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Body Size and Reproductive Tactics in Varanid lizards
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作者 Yu DU Longhui LIN +2 位作者 Yuntao YAO Chixian LIN Xiang JI 《Asian Herpetological Research》 SCIE 2014年第4期263-270,共8页
Body size and female reproduction in the water adult females larger than 500 mm SVL and 32 adult males Ledong, Hainan under permit to our laboratory in Hainan monitor lizard (Varanus salvator) were studied. Forty-tw... Body size and female reproduction in the water adult females larger than 500 mm SVL and 32 adult males Ledong, Hainan under permit to our laboratory in Hainan monitor lizard (Varanus salvator) were studied. Forty-two larger than 400 mm SVL were donated by local people in in 2013 and 2014. The largest male and female measured 745 and 755 mm SVL, respectively. The mean SVL was greater in adult females than in adult males. Males had larger heads (head width) than females of the same SVL. The smallest reproductive female in our sample was 565 mm SVL. Females produced a single clutch of 17.1 (10-23) pliable-shelled eggs per breeding season stretching from mid-June and mid-September. Clutch size and clutch mass were all positively related to female SVL. However, there was no significant linear relationship between egg mass and female SVL. Larger females generally produced more eggs, and thus heavier clutches than did smaller ones. There was no significant linear relationship between relative clutch mass and female SVL. Phylogenetic generalized least squares (PGLS) analysis, accounting for phylogenetic relationships, showed that clutch size was positively correlated with mean maternal SVL in varanid lizards. PGLS analysis showed that phylogenetic relationships did not affect clutch (or/and egg) mass and the SVL although there were significant linear relationship between clutch (or/and egg) mass and mean maternal SVL. Therefore, we could draw some general conclusions about the body size and reproductive tactics in varanid lizards that larger females generally produced more eggs, larger eggs and thus heavier clutches than did smaller ones. 展开更多
关键词 body size female reproduction monitor lizard VARANIDAE
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利用特异引物和直接测序法鉴定圆鼻巨蜥和孟加拉巨蜥 被引量:2
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作者 王利利 彭建军 +3 位作者 于冬梅 胡诗佳 辛翠娜 张宇姝 《四川动物》 CSCD 北大核心 2010年第4期590-592,共3页
利用特异引物扩增法和直接测序法对圆鼻巨蜥Varanus salvator和孟加拉巨蜥Varanus bengalensis进行了物种鉴定。设计通用引物和特异引物扩增COI基因部分序列,根据电泳结果和产物的blast比对结果,成功鉴定两种巨蜥,并对这两种方法的使用... 利用特异引物扩增法和直接测序法对圆鼻巨蜥Varanus salvator和孟加拉巨蜥Varanus bengalensis进行了物种鉴定。设计通用引物和特异引物扩增COI基因部分序列,根据电泳结果和产物的blast比对结果,成功鉴定两种巨蜥,并对这两种方法的使用范围进行了探讨,解决了实际执法中两种巨蜥物种鉴定的需要。 展开更多
关键词 物种鉴定 巨蜥 COI基因 特异引物 DNA测序
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巨蜥的循环系统及其对环境的适应 被引量:5
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作者 赛道建 朱士军 +1 位作者 李师鹏 徐淑娟 《山东师范大学学报(自然科学版)》 CAS 1998年第1期71-77,共7页
巨蜥的心室可分为前后两部分三个相连通的亚腔,即动脉腔、静脉腔和肺腔.由于心房都开口于管状动脉腔右端,心室舒张时,两心房血液同时流出势必造成混合,故右心房内血液首先以量子释放方式经动脉腔流入最腹部的肺腔中,接着左心房内... 巨蜥的心室可分为前后两部分三个相连通的亚腔,即动脉腔、静脉腔和肺腔.由于心房都开口于管状动脉腔右端,心室舒张时,两心房血液同时流出势必造成混合,故右心房内血液首先以量子释放方式经动脉腔流入最腹部的肺腔中,接着左心房内血液因压力升高冲开房室孔进入动脉腔,先后进入动脉腔的静、动脉血界面处有极少量混合血;心室收缩时,水平隔与心室前壁肌嵴嵌合而把心室重新分成动脉腔—静脉腔和肺腔两个独立腔,由于体动脉压较高,血液动力学作用不允许混合血流入体动脉,结果把动、静脉血分流到体动脉和肺动脉中去;冬眠期,这种分隔作用减少肺内血液循环,使高度气化的血液主要循环于体循环中,是对不利于肺呼吸生活环境的适应.与其它动物不同的是,巨蜥有外颈动脉干和无名动脉分别从右体动脉弓发出.尿殖静脉环进入肝脏后形成后大静脉。 展开更多
关键词 巨蜥 循环系统 血液量子释放 环境适应
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巨蜥源嗜水气单胞菌分离株的病原特性分析 被引量:1
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作者 陈武 李婉萍 《动物医学进展》 CSCD 2004年第4期114-116,共3页
从 3批均以呼吸道症状和出血性胃肠炎为主要特征的死亡巨蜥中获得 3株嗜水气单胞菌。其培养性状及生化特性基本一致 ,均可产生β-溶血环。分离株对小鼠有较强的致病性 ,对PG、COS、VAN、CIP、NOR、CAR耐药。 3个菌株具有相同的菌体 (O)... 从 3批均以呼吸道症状和出血性胃肠炎为主要特征的死亡巨蜥中获得 3株嗜水气单胞菌。其培养性状及生化特性基本一致 ,均可产生β-溶血环。分离株对小鼠有较强的致病性 ,对PG、COS、VAN、CIP、NOR、CAR耐药。 3个菌株具有相同的菌体 (O)抗原血清型 ,该血清型与嗜水气单胞菌参考菌株 J1不同。 展开更多
关键词 巨蜥 嗜水气单胞菌 分离株 病原特性
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巨蜥生态标本的制作技术
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作者 阮桂文 《玉林师范学院学报》 2002年第3期84-86,共3页
本文叙述了制作巨蜥生态标本所需要的材料、工具、药品及剥皮和制作步骤。对皮肤内残余物不便剔除的指部、趾部和尾脊骨部分等使用了一些新的处理方法。探讨了在剥制过程中产生的残留物包括躯体和内脏等的再利用。
关键词 生态标本 巨蜥 剥皮 剥制 躯体 残留物 内脏 指部 药品 皮肤
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Differentiating Postmortem Claw Marks by the Asian Water Monitor(Kabaragoya)from Antemortem Sharp Weapon Trauma Based on the Injury Pattern
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作者 Piumi Dileka Chiranthika Madhupoorni A.Gunathilaka +1 位作者 Thilinika Ranchamali Sameera A.Gunawardena 《Journal of Forensic Science and Medicine》 2022年第3期114-117,共4页
The Asian water monitor(Varanussalvator)or kabaragoya isthe predominant large animalscavenger of human remainsin Sri Lanka;however,its significance is rarely discussed in the forensic literature.This is the case of a ... The Asian water monitor(Varanussalvator)or kabaragoya isthe predominant large animalscavenger of human remainsin Sri Lanka;however,its significance is rarely discussed in the forensic literature.This is the case of a 54‑year‑old male with a history of dementia,depression,and wandering behavior whose body was found,partially submerged in a river,2 days after he was reported missing.There were several linear wounds with regular margins over his arms and face which raised the suspicion of homicidal sharp weapon trauma.The injuries were seen in clusters and did not involve harder structures such as tendons,ligaments,or bones.There were no signs of inflammation or bleeding.They were attributed to kabaragoya claw marks,which are postmortem artifacts that mimic incised wounds.However,there were no areas of tissue loss to indicate that the animal had begun feeding on the corpse.This case discusses the problems faced by medicolegal investigators when encountering this phenomenon which is relatively underreported in the forensic literature. 展开更多
关键词 Animal predation antemortem trauma monitor lizards postmortem artifacts postmortem trauma
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