Abstract:
:Three regions of the byssus of the marine mussel Mytilus edulis L. are distinct in structural organization at the macroscopic and microscopic level and in amino acid composition. The threads that emanate from the stem at the base of the foot are divided into two regions. The proximal, elastic region has a crimped, densely staining cortex enclosing an interior matrix of spiral fibers, and its amino acid composition reflects protein heterogeneity. The more distal, rigid region has a straight, tubular cortex surrounding an inner matrix of linearly arranged bundles of fibrils and has a composition approximating pure collagen. The plaque, or disc-shaped portion, which mediates attachment to various substrates, is distinguished by a surface matrix of collagen-like fibers similar to those of the thread region and anchored on an inner spongy matrix. Compositional evidence exists for a collagenous component, a catechol-rich protein, and at least one other accessory protein in the plaque.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Benedict CV,Waite JHdoi
10.1002/jmor.1051890305subject
Has Abstractpub_date
1986-09-01 00:00:00pages
261-70issue
3eissn
0362-2525issn
1097-4687journal_volume
189pub_type
杂志文章abstract::The structure of the nephron in the ranid frog, Rana cancrivora, was studied by light and electron microscopy. This frog is the only amphibian species to live in mangrove swamps of very high salinity. The nephron consists of the following parts: renal corpuscle, ciliated neck segment, proximal tubule, ciliated interme...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052040204
更新日期:1990-05-01 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::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
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199811)238:2<179::AID-JMOR
更新日期:1998-11-01 00:00:00
abstract::The dermopteran basicranium combines a primitively constructed and oriented auditory bulla formed by ectotympanic, rostral entotympanic, and tubal cartilage with derived features of the middle ear transformer and internal carotid circulation. Living dermopterans possess a primitive eutherian auditory region that has b...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051640206
更新日期:1980-05-01 00:00:00
abstract::After placing in vitro, central subgerminal ooplasm (containing a central nucleus of Pander) from a quail germ disc of a prelaid egg (before symmetrization) on the upper layer of an isolated chicken antisickle, we observed the induction of a radially oriented preneural plate (without interference of chordamesoblast). ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10203
更新日期:2004-05-01 00:00:00
abstract::Relationships among families of the shark order Carcharhiniformes are still being debated, for example, in relation to the inclusion of hammerhead sharks (Sphyrnidae) and the tiger shark (Galeocerdo cuvier) in the Carcharhinidae. Previous morphological studies have not analyzed the phylogenetic significance of axial c...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20916
更新日期:2019-01-01 00:00:00
abstract::Tooth development and replacement in fetal and adult viviparous caecilians (Amphibia: Gymnophiona) are described and analyzed according to current theories of tooth succession. The fetal dentition differs from that of the adult in morphology, position, and function. Teeth are used by fetuses to scrape the oviducal epi...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051480104
更新日期:1976-01-01 00:00:00
abstract::The development of diet-induced phenotypic differences in numbers of sensilla on the antennae of the grasshopper Schistocerca americana was studied using the exuviae produced at each molt. This made it possible to follow changes within an individual insect. In the first instar, insects had similar numbers of four sens...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10026
更新日期:2002-11-01 00:00:00
abstract::Knowledge about the diversity, locomotor adaptations, and evolution of the marsupial forelimb is limited, resulting in an underrepresentation of marsupials in comparative anatomical literature on mammalian forelimb anatomy. This study investigated hand proportions in the diverse marsupial order Diprotodontia. Fifty-tw...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10495
更新日期:2006-12-01 00:00:00
abstract::The present study examined the morphometric properties of the forelimb, including the inertial properties of the body segments and the morphometric parameters of 21 muscles spanning the shoulder and/or elbow joints of six Macaca mulatta and three M. fascicularis. Five muscle parameters are presented: optimal fascicle ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/1097-4687(200009)245:3<206::AID-JMOR3>3.0.
更新日期:2000-09-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1051690209
更新日期:1981-08-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1052070307
更新日期:1991-03-01 00:00:00
abstract::Eggs of Xenopoecilus sarasinorum possess two distinct types of filaments on the surface of the egg envelope (chorion), long, attaching filaments restricted to the vegetal pole and weak, nonattaching filaments around the animal pole (micropyle). Both types are formed during oogenesis. After mature eggs were spawned thr...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10620
更新日期:2008-06-01 00:00:00
abstract::The masticatory pattern of Sphenodon punctatus, the sole remaining rhynchocephalian, now restricted to islands off the coast of New Zealand, has been analyzed by detailed anatomy, cinematography, cinefluoroscopy, and electromyography. Food reduction consists of a closing, crushing bite followed by a propalineal slidin...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051710307
更新日期:1982-03-01 00:00:00
abstract::The morphology of 16 occipital spines of the xenacanthid Orthacanthus from Upper Carboniferous deposits of Robinson (Kansas, USA), Nýran (Czech Republic) and Puertollano (Spain) is described. The nonreplaced spines reveal the growth pattern of the shark. Moreover, the relationship between growth and paleoenvironmental...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199910)242:1<1::AID-JMOR2>
更新日期:1999-10-01 00:00:00
abstract::Larval and juvenile air breathing fish may experience nocturnal and/or seasonal aquatic hypoxia. Yet, whether hypoxia induces respiratory developmental plasticity in larval air breathing fish is uncertain. This study predicted that larvae of two closely related anabantid fish-the facultative air breather the Siamese f...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20931
更新日期:2019-02-01 00:00:00
abstract::Sea urchin adoral tube feet are highly specialized organs that have evolved to provide efficient attachment to the substratum. They consist of a disk and a stem that together form a functional unit. Tube foot disk tenacity (adhesive force per unit area) and stem mechanical properties (e.g., stiffness) vary between spe...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.11004
更新日期:2012-01-01 00:00:00
abstract::The femoral or cloacal region of many species of lizards and amphisbaenians exhibits epidermal glands. The pores of these glands are plugged with holocrine solid secretions that serve as semiochemical sources. Many authors assume that these glands are mainly associated with reproduction and demarcation of territory. T...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199909)241:3<197::AID-JMOR
更新日期:1999-09-01 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::Allografts of skin were observed in Chelydra serpentina. The response to these grafts was modified by a previous transplantation of a limb bud at an early embryonic stage. When the same donor was used for all transplants, the first skin graft was accepted by the host. A second skin graft, however, was rejected at abou...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051440407
更新日期:1974-12-01 00:00:00
abstract::The ultrastructure of the adenohypophysis (AH) in the larval anadromous sea lamprey, Petromyzon marinus L., was examined. The AH is subdivided into three regions, the pro-, meso-, and meta-AH. Cells of the nasopharyngeal stalk extend directly beneath the pro- and meso-AH to form the ventral surface of the gland. Some ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051760306
更新日期:1983-06-01 00:00:00
abstract::Morphologists and systematists have long suspected that dietary consistency can affect skull and dental form in mammals. We examined plasticity of skull shape and tooth morphology in prairie deer mice (Peromyscus maniculatus bairdii) by feeding mice diets that differed in consistency but not nutritional quality. Shape...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199608)229:2<229::AID-JMOR
更新日期:1996-08-01 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
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199911)242:2<91::AID-JMOR2
更新日期:1999-11-01 00:00:00
abstract::The interradicular periodontal ligament of mandibular molars contains an apparently unique dilated vessel straddling the interradicular alveolar bone. This structure is designated a venous ampulla. The vessel possesses a luminal length and width of approximately 200 X 100 microns, respectively. Ultrastructurally, the ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051910303
更新日期:1987-03-01 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::This study details the gross and microscopic anatomy of the pelvic kidney in male Ambystoma maculatum. The nephron of male Ambystoma maculatum is divided into six distinct regions leading sequentially away from a renal corpuscle: (1) neck segment, which communicates with the coelomic cavity via a ventrally positioned ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10883
更新日期:2010-12-01 00:00:00
abstract::The morphology of the jaw suspension and jaw protrusion mechanism in lamniform sharks is described and mapped onto a cladogram to investigate how changes in jaw suspension and protrusion have evolved. This has revealed that several evolutionary modifications in the musculoskeletal apparatus of the jaws have taken plac...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10342
更新日期:2005-07-01 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
pub_type: 杂志文章
doi:10.1002/jmor.20626
更新日期:2017-01-01 00:00:00
abstract::The phylogenetic position of the Ectoprocta within the Lophotrochozoa is discussed controversially. For gaining more insight into ectoproct relationships and comparing it with other potentially related phyla, we analysed the myoanatomy and serotonergic nervous system of adult representatives of the Phylactolaemata (Pl...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.11006
更新日期:2012-01-01 00:00:00
abstract::The amphibian tongue contains two types of papilla which are believed to function in gustation and in the secretion of salivary fluid. Scanning electron microscopy reveals that columnar, filiform papillae are compactly distributed over nearly the entire dorsal surface of the tongue of the frog, Rana cancrivora, and fu...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052150106
更新日期:1993-01-01 00:00:00