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Juvenile socio-sexual experience determines lifetime sperm expenditure and adult survival in a polygamous moth, Ephestiakuehniella

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Insect science 2023年第1期30卷 232-240页

作者： Junyan Liu Xiong Z.He Xia-Lin Zheng Yujing Zhang Qiao Wang School of agriculture and environment Massey UniversityPalmerston NorthNew Zealand guangxi key laboratory of agric-environment and agric-products safety National Demonstration Center for Experimental Plant Science EducationCollege of AgricultureGuangxi UniversityNanningChina

Male animals often adjust their sperm investment in response to sperm competition *** date,only a few studies have investigated how juvenile sociosexual settings affect sperm production before adulthood and sperm allocation during the first ***,it is unclear whether juvenile sociosexual experience(1)determines lifetime sperm production and allocation in any animal species;(2)alters the eupyrene:apyrene sperm ratio in lifetime ejaculates of any lepidopteran insects,and(3)influences lifetime ejaculation patterns,number of matings and adult *** we used a polygamous moth,Ephestia kuehniella,to address these *** male adult emergence from juveniles reared at different density and sex ratio,we paired each male with a virgin female daily until his *** dissected each mated female to count the sperm transferred and recorded male longevity and lifetime number of *** demonstrate for the first time that males ejaculated significantly more eupyrenes and apyrenes in their lifetime after their young were exposed to juvenile *** moths continued to produce eupyrene sperm,contradicting the previous predictions for *** eupyrene:apyrene ratio in the lifetime ejaculates remained unchanged in all treatments,suggesting that the sperm ratio is critical for reproductive *** juvenile exposure to other juveniles regardless of sex ratio caused significantly shorter adult longevity and faster decline in sperm ejaculation over successive ***,males from all treatments achieved similar number of matings in their *** study provides insight into adaptive resource allocation by males in response to juvenile sociosexual environment.

关键词： juvenile experience Lepidoptera mating frequency sperm allocation sperm production sperm ratio

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Larval social cues influence testicular investment in an insect

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Current Zoology 2022年第1期68卷 1-8页

作者： Junyan LIU Xiong ZHE Xia-Lin ZHENG Yujing ZHANG Qiao WANG School of agriculture and environment Massey UniversityPalmerston North 4100New Zealand guangxi key laboratory of agric-environment and agric-products safety National Demonstration Centre for Experimental Plant Science EducationCollege of AgricultureGuangxi UniversityNanning 530004China

Socio-sexual environment can have critical impacts on reproduction and survival of ***,they need to prepare themselves by allocating more resources to competitive traits that give them advantages in the particular social setting they have been *** shows that a male usually raises his investment in sperm after he detects the current or future increase of sperm competition because relative sperm numbers can determine his paternity *** leads to the wide use of testis size as an index of the sperm competition level,yet testis size does not always reflect sperm *** date,it is not clear whether male animals fine-tune their resource allocation to sperm production and other traits as a response to social cues during their growth and *** a polygamous insect Ephestia kuehniella,we tested whether and how larval social environment affected sperm production,testis size,and body *** exposed the male larvae to different juvenile socio-sexual cues and measured these *** demonstrate that regardless of sex ratio,group-reared males produced more eupyrenes(fertile and nucleate sperm)but smaller testes than singly reared ones,and that body weight and apyrene(infertile and anucleate sperm)numbers remained the same across *** conclude that the presence of larval social,but not sexual cues is responsible for the increase of eupyrene production and decrease of testis *** suggest that male larvae increase investment in fertile sperm cells and reduce investment in other testicular tissues in the presence of conspecific juvenile cues.

关键词： body weight immature stage pyralidae sperm production social environment testis size

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Two new and two known species of the genus Togoperla(Plecoptera:Perlidae)from guangxi of southern China

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Entomotaxonomia 2022年第1期44卷 1-12页

作者： Raorao MO Guoquan WANG Ding YANG Weihai LI guangxi key laboratory of agric-environment and agric-products safety and national Demonstration Center for experimental plant science education Agricultural CollegeGuangxi UniversityNanningGuangxi 530004China Department of plant Protection Henan Institute of Science and TechnologyXinxiangHenan 453003China Department of Entomology China Agricultural UniversityBeijing 100193China

Two new species of the genus Togoperla are described from guangxi,China:*** *** *** *** perpicta Klapálek,1921 and *** Du&Chou,1999 from the same region are diagnosed and *** taxonomic relationships are discussed wit... 详细信息

关键词： Perlinae taxonomy distribution

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Ormosia Rondani(Diptera:Limoniidae:Chioneinae),anewly recorded genus fromShandong,Chinawithdescription of one new species

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Entomotaxonomia 2022年第4期44卷 285-292页

作者： Yuanyuan XU Peifu ZHANG Guoquan WANG Ding YANG Zehui KANG guangxi key laboratory of agric-environment and agric-products safety and national demonstrationcenter for experimental plant science education Agricultural CollegeGuangxi UniversityNanningGuangxi 530004China Shandong Engineering Research Center for environment-Friendly agricultural Pest Management Collegeof Plant Health and MedicineQingdao Agricultural UniversityQingdaoShandong 266109China Fangzi Bureau of agriculture and Rural Af airs WeifangShandong 261200China College of plant Protection China Agricultural UniversityBeijing 100193China

The family Limoniidae includes a large number of species,including agricultural pests,pollinators,and environmental ***,the genus Ormosia Rondani,1856,a large genus in the familyLimoniidae,is recorded from Shandong,China for the first *** species O.(O.)kunyushana Xu,Yang&Kang *** described and illustrated as new to *** species is distinguished fromits congenersmainly by body color and male genitalia.A key to known Chinese Ormosia *** is also provided.

关键词： crane flies Chioneinae new record taxonomy

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