紫蓬山区三种鹭繁殖生物学研究

作者报道了１９９６年４～７月紫蓬山区的池鹭,白鹭和夜鹭的繁殖行为和雏鸟的食性及生长,结果表明：巢前期三种鹭取食地点远离巢区;求偶方式主要有婚飞,显示饰羽,求偶喂食和象征性营巢行为;获得巢材的方式不同,异步产卵,异步孵化;雏出孵前,白鹭和夜鹭的迅速加固和扩大巢的行为,育雏期,取食大小随雏鸟日龄增大而增大,取食距离随雏期延长而缩短,三者雏鸟重增长的数学模型分别为：ｗ＝２０５．１ｅ＾－（０．０６５ｅ）＾     

牛背鹭种群扩张析

牛背鹭种群扩张析文祯中（河南省信阳师范学院生物系,４６４０００）ＰｏｐｕｌａｔｉｏｎＤｉｓｐｅｒｓｉｏｎｏｆＣａｔｔｌｅＥｇｒｅｔ．￥ＷｅｎＺｈｅｎｚｈｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＢｉｏｌｏｇｙ,ＸｉｎｙａｎｇＴｅａｃｈｅｒ’ｓ,Ｃｏｌｌｅｇｅ,...     

绿鹭的繁殖习性观察

2001年4－9月在合肥市对绿鹭（Butorides striatus)的繁殖习性进行了观察。绿鹭营巢生境主要选择在建筑物附近的高大阔叶树上,常一树一巢,未见与其他鹭类混群营巢。每巢产3－5枚卵,孵卵期21d,育雏期41d,42日龄后幼鸟离巢飞走,出飞存活率62．5％。育雏期雏鸟主要食物为小型鱼类。在4所大学校园及1处公园统计到有效巢56个,推算绿鹭224只。绿鹭在合肥繁殖属首次记录。     

汉中地区牛背鹭繁殖习性的观察

牛背鹭在汉中地区为夏候鸟,每年4月初,迁来繁殖地后,即成对活动,开始交配,交配时间,一般在上午9—10时,或下午5—6时,每次交配时间约20—23秒。4月中旬开始营巢,巢成浅盘状。产卵期在5月份,每窝产卵3—5枚,卵呈椭圆形,卵的量度为44.2×34.7毫米,重23.8克。孵化期平均24天,出雏率为80.7％。育雏由双亲共同承担,雏鸟所吃食物约30多种,主要为昆虫和鼠类。雏鸟的体重平均日增长为14.09克,体长平均日增长为13.07毫米,嘴峰平均日增长为1.36毫米,翼长平均日增长为9.01毫米,跗蹠日增长为2.92毫米。     

河北唐海湿地四种鹭的种群动态和繁殖空间生态位

2004年8月—2005年7月对河北唐海湿地夜鹭(Nycticoraxnycticorax)、白鹭(Egtettagarzetta)、池鹭(Ardeolabacchus)、大白鹭(Casmerodiusalbus)的种群动态和繁殖行为进行了观察,并对巢群关系进行了研究。统计了4种鹭垂直和水平巢位的巢密度,计算了不同种鹭巢的生态位重叠、生态位宽度值。结果4种鹭在唐海数量最多月份为4—9月,最大量达到了近5800只。共有Ⅰ、Ⅱ两个巢区,迁来Ⅱ区时间较Ⅰ区晚半个月左右。除池鹭外,3种鹭之间均有争巢现象,后期趋于稳定。迫于密度压力和竞争,部分白鹭和池鹭取食范围较广。除大白鹭外,其他3种鹭同种间均有混交现象。在混巢区,夜鹭迁来最早,数量最大,为优势种,多数占据中心区的顶巢;大白鹭数量最少,亦占据中心区的顶巢;白鹭迁来较晚,占据中位巢;池鹭迁来最晚,数量较白鹭少,多数在边缘区单独筑巢,少数在中心区占下位巢。白鹭巢的垂直生态位最宽;夜鹭巢的水平生态位最宽;池鹭巢的综合空间生态位最宽。池鹭和夜鹭巢位的空间格局最为相似,池鹭和白鹭的生态位重叠较大。夜鹭的数量最多、大白鹭的个体最大,导致其处于优势;白鹭和池鹭数量少、个体小,导致其处于劣势。唐海湿地内丰富的食物和适宜的林带是鹭鸟密度较大的主要原因。此外,鹭类只筑巢在散布的、双行杨树林带均高为22m以上区域,是该地鹭类巢区的主要特点。     

太原市南郊区灰椋鸟的种群密度与繁殖观察

1987—1989年在太原市南郊区,灰椋鸟(Sturnuscineraceus)种群密度在繁殖前为5.34只/公顷,繁殖后为17.11只/公顷,鸟巢密度为0.7只/公顷。4月中旬产卵,窝卵数4—9枚,孵卵期13—15天,巢内育雏期13—14天,巢外5—7天。     

白琵鹭繁殖及雏鸟发育的观察

白琵鹭的繁殖习性,雏鸟生长等生态特征的变化。结果表明平均窝卵数３８±１２枚,平均卵重８５５±９３ｇ;雏鸟生长模型为Ｗｔ＝２０３１５／１＋ｅ２７８－０１９ｔ。     

广西防城7种鹭类混群繁殖的空间生态位研究

2002年3~8月对广西防城万鹤山营巢的鹭类繁殖种群进行了调查研究,结果表明:万鹤山栖息有大白鹭(Egretta alba)、中白鹭(Egretta intermedia)、白鹭(Egretta garzetta)、黄嘴白鹭(Egretta eulophotes)、牛背鹭(Bubulcus ibis)、池鹭(Ardeda bacchus)、夜鹭(Nycticorax nycticorax)7种鹭类种群。除黄嘴白鹭为均匀分布之外,其他6种均为成群分布。鹭类在万鹤山上营巢繁殖具有明显的水平分布和垂直分布现象。对影响鹭类混群繁殖时空间分布的因素及各种群间的相互关系进行了探讨。     

新疆南部地区黑鹳种群密度及其繁殖

黑鹳（Ciconia nigra）为国家Ⅰ级保护动物。国内主要繁殖地见于山西（刘焕金等,1985,1990;苏化龙等,1989）、陕西（禹瀚,1963）、吉林（张兴录,1983）、新疆（魏顺德等,1990;马鸣等,1991） 等省区。笔者自1985-1989年多次前往新疆南部对黑鹳的分布及数量进行了调查,1989-1992年又在塔里木河流域的沙雅县帕满水库（41°00′N,83°10′E）定点观察黑鹳的集群和繁殖生态。发现了目前国内最大的黑鹳群栖地和重要的繁殖种群。     

鄱阳湖保护区白琵鹭越冬种群分布

2007年10月至2010年3月3个冬季的调查显示,鄱阳湖国家级自然保护区白琵鹭(Platakakucorodia)种群数量在12月或1月达到峰值,3个越冬期最大种群数量分别为4 757只、10 385只和7 268只.大湖池、沙湖、常湖池是白琵鹭主要的栖息地,每个越冬期在这3个湖泊栖息的白琵鹭种群数量占保护区总数量的...     

紫蓬山区三种鹭雏鸟的食物多样性比较

池鹭(Ａｒｄｅｏｌａｂａｃｃｈｕｓ)、白鹭(Ｅｇｒｅｔｔａｇａｒｚｅｔｔａ)和夜鹭(Ｎｙｃｔｉｃｏｒａｘｎｙｃｔｉｃｏｒａｘ)4～7月在紫蓬山区国家级森林公园集群繁殖[7]。有关三者的繁殖生态报道较多[6,10～12,23],但甚少较系统的研究雏鸟的食性,尚缺乏通过食性研究进行鹭类资源管理和生物多样性保护方面的探讨。笔者1996年4～7月在紫蓬山区国家级森林公园的圆通山对池鹭、白鹭和夜鹭雏鸟的食性进行了观察,整理报道如下。1　工作方法收集称量雏鸟吐出的食物[13],或逆向挤压嗉囊使其吐出食物,统计食物的种类、数量。食物量百分比、食物…     

Breeding biology of the citrine wagtail (Motacilla citreola) in the Gdansk region (N Poland)

In the years 1997–2001, I observed 28 broods of the Citrine Wagtail (Motacilla citreola) in the Gulf of Gdask region. First birds arrived at the study area at the end of April. A successful breeding cycle lasted about 1 month and included: 3–4 days of nest building, 1–2 days of a break, 4–6 days of egg laying, 11–12 days of incubation, and 10–13 days of parental care of chicks in the nest. Females started to lay eggs at the beginning of May. The most common clutch-size was 5 eggs. Hatching success was 55.3%. On average, 2.6 chicks hatched in a nest, the final fledging success reached 38.1% and an average 1.8 chicks left the nest. Nests were always on the ground and were situated in tufts or in thick vegetation. Most entrances faced south-east. The mean external diameter of nests was 10.1 cm, the internal diameter, presented as width and length, averaged 6.3 and 6.8 cm, respectively, and the mean depth of cup was 3.9 cm. Eighty-six measured eggs were similar in shape and colour to the eggs of Yellow Wagtail (M. flava). Their mean width was 14.16 mm, and the length 18.40 mm. The growth and plumage development of nestlings is reported. To estimate the nestlings age a multiple regression equation was established with the measurements of highest correlation coefficients, i.e. wing and tarsus length: D=0.12W+0.23T–0.23 (where: D = day of life, W = wing length, T = tarsus length). In the observed nest, both parents participated similarly in feeding the chicks. The average frequency of feeding increased from about 5 per hour on the day of hatching to more than 20 per hour in the last days in the nest. G-test showed statistically significant differences between the male and the female in the distribution of average duration of visit (G=52.3, df=10, P<0.05). During the first few days the female stayed at the nest longer than the male. After 6 days, average duration of a visit in the nest for both parents shortened to several seconds.     

台湾中部暗绿绣眼鸟的繁殖生物学

本研究将暗绿绣眼鸟 (Zosteropsjaponicasimplex)捕捉、套彩色环后释放 ,分别于 1999年和 2 0 0 1年 3～ 8月追踪监测 7对和 13对暗绿绣眼鸟的繁殖行为。总结此二年对 2 0对暗绿绣眼鸟的监测 ,其繁殖期始于 3月中旬 ,终止于 8月下旬。 1对最多可年产 5窝 ,但以 3～ 4窝为常见。初次筑巢所需时间平均为 10 4d ,筑第 2、3巢的时间依次减少 ;窝与窝之间的繁殖间隔视情况而定 ,如孵化或喂养失败 ,通常都在 1～ 2d内再筑巢 ,如繁殖育雏成功 ,平均相隔 7d再筑巢。 2年 6 3窝的窝卵数平均为 2 6 8± 0 71(n =6 3)枚 ;孵化期平均为 11±0 6 4 (n =4 7)d ;6 3窝孵化成功 4 7窝 ,孵化成功率为 74 6 % ;雏鸟离巢日龄平均为 10 5± 0 88(n =35 )d ;4 7窝雏鸟喂养成功 35窝 ,育雏成功率为 74 5 % ;6 3窝繁殖成功 35窝 ,繁殖成功率为 5 5 5 %。失败因素包括气候、动物掠食、人为破坏和其它不明原因     

Breeding success and lutein availability in great tit (Parus major)

The relationship among temporal variation in the availability of carotenoid-rich food, tissue carotenoid levels and breeding success are poorly known. We studied how diet quality and quantity affect the carotenoid profile and fledging success of great tit (Parus major) nestlings along a pollution gradient. We found declining seasonal trend in lutein concentration of caterpillars, which may be the explanation for the declining trend in nestlings' lutein concentration of plasma with season, despite the increase in caterpillar biomass. This may be because the biomass of most lutein-rich caterpillars (autumnal moths) decreased and less lutein-rich caterpillars (sawflies) increased during the breeding season. The temporal difference in occurrence of different caterpillar species means that peak lutein availability does not coincide with peak caterpillar abundance. However the positive association between total larval biomass and the number of great tit fledglings may suggest that fledging success depends more on total caterpillar availability than on lutein concentration of caterpillars.     

斑背大尾莺sinensis亚种的繁殖生物学

斑背大尾莺（Megalurus pryeri）为东亚特有鸟类,数量稀少（常家传,1995;马敬能等,2000）,2003年IUCN世界濒危物种红皮书将斑背大尾莺列为易危物种（汪松、解焱,2004）。斑背大尾莺有2个亚种,指名亚种（M．P．pryeri）仅在日本本州岛北部的Kanto平原北部繁殖,越冬区在本州岛中部的太平洋沿岸（Fujitaand Nagata,1997）;sinensis亚种在我国仅见于湖北汉口（冬候鸟）、河北秦皇岛（旅鸟）和辽宁朝阳地区（繁殖鸟？）（郑作新,1987）。     

Breeding biology aspects of spotted flapshell Turtle,Lissemys punctata (Lacepede 1788), in Bangladesh

This study was conducted to determine the breeding season, gonadal development, egg laying period, clutch size and other biological aspects of spotted flapshell turtle, Lissemys punctata, of Bangladesh between January 1997 and December 2001. The egg laying period of L. punctata, was found between August and March. The nesting sites were elevated fallow lands in secluded areas. The female turtle laid all the mature eggs at a time for each clutch at night. A gravid female turtle laid three clutches of eggs in each year and the mean clutch size was 13.0 ± 1.9 eggs and mean weight of each egg was 10.3 ± 1.3 g. The eggs are spherical in shape and whitish in color. The mean incubation period was 173 ± 34 days (range 119–225 days). The incubation period of first clutch was the longest than the second and third clutches. Hatching success was found 41%. Maximum hatching was observed in June. The present investigation was made to explore the possibility to raise turtle farming in captive condition. The findings would, hopefully, help to rear the species and to assess the commercial potentiality of turtle farming in captive condition, that is, in the eco-climatic condition of Bangladesh.     

两种生境对四川黄龙沟少花鹤顶兰有性繁殖成功的影响

四川黄龙沟森林和钙化滩流地两种生境中分布着大量的少花鹤顶兰,而且生长在这两种生境中的少花鹤顶兰有性繁殖成功存在着差异,目前尚不清楚这种差异是否是由生境差异所致,及其影响有性繁殖成功的机制。通过对黄龙沟少花鹤顶兰两种生境主要环境因子的调查和两种生境中的花部特征和传粉情况的测量,结果表明森林生境中林木盖度、土壤厚度、土壤含水量、土壤有机质、土壤全氮以及空气相对湿度比钙化滩流地中的高,而灌木盖度、草本盖度、苔藓盖度、空气温度、相对光照强度、土壤温度、全钙以及pH则是钙化滩流地中更高。而两种生境中少花鹤顶兰的形态特征和有性繁殖成功之间也存在明显的差异。在森林生境中的个体与钙化滩流地中的个体相比,最大叶长和最大叶宽更大,花朵数更多,距长也更长,单花和花序寿命更长。但花粉移走率和结实率却是钙化滩流地中的更高。两种生境中温度和光照的差异可能是导致两种生境中少花鹤顶兰花粉移走率和结实率差异的重要原因。     

Breeding Systems in American and Asian Trillium Species by Means of Chromosome Analyses

Abstract Species of Trillium have a disjunct distribution occurring in both North America and eastern Asia. In North America all 36 species are diploid. The 11 species of eastern Asia, however, include only a single diploid with all the other species being polyploids. Why do different patterns of speciation develop in North America and in eastern Asia? The breeding systems of populations in the North American T. erectum, T. grandiflorum and T. ovatum , and in Asian T. kamtschaticum were investigated by estimating the inbreeding coefficient from cold-induced banding patterns which reveal homozygotes and heterozygotes. From the analyses of the inbreeding coefficients, T. erectum, T. grandiflorum and the Pacific coastal species, T. ovatum are predominantly inbreeding species. T. ovatum populations from the Rocky Mountain region are outbreeders. However the Japanese species, T. kamtschaticum has a mixture of outbreeding and inbreeding among populations. The development of polyploid systems in Asia is possibly the result of the diversity of the breeding systems among the populations. The shift from outbreeding to inbreeding appears to be an important key step in the occurrence of poliploids by hybridization between the different species.     

Pattern of Resource Allocation of Six Plantago Species with Different Breeding Systems

Plantago exhibit great deal of differences in the breeding system. The reproductive effort calculated on the basis of, (i) dry biomass of foliar and floral parts and (ii) seed output-weight (mg) per unit leaf area (cm²), exhibits relation with breeding system. The predominantly inbreeding taxa invest higher reproductive effort compared to their outbreeding allies. In terms of sex allocation strategies, the outbreeding species like P. lanceolata, P. lagopus invest more to the development of floral features and to male functions. On the contrary, inbreeding species such as P. patagonica, P. drummondii, and P. ovata invest greater resources to the female function. Received 13 April 1998/ Accepted in revised form 6 November 1998