01 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：:African lungfish (Protopterus) seem unique among osteognathostomes in possessing a potential vomeronasal organ homolog in form of accessory epithelial crypts within their nasal cavity. Many details regarding structural and functional properties of these crypts are still unexplored. In this study, we reinvestigate the ...

journal_title：Journal of morphology

authors： Wittmer C,Nowack C

更新日期：2017-06-01 00:00:00

abstract：:Head structures of the leaf mining larva of the chrysomelid species Podagricomela shirahatai are described and illustrated. Internal and external structures were reconstructed three dimensionally based on image stacks obtained with microcomputed tomography. The larval head is characterized by prognathism, a dorsoventr...

journal_title：Journal of morphology

authors： Hua Y,Beutel RG,Ge SQ,Yang XK

更新日期：2015-04-01 00:00:00

abstract：:The median fins in extant actinopterygians are the product of millions of years of evolution. During this time, different developmental patterns for the dorsal and anal fins emerged leading to a high variation in median fin morphology and ontogeny. In this study, the development of anal and dorsal fins in atheriniform...

journal_title：Journal of morphology

authors： Richter P,Moritz T

更新日期：2017-06-01 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：:A morphological and cytometric analysis of the adult fat body cells and oenocytes was made on sections of abdomens from immature, mature and senescent Drosophila melanogaster of both sexes. There are about 18,000 fat body cells in abdomens of female and mature male flies. Immature and senescent males have about 12,000...

journal_title：Journal of morphology

authors： Johnson MB,Butterworth FM

更新日期：1985-04-01 00:00:00