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Population Dynamics and Breeding Space Niche of Four Heron Species in Tanghai Wetlands 被引量:5
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作者 李巨勇 李素萍 +2 位作者 孙砚峰 吴跃峰 武明录 《Zoological Research》 CAS CSCD 北大核心 2006年第4期351-356,共6页
The population dynamics and breeding behaviors of Black-crowned Night Herons ( Nycticorax nycticorax ), Egrets (Egtetta garzetta), Chinese Pond Herons (Ardeola bacchus) and Great Egrets (Casmerodius albus) wer... The population dynamics and breeding behaviors of Black-crowned Night Herons ( Nycticorax nycticorax ), Egrets (Egtetta garzetta), Chinese Pond Herons (Ardeola bacchus) and Great Egrets (Casmerodius albus) were observed in Tanghai Wetlands, Hebei Province from August 2004 to July 2005. Further, we studied the relationship of nest space distribution and directly calculated the nest density of vertical and horizontal levels, the niche overlapping index and the niche breadth. The results showed that there were two breeding areas, named Area Ⅰ and Area Ⅱ . The maximum population occurred in the period from April to September and was approximately 5800 individuals. Area Ⅰ was occupied earlier than Area Ⅱ by approximately half a month. In the breeding period, Black-crowned Night Herons were dominant in numbers and most occupied the upper nests of the core areas. Great Egrets also took the upper nests but they have the smallest population. Most Egrets took the middle nests of the edges of the area. Chinese Pond Herons, with a smaller population than the Egret, mostly nested in the edges, but some of them also took the lower nests of the core area. On the whole, the vertical niche of Egrets is the widest, the horizontal niche of Black-crowned Night Herons is the widest and the niche breadth of Chinese Pond Herons is the largest. The nest distribution pattern is the most similar between Chinese Pond Herons and Black-crowned Night Herons, and the niche overlapping index of Chinese Pond Herons and Egrets is the largest. Black-crowned Night Herons and Great Egrets control Egrets and Chinese Pond Herons in competition. Rich food and the optimal ecological environments lead to plenty of herons in the wetlands. In addition, it is a distinguishing feature of the four species that nests are built in poplar trees over 22 m tall. 展开更多
关键词 Tanghai Wetlands breeding herons population dynamics Nest areas Spatial niche
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Effects of breeding success,age and sex on breeding dispersal of a reintroduced population of the Crested Ibis(Nipponia nippon)in Ningshan County,China 被引量:4
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作者 Rong Dong Xinping Ye +4 位作者 Lin Zhong Xia Li Min Li Huaqiang Wang Xiaoping Yu 《Avian Research》 CSCD 2018年第4期314-320,共7页
Background: Breeding dispersal is an important ecological process that affects species' population dynamics and colonization of new suitable areas. Knowledge of the causes and consequences of breeding dispersal is... Background: Breeding dispersal is an important ecological process that affects species' population dynamics and colonization of new suitable areas. Knowledge of the causes and consequences of breeding dispersal is fundamental to our understanding of avian ecology and evolution. Although breeding success for a wild and reintroduced population of the Crested Ibis(Nipponia nippon) has been reported, the relationships between individuals' breeding dispersal and their breeding success, age and sex remain unclear.Methods: Ibises' breeding dispersal distance, which is the distance moved by adults between sites of reproduction, was estimated based on the observations of consecutive breeding sites of marked ibis individuals. From observational and capture-recapture data(n as = 102) over 9 years, individuals' breeding dispersal probability in relation to age, sex, and reproductive success wanalyzed via a generalized linear mixed effect modeling approach.Results: Our results show that 55% males and 51% females keep their previous territories following nesting success. Failed breeding attempts increased dispersal probabilities. Both females and males failed in breeding were more likely to disperse with greater distances than successful birds(females: 825 ± 216 m vs 196 ± 101 m, males: 372 Crested Ibis exhibited a female-biased dispersal pattern that the mean dispersal distance± 164 m vs 210 ± 127 m). of females(435 ± 234 m) was much larger than that of males(294 ± 172 m).Conclusion: Our results are fundamental to predict the patterns of breeding dispersal related to reproductive success under different release sites. From the conservation point of view, landscape connectivity between the reintroduced populations should be taken into account in accordance with the distance of breeding dispersal. 展开更多
关键词 breeding dispersal breeding success Generalized linear mixed effect model Crested IBIS Reintroduced population
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Integrative demographic study of the Iberian painted frog(Discoglossus galganoi):inter-annual variation in the effective to census population size ratio,with insights on mating system and breeding success
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作者 Óscar OLARTE Gregorio SÁNCHEZ-MONTES Íñigo MARTÍNEZ-SOLANO 《Integrative Zoology》 SCIE CSCD 2020年第6期498-510,共13页
In the face of worldwide amphibian declines,integrative studies combining individual-based information and genetic data represent a powerful approach to produce robust,reliable,and comparable assessments of demographi... In the face of worldwide amphibian declines,integrative studies combining individual-based information and genetic data represent a powerful approach to produce robust,reliable,and comparable assessments of demographic dynamics.The Iberian painted frog(Discoglossus galganoi)is endemic to Spain and Portugal and shows decreasing population trends across its range,but few studies have attempted to estimate census sizes or assess genetic diversity in wild populations,and little is known about their reproductive biology.We applied an integrative approach based on the combination of capture-mark-recapture data and multilocus genotypes to monitor a breeding population of D.galganoi in central Spain during two consecutive breeding seasons,focusing on the estimation of demographic parameters and their temporal variation.Specifically,we estimated the number of adults(Na),the effective population size(Ne),and the effective number of breeders(Nb),as well as survival and migration rates.We documented a>50%decrease in the estimated number of adults of both sexes between the breeding seasons of 2018 and 2019,probably associated with reduced rainfall in the latter.Estimates of Nb and the Nb/Na ratio were low in both seasons,with a 20–30%decrease in Nb and a 47%increase in the Nb/Na ratio in 2019.Based on the reconstruction of pedigrees from larval and adult genotypes,we provide the first genetic evidence of polygamy in males and females of D.galganoi and the first estimates of breeding success in the species. 展开更多
关键词 AMPHIBIANS breeding success DEMOGRAPHY effective population size genetic diversity POLYGAMY
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Long-term trends in the abundance and breeding performance in Adélie penguins:the Argentine Ecosystem Monitoring Program
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作者 Mariana A.JUÁRES AnahíM.SILVESTRO +1 位作者 Brenda C.ALFONSO M.Mercedes SANTOS 《Advances in Polar Science》 CSCD 2024年第1期132-140,共9页
In this work,we report long-term trends in the abundance and breeding performance of Adélie penguins(Pygoscelis adeliae)nesting in three Antarctic colonies(i.e.,at Martin Point,South Orkneys Islands;Stranger Poin... In this work,we report long-term trends in the abundance and breeding performance of Adélie penguins(Pygoscelis adeliae)nesting in three Antarctic colonies(i.e.,at Martin Point,South Orkneys Islands;Stranger Point/Cabo Funes,South Shetland Islands;and Esperanza/Hope Bay in the Antarctic Peninsula)from 1995/96 to 2022/23.Using yearly count data of breeding groups selected,we observed a decline in the number of breeding pairs and chicks in crèche at all colonies studied.However,the magnitude of change was higher at Stranger Point than that in the remaining colonies.Moreover,the index of breeding success,which was calculated as the ratio of chicks in crèche to breeding pairs,exhibited no apparent trend throughout the study period.However,it displayed greater variability at Martin Point compared to the other two colonies under investigation.Although the number of chicks in crèche of Adélie penguins showed a declining pattern,the average breeding performance was similar to that reported in gentoo penguin colonies,specifically,those undergoing a population increase(even in sympatric colonies facing similar local conditions).Consequently,it is plausible to assume a reduction of the over-winter survival as a likely cause of the declining trend observed,at least in the Stranger Point and Esperanza colonies.However,we cannot rule out local effects during the breeding season affecting the Adélie population of Martin Point. 展开更多
关键词 long-term monitoring Adélie penguin breeding pairs chicks crèched breeding success population trends
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人工扩繁管氏肿腿蜂的蜂种复壮研究 被引量:14
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作者 代平礼 徐志强 《昆虫知识》 CSCD 北大核心 2007年第3期402-405,共4页
利用中间寄主黄粉甲Tenebrio molitor L.蛹大量扩繁管氏肿腿蜂Scleroderma guani Xiao et Wu经多代后寄生效果下降,系由蜂种退化所致:利用一种中间寄主导致蜂种的营养来源单一;采用同一种群的蜂及较低的蜂虫比造成近亲繁殖。据此设计... 利用中间寄主黄粉甲Tenebrio molitor L.蛹大量扩繁管氏肿腿蜂Scleroderma guani Xiao et Wu经多代后寄生效果下降,系由蜂种退化所致:利用一种中间寄主导致蜂种的营养来源单一;采用同一种群的蜂及较低的蜂虫比造成近亲繁殖。据此设计复壮措施:利用自然寄主回接、杂交和控制交尾方式。结果表明:(1)回接1代,其子代蜂种的寄生率和寄生成功率分别提高26%和28%-33%。(2)用外缘蜂种与本群蜂种杂交,其子代蜂的发育历期比对照少4d,寄生率和寄生成功率分别提高22%和17%。(3)控制交尾方式促进蜂种复壮。 展开更多
关键词 管氏肿腿蜂 复壮措施 寄生成功率 繁育效果
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紫蓬山区三种鹭种群繁殖成效的研究 被引量:2
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作者 周立志 宋榆钧 《生物学杂志》 CAS CSCD 1999年第3期21-23,共3页
:作者1996年4~7月在紫蓬山区国家级森林公园,对白鹭、池鹭和夜鹭繁殖种群的数量和繁殖成效进行了研究。结果表明:三块样地中,夜鹭的种群平均密度最大,白鹭的种群平均密度最小;白鹭、池鹭和夜鹭的种群繁殖生产力分别为23... :作者1996年4~7月在紫蓬山区国家级森林公园,对白鹭、池鹭和夜鹭繁殖种群的数量和繁殖成效进行了研究。结果表明:三块样地中,夜鹭的种群平均密度最大,白鹭的种群平均密度最小;白鹭、池鹭和夜鹭的种群繁殖生产力分别为2374ind/hm2、1441ind/hm2和2012ind/hm2;繁殖成效分别为520%、551%和451%。繁殖成效与巢位高度有关,低位巢卵损失率高,高位巢雏丢失率高。 展开更多
关键词 繁殖种群 种群密度 繁殖成效
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内蒙古桃-阿海子的生境演替与水鸟群落的兴衰 被引量:11
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作者 何芬奇 任永奇 郭玉民 《湿地科学与管理》 2015年第2期54-58,共5页
桃力庙-阿拉善湾海子是内蒙古西部鄂尔多斯高原上一个水面曾为10 km2的荒漠咸水湖泊,因其在20世纪90年代承载了遗鸥最大繁殖群,于2002年被认定为全球第1148号国际重要湿地。随后,干旱少雨加之严重的人为干扰使桃-阿海子趋于干涸,遗鸥繁... 桃力庙-阿拉善湾海子是内蒙古西部鄂尔多斯高原上一个水面曾为10 km2的荒漠咸水湖泊,因其在20世纪90年代承载了遗鸥最大繁殖群,于2002年被认定为全球第1148号国际重要湿地。随后,干旱少雨加之严重的人为干扰使桃-阿海子趋于干涸,遗鸥繁殖群于2004年放弃该地点而迁居他地,2005年当地水鸟群落彻底消失。数年后,桃-阿海子干涸湖底发育起碱蓬群落。自2011年蓑羽鹤在其间营巢繁殖,且数量逐年增多,并出现蓑羽鹤非繁殖群在此停歇与栖居。在鄂尔多斯高原东部已干涸的湖泊中,桃-阿海子是唯一一处在其湖底碱蓬群落发育后进而成为大型鸟类繁殖与栖息生境的地点,它将以何种方式演替值得关注。 展开更多
关键词 桃-阿海子 水鸟群落的兴衰 生境演替 蓑羽鹤繁殖地
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半散放条件下普通斑马的种群特征 被引量:2
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作者 迟俊 徐晖 于明斌 《兽类学报》 CAS CSCD 北大核心 2014年第4期419-422,共4页
普通斑马又称平原斑马(Equus burchelli),隶属于奇蹄目马科,是一种极具观赏价值的大型哺乳动物。广泛分布于非洲,喜欢栖息在平原和草原,随季节和食物迁徙。普通斑马是社会性动物,习惯群体生活,规模较小的群体由1只雄性和2-6只雌性以... 普通斑马又称平原斑马(Equus burchelli),隶属于奇蹄目马科,是一种极具观赏价值的大型哺乳动物。广泛分布于非洲,喜欢栖息在平原和草原,随季节和食物迁徙。普通斑马是社会性动物,习惯群体生活,规模较小的群体由1只雄性和2-6只雌性以及它们未成年的子女组成;或是由十几只未成年的雄性普通斑马组成;较大的群体则有几百只,它们通常是由若干个小规模的群体组成。 展开更多
关键词 普通斑马 首次繁殖年龄 种群结构 生育间隔
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黄腰柳莺的繁殖生态和种群动态
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作者 刘廼发 陈毅峰 《Zoological Research》 SCIE CAS 1988年第S01期1-6,共6页
本文报道黄腰柳莺Phylloscopus proregulus的繁殖生态和种群动态,内容包括营巢环境、巢、卵、孵卵、育雏、雏鸟的发育,种群繁殖力、繁殖成功率和种群数量及变动。
关键词 黄腰柳莺 繁殖生态 种群动态 繁殖成功率
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陕西省宁陕朱鹮再引入种群之现状 被引量:10
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作者 陈文贵 李夏 +2 位作者 刘超 王莉 于晓平 《野生动物》 2013年第1期23-24,49,共3页
再引入工程就是通过向野外释放笼养个体尝试建立濒危物种可自我维持的野生种群。我们报道了2008~2011年陕西宁陕县朱鹦再引入种群存活现状。从2007年5月~2011年10月,共有56只笼养朱鹦个体(27♀,29♂)被相继释放到野外。目前已形成10... 再引入工程就是通过向野外释放笼养个体尝试建立濒危物种可自我维持的野生种群。我们报道了2008~2011年陕西宁陕县朱鹦再引入种群存活现状。从2007年5月~2011年10月,共有56只笼养朱鹦个体(27♀,29♂)被相继释放到野外。目前已形成10个繁殖配对,并成功出飞幼鸟33只。平均窝卵数3.14±1.06,每窝平均育成幼鸟1.57±1.03。我们认为饥饿和王锦蛇的捕食是朱鹦幼体、成体死亡的主要原因。最后提出了再引入过程存在的问题和相应的保护建议。 展开更多
关键词 再引入 繁殖成功率 种群存活率 朱鹮 宁陕
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生境破碎对古尔班通古特沙漠南缘骆驼刺种群生物学特性的影响 被引量:1
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作者 马霞 吴玲 +1 位作者 刘丹 马淼 《生态学报》 CAS CSCD 北大核心 2021年第12期4935-4941,共7页
在破碎化生境中,植物种群的生物学特性直接反映植物对环境的响应特征和适应对策,探讨不同破碎化程度生境中植株的大小、密度、结实率、种子大小、种子质量以及萌发特性等,对深入了解植物在不同生境中的生存和繁殖状况有重要的指导意义... 在破碎化生境中,植物种群的生物学特性直接反映植物对环境的响应特征和适应对策,探讨不同破碎化程度生境中植株的大小、密度、结实率、种子大小、种子质量以及萌发特性等,对深入了解植物在不同生境中的生存和繁殖状况有重要的指导意义。对古尔班通古特沙漠南缘9个斑块化骆驼刺种群的形态特征和繁殖生物学参数进行了连续2年的调查研究,研究结果表明:随着生境破碎化程度的加剧,骆驼刺的株高、冠幅、密度、结实率、种子大小、种子质量以及萌发率等均显著下降(P<0.05)。生境破碎不仅强烈抑制了骆驼刺植株的营养生长,使其生长矮小,个体分布稀疏,而且严重阻碍了骆驼刺的繁殖成功和种群更新,增加了种群衰退甚至灭绝的风险。 展开更多
关键词 生境破碎化 骆驼刺 形态特征 繁殖成功 种群更新 古尔班通古特沙漠
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Novel insights into the reproductive strategies of wild Chinese sturgeon(Acipenser sinensis)populations based on the kinship analysis 被引量:3
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作者 Dan Yu Xin Gao +7 位作者 Zhongyuan Shen Masami Fujiwara Ping Yang Tao Chang Futie Zhang Xinghua Wu Zhonghua Duan Huanzhang Liu 《Water Biology and Security》 2023年第2期63-72,共10页
Understanding the reproductive strategy of an organism is important in conservation ecology as it directly affects the population performance under changing environmental conditions.Chinese sturgeon(Acipenser sinensis... Understanding the reproductive strategy of an organism is important in conservation ecology as it directly affects the population performance under changing environmental conditions.Chinese sturgeon(Acipenser sinensis)are the largest anadromous fish in the Yangtze River,China.Currently,the species has only one spawning ground and has failed to spawn in recent years,leading it to the brink of extinction.To develop effective conservation measures,a further understanding of its reproductive strategy is needed.In our study,we conducted kinship analyses by using mitochondrial and microsatellite DNA data from 216 wild juveniles collected over nine years(20062013,2015)to understand the mating system,breeding interval,effective number of breeding adults,and reproductive success.The results from these analyses suggested polygynandry,with some parents contributing up to eight half-sibling juvenile genotypes.Although the spawning ground was restricted to a limited area,genetic diversity was maintained at a relatively high level(observed heterozygosity from 0.698 to 0.787 and expected heterozygosity from 0.763 to 0.787)and inbreeding coefficients in each year-class ranged from1% to 9%(low to modest detrimental effects on offspring).A parental inference analysis revealed that Chinese sturgeon have a breeding interval of 2-6 years,indicating that it has the potential to feed,accumulate nutrition in the ocean,and then migrate back to the Yangtze River for iteroparous reproduction.The annual effective number of breeders in the Yangtze River ranged from 14 to 161 during the study period,and it decreased by 62.1%from the 20112014 year-classes.This sharp population decline likely contributes to the reproduction failure.However,the ratios of effective to census population size(Ne/Nc)were all larger than 0.20 after the 2010 year-class,indicating relatively even reproductive success.Based on these results,a suggested approach to protect this species is to restock parent fish to increase the reproductive stock size and optimize the discharge of the Three Gorges Dam to reduce the unsuitable hydrological conditions and rehabilitate spawning ground habitats. 展开更多
关键词 breeding interval Genetic mating systems population size Reproductive success Sweepstakes reproductive success
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