Abiotic and biotic factors associated with the presence of Anopheles arabiensis immatures and their abundance in naturally occurring and man-made aquatic habitats.
Abiotic and biotic factors associated with the presence of Anopheles arabiensis immatures and their abundance in naturally occurring and man-made aquatic habitats.
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DOI：
10.1186/1756-3305-5-96
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发表时间：
2012-05-19
影响因子：
3.2
通讯作者：
Fontenille D
中科院分区：
文献类型：
--
作者：
Gouagna LC;Rakotondranary M;Boyer S;Lempérière G;Dehecq JS;Fontenille D
阿拉伯按蚊（双翅目：蚊科）是一种潜在的疟疾媒介，通常存在于留尼汪岛偏远地区的低海拔地区。很少有人注意到驱动幼虫发育的环境条件和潜在栖息地的丰度模式。两个实地调查的目的是确定是否因素，区分水生栖息地与无安。相对而言，在人造和自然生境中，阿拉伯斑潜蝇幼虫也是幼虫数量的主要来源。在最初的初步调查中，选择了一个有代表性的水生生境样本，将适合进行深入的长期研究，并根据是否存在阿拉伯按蚊幼虫分为阳性和阴性地点。随后，促使第二次调查，以更好地了解幼虫丰度的生物和非生物驱动因素，比较在两个研究地点的人造和自然发生的栖息地。在这两次调查中，每周进行一次采样，以记录个别生境中的蚊子物种组成和幼虫密度，以及原地的生物特征和物理化学特性。虽然几乎任何停滞的水体都可能是An的潜在滋生地。在无幼虫的生境中，幼螨所占据的生境具有不同的结构和生物学特征。幼虫的发生似乎是受流速，大型底栖动物多样性和捕食压力。有趣的是，人工栖息地中幼虫的相对丰度（平均：0.55幼虫/浸，95%CI [0.3-0.7]）显著低于自然发生的记录（0.74，95%CI [0.5-0.8]）。这种差异可能部分是由于与特定生境有关的不同压力。如果说安.一般来说，Arabiensis是非常复杂的，影响繁殖地生产力的因素有时不容易突出，我们的结果，然而，突出了较低的人口。与在非洲大陆进行的可比研究报告相比，阿拉伯未成熟。总体而言，幼虫丰度低是由非生物和生物因素造成的，这表明针对幼虫生境的病媒控制措施在留尼旺岛可能会取得成功，但如果考虑到环境的变异性，这些措施可能会得到更好的实施。
Anopheles arabiensis (Diptera: Culicidae) is a potential malaria vector commonly present at low altitudes in remote areas in Reunion Island. Little attention has been paid to the environmental conditions driving larval development and abundance patterns in potential habitats. Two field surveys were designed to determine whether factors that discriminate between aquatic habitats with and without An. arabiensis larvae also drive larval abundance, comparatively in man-made and naturally occurring habitats. In an initial preliminary survey, a representative sample of aquatic habitats that would be amenable to an intensive long-term study were selected and divided into positive and negative sites based on the presence or absence of Anopheles arabiensis larvae. Subsequently, a second survey was prompted to gain a better understanding of biotic and abiotic drivers of larval abundance, comparatively in man-made and naturally occurring habitats in the two studied locations. In both surveys, weekly sampling was performed to record mosquito species composition and larval density within individual habitats, as well as in situ biological characteristics and physico-chemical properties. Whilst virtually any stagnant water body could be a potential breeding ground for An. arabiensis, habitats occupied by their immatures had different structural and biological characteristics when compared to those where larvae were absent. Larval occurrence seemed to be influenced by flow velocity, macrofauna diversity and predation pressure. Interestingly, the relative abundance of larvae in man-made habitats (average: 0.55 larvae per dip, 95%CI [0.3–0.7]) was significantly lower than that recorded in naturally occurring ones (0.74, 95%CI [0.5–0.8]). Such differences may be accounted for in part by varying pressures that could be linked to a specific habitat. If the larval ecology of An. arabiensis is in general very complex and factors affecting breeding site productivity sometimes not easy to highlight, our results, however, highlight lower populations of An. arabiensis immatures compared to those reported in comparable studies conducted in the African continent. Overall, this low larval abundance, resulting from both abiotic and biotic factors, suggests that vector control measures targeting larval habitats are likely to be successful in Reunion, but these could be better implemented by taking environmental variability into account.
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影响因子：
3
作者：
Depinay, JMO;Mbogo, CM;McKenzie, FE
通讯作者：
McKenzie, FE
DOI：
10.1016/j.trstmh.2009.10.008
发表时间：
2010-04-01
影响因子：
2.2
作者：
D'Ortenzio, E.;Sissoko, D.;Filleul, L.
通讯作者：
Filleul, L.
DOI：
10.1080/00034983.1984.11811821
发表时间：
1984-01-01
影响因子：
--
作者：
MCCRAE, AWR
通讯作者：
MCCRAE, AWR
影响因子：
1.9
作者：
Koenraadt, CJM;Majambere, S;Takken, W
通讯作者：
Takken, W
DOI：
10.4269/ajtmh.2007.77.660
发表时间：
2007-10-01
影响因子：
3.3
作者：
Afrane, Yaw A.;Zhou, Goufa;Yan, Guiyun
通讯作者：
Yan, Guiyun