Results 11 to 20 of about 115,386 (212)

Morphological and Molecular Characterization of Eimeria saudiensis From Arabian Oryx (Oryx leucoryx) Held in Captivity in the Sultanate of Oman 阿曼苏丹国圈养阿拉伯羚羊 (Oryx leucoryx) 体内沙特艾美球虫 (Eimeria saudiensis) 的形态学与分子特征

open access: yesWildlife Letters, EarlyView.
Eimeria saudiensis represents a genus of apicomplexan parasites capable of inducing coccidiosis in Arabian oryx. Our research concentrated on the morphological and molecular investigation of Eimeria spp. in the captive oryx herd in Oman. The therapeutic and management practices employed at the Mammals Breeding Center were reassessed to diminish ...
Khalid Al‐Habsi   +7 more
wiley   +1 more source

Reconstructing Old Chinese *‐ts Using Han‐Time Material

open access: yesTransactions of the Philological Society, EarlyView.
Abstract Baxter & Sagart (2014b) reconstruct *‐Vt‐s on the basis of Middle Chinese reflexes in ‐jH (from some OC *‐s) coupled with either etymological or graphic connections to words in Middle Chinese ‐t. This approach, while perfectly sound, can suffer from lack of etymological or graphic data, leading to missed reconstructions. Since Old Chinese *‐ts
Julien Baley
wiley   +1 more source

Cost of parasite exposure depends on host ontogeny 寄生接觸的代價依賴於宿主發育階段

open access: yesEcological Entomology, Volume 51, Issue 3, Page 592-603, June 2026.
The cost of parasite exposure varies across host developmental stages, demonstrating that ontogeny influences the expression of non‐consumptive effects (NCEs). Mite exposure resulted in consumptive effects in fly eggs and NCEs in early‐stage pupae; mite longevity was comparable when provisioned with pupae or water but increased when provisioned with ...
Lisa R. MacLeod   +2 more
wiley   +1 more source

イナゴ ラン キセイバチ ニカンスル ケンキュウダイ10ホウ : トクニ キセイバチ ムライクロタマゴバチ オヨビ ツルオカクロタマゴバチ ノ リヨウ カチ ニツイテ [PDF]

open access: yes, 1959
【摘要】 本誌の第1報から第9報まではムライクロクマゴバチとツルオカクログマゴバチの成熱,未成熟ステージの主として生態学的研究の結果を報告した.一方イナゴ仔虫及び両卵寄生蜂に対する農薬の影響,日本におけるイナゴの分布と発生状況,イナゴ卵塊の分布密書度,深度と大きさなどについては別誌(山形農林学会報)にそれらを報告しておいた.本報は上の基礎研究から両卵寄生蜂の利用価値を推論したものである.1) 日本の場合,両卵寄生蜂は寄主成虫の分布に伴い,各地の水田地帯に広く分布していたものと思われる(北海道は未確認 ...
村井 貞彰
core   +1 more source

Parental care and bird embryonic metabolism: A comparison between uniparentally incubating Silver‐throated Tits and biparentally incubating Black‐throated Tits

open access: yesFunctional Ecology, Volume 40, Issue 4, Page 800-815, April 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Studies have shown that organisms may adjust metabolic rates in response to thermal variability, highlighting metabolic plasticity as a key adaptive mechanism. Understanding the extent of metabolic plasticity of an organism is key to predicting its adaptation to climate
Qian Hu   +6 more
wiley   +1 more source

Physiological roles of Runx3 in female reproductive organs in mice [PDF]

open access: yes, 2011
Runx3(Runtdomaintranscriptionfactor3)はRunxファミリーに属する転写因子で雌マウスにおいてRunx3 mRNAは, 卵巣や子宮に発現していた。雌のRunx3(-/-)マウスは不妊であった。Runx3(-/-)マウスは卵胞形成異常を起こしており, 無排卵であった。一方で, 排卵能および黄体形成能は有していた。以上より, Runx3は卵胞形成および排卵制御に関与していることを明らかにした。Runx3(-/-)マウスの子宮は萎縮している。子宮内膜上皮細胞では ...
Sakuma, Atsuko   +3 more
core  

First Confirmed Cooperative Breeding of the Brown Hornbill (Anorrhinus austeni) in China at the Sino–Lao Frontier 中国中老边境尚勇保护区首次记录白喉犀鸟 (Anorrhinus austeni) 的合作繁殖行为

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 10-15, March 2026.
First confirmed breeding of the Brown Hornbill in China, documented through cooperative feeding in Shangyong Protected Area. ABSTRACT The Brown Hornbill (Anorrhinus austeni), a Near Threatened frugivore, reaches the northern edge of its distribution in southern Yunnan, China, yet breeding had not been previously documented with site‐attributed nests in
Junsong Li   +8 more
wiley   +1 more source

白枕鹤、蓑羽鹤、灰鹤三种鹤卵人工孵化的研究

open access: yes野生动物学报, 2007
通过对哈尔滨北方森林动物园人工饲养的白枕鹤、蓑羽鹤和灰鹤2004~2006年所产卵人工孵化的研究,结果表明:3种鹤卵前中期的孵化温度为37.6~37.8℃,相对湿度为48%~52%;孵化后期的温度为36.7~37℃,相对湿度为57%~62%;白枕鹤卵的人工孵化时间平均为30 d 2 h,平均失重率为13.41%;蓑羽鹤卵的人工孵化时间平均为27 d 15 h,平均失重率为15.06%;灰鹤卵的人工孵化时间平均为28 d 9 h,平均失重率为15.93%。
何相宝   +3 more
doaj  

Ultrasound features in early pregnancy for predicting abnormal karyotype in first‐trimester miscarriage

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.
ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty   +5 more
wiley   +1 more source

大美洲鸵人工孵化技术研究

open access: yes野生动物学报, 2013
大美洲鸵,现已被列入IUCN世界濒危动物红色名录(NT)。近年来,众多动物园饲养管理人员对大美洲鸵的饲养管理进行了深入的研究,但有关大美洲鸵人工孵化技术的研究尚属于空白阶段。本研究基于1998年至今的孵化经验和实践操作,着重从大美洲鸵卵的处理、孵化前准备及孵化技术3个方面内容进行探讨。研究显示:1)种卵的新鲜度、形状、大小、重量、卵壳厚度、消毒过程等因素对孵化成功率有直接影响;2)待孵的大美洲鸵的种卵,贮存温度控制在1520℃间,相对湿度约70%75%,入孵时必须对种卵进行6 h左右的预热处理;3 ...
杨天春, 黄康宁
doaj  

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