Abstract:
:The ultrastructure of the coxal glands and associated tissues in the centipedes Lithobius forficatus and Lithobius crassipes has been examined in the light of two contrasting functional hypotheses postulated by different authors. Lithobiomorph chilopods possess eight sets of pores on the posterioventral border of the coxal podomeres of leg pairs 12-15 in adult (maturus) and subadult (pseudomaturus) stadia. A modified cuticular hypodermis, known as the coxal gland, surrounds the distal portion of each blindended pore. Each gland is made up of cells which contain large numbers of hypertrophied mitochondria and a highly folded apical and basal plasma membrane. The similarity of the coxal gland to so called "transporting epithelia" is discussed and further comparisons are made between these and secretory glands in arthropods. A careful consideration of both functional hypotheses (osmoregulation or pheromone release) has revealed the possibility that the coxal gland may encompass both functions.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Littlewood PMHdoi
10.1002/jmor.1051770204subject
Has Abstractpub_date
1983-08-01 00:00:00pages
157-179issue
2eissn
0362-2525issn
1097-4687journal_volume
177pub_type
杂志文章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
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journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10585
更新日期:2008-04-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
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更新日期:1980-07-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20647
更新日期:2017-03-01 00:00:00
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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
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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
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journal_title:Journal of morphology
pub_type: 杂志文章
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更新日期:1976-11-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20780
更新日期:2018-03-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.21264
更新日期:2020-12-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052090305
更新日期:1991-09-01 00:00:00
abstract::Mandible development in the larval stages I-V of two palaemonid shrimp species, Palaemon elegans and Macrobrachium amazonicum, was analyzed using scanning electron microscopy, light microscopy, and confocal laser scanning microscopy. In contrast to the zoea I of P. elegans, first-stage larvae of M. amazonicum are nonf...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20299
更新日期:2014-11-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1052140311
更新日期:1992-12-01 00:00:00
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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::Internal and external head structures of males of Strepsiptera were examined and the head of a species of Mengenilla is described in detail. The results suggest a reinterpretation of some structures. The head of basal extant strepsipterans is subprognathous, whereas it is strictly orthognathous in the groundplan of St...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10261
更新日期:2006-05-01 00:00:00
abstract::Age and sex-related variations in sternum morphology may affect the thoracic injury tolerance. Male and female sternum size and shape variation was characterized for ages 0-100 from landmarks collected from 330 computed tomography scans. Homologous landmarks were analyzed using Procrustes superimposition to produce ag...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20302
更新日期:2014-11-01 00:00:00
abstract::Abyssocottus korotneffi and Cottinella boulengeri are the deepest-living bottom species among freshwater teleosts. Both species have gill arches with nodulous gill-rakers equipped with sharp denticles. The gill-slit behind the fourth arch is reduced considerably and the hemibranch corresponding to this slit is absent,...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199708)233:2<105::AID-JMOR
更新日期:1997-08-01 00:00:00
abstract::The chimaeroid holocephalian fishes are distinguished among extant chondrichthyans by the possession of three pairs of tooth plates, evergrowing and partially hypermineralized, that are not shed and replaced like the teeth of living elasmobranchs. Although derivation of the chimaeroid tooth plate from the fusion of me...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052220108
更新日期:1994-10-01 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::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
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更新日期:2004-12-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
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更新日期:1983-05-01 00:00:00
abstract::I focus on the crucial links between the discovery of nonhuman primates by Westerners, discussions on our place in nature, the chain of being, racism, and the history of primate comparative anatomy and of so-called "anatomical human racial studies." Strikingly, for more than a millennium humans knew more about the int...
journal_title:Journal of morphology
pub_type: 杂志文章,评审
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更新日期:2018-04-01 00:00:00
abstract::Tardigrada, commonly called water bears, is a taxon of microscopic panarthropods with five-segmented bodies and four pairs of walking legs. Although tardigrades have been known to science for several centuries, questions remain regarding many aspects of their biology, such as embryogenesis. Herein, we used scanning el...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20654
更新日期:2017-04-01 00:00:00
abstract::The common snook, Centropomus undecimalis, was induced to ovulate using a time-release, GnRH analogue. Ovulation occurred the afternoon or evening the day after hormone administration. The time of ovulation was established within half an hour. At ovulation, three fish per time-group were divided into 0, 6, 12, 18 hr a...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20652
更新日期:2017-04-01 00:00:00
abstract::Astroblepidae or "climbing catfishes" encompass a single genus of species living in high altitude rivers in the Andes of South America. They are characterized by a specialized head morphology closely resembling their better known, widely radiated sister family Loricariidae, or armored suckermouth catfishes. Existent d...
journal_title:Journal of morphology
pub_type: 杂志文章
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更新日期:2013-10-01 00:00:00
abstract::The surface areas of the tracheal and cuticular systems of Peripatus acacioi individuals of different body weights were determined by morphometric analysis. The results demonstrate that both surfaces increase with body weight, although the observed increase in the surface area of the tracheal system appears to be at a...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051880210
更新日期:1986-05-01 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 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 structure of contact chemoreceptors in the cibariopharyngeal pump of the moth Trichoplusia ni (Lepidoptera: Noctuidae) is described. Two types of receptors designated A and B are located on the floor of the pump. Two groups of 9-12 A receptors are located in the anterior part of the pump, and two groups of two B r...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051600103
更新日期:1979-04-01 00:00:00
abstract::Patterns of growth and variation of the appendicular skeleton were examined in Thorius, a speciose genus of minute terrestrial plethodontid salamanders from southern Mexico. Observations were based primarily on ontogenetic series of each of five species that collectively span the range of adult body size in the genus;...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051740106
更新日期:1982-10-01 00:00:00
abstract::The Hawaiian Drosophilidae possess spectacular diversity in male foreleg modifications, many of which are unknown in other Diptera. The greatest diversity in foreleg morphology is in the antopocerus, modified tarsus, and ciliated tarsus clade (AMC Clade), a group of 95 species. The modified tarsus flies are divided in...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10783
更新日期:2010-01-01 00:00:00