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RD Hodgkiss A Grant JHR McClelland R Quatre B Rademakers C Sanchez 《African Journal of Marine Science》2017,39(2):225-232
This study produced the first data on population parameters for sicklefin lemon shark Negaprion acutidens at the granitic Seychelles Islands, adding to a limited catalogue of species information. Juveniles at a site in the Curieuse Marine National Park were tagged over two periods, in 2014–2015 and 2015–2016, with measurements of length (precaudal, fork and total) and weight, sex, and state of the umbilical opening recorded. Recapture data were used to calculate growth rates and population size. Mean annual growth rate was 5.40 cm y–1. A mean size at birth of 62.5 cm TL is in line with previous assessments of the species. Population-size estimates were similar for the two sampling periods (comprising 311 and 255 individuals) and higher than anticipated. Movements to outside the lagoon were recorded for early ages, and this, combined with weight loss and a reduction in condition factor as displayed in several individuals, suggests that the study area alone could not support the large number of sharks pupped yearly. 相似文献
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目的：探讨CT检查对新生儿缺氧缺血性脑病（HIE）的临床价值。资料与方法：对45例新生儿缺氧缺血性脑病（HIE）的临床资料、CT表现进行回顾分析,所有患儿均在24h～72h内行颅脑CT扫描证实。结果：HIE据CT表现分为轻、中、重度（轻度10例,中度20例,重度15例,男26例,女19例）。结论：CT检查可对新生儿缺氧... 相似文献
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新生儿缺氧缺血性脑病临床分度和CT表现的对照研讨 总被引：1，自引：0，他引：1
目的：探讨新生儿缺氧缺血性脑病（HIE）临床CT表现和分度的关系。方法：对85例缺氧缺血性脑病新生儿的临床资料及CT征象进行回顾性分析。结果：根据HIE的临床诊断标准,轻度26例,中度38例,重度21例。颅脑CT显示全部85例均具有脑内异常密度减低区,CT值约6～18Hu（平均11Hu）;合并颅内高密出血（52例）,CT值约58～85Hu。依据新生儿缺氧缺血性脑病的CT诊断标准：轻度26例,中度38例及重度21例。48例进行了CT复查。其中19例轻度患儿脑水肿均在11天内消失而恢复正常;12例中度病例中,脑水肿征象有不同程度的减轻或消失,蛛网膜下腔出血已吸收,1例出现硬膜下少量积液;17例重度患者,其中出现脑软化6例,硬膜下积液3例,脑萎缩3例,脑积水2例,脑内钙化灶2例,脑穿通畸形1例,死亡4例。结论：本组资料新生儿缺氧缺血性脑病临床诊断分度与CT诊断分度有着很好的一致性。颅脑CT能准确显示HIE患儿脑内病变的部位、范围和程度。CT复查能显示患儿脑内病灶的恢复及遗留病变。颅脑CT表现结合临床分度能对本病的进行早诊断、早干预,减少脑损伤后遗症的发生,有着极其重要的价值。 相似文献
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