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61.
Summary A girl with partial deletion of the short arms of one chromosome 7 is described. Among many other symptoms she has craniosynostosis. Early closure of cranio-sutures has previously been described in 2 of 3 patients with partial deletion 7. Investigation of a number of genetic marker systems shows that the HL-A, MN, AcP, and GPT loci are not located in the deleted segment.
Zusammenfassung Es wird ein Mädchen mit teilweiser Deletion des kurzen Armes eines Chromosoms 7 beschrieben. Außer vielen anderen Symptomen hat sie eine Craniosynostose. Frühzeitiger Verschluß der Schädelnähte wurde auch bei 2 von 3 Patienten mit Deletion 7, die in der Literatur beschrieben sind, beobachtet. Untersuchung einer Reihe genetischer Markersysteme zeigt, daß die HL-A-, MN-, AcP- und GPT-loci nicht in dem deletierten Segment liegen.相似文献
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A reconstruction is presented of the phylogenetic relationships withing Triturus . Two different data sets are used. Protein electrophoretic data were scored for 19 presumptive gene loci in nine species (Rafinski & Arntzen, 1987) and a set of 16 behaviour characters from the courtship of Triturus was scored for the same nine species. When these are analysed in concernt, a single, fully resolved and robust solution is found. Consequently, two subgenera are recognized: Triturus and Palaeotriton , the former including all te medium- and large-bodied species: T. alpestris, T. vittatus, T. marmoratus, T. cristatus and its three former subspecies ( T. carnifex, T. dobrogicus and T. Karelini ); the latter comprising the small-bodied species: T. bascai, T. italicus, T. helveticus, T. vulgaris and T. montandoni . Within the subgenus Triturus, T. alpestris and T. vittatus are sister taxa to the remaining members of the subgenus. Similarly, T. boscai and T. italicus are a monophyletic group, sister to T. vulgaris, T. helveticus and T. montandoni . Alternative solutions may be found on the basis of a quantitative analysis of the behavioural characters employed in this study. An alternative phylogenetic tree is included as an example. 相似文献
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Lapeña David Olsen Pernille M. Arntzen Magnus Ø. Kosa Gergely Passoth Volkmar Eijsink Vincent G. H. Horn Svein J. 《Bioprocess and biosystems engineering》2020,43(4):723-736
Bioprocess and Biosystems Engineering - The production of microbial protein in the form of yeast grown on lignocellulosic sugars and nitrogen-rich industrial residues is an attractive approach for... 相似文献
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Linda K. Petersson Daniel C. Dey Annika M. Felton Emile S. Gardiner Magnus Lf 《Ecology and evolution》2020,10(5):2626-2637
Failed oak regeneration is widely reported in temperate forests and has been linked in part to changed disturbance regimes and land‐use. We investigated if the North American fire–oak hypothesis could be applicable to temperate European oaks (Quercus robur, Quercus petraea) using a replicated field experiment with contrasting canopy openness, protection against ungulate browsing (fencing/no fencing), and low‐intensity surface fire (burn/no burn). Survival, relative height growth (RGRH), browsing damage on naturally regenerated oaks (≤300 cm tall), and changes in competing woody vegetation were monitored over three years. Greater light availability in canopy gaps increased oak RGRH (p = .034) and tended to increase survival (p = .092). There was also a trend that protection from browsing positively affected RGRH (p = .058) and survival (p = .059). Burning reduced survival (p < .001), nonetheless, survival rates were relatively high across treatment combinations at the end of the experiment (54%–92%). Most oaks receiving fire were top‐killed and survived by producing new sprouts; therefore, RGRH in burned plots became strongly negative the first year. Thereafter, RGRH was greater in burned plots (p = .002). Burning altered the patterns of ungulate browsing frequency on oaks. Overall, browsing frequency was greater during winter; however, in recently burned plots summer browsing was prominent. Burning did not change relative density of oaks, but it had a clear effect on competing woody vegetation as it reduced the number of individuals (p < .001) and their heights (p < .001). Our results suggest that young, temperate European oaks may respond similarly to fire as their North American congeners. However, disturbance from a single low‐intensity fire may not be sufficient to ensure a persistent competitive advantage—multiple fires and canopy thinning to increase light availability may be needed. Further research investigating long‐term fire effects on oaks of various ages, species‐specific response of competitors and implications for biodiversity conservation is needed. 相似文献
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Persson Joel Ford Scott Keophoxay Anousith Mertz Ole Nielsen Jonas Østergaard Vongvisouk Thoumthone Zörner Michael 《Human ecology: an interdisciplinary journal》2021,49(5):597-616
Human Ecology - Despite the popularity of integrated conservation and development approaches to protected area management, adjacent communities increasingly face livelihood dilemmas. Yet... 相似文献
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In southern Brazil, we investigated shark and ray capture records in an integral protection marine protection area (MPA) that allows fishing in that area. We found 10 shark and nine ray species, of which 88.5% and 66.2%, respectively, are endangered. Female adults and neonates of both sexes are abundant in the area, with records of stranding of large specimens, postcapture abortions and ovigerous capsules with fresh embryos on the beach. We suggest the application of continuous fisheries monitoring and an increase in guidelines on the capture of endangered species. 相似文献