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Heart Failure-Like Reaction Is Likely Involved in the feeding behaviour of Blood-Sucking Leeches

Advances in Bioscience and Biotechnology 2024年第1期15卷 52-69页

作者： Li Yang Jiao Shu Xiao Wang Wei Yu Debin Wang Zichao Liu Bin Wang College of Pharmacy Dali University Dali China ERC of Novel Livestock & Poultry Vaccine & Crucial Industrial Tech of Yunnan DOE Kunming University Kunming China Department of Pharmacy 920th Hospital of Joint Logistics Support Force PLA Kunming China

Medicinal leeches have been utilized in therapy for thousands of years. However, the adaptation physiology between leeches and hosts is not fully understand. To disclose the molecular mechanisms of adaptation between leech and host, the body transcriptomes of hunger and fed blood-sucking Poecilobdella javanica, Haemadipsa cavatuses, and Hirudo nipponia leeches were obtained by RNA sequencing, after comparison, a stratified unigenes group was obtained, which closely correlated to body distension. In the group, Rfamide receptor decreased significantly (P feeding behaviour.

关键词： Blood-Sucking Leeches Transcriptomic Analysis Heart Failure feeding behaviour

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Biological parameters and feeding behaviour of invasive whelk Rapana venosa Valenciennes,1846 in the south-eastern Black Sea of Turkey

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Journal of Coastal Life Medicine 2014年第6期 442-446页

作者： Hacer Saglam Ertug Düzgünes Karadeniz Technical University Faculty of Marine ScienceÇamburnu 61530TrabzonTurkey

Objective:To determine length-weight relationships,growth type and feeding behavior of the benthic predator Rapa whelk at the coast of Camburnu,south-eastern Black ***:Rapa whelk was monthly collected by dredge sampling on the south-eastern Black Sea at 20 m *** relationships between morphometric parameters of Rapa whelk were described by linear and exponential *** allometric growth of each variable relative to shell length(SL)was calculated from the function Y=aSL^(b) or logY=loga_(+)*** functional regression b values were tested by t-test at the 0.05 significance level if it was significantly different from isometric *** total time spent on feeding either on mussel tissue or live mussels was recorded for each individual under controlled conditions in ***:The length-weight relationships showed positive allometric growth and no inter-sex *** size in the male population was significantly higher than in the individuals of the *** characters in males and females showed a trend towards allometry rather than *** the total time spent feeding increased with increasing prey size the total time that Rapana venosa spent feeding decreased with increasing Rapa whelk *** total average feeding time needed by Rapa whelks was 160 *** they took 310 min on live mussels in 27-28℃ in the laboratory ***:Length and weight relationships,growth type,total time spent feeding of this species were explained in details for this *** would be useful to sustainable management in the south-eastern Black Sea of *** results about the feeding behaviour of this species will contribute to the understanding of the role of this species within the ecosystem.

关键词： Rapana venosa Rapa whelk Length-weight relationships Growth type feeding behaviour Black Sea

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温室白粉虱(Trialeurodes vaporariorum Westwood)的刺探及取食过程(英语)

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Insect Science 1994年第1期1卷 67-76页

作者：徐汝梅张芸马文儒北京师范大学生物学系北京师范大学生物学系北京100875

温室白粉虱对于不同种的植物和不同叶龄的叶片具有不同程度的偏好性.它们明显地偏好烟草、黄瓜、蚕豆及江豆的嫩叶,而不偏好蚕豆、江豆的老叶及青椒的嫩叶.行为研究表明在偏好的植物叶片上,粉虱停留的总时间及刺探的总时间明显地长于在... 详细信息

温室白粉虱对于不同种的植物和不同叶龄的叶片具有不同程度的偏好性.它们明显地偏好烟草、黄瓜、蚕豆及江豆的嫩叶,而不偏好蚕豆、江豆的老叶及青椒的嫩叶.行为研究表明在偏好的植物叶片上,粉虱停留的总时间及刺探的总时间明显地长于在不偏好的植物叶片上的相应时间.在不偏好的叶片上,刺探往往只持续2分钟左右,一般不超过5分钟.在偏好的叶片上,既有多次短时间的刺探,也有10分钟以上的刺探(+取食).形态研究表明,粉虱的口计一般需10～15分钟达到初皮都取食.刺探过程仅需10～15分钟.刺探可进一步划分为短于2分钟、深度约20～50μm的试验性刺探和长于5分钟的探查性刺探.试验性刺探是粉虱确定对宿主植物选择的关键过程,而叶表蜡层中的化学物质可能起重要作用.

关键词： greenhouse whitefly feeding behaviour stylet penetration test probing exploratory probing

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