Journal of Morphology

Cover image for Vol. 278 Issue 9

Early View (Online Version of Record published before inclusion in an issue)

Edited By: J. Matthias Starck

Impact Factor: 1.655

ISI Journal Citation Reports © Ranking: 2016: 7/21 (Anatomy & Morphology)

Online ISSN: 1097-4687


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    1. Allometry and morphometrics of clypeal membrane size and shape in Nicrophorus (Coleoptera: Silphidae)

      Jillian D. Wormington and Barney Luttbeg

      Version of Record online: 29 JUL 2017 | DOI: 10.1002/jmor.20736

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      Nicrophorus clypeal membranes exaggerate body size, sometimes more noticeably in males.

    2. The vocal sac of Hylodidae (Amphibia, Anura): Phylogenetic and functional implications of a unique morphology

      Agustin J. Elias-Costa, Rachel Montesinos, Taran Grant and Julián Faivovich

      Version of Record online: 25 JUL 2017 | DOI: 10.1002/jmor.20727

      Thumbnail image of graphical abstract

      Unlike all other anurans, the vocal sac wall of hylodids projects through submandibular musculature. We report three synapomorphies for Hylodidae and a mechanism for unilateral inflation of paired vocal sacs, only observed in these frogs.

    3. Identification of a new mineralized tissue in the notochord of reared Siberian sturgeon (Acipenser baerii)

      Amandine Leprévost, Thierry Azaïs, Michael Trichet and Jean-Yves Sire

      Version of Record online: 25 JUL 2017 | DOI: 10.1002/jmor.20734

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      A mineralized structure, composed of amorphous calcium phosphates and never reported in vertebrates, was found in the notochord of Acipenser baerii from 2 years onwards. We describe this enigmatic tissue using CT-scan, histological analyses and solid state NMR spectroscopy

    4. The colonic groove of the plains viscacha (Lagostomus maximus): Histochemical evidence of an abrupt change in the glycosylation pattern of goblet cells

      María Florencia Tano de la Hoz, Mirta Alicia Flamini, Carolina Natalia Zanuzzi and Alcira Ofelia Díaz

      Version of Record online: 20 JUL 2017 | DOI: 10.1002/jmor.20735

      Thumbnail image of graphical abstract

      The groove was formed by two nonpapillated ridges (R). These ridges divided the lumen of the ascending colon into two compartments: the groove lumen (G) and the large main lumen (MLu). The histochemical analysis revealed significant differences among goblet cells in and out of the colonic groove, being this the first time an abrupt change in the glycosylation pattern of the intestinal tract of L. maximus is described (see dotted lines).

    5. Dimorphic ejaculates and sperm release strategies associated with alternative mating behaviors in the squid

      Lígia H. Apostólico and José E. A. R. Marian

      Version of Record online: 18 JUL 2017 | DOI: 10.1002/jmor.20726

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      Different selective pressures over males with alternative mating tactics may lead to intraspecific diversity in ejaculates, for example, sneakers sperm aggregation, possibly related to avoiding dilution and slowing spermatozoa release until fertilization.

    6. Trunk elongation and ontogenetic changes in the axial skeleton of Triturus newts

      Petar Govedarica, Milena Cvijanović, Maja Slijepčević and Ana Ivanović

      Version of Record online: 15 JUL 2017 | DOI: 10.1002/jmor.20733

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      Evolutionary changes in body elongation in Triturus newts are achieved by increasing the number of vertebrae but not their length. Ontogenetic changes of vertebrae in axial skeleton are proportional in T. dobrogicus, but disproportional in T. karelinii morphotype.

    7. Embryonic development of Eucorydia yasumatsui Asahina, with special reference to external morphology (Insecta: Blattodea, Corydiidae)

      Mari Fujita and Ryuichiro Machida

      Version of Record online: 14 JUL 2017 | DOI: 10.1002/jmor.20725

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      Two types of blastokinesis are found in Dictyoptera: one is the “reversion type” (top) in blattoidean cockroaches and termites, and another the “non-reversion type” (below) in blaberoidean cockroaches and mantises.

    8. Interspecific variation in the tetradactyl manus of modern tapirs (Perissodactyla: Tapirus) exposed using geometric morphometrics

      Jamie A. MacLaren and Sandra Nauwelaerts

      Version of Record online: 13 JUL 2017 | DOI: 10.1002/jmor.20728

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      A simplified phylogeny demonstrating gross differences in the manus morphology of modern tapirs. Bones with lighter colours (higher specificity %) represent higher levels of morphological difference between species, darker colours represent bones that are misclassified more frequently. Each tapir species is represented by a silhouette diagram demonstrating generalised appearance.

    9. The morphology of the male reproductive system, spermatogenesis and the spermatozoon of Daphnia magna (Crustacea: Branchiopoda)

      Maggie Wuerz, Erwin Huebner and Judith Huebner

      Version of Record online: 10 JUL 2017 | DOI: 10.1002/jmor.20729

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      Testis structure of Daphnia magna, showing muscles in red, labeled with Phalloiden, and developing nuclei in blue, labeled with Hoechst.

    10. Formation and function of the “Xestoleberis-spot” in Xestoleberis hanaii (Crustacea: Ostracoda)

      Shinnosuke Yamada

      Version of Record online: 10 JUL 2017 | DOI: 10.1002/jmor.20731

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      EM observations on both, intermoult and postmoult stages of Xestoleberis species reveal that the “Xestoleberis-spot” system consists of three elements; two calcified chambers, a vesicle of electron-dense material and an uncalcified procuticle.

    11. Intra- and Intersexual swim bladder dimorphisms in the plainfin midshipman fish (Porichthys notatus): Implications of swim bladder proximity to the inner ear for sound pressure detection

      Robert A. Mohr, Elizabeth A. Whitchurch, Ryan D. Anderson, Paul M. Forlano, Richard R. Fay, Darlene R. Ketten, Timothy C. Cox and Joseph A. Sisneros

      Version of Record online: 10 JUL 2017 | DOI: 10.1002/jmor.20724

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      Plainfin midshipman females and type II males (an alternative male sexual phenotype) have prominent, horn-like rostral swim bladder extensions which are lacking in nesting type I males, that increase the proximity to the auditory end organs.

    12. Structure and ultrastructure of eyes and brains of Thalia democratica (Thaliacea, Tunicata, Chordata)

      Katrin Braun and Thomas Stach

      Version of Record online: 10 JUL 2017 | DOI: 10.1002/jmor.20722

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      Salps are unusual marine plankton with alternating generations. Sexual stages possess three eyes, asexual stages a single horseshoe-shaped eye. Eyes consist of pigment cells and rhabdomeric photoreceptor cells. We suggest that differences evolved as a result of life styles of the two stages.

    13. Shape analysis of the jaws between two minnow species over ontogeny

      Colby J. Gerth and Anabela Maia

      Version of Record online: 7 JUL 2017 | DOI: 10.1002/jmor.20721

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      Pharyngeal jaws of two minnow species.

    14. Ovarian nests in cultured females of the Siberian sturgeon Acipenser baerii (Chondrostei, Acipenseriformes)

      Monika Żelazowska and Dorota Fopp-Bayat

      Version of Record online: 6 JUL 2017 | DOI: 10.1002/jmor.20723

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      Germline cysts are composed of cystocytes (Cyst). The PACH oocytes are in the pachytene and early diplotene stages of first prophase, the DIP oocytes are in the diplotene stage. Somatic cells (SC) and degenerating cystocytes (asterisks) are present.

    15. Morphology of the tongue of Vermilingua (Xenarthra: Pilosa) and evolutionary considerations

      Daniel M. Casali, Elisângela Martins-Santos, André L. Q. Santos, Flávia R. Miranda, Germán A. B. Mahecha and Fernando A. Perini

      Version of Record online: 22 JUN 2017 | DOI: 10.1002/jmor.20718

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      Graphical Abstract

      The peculiar tongue of anteaters was investigated with gross anatomical observations, scanning electron microscopy and histological techniques. The morphology observed in the tongues of anteaters reflects the adaptive specialization of the organ for myrmecophagy. Comparing it with that of other xenarthrans, it is possible to infer some aspects about the evolution of the organ in the group. Picture of Tamandua tetradactyla by Karina Molina.

    16. How common are cranial sesamoids among squamates?

      Ricardo Montero, Juan D. Daza, Aaron M. Bauer and Virginia Abdala

      Version of Record online: 20 JUN 2017 | DOI: 10.1002/jmor.20719

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      The presence of sesamoids on the skeleton of squamate lizards have been described almost exclusively from the appendicular skeleton. In this article, we report two ossicles in the skull of squamates that fulfill the definition of sesamoid elements: one associated with the quadrate bone, and the other with the braincase, previously described as the element X. The latter bone is widespread among squamates, being present in members of major squamate clades with the exception of snakes. Graphic abstract figure indicates the presence of element X among squamate clades (red branches), illustrated here by three groups where this element was unknown, Gekkota (1. Chondrodactylus angulifer, 2. Paradelma orientalis) and Gymophthalmidae (3. Calyptommatus leiolepis).

    17. Pretarsal structures in Leiodidae and Agyrtidae (Coleoptera, Staphylinoidea)

      Pedro Gnaspini, Caio Antunes-Carvalho and Richard A. B. Leschen

      Version of Record online: 11 JUN 2017 | DOI: 10.1002/jmor.20717

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      Graphical Abstract

      Comparative morphology of the empodium and medial projection of distal margin of the apical tarsomere and armature of tarsal claws in leiodids and related taxa indicate a wealth of new diagnostic features and potential synapomorphies for family-groups.

    18. Correlates between calcaneal morphology and locomotion in extant and extinct carnivorous mammals

      Elsa Panciroli, Christine Janis, Maximilian Stockdale and Alberto Martín-Serra

      Version of Record online: 11 JUN 2017 | DOI: 10.1002/jmor.20716

      Thumbnail image of graphical abstract

      We employ linear measurements and 2D geometric morphometrics to examine how the morphology of the calcaneum, the ‘heel bone’, correlates with locomotion in extant carnivores. We use these correlations to determine the locomotor mode, and hence aspects of the probable palaeobiology, of 47 extinct taxa including members of Carnivora and Creodonta.

    19. Patterns of morphological integration between parietal and temporal areas in the human skull

      Emiliano Bruner, Ana Sofia Pereira-Pedro and Markus Bastir

      Version of Record online: 2 JUN 2017 | DOI: 10.1002/jmor.20714

      Thumbnail image of graphical abstract
      • The curvature and form of the parietal bone does not influence the position of the temporal poles in the human skull
      • The size and shape of the parietal bone influences the orientation on the head
    20. The lungs of Polypterus senegalus and Erpetoichthys calabaricus: Insights into the structure and functional distribution of the pulmonary epithelial cells

      José M. Icardo, Elvira Colvee, Michal Kuciel, Eugenia R. Lauriano and Giacomo Zaccone

      Version of Record online: 31 MAY 2017 | DOI: 10.1002/jmor.20715

      Thumbnail image of graphical abstract

      E. calabaricus. Detail of ciliated band. Ciliated cells (arrow) show prominent ciliary tufts and contain secretory bodies. Goblet cells (G) show secretory bodies and may contain lamellar bodies. Pneumocytes type 2 (double arrow) contain lamellar bodies, may also contain secretory bodies, and are restricted to the ciliated bands. The subepithelium is a thin layer, appears limited by collagen and contains fibroblasts (F) and granulocytes. External to this area is a thin layer of smooth muscle and a thick striated muscle layer with myelinated and non-myelinated nerve fibers. Scale bar, 5 microns.


    1. In Memoriam: Dr. Frederick W. Harrison (1938–2016)

      Prof. Dr. Fernando Pardos, Prof. Dr. Paul F Maderson and Prof. Dr. Matthias Starck

      Version of Record online: 8 APR 2017 | DOI: 10.1002/jmor.20683

  3. Research Articles

    1. Ear ossicle morphology of the Jurassic euharamiyidan Arboroharamiya and evolution of mammalian middle ear

      Jin Meng, Shundong Bi, Xiaoting Zheng and Xiaoli Wang

      Version of Record online: 26 MAY 2016 | DOI: 10.1002/jmor.20565

    2. Bony labyrinth morphology in early neopterygian fishes (Actinopterygii: Neopterygii)

      Sam Giles, Molly Rogers and Matt Friedman

      Version of Record online: 10 MAY 2016 | DOI: 10.1002/jmor.20551


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