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Avian Research 2023年第4期14卷 523-532页

作者： Ali Gholamhosseini Mansour Aliabadian Till Topfer Glenn-Peter Sætre Ornithology Research Laboratory Department of BiologySchool of ScienceShiraz UniversityShirazIran Department of Biology Faculty of SciencesFerdowsi University of MashhadMashhadIran Leibniz Institute for the Analysis of Biodiversity Change Zoological Research Museum Alexander KoenigCentre for Taxonomy and MorphologyBonnGermany Centre for Ecological and Evolutionary Synthesis(CEES) Department of BiosciencesUniversity of OsloNorway

The closely related Black-headed Bunting(Emberiza melanocephala,a western Palearctic lineage)and Red-headed Bunting(Emberiza bruniceps,an eastern Palearctic lineage)hybridize and replace each other south of the Caspian *** parental species have distinct phenotypes and therefore morphology is useful for assessing hybridization in the contact *** the years of 1940 and 1977,quite a few hybrids were collected and studied *** then,the hybrid zone appears to have expanded westwards,but there has been a time gap in the collection of morphological *** we reanalyze bunting specimens morphologically and compare the historical data with recent *** and phenotypic traits from three time periods(1940,1977 and recent)were studied to assess phenotypic variation of hybrids,pattern of hybridization,and transgressive traits in the hybrid *** results show that most of the birds in the hybrid zone exhibit intermediate phenotypes(both colors and morphometric characters),ranging from the pure phenotype of either of the parental ***,hybridization has also produced novel phenotypes not seen in any of the *** a canonical discriminant function analysis,the morphometric characters separated each parental species and the hybrids quite *** results showed morphometric intermediacy of hybrids in accordance with *** observe a time trend in which recent hybrids are more similar to Red-headed Buntings phenotypically compared to historical *** pattern is likely a signature of a westward expansion of the Red-headed Bunting into the breeding range of the Black-headed Bunting.

关键词： Bunting Hybridization Intermediate phenotypes Transgressive traits

Sagittal crest morphology decoupled from relative bite performance in Pleistocene tapirs(Perissodactyla:Tapiridae)

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Integrative Zoology 2023年第2期18卷 254-277页

作者： Lisa VAN LINDEN Kim STOOPS Larissa C.C.S.DUMBÁ Mario A.COZZUOL Jamie A.MACLAREN Functional morphology Lab Department of BiologyCampus Drie EikenUniversiteit AntwerpenAntwerpenBelgium Departamento de Zoologia Instituto de Ciências BiológicasUniversidade Federal de Minas GeraisMinas GeraisBrazil Evolution and Diversity Dynamics Lab Department of GeologyUniversitéde LiègeQuartier AgoraLiègeBelgium

Bite force is often associated with speciﬁc morphological features,such as sagittal *** presence of a pro-nounced sagittal crest in some tapirs(Perissodactyla:Tapiridae)was recently shown to be negatively correlated with hard-object feeding,in contrast with similar cranial structures in *** aim of this study was to investi-gate bite forces and sagittal crest heights across a wide range of modern and extinct tapirs and apply a comparative investigation to establish whether these features are correlated across a broad phylogenetic *** examined a sample of 71 specimens representing 15 tapir species(5 extant,10 extinct)using the dry-skull method,linear measurements of cranial features,phylogenetic reconstruction,and comparative *** were found to ex-hibit variation in bite force and sagittal crest height across their phylogeny and between different biogeographical realms,with high-crested morphologies occurring mostly in Neotropical *** highest bite forces within tapirs appear to be driven by estimates for the masseter–pterygoid muscle complex,rather than predicted forces for the temporalis *** results demonstrate that relative sagittal crest height is poorly correlated with relative cranial bite force,suggesting high force application is not a driver for pronounced sagittal crests in this *** divergent biomechanical capabilities of different contemporaneous tapirids may have allowed multiple species to occupy overlapping territories and partition resources to avoid excess *** forces in tapirs peak in Pleistocene species,independent of body size,suggesting possible dietary shifts as a potential result of climatic changes during this epoch.

关键词： biogeography dry-skull method herbivory mastication niche partitioning Pleistocene

Changes of the glutathione redox system during the weaning transition in piglets, in relation to small intestinal morphology and barrier function

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Journal of Animal Science and Biotechnology 2020年第4期11卷 993-1008页

作者： Jeroen Degroote Hans Vergauwen Wei Wang Chris Van Ginneken Stefaan De Smet Joris Michiels Laboratory for Animal Nutrition and Animal Product Quality(LANUPRO) Department of Animal Sciences and Aquatic EcologyFaculty of Bioscience EngineeringGhent UniversityBlock FCampus CoupureCoupure Links 6539000 GhentBelgium Laboratory of Applied Veterinary morphology Department of Veterinary SciencesFaculty of BiomedicalPharmaceutical and Veterinary SciencesUniversity of AntwerpUniversiteitsplein 1WilrijkBelgium.

Background: Weaning is known to result in barrier dysfunction and villus atrophy in the immediate post-weaning phase, and the magnitude of these responses is hypothesized to correlate with changes in the glutathione(GSH)redox system. Therefore, these parameters were simultaneously measured throughout the weaning phase, in piglets differing in birth weight category and weaning age, as these pre-weaning factors are important determinants for the weaning transition. Low birth weight(LBW) and normal birth weight(NBW) littermates were assigned to one of three weaning treatments;i.e. weaning at 3 weeks of age(3 w), weaning at 4 weeks of age(4 w) and removal from the sow at 3 d of age and fed a milk replacer until weaning at 3 weeks of age(3 d3 w). For each of these treatments, six LBW and six NBW piglets were euthanized at 0, 2, 5, 12 or 28 d post-weaning piglets, adding up 180 ***: Weaning increased the glutathione peroxidase activity on d 5 post-weaning in plasma, and duodenal and jejunal mucosa. Small intestinal glutathione-S-transferase activity gradually increased until d 12 post-weaning, and this was combined with a progressive rise of mucosal GSH up till d 12 post-weaning. Oxidation of the GSH redox status(GSH/GSSG Eh) was only observed in the small intestinal mucosa of 3 d3 w weaned piglets at d 5 postweaning. These piglets also demonstrated increased fluorescein isothiocyanate dextran(FD4) and horseradish peroxidase fluxes in the duodenum and distal jejunum during the experiment, and specifically demonstrated increased FD4 fluxes at d 2 to d 5 post-weaning. On the other hand, profound villus atrophy was observed during the weaning transition for all weaning treatments. Finally, LBW and NBW piglets did not demonstrate notable differences in GSH redox status, small intestinal barrier function and histo-morphology throughout the ***: Although moderate changes in the GSH redox system were observed upon weaning, the GSH redox status remai

关键词： Barrier function Glutathione Oxidative stress Redox status Small intestine Weaned piglet

Association of morphology and Immunophenotype in Diffuse Large B-Cell Lymphomas with Bone Marrow Infiltration in a Sample Mexican Population

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Open Journal of Pathology 2012年第2期2卷 29-37页

作者： Mónica-Belinda Romero-Guadarrama Fiacro Jiménez Ponce Armando Medina Cruz Elsa Lorena Durán Ramírez Icela Palma Lara Molecular and Celular morphology Laboratory Escuela Superior de Medicina Instituto Politécnico Nacional and Morphology Department Facultad de Medicina Veterinaria y Zootecnia (UNAM) México City México Unidad de Patología del Hospital General de México Facultad de Medicina Universidad Nacional Autónoma de México (UNAM) México City México

Introduction: Diffuse large B-cell lymphoma (DLBCL), not otherwise specified, is a large B-cell lymphoma with a diffuse growth pattern and aggressive clinical course. It is divided in subgroups according to its morphology, immunophenotype, and primary site. Dissemination to bone marrow occurs in 11% to 35% of cases and can be of concordant or discordant morphology. Objective: To examine the association, the type of bone marrow involvement in relation to the primary site, morphology, immunohistochemistry of DLBCLs and to determine the cases of Epstein-Barr virus positive DLBCLs. Materials and Methods: We reviewed lymph node and extranodal biopsies as well as the respective bone marrow biopsies in all cases of DLBCL diagnosed in the Hospital General de México during the period from 2002 to 2010. We used immunohystochemistry for immunophenotype identification (Hans’s algorithm) and an in-situ hybridization technique to detect presence of Epstein Barr encoded RNA (EBER). Results: We included 108 patients with a mean age of 51.9 years, 59 (55%) were men. DLBCL involved lymph nodes in 60% of cases and palatine tonsils in 13%. The centroblastic variant predominated (80%) and 58% originated from activated B-cells. Infiltration of bone marrow was present in 30% of cases and was discordant in 55% of these cases. Correlation between morphology and bone marrow infiltration was statistically significant (P = 0.0003). Presence of Epstein-Barr virus was demonstrated in 15% of patients older than 50 years. Conclusions: Dissemination to bone marrow occurred in 30% of cases and discordant involvement was most common. DLBCL originating from activated B-lymphocytes predominated and the most common extranodal sites were palatine tonsils, suggesting that our population has a clinical behavior similar to Asiatic populations.

关键词： Dissemination to Bone Marrow Diffuse Large B-Cell Lymphoma Immunophenotype

Seed cracking, biting force and skull morphology in finches

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Seed cracking, biting force and skull morphology in finches

Artificial rearing influences the morphology,permeability and redox state of the gastrointestinal tract of low and normal birth weight piglets

23rd International Ornithological Congress

作者： Maria A.A.vanderMeij Ron G.Bout Univ. of Leiden Inst. of Evol. and Ecol. Sci. Evolutionary Morphology PO box 9516 2300 RA Leiden The Netherlands Univ. of Leiden Inst. of Evol. and Ecol. Sci. Evolutionary Morphology PO box 9516 2300 RA Leiden The Netherlands

＜正＞ According to molecular data, carduelines （Fringillidae） and estrildids （Passeridae） are two not directly related taxa. Both taxa crack and husk seeds before swallowing the kernel. Although this poses similar functional demands on the feeding apparatus these two subfamilies show differences in performance. Carduelines husk hard seeds faster than estrildids but do not differ in their performance on soft seeds. Our experiments show that

关键词： biting force skull morphology Fringillidae Passeridae

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Journal of Animal Science and Biotechnology 2017年第3期8卷 707-720页

作者： Hans Vergauwen Jeroen Degroote Sara Prims Wei Wang Erik Fransen Stefaan De Smet Christophe Casteleyn Steven Van Cruchten Joris Michiels Chris Van Ginneken Laboratory of Applied Veterinary morphology Department of Veterinary SciencesFaculty of BiomedicalPharmaceutical and Veterinary SciencesUniversity of AntwerpCampus Drie EikenUniversiteitsplein 1D.U0152610 WilrijkBelgium Department of Applied Biosciences Faculty of Bioscience EngineeringGhent UniversityGhentBelgium Laboratory for Animal Nutrition and Animal Product Quality(LANUPRO) Department of Animal ProductionFaculty of Bioscience EngineeringGhent UniversityMelleBelgium StatUa Center for Statistics University of AntwerpAntwerpBelgium

Background： In this study the physiological implications of artificial rearing were investigated. Low（LBW） and normal birth weight（NBW） piglets were compared as they might react differently to stressors caused by artificial rearing. In total, 42 pairs of LBW and NBW piglets from 16 litters suckled the sow until d19 of age or were artificially reared starting at d3 until d19 of age. Blood and tissue samples that were collected after euthanasia at 0, 3, 5, 8 and 19 d of age. Histology, ELISA, and Ussing chamber analysis were used to study proximal and distal small intestine histomorphology, proliferation, apoptosis, tight junction protein expression, and permeability. Furthermore, small intestine,liver and systemic redox parameters（GSH, GSSG, GSH-Px and MDA） were investigated using ***： LBW and NBW artificially reared piglets weighed respectively 40 and 33% more than LBW and NBW sowreared piglets at d19（P 〈 0.01）. Transferring piglets to a nursery at d3 resulted in villus atrophy, increased intestinal FD-4 and HRP permeability and elevated GSSG/GSH ratio in the distal small intestine at d5（P 〈 0.05）. GSH concentrations in the proximal small intestine remained stable, while they decreased in the liver（P 〈 0.05）. From d5 until d19, villus width and crypt depth increased, whereas PCNA, caspase-3, occludin and claudin-3 protein expressions were reduced. GSH,GSSG and permeability recovered in artificially reared piglets（P 〈 0.05）.Conclusion： The results suggest that artificial rearing altered the morphology, permeability and redox state without compromising piglet performance. The observed effects were not depending on birth weight.

关键词： Milk replacer Oxidative stress Small intestine Suckling period Tight junction proteins

VIRUSES OF CLASSICAL AND MILD FORMS OF HEMORRHAGIC FEVER WITH RENAL SYNDROME (HFRS) ISOLATED IN CHINA HAVING BUNYAVIRUSLIKE morphology

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Chinese Science Bulletin 1983年第4期28卷 561-563页

作者：洪涛夏诗茂宋干廖化新赵同兴周静仪杭长寿 Institute of Virology Chinese Academy of Medical Sciences Beijing Institute of Virology Chinese Academy of Medical Sciences Beijingemorrhagic fever with renal syndrome is a severe human illness which threatens a large portion of the world's population. However little if any is known about the morphology and especially about the morphogenesis of its causative virus.

Hemorrhagic fever with renal syndrome is a severe human illness, which threatens a large portion of the world’s population. However, little, if any, is known about the morphology and, especially, about the morphogene... 详细信息

关键词： illness portion granulo originally immature horse suggestion Serum irregular 二甲

Studies on the Crystallization Properties and morphology Structure of the Cationic Dyeable Polypropylene Fibers

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Journal of Donghua University(English Edition) 2004年第1期21卷 128-130页

作者：宓林坤陈国康 Plastics Division SINOPEC Shanghai Petrochemical Co. Ltd. Shanghai 200540 Plastics Division SINOPEC Shanghai Petrochemical Co. Ltd. Shanghai 200540he crystallization properties and morphology structure of the cationic dyeable polypropylene fibers which were produced by the blending spinning method were studied by making use of X-ray and scanning electron microscopy (SEM). It comes to the conclusions that the larger the crystallite size in the fibers is the better the dyeable properties of the fibers are and there is a little compatibility between the dyeable agent and polypropylene resin. And the dye-uptake of the fibers may be up to 90% because the dyeable agent can uniformly be scattered in polypropylene.

The crystallization properties and morphology structure of the cationic dyeable polypropylene fibers which were produced by the blending spinning method were studied by making use of X-ray and scanning electron microscopy (SEM). It comes to the conclusions that the larger the crystallite size in the fibers is , the better the dyeable properties of the fibers are and there is a little compatibility between the dyeable agent and polypropylene resin. And the dye-uptake of the fibers may be up to 90% because the dyeable agent can uniformly be scattered in polypropylene.

关键词： cationic dye polypropylene fiber crystallization property morphological structure

CYTOLOGICAL STUDIES ON Porphyra——morphology OF THE CHLOROPLAST IN THE Conehocelis PHASE

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Chinese Science Bulletin 1985年第3期30卷 408-411页

作者：曾呈奎孙爱淑 Institute of Oceanologyu Academia Sinica Qingdao Institute of Oceanologyu Academia Sinica Qingdaon the evolution of plants espeeially the algae the morphology of the chloroplasts has undergone a long process of evolution. The algal chloroplasts are of various forms which may be stellate cup-shaped reticulate ribbon-shaped or discoid. They also vary in number per cell from one or a 'few to numerous and in the position in the cells they

In the evolution of plants, espeeially the algae, the morphology of the chloroplasts has undergone a long process of evolution. The algal chloroplasts are of various forms, which may be stellate, cup-shaped, reticulate, ribbon-shaped or discoid. They also vary in number per cell, from one or a ’few to numerous, and in the position in the cells

关键词： Porphyra reticulate stellate ribbon shaped numerous algae algal elongated slender