Breeding biology of the Marabou Stork (Leptoptilos crumeniferus) in Swaziland
Breeding biology of the Marabou Stork (Leptoptilos crumeniferus) in Swaziland
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斯威士兰鹳鹳 (Leptoptilos crumeniferus) 的繁殖生物学
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
A. Monadjem
中科院分区：
文献类型：
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作者：
A. Monadjem
在斯威士兰东北部的Hlane国家公园对鹳的繁殖生物学进行了研究。这个繁殖群体在1964年首次被记录。2003年至少有15对在那里繁殖。航空普查的数据表明，至少从1995年以来，同样大量的蚊子一直在那里繁殖。Marabous选择的筑巢地点在相对低冠的相思树和A。尼罗河，这是远离河流或死水。6月至9月间以双峰方式产卵。平均窝卵数为2.1枚，繁殖力（或生产力）为0.41只小鸡/对/年。从已知年龄的雏鸡中进行的测量允许计算生长率。如果没有其他人口的移民，斯威士兰的Marabou人口就无法维持自己。然而，由于在过去的三、四十年里，相对大量的对一直在持续和定期地繁殖，这个种群被视为具有区域保护意义。
The breeding biology of the Marabou Stork (Leptoptilos crumeniferus) was studied in Hlane National Park, north-eastern Swaziland. This breeding colony was first recorded in 1964. A minimum of 15 pairs bred there in 2003. Counts from aerial census suggest that equally large numbers have been breeding there since, at least, 1995. Marabous selected nesting sites in relatively low-crowned trees of Acacia tortilis and A. nilotica, which were situated well away from rivers or standing water. Eggs were laid bimodally between June and September. Mean clutch size was 2.1 eggs and fecundity (or productivity) was 0.41 chicks/pair/annum. Measurements taken from chicks of known age allowed for the calculation of growth rates. The Marabou population in Swaziland cannot sustain itself without immigration from other populations. However, due to the relatively large number of pairs that have bred continuously and regularly for the past three or four decades, this population is viewed as being of regional conservation significance.