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 common with that of higher insects and is similar to that of other Hymenoptera. Structural similarities to spermatozoa of other Hymenoptera include an acrosome containing an internal rod that extends into the nucleus, two elongate mitochondrial derivatives, a centriolar adjunct, and an axonemal arrangement of 9 + 9 + 2 that includes well-developed coarse, or accessory, tubules. Spermatozoa obtained from A. versicolor, a species that is known to store and utilize viable sperm from this supply for over 10 years, show greater development of the mitochondrial derivatives than do the other species. The most distinctive feature of ant spermatozoa in comparison to other Hymenoptera is the large size of the centriolar adjunct relative to the other organelles. The centriolar adjunct is located posterior to the nucleus, anterior to the mitochondrial derivatives, and opposite the axoneme.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Wheeler DE,Crichton EG,Krutzsch PHdoi
10.1002/jmor.1052060311subject
Has Abstractpub_date
1990-12-01 00:00:00pages
343-50issue
3eissn
0362-2525issn
1097-4687journal_volume
206pub_type
杂志文章abstract::This research was designed to follow up the observation of Thornton and Kraemer ('51) that regressed, denervated limbs of Ambystoma larvae will not regenerate upon reinnervation if all digits on the limbs were not completely resorbed. The object of this experiment was to determine whether the presence of an apical str...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051540204
更新日期:1977-11-01 00:00:00
abstract::Electron microscopy of spermatogenesis in the Hawaiian red lobster, Enoplometopus occidentalis (Randall), has revealed unusual activity within membranous organelles. Mitochondria-like bodies (MLB-1) seen first in spermatogonia appear in primary spermatocytes to swell and fuse as the cytoplasm develops annulate lamella...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051900108
更新日期:1986-10-01 00:00:00
abstract::High speed cinematography was used to record the feeding activities of terrestrial Ambystoma tigrinum melanostictum. A description of these activities based on films of more than 50 feeding sequences is presented, and the mechanical units involved are defined, described, and functionally analyzed. Evolutionary implica...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051470203
更新日期:1975-10-01 00:00:00
abstract::All developmental stages of Tanystylum bealensis are described. This is the first complete developmental series of a pycnogonid species collected from a natural, rather than a laboratory-reared population. Development proceeds through a series of nine instars from egg to adult, with major defining characteristics of t...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10402
更新日期:2006-03-01 00:00:00
abstract::The ultrastructure of five epithelial cellular types is described. (1) Absorptive-storing cells possess a striated border and accumulate lipids and glycogen. They also contain an apical multivesicular complex and numerous membrane-bound PAS-positive granules of unknown significance. (2) Zymogenic cells contain numerou...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052020203
更新日期:1989-11-01 00:00:00
abstract::Analysis of lateral and dorsoventral radiographic films shows that ingestion, transport, and mastication in Pedetes capensis (Rodentia) are cyclic and their movement patterns are essentially similar for the three food types offered. During the ingestion cycle, closing of the mouth is accompanied by a backward translat...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052050310
更新日期:1990-09-01 00:00:00
abstract::In uloborid spiders, eye loss is accompanied by increased visual angles, optical material investment, and potential visual acuity of the retained eyes. Relative to carapace volume, the six-eyed Hyptiotes cavatus and two four-eyed Miagrammopes species have greater retinal hemisphere areas and lens volumes than do the e...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051960202
更新日期:1988-05-01 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::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
pub_type: 杂志文章
doi:10.1002/jmor.1051740207
更新日期:1982-11-01 00:00:00
abstract::Previous studies of squamate epidermal structure have focused on either histology and ultrastructure or oberhautchen surface texture as revealed by scanning electron microscopy (SEM). Using SEM data drawn from a variety of lizard taxa (primarily iguanids, but also agamids, chamaeleonids, and scincids), as well as amph...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051970108
更新日期:1988-07-01 00:00:00
abstract::Morphology is strongly correlated with trophic mode in marine invertebrate larvae. We asked if larval morphogenesis is influenced by adelphophagy, a trophic mode in which larvae are provisioned with additional yolk in the form of extra-embryonic nurse eggs, instead of the more common increase in egg size. We used hist...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20071
更新日期:2013-01-01 00:00:00
abstract::Recent molecular phylogenies conflict with traditional scleractinian classification at ranks ranging from suborder to genus, challenging morphologists to discover new characters that better agree with molecular data. Such characters are essential for including fossils in analyses and tracing evolutionary patterns thro...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10899
更新日期:2011-01-01 00:00:00
abstract::The spermatozoal ultrastructure in three solenocerid shrimps (Solenocera membranacea, S. africana, and Pleoticus muelleri) from different Atlantic locations was examined with the aim of increasing understanding of the phylogenetic relationships in the Dendrobranchiata. A considerable structural similarity between the ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10404
更新日期:2006-03-01 00:00:00
abstract::The design of minimum-weight structures that retain their integrity under dynamic loading regimes has long challenged engineers. One solution to this problem found in both human and biological design is the optimization of weight and strength by hollowing a structure and replacing its inner core with supportive struts...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10302
更新日期:2006-10-01 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
pub_type: 杂志文章
doi:10.1002/jmor.20267
更新日期:2014-08-01 00:00:00
abstract::The origins and evolution of the three major clades of modern amphibians are still a source of controversy, and no general consensus exists as to their relationship to the various known Paleozoic taxa. This may indicate that additional character complexes should be studied to resolve their phylogenetic relationship. T...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10769
更新日期:2009-12-01 00:00:00
abstract::In the present investigation the right intracranial portion of the trochlear nerves and dorsal oblique muscle of the right ocular globe were removed from six adult dogs and analyzed by light and electron microscopy. Unmyelinated fibers were observed in the analyzed nerves. The number, diameter, area, and density of my...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10271
更新日期:2004-12-01 00:00:00
abstract::The architectural ground plan of beetle and other insect midguts is represented by a monolayer of epithelial cells arranged in a cylindrical configuration. Proliferation and differentiation of regenerative cells maintain the integrity of this monolayer in the face of continual losses of individual cells through cytopl...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20038
更新日期:2012-09-01 00:00:00
abstract::Complete postorbital bars, bony arches that encompass the lateral aspect of the eye and form part of a circular orbit, have evolved homoplastically multiple times during mammalian evolution. Numerous functional hypotheses have been advanced for postorbital bars, the most promising being that postorbital bars function ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10334
更新日期:2005-06-01 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::The medaka, Oryzias latipes, is a model organism in experimental biology. Its ontogeny and osteology have been studied frequently, but no detailed description of its cranial anatomy exists. Based on manual dissections, histological slide sections, and 3D-reconstructions, we describe the anatomy of the jaw apparatus of...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10746
更新日期:2009-09-01 00:00:00
abstract::During ontogeny, the apical and basal components of dicamptodontid teeth exhibit three major developmental stages: nonpedicellate, subpedicellate, and pedicellate. Premetamorphic larvae tend to have nonpedicellate teeth, incompletely or recently metamorphosed individuals tend to have subpedicellate teeth, and fully tr...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051990204
更新日期:1989-02-01 00:00:00
abstract::A survey of skeletal muscles throughout craniates shows basic kinds of myosin filament arrangement, simple-lattice and superlattice, within the A-band of each sarcomere. Distribution of simple- and superlattice arrangements across a phylogeny of craniates suggests that the superlattice arrangement is primitive and tha...
journal_title:Journal of morphology
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-4687(199609)229:3<325::AID-JMOR
更新日期:1996-09-01 00:00:00
abstract::The olfactory system of the pigeon (Columba livia) was examined. Our electrophysiological and experimental neuroanatomical (Fink-Heimer technique) data showed that axons from the olfactory bulb terminated in both sides of the forebrain. The cortex prepiriformis (olfactory cortex), the hyperstriatum ventrale and the lo...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051580105
更新日期:1978-10-01 00:00:00
abstract::The olfactory epithelium and the vomeronasal organ of the Japanese striped snake were examined by lectin histochemistry. Of the 21 lectins used in the study, all lectins except succinylated-wheat germ agglutinin (s-WGA) showed similar binding patterns in the vomeronasal receptor cells and the olfactory receptor cells ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10864
更新日期:2010-10-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1051720203
更新日期:1982-05-01 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
pub_type: 杂志文章
doi:10.1002/jmor.20476
更新日期:2015-12-01 00:00:00
abstract::The external surface of the cornea and adjacent epidermis of larvae in representative developmental stages and of adult frogs, Rana pipiens, was studied by scanning electron microscopy. Surface cells are polygonal, usually hexagonal, in outline and covered with microprojections. During larval development prior to meta...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051660305
更新日期:1980-12-01 00:00:00
abstract::During the long starvation period (November to June) of the lizard (Varanus exanthematicus), pancreatic B cells undergo profound modification. The degeneration of beta granules observed in electron microscopy appears correlated with the diminution of the immunoreactive insulin-like content of the pancreas. The analogy...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051800302
更新日期:1984-06-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1051970303
更新日期:1988-09-01 00:00:00