Abstract:
:Stauromedusae have relatively few macromorphological characters, making both their taxonomy and identification difficult. For this reason, histological characters are also employed in the taxonomy of the group. This study presents a detailed description of the histomorphology of Haliclystus antarcticus Pfeffer, 1889 (Cnidaria, Staurozoa). We make new observations for the species and for the class, and address functional, taxonomical, and evolutionary aspects of staurozoan histo-anatomy. A complete reconstruction of H. antarcticus body plan is used to guide a more detailed observation, based on light microscopy, of structures rarely cited in the literature, such as the intertentacular lobules, the ostia between adjacent perradial pockets, and the male and female gonadal vesicles. Two possible regions of nematocyst formation are hypothesized and discussed. We also provide a review of the current use of histological characters in the taxonomy of the group. Understanding the body plan of stauromedusae is a challenge, because each single individual presents characters found in medusae and in polyps of other medusozoans. Comprehensive histological descriptions are important to establish relations of homology within Staurozoa and Cnidaria, providing crucial data on their evolution.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Miranda LS,Collins AG,Marques ACdoi
10.1002/jmor.20185subject
Has Abstractpub_date
2013-12-01 00:00:00pages
1365-83issue
12eissn
0362-2525issn
1097-4687journal_volume
274pub_type
杂志文章abstract::Larval salivary gland cells of seven Drosophila species from the melanogaster group were studied during the early third-instar period. Similar cytoplasmic organization was seen in both the distal and proximal parts of the gland. The cytoplasm contained a large number of free ribosomes, but only a few rough endoplasmic...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051980109
更新日期:1988-10-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1051780203
更新日期:1983-11-01 00:00:00
abstract::The abdominal cerci of the wood cricket, Nemobius sylvestris, are covered by a variety of hair-like sensilla that differ in length, thickness, and articulation. Fillings from the cercal nerves with cobalt chloride and fluorescent dyes revealed the projection of sensory axons into the terminal abdominal ganglion of the...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10672
更新日期:2008-12-01 00:00:00
abstract::This work is concerned with the ultrastructural organization and some histochemical features of the vacuolar cells of the demosponge Oscarella lobularis. Vacuolar cells are characterized by large clear vacuoles containing an aqueous fluid. They are commonly found in the mesohyl of this sponge and tend to constitute a ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051880104
更新日期:1986-04-01 00:00:00
abstract::The form of amniote claws has been extensively investigated, often with inferences about ecological association being drawn from studies of their geometry. Various methods have been used to quantify differences in the geometry of claws, but rarely have the underlying assumptions of such methods been addressed. Here, w...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20625
更新日期:2017-02-01 00:00:00
abstract::Sixty-seven specimens of the common North Atlantic asteroid, Asterias vulgaris, were collected at seasonal intervals over a 2-year period and their testes observed with both light and electron microscopy. In the germinal epithelium, a predictable series of interactions between versatile somatic cells and germinal cell...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051660107
更新日期:1980-10-01 00:00:00
abstract::Early embryonic mitosis of the silkworm, Bombyx mori, was morphologically studied in the normal eggs and in the eggs treated by low temperature (-10°C). The first embryonic mitosis is observed in the eggs at 120 to 150 minutes after deposition at 26°C. After egg and sperm pronuclei unite, a spindle is formed in each o...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051580106
更新日期:1978-10-01 00:00:00
abstract::The purpose of this study was to find out whether the microstructure of the highly permeable skin of heat-acclimated pigeons allowing increased evaporative cooling differs from the skin of pigeons in the non-acclimated or cold-acclimated state. In addition, the correlation between epidermal morphology and cutaneous wa...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199801)235:1<17::AID-JMOR2
更新日期:1998-01-01 00:00:00
abstract::The enteric nervous system consists of a number of interconnected networks of neuronal cell bodies and fibers as well as satellite cells, the enteric glia. Basic fibroblast growth factor (bFGF) is a mitogen for a variety of mesodermal and neuroectodermal-derived cells and its presence has been described in many tissue...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10252
更新日期:2004-09-01 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
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(200002)243:2<167::AID-JMOR
更新日期:2000-02-01 00:00:00
abstract::Newly metamorphosed Kenyan reed frogs, Hyperolius viridiflavus ferniquei, are able to regenerate amputated digits. The terminal digital pad is also completely reformed. Differentiation of the regenerating digital pad was studied by scanning electron microscopy. External differentiation of the digital pad began late in...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051530305
更新日期:1977-09-01 00:00:00
abstract::The locomotory system of Solifugae is distinct from that of other Arachnida in several ways. Only three pairs of legs are involved in locomotion, while the first pair function as sensory appendages. Morphologically, the proximal region of the locomotory system in Solifugae is characterized by fused coxae. Within the p...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.21260
更新日期:2020-12-01 00:00:00
abstract::The lizard tail is well known for its ability to autotomize and regenerate. Physical contact of the tail by a predator may induce autotomy at the location at which the tail is grasped, and upon detachment the tail may undergo violent, rapid, and unpredictable movements that appear to be, to some degree, regulated by c...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20269
更新日期:2014-09-01 00:00:00
abstract::We studied the functional morphology of the female reproductive system of the purple stone crab Danielethus crenulatus. The most remarkable feature is the relative storage capacity and extensibility of the seminal receptacles. These receptacles are a pair of simple sacs that lack internal structures dividing the inter...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20685
更新日期:2017-07-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1052050304
更新日期:1990-09-01 00:00:00
abstract::The innervation of the musculature of the tongue and the hyobranchial apparatus of caecilians has long been assumed to be simple and to exhibit little interspecific variation. A study of 14 genera representing all six families of caecilians demonstrates that general patterns of innervation by the trigeminal, facial, g...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052120105
更新日期:1992-04-01 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
pub_type: 杂志文章
doi:10.1002/jmor.20522
更新日期:2016-05-01 00:00:00
abstract::Data from adult birds, crocodilians, Sphenodon, squamates, turtles, and from the chick embryo are compared to test conflicting hypotheses of homology of the deep dorsal thigh muscles of birds and other reptiles. This comparison suggests that: (1) avian Mm. iliofemoralis externus and iliotrochantericus caudalis (herein...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051890310
更新日期:1986-09-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1051530308
更新日期:1977-09-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1051930105
更新日期:1987-07-01 00:00:00
abstract::The use of hormone replacement to support limb regeneration in hypophysectomized newts has been the subject of many investigations. Growth hormone, as well as prolactin (PL) in combination with exogenously supplied thyroxine, have all been shown to he effective. However, the bovine growth hormone used to support limb ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051670109
更新日期:1981-01-01 00:00:00
abstract::The brine shrimp, Artemia (Crustacea, Anostraca), is a zooplankton that is commonly used in both basic and applied research. Unfortunately, Artemia embryos are often cultured under conditions that alter early development, and reports based on these cultures oversimplify or fail to describe morphological phenotypes. Th...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20344
更新日期:2015-03-01 00:00:00
abstract::The dorsal vessel (DV) in the abdomen of the blood-feeding insect Rhodnius prolixus was divided functionally into two regions, the heart, into which haemolymph entered the DV through four pairs of ostia located in abdominal segment VII, and the aorta, along which the haemolymph was propelled from abdominal segment VI ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052040103
更新日期:1990-04-01 00:00:00
abstract::Among egg-brooding hylid frogs there is much interspecific variation in the degree of development of the young at hatching. In certain species of Gastrotheca the eggs hatch into free-living tadpoles, whereas in others (and in the genera Amphignathodon, Cryptobatrachus, Stefania and Hemiphractus) the eggs hatch directl...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051820102
更新日期:1984-10-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1051420103
更新日期:1974-01-01 00:00:00
abstract::We described the topography and morphometry of the testicular artery, pampiniform plexus veins, and indirect connections between them in the spermatic cord of the bull. Sixty microcorrosive casts of bovine spermatic cords were analyzed macroscopically, by stereomicroscopy, and by scanning electron microscopy. The aver...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10929
更新日期:2011-04-01 00:00:00
abstract::Slender blindsnakes (Leptotyphlopidae) are known to use a unique feeding mechanism that involves rapid flexions of the tooth-bearing lower jaw. However, the morphology of the leptotyphlopid jaw apparatus has remained poorly studied due to the extremely small size of these snakes. Here I present a detailed description ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10414
更新日期:2006-04-01 00:00:00
abstract::The microvasculariaztion of the lateral line organs (LLOs) of the adult pipid frog, Xenopus laevis was studied by scanning electron microscopy of vascular corrosion casts (VCCs) and correlative light microscopy of paraplast embedded tissues sections. Scanning electron micrographs of VCCs revealed that each neuromast w...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20232
更新日期:2014-05-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1052060311
更新日期:1990-12-01 00:00:00
abstract::The female reproductive system of Sphaerodema rusticum consists of a pair of ovaries, two lateral oviducts, a median common oviduct, and a median spermatheca. Accessory glands are absent. Each ovary has five free ovarioles branching from the oviduct. Each ovariole consists of a terminal filament, germarium, vitellariu...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052050207
更新日期:1990-08-01 00:00:00