Mostrando 3,021 - 3,040 Resultados de 3,549 Para Buscar '"amphibian"', tiempo de consulta: 0.22s Limitar resultados
  1. 3021
    “…Therefore, we hypothesized that bufadienolide synthesis may be stimulated by elevated levels of corticosterone (CORT), the main glucocorticoid hormone of amphibians, or by upstream regulators that stimulate CORT production. …”
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  2. 3022
    “…METHODS: For this systematic review, the search for articles by keywords took place in the databases “Science Direct,” Scopus,” “SciELo” and “Web of Science,” associating the term “taboo” with the taxa “amphibians,” “birds,” “mammals,” “fish” and “reptiles.” …”
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  3. 3023
    “…In mouse (Mus musculus) and Japanese quail (Coturnix japonica) embryos, the coronary arteries unique to amniotes are established by the reconstitution of transient vascular plexuses: aortic subepicardial vessels (ASVs) in the outflow tract and the primitive coronary plexus on the ventricle. In contrast, amphibians (Hyla japonica, Lithobates catesbeianus, Xenopus laevis, and Cynops pyrrhogaster) retain the ASV-like vasculature as truncal coronary arteries throughout their lives and have no primitive coronary plexus. …”
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  4. 3024
    “…These results suggest that the lung area can be activated to produce rhythmic respiratory-related motor output in a reduced brainstem section and provide new insights into respiratory rhythm generation in adult amphibians. First, clustering breaths into episodes can occur within the rhythm-generating network without long-range input from structures such as the pons. …”
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  5. 3025
  6. 3026
    “…This use has affected aquatic ecosystems, causing malformations in amphibians. The Savannah frog (D. molitor) is a tropical frog inhabiting the mountain of Colombia. …”
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  7. 3027
    por Cox, Caroline, Surgan, Michael
    Publicado 2006
    “…Inert ingredients can increase the phytotoxicity of pesticide formulations as well as the toxicity to fish, amphibians, and microorganisms. CONCLUSIONS: Pesticide registration should require full assessment of formulations. …”
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  8. 3028
    “…While mammals, birds, and amphibians increase cardiac output through large increases in heart rate and only modest increases (∼30%) in stroke volume, fish and some reptiles use modest increases in heart rate and very large increases in stroke volume (up to 300%). …”
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  9. 3029
    “…RESULTS: Across mammals, avians, and amphibians, the TAAR1 gene is intact and appears to be under strong purifying selection based on rates of amino acid fixation compared to neutral mutations. …”
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  10. 3030
    “…By contrast, teleost fish and urodele amphibians are capable of heart regeneration after a partial amputation. …”
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  11. 3031
    “…In some species, such as amphibians and fish, their eyes are capable of regeneration after injury(5), however; the mammalian eye shows no such regenerative properties. …”
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  12. 3032
    “…Because some sex chromosomes in amphibians and arthropods are thought to be derived from B chromosomes, the B chromosomes in Lake Victoria cichlids may represent an evolutionary transition toward the generation of sex chromosomes.…”
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  13. 3033
    “…This view is supported by the estimated number of OR genes in the Burmese python's draft genome (∼280), although squamates may generally have fewer OR genes than terrestrial mammals and amphibians. The OR gene repertoire of the python seems unique in that many class I OR genes are retained. …”
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  14. 3034
    “…Previous research has shown that the geographical distribution patterns of freshwater fishes and amphibians have been influenced by past climatic oscillations in China resulting from Pleistocene glacial activity. …”
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  15. 3035
    “…DESIGN: Observational study of visitor behaviour at stalls that displayed and sold animals, mainly amphibians and reptiles, to assess potential contamination risk from zoonotic pathogens. …”
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  16. 3036
    “…This may indicate alternative migratory strategies, resembling the seasonal partial migrations seen in birds, fishes and amphibians, where only a subset of the population migrates. …”
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  17. 3037
  18. 3038
    por Bain, Odile, Junker, Kerstin
    Publicado 2013
    “…It was noted that, irrespective of their geographic origin, species from mammals share certain characters (shorter left spicule and absence of precloacal papillae) that oppose them to those from amphibians and reptiles. A hypothesis for the origin of Trichospirura in mammals through a remote host-switching event in tupaiids in southern Asia, likely facilitated by the intermediate hosts, and for their subsequent migration to the Ethiopian and finally Neotropical Realm is proposed. …”
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  19. 3039
    por Takahashi, Akiyoshi, Mizusawa, Kanta
    Publicado 2013
    “…In addition, over the last decade, much information has been obtained about the posttranslational processing of POMC in non-mammalian animals such as fish, amphibians, reptiles, and birds through sequencing and peptide identification by mass spectrometry. …”
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  20. 3040
    “…Amphibians are experiencing a precipitous global decline, and population stability on public lands with multiple uses is a key concern for managers. …”
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