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 results tentatively support the monophyly of Scirtoidea and a close relationship between Clambidae and Eucinetidae is suggested by one shared derived feature of the mandible, a long and slender apical tooth with a serrate edge. The monophyly of Clambidae is very strongly supported and Acalyptomerus is probably the sistergroup of a clade Calyptomerus + Clambinae. Potential scirtoid autapomorphies are the loss of the dorsal tentorial arms, a bulging gula, a strongly transverse labrum, and a ridge separating the mediostipes from the lacinia. However, all these features are homoplasious. The monophyly of Clambidae is supported by modifications of the head capsule which is strongly flattened and broadened, by a deep clypeofrontal incision enabling vertical antennal movements, and a series of antennal features. Synapomorphies of Clambinae + Calyptomerus (Clambidae excluding Acalyptomerus) are the conglobate body form with the ventral side of the head capsule in contact with the mesocoxae, and compound eyes integrated in the contour of the head. The completely subdivided eye is an autapomorphy of Clambus. An entire series of features is shared by Clambidae (or Scirtoidea) and Myxophaga. Most of them are apomorphies that apparently evolved independently in both groups. However, the presence of well-developed maxillary and labial glands is arguably a retained groundplan feature of Coleoptera, with parallel loss in Archostemata, Adephaga and various groups of Polyphaga.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Anton E,Yavorskaya MI,Beutel RGdoi
10.1002/jmor.20524subject
Has Abstractpub_date
2016-05-01 00:00:00pages
615-33issue
5eissn
0362-2525issn
1097-4687journal_volume
277pub_type
杂志文章abstract::Ventral bars, cartilaginous projections from the ventral aspect of the synsacrum that contact and form a joint with the ilium, were found in all normal chick embryos of age E9 and older. Bars were absent in a number of embryos which had been paralyzed from age E4 by the use of the acetylcholine receptor blocker alpha-...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051730205
更新日期:1982-08-01 00:00:00
abstract::Osmotically induced alterations in the ultrastructure of the apical crypts of chloride cells and changes in chloride efflux were studied in striped bass (Morone saxatilis). Striped bass were divided into three groups: fish adapted to freshwater, fish transferred directly from freshwater to 100% seawater (3% salt, w/v)...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052090204
更新日期:1991-08-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1051570107
更新日期:1978-07-01 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::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::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::Studies of echinoid microscopic anatomy over the last two centuries have created a number of inaccuracies and mistakes that have accumulated in the descriptions of the intricate organization of the coelomic system of Echinoidea. To clarify the situation, we reconstructed the axial complex and radial complex of the ech...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20811
更新日期:2018-06-01 00:00:00
abstract::The purpose of this study was to clarify the general architecture and morphological variations of the autonomic cardiac nervous system (ACNS) in the African Cercopithecidae (Old World monkeys), and to discuss the evolutionary changes between this system in African/Asian Cercopithecidae and humans. A detailed macroscop...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10549
更新日期:2007-09-01 00:00:00
abstract::Feeding mechanics of vertebrates depend on physical constraints of the surrounding media, water or air. Such functions are inseparably combined with form. The aim of this study is to show this linkage for the pleurodiran freshwater turtle Pelusios castaneus and, additionally, to point out the major functional and biom...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(200005)244:2<127::AID-JMOR
更新日期:2000-05-01 00:00:00
abstract::The penises of bats are taxonomically distinctive in size and shape. In addition, they are variable in microscopic anatomy, indicating that histomorphological studies of copulatory organs of bats may help understanding their successful reproductive strategies. We studied adult males of 13 species of vespertilionid and...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.21062
更新日期:2019-12-01 00:00:00
abstract::A morphological comparison of the spermatozoa of the octopods Bathypolypus bairdii and B. sponsalis has been carried out by electron microscopy. Although the mature spermatozoon of B. bairdii is longer and thinner than that of B. sponsalis, its general ultrastructure is similar except for some minor differences. Their...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10787
更新日期:2010-02-01 00:00:00
abstract::Branchial food traps are regions of specialized secretory tissue in the tadpole pharynx, where suspended food particles are trapped in mucus. Light and scanning electron microscopy were used to study branchial food traps from larvae of ten anuran families (36 species). Most anuran larvae from "advanced" (suborder Neob...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051590307
更新日期:1979-03-01 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
pub_type: 杂志文章
doi:10.1002/jmor.20673
更新日期:2017-06-01 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::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::Using immunocytochemistry at light- and electron-microscope levels, we studied the distribution of three monoclonal antibodies (AE1, AE2, AE3) specific for mammalian alpha-keratins in regenerating lizard epidermis. We also characterized the keratins expressed during this process by immunoblotting after electrophoretic...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/1097-4687(200012)246:3<179::AID-JMOR2>3.0.
更新日期:2000-12-01 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
doi:10.1002/jmor.20169
更新日期:2013-10-01 00:00:00
abstract::A hitherto unknown sensillum type, the "intracuticular sensillum" was identified on the dactyls of the walking legs of the shore crab, Carcinus maenas. Each sensillum is innervated by two sensory cells with dendrites of "scolopidial" (type I) organization. The ciliary segment of the dendrite is 5-6 μm long and contain...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052040311
更新日期:1990-06-01 00:00:00
abstract::The morphology of the upper, lower, and pharyngeal jaws is very similar among American cichlids. Common conditions are: (1) the presence of a premaxillary dentigerous arm shorter than the ascending arm (exceptions are Astronotus, Cichla, and Crenicichla semifasciata), (2) a narrow coulter area; in contrast, a broad co...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052170102
更新日期:1993-07-01 00:00:00
abstract::The orientation of the semicircular canals of the inner ear in the skull of vertebrates is one of the determinants of the capacity of this system to detect a given rotational movement of the head. Past functional studies on the spatial orientation of the semicircular canals essentially focused on the lateral semicircu...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20665
更新日期:2017-05-01 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 fine structure of the shell and underlying mantle in young juveniles of the articulate brachiopod Terebratalia transversa has been examined by electron microscopy. The first shell produced by the mantle consists of a nonhinged protegulum that lacks concentric growth lines. The protegulum is secreted within a day a...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051830303
更新日期:1985-03-01 00:00:00
abstract::Early spermatids of the onychophoran Peripatopsis capensis are spherical cells with a centrally located nucleus, numerous mitochondria, Golgi complexes, microtubules and two centrioles. During spermiogenesis, Golgi vesicles migrate to one side of the cell where they form a tight aggregate, which is later shed. The mat...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051590104
更新日期:1979-01-01 00:00:00
abstract::Development of the yolk sac of squamate reptiles (lizards and snakes) differs from other amniote lineages in the pattern of growth of extraembryonic mesoderm, which produces a cavity, the yolk cleft, within the yolk. The structure of the yolk cleft and the accompanying isolated yolk mass influence development of the a...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20052
更新日期:2012-10-01 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 ventral surface of the most proximal tarsomere of each mesothoracic leg of the female black fly, Simulium venustum Say, bears approximately 60 bifurcate sensilla. Externally, a sensillum appears as a hair set into an asymmetric socket and with the distal tip flattened into two flared lobes. A single pore opens int...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051650102
更新日期:1980-07-01 00:00:00
abstract::The feline anterior sartorius is a long strap-like muscle composed of short muscle fibers. Nerve branches that enter this muscle contain the axons of motor units whose constituent muscle fibers are distributed asymmetrically within the muscle. In the present study, twitch and tetanic isometric contractions were evoked...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052130204
更新日期:1992-08-01 00:00:00
abstract::Tadpoles of several different genera were fed graded suspensions of uniform polystyrene particles to determine the lower size limit of particles that could be ingested. Certain tadpoles can extract suspended particles as small as 0.126 μ in diameter from the water. In terms of particle size, this is an efficiency comp...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051370303
更新日期:1972-07-01 00:00:00
abstract::The plainfin midshipman fish Porichthys notatus has both inter- and intra-sexual dimorphism in the sound-producing (vocal or sonic) muscles attached to the swimbladder wall. The "Type I" and "Type II" male morphs differ in that dramatic structural changes related to sexual maturity occur in the mass, the area of mitoc...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052160306
更新日期:1993-06-01 00:00:00
abstract::Oviductal structure is described in New Zealand's common gecko, Hoplodactylus maculatus, over four reproductive stages (early/mid-vitellogenesis, late vitellogenesis, early pregnancy, late pregnancy), using light, scanning electron, and transmission electron microscopy. Five regions of the oviduct are recognized: infu...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199710)234:1<51::AID-JMOR5
更新日期:1997-10-01 00:00:00