Entomological Science最新文献_第8页

Rediscovery of Macroplea japana (Coleoptera: Chrysomelidae: Donaciinae), an aquatic leaf beetle once thought to be extinct in Japan 曾被认为在日本已灭绝的水生叶甲——大斑金龟甲的重新发现

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-07-02 DOI: 10.1111/ens.12517

Makoto Kato, Teiji Sota

引用次数: 1

Host-use ability of a population of the herbivorous ladybird beetle Henosepilachna vigintioctomaculata depending on Solanum megacarpum in northern Honshu, Japan 日本本州北部以大龙葵为食的草食性瓢虫甲虫种群的寄主利用能力

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-06-29 DOI: 10.1111/ens.12511

Naoyuki Fujiyama

{"title":"Host-use ability of a population of the herbivorous ladybird beetle Henosepilachna vigintioctomaculata depending on Solanum megacarpum in northern Honshu, Japan","authors":"Naoyuki Fujiyama","doi":"10.1111/ens.12511","DOIUrl":"10.1111/ens.12511","url":null,"abstract":"Investigating the well-established relationships between insects and novel host plants will shed light on numerous aspects of evolution and ecology of phytophagous insects. However, in these systems, it is not always clear which plants were originally used as insect hosts, and how the focal insects adapted to the original host(s), before establishing the novel insect–host relationships. Henosepilachna vigintioctomaculata (Motschulsky) (Coleoptera: Coccinellidae) is a well-known pest of the potato Solanum tuberosum (Solanaceae), however its original host in Honshu, the main island of Japan, before the potato introduction is uncertain. A wild solanaceous weed, So. megacarpum, is the most likely candidate for the original host, although the use of this plant by H. vigintioctomaculata has never been recorded in Honshu. This study reports the occurrence of a H. vigintioctomaculata population depending almost solely on So. megacarpum at Yamagata, northern Honshu. Additionally, the host-use ability of this population was compared to that of a pest population under laboratory conditions. Based on the results obtained, it is discussed how the properties of beetles on So. megacarpum facilitated the use of the potato, assuming that So. megacarpum was the original host of H. vigintioctomaculata in Honshu.","PeriodicalId":11745,"journal":{"name":"Entomological Science","volume":"25 3","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41975102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Larval feeding habits of the large-bodied diving beetle Cybister rugosus (Coleoptera: Dytiscidae) under laboratory conditions 实验条件下大型潜水甲虫(鞘翅目:蝶蛾科)幼虫的摄食习性

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-05-23 DOI: 10.1111/ens.12510

Shun Yamasaki, Kohei Watanabe, Shin-ya Ohba

{"title":"Larval feeding habits of the large-bodied diving beetle Cybister rugosus (Coleoptera: Dytiscidae) under laboratory conditions","authors":"Shun Yamasaki, Kohei Watanabe, Shin-ya Ohba","doi":"10.1111/ens.12510","DOIUrl":"10.1111/ens.12510","url":null,"abstract":"The population of the diving beetle Cybister rugosus (Macleay, 1825) has been declining in recent years, and it is designated as “Vulnerable” (VU) in the Red List of Japan. However, there have been no quantitative studies on the feeding habits of the larval stage of this beetle. Revealing the feeding habits is indispensable for understanding the life history of C. rugosus. In the current study, we reared C. rugosus larvae on different prey taxa (Odonata nymph, fish, tadpole, and shrimp) and evaluated their growth and survival rates. Previous studies have shown that three congeneric Cybister species larvae feed mainly on invertebrates. However, all larval instars of C. rugosus were able to feed on invertebrates and vertebrates and grow. Thus, we considered C. rugosus to be a generalist compared to the other Cybister species. The larval periods were shorter for C. rugosus that fed on Odonata nymphs than on any other prey. Feeding different prey taxa had no significant effect on the body length of newly emerged adult males. However, the body length of newly emerged adult females was larger when the larvae fed on Odonata nymphs than when the larvae fed on fish. As in other Cybister species, we concluded that the Odonata nymph is an appropriate food from the viewpoint of increased growth rate in C. rugosus.","PeriodicalId":11745,"journal":{"name":"Entomological Science","volume":"25 2","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45839567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Life history of Laccophilus lewisioides Brancucci, 1983 (Coleoptera: Dytiscidae) and the ecological significance of the larval period of five Laccophilus species 刘氏乳杆菌(Laccophilus lewisioides Brancucci, 1983)的生活史及五种乳杆菌幼虫期的生态学意义

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-05-17 DOI: 10.1111/ens.12509

Kohei Watanabe

{"title":"Life history of Laccophilus lewisioides Brancucci, 1983 (Coleoptera: Dytiscidae) and the ecological significance of the larval period of five Laccophilus species","authors":"Kohei Watanabe","doi":"10.1111/ens.12509","DOIUrl":"10.1111/ens.12509","url":null,"abstract":"Dytiscidae are the largest aquatic group belonging to the order Coleoptera. However, approximately 40% of Dytiscidae members have been threatened with extinction in Japan, and Laccophilus is one of the genera with considerable decline. A description of the life history of these species and their ecological information will contribute to their conservation. In this study, I described the life history of Laccophilus lewisioides Brancucci, 1983 (Coleoptera: Dytiscidae: Laccophilinae) using rearing-based methods under laboratory conditions. I then compared the biology of the larval stages of this species to four Laccophilus species, L. vagelineatus Zimmermann, 1922, L. hebusuensis Watanabe & Kamite, 2020, L. yoshitomii Watanabe & Kamite, 2018, and L. kobensis Sharp, 1873. The developmental period for each immature stage at 26°C was as follows: first instar larva, 4–12 days (n = 16); second instar larva, 5–9 days (n = 15); third instar larva, 5–10 days (n = 15); landing to pupation, 2–3 days (n = 2); pupation to adult emergence, 4 days (n = 1); and landing to escape, 8–9 days (n = 14). The total larval period was significantly longer for L. lewisioides than for the other four Laccophilus species. The duration of larval period could be strongly related to the duration of stable water level in the reproductive habitat. The coloration of the larval stage varied between species groups, suggesting that the larvae adapt to the surrounding environment and show a camouflage effect. This is the first report on the immature stages in the life cycle of L. lewisioides.","PeriodicalId":11745,"journal":{"name":"Entomological Science","volume":"25 2","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48010614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The complete aquatic life: Adaptation of Amphiops mater Sharp (Coleoptera: Hydrophilidae) to the water surface during the pupal stage 完整的水生生物：尖脊两栖动物（鞘翅目：水生动物科）在蛹期对水面的适应

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-04-27 DOI: 10.1111/ens.12507

Tomoharu Kuwabara, Masakazu Hayashi

引用次数: 0

Life history of Copelatus zimmermanni Gschwendtner, 1934 (Coleoptera: Dytiscidae) and the ecological significance of the larval period of three Copelatus species 齐默尔曼Copelatus zimmermanni Gschwendtner，1934（鞘翅目：Dytiscidae）的生活史和三种Copelatuss幼虫期的生态意义

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-04-27 DOI: 10.1111/ens.12505

Kohei Watanabe, Shin-ya Ohba

{"title":"Life history of Copelatus zimmermanni Gschwendtner, 1934 (Coleoptera: Dytiscidae) and the ecological significance of the larval period of three Copelatus species","authors":"Kohei Watanabe, Shin-ya Ohba","doi":"10.1111/ens.12505","DOIUrl":"10.1111/ens.12505","url":null,"abstract":"Diving beetles (Dytiscidae) play an important ecological role in most aquatic water habitats. However, approximately 40% of dytiscids in Japan have been classified as threatened, and further knowledge on their life history is necessary to support conservation efforts. In this study, we collected adult Copelatus zimmermanni (Coleoptera: Dytiscidae) from an ephemeral rain pool and raised a generation under laboratory conditions. We then compared the larval period with two Copelatus species, C. parallelus and C. masculinus. Complete development (egg to adult) occurred in 39–61 days (n = 10) and comprised the following stages: egg (3–6 days, n = 20), first instar (3–8 days, n = 20), second instar (3–12 days, n = 15), third instar larvae (4–13 days, n = 14), and landing to escape (11–36 days, n = 10). The third instar and total larval periods of C. zimmermanni were significantly shorter than those of C. parallelus and C. masculinus. The differences in the duration of larval periods may be related to the permanence of water sources used as reproductive sites for each species. We suggest that the shorter developmental period of C. zimmermanni allows it to complete entire lifecycles even in highly ephemeral aquatic habitats. This is the first report on the immature stages of a species within the C. nigrolineatus species group.","PeriodicalId":11745,"journal":{"name":"Entomological Science","volume":"25 2","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41566228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Coexistence mechanisms of Colocasiomyia species (Diptera: Drosophilidae) sharing inflorescences of Alocasia odora (Araceae) as a host plant: Comparison between two- and three-species systems 以天南星科(Alocasia odora)植物为寄主共享花序的大花蝇属(双翅目:果蝇科)的共存机制:两种与三种系统的比较

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-04-26 DOI: 10.1111/ens.12506

Masanori J. Toda, Kohei Takenaka Takano, Toru Katoh, Ling Xiao, Jian-Jun Gao, Masako Yafuso

{"title":"Coexistence mechanisms of Colocasiomyia species (Diptera: Drosophilidae) sharing inflorescences of Alocasia odora (Araceae) as a host plant: Comparison between two- and three-species systems","authors":"Masanori J. Toda, Kohei Takenaka Takano, Toru Katoh, Ling Xiao, Jian-Jun Gao, Masako Yafuso","doi":"10.1111/ens.12506","DOIUrl":"10.1111/ens.12506","url":null,"abstract":"There are two pollination-mutualistic systems between Colocasiomyia flies and Alocasia odora. The two systems are different in the number of fly species involved. One is a two-to-one system, where C. xenalocasiae and C. alocasiae share inflorescences/infructescences of A. odora in the Ryukyu Islands (Japan), Taiwan, Guangdong, and Guangxi (China). The other system, which additionally involves the third species, C. grandis, is seen from southern Yunnan (China) to northern Vietnam. To reveal coexistence mechanisms in these systems, we compared breeding habits of the component species between the two- and three-species systems in natural conditions, and undertook a field experiment to test a hypothesis whether oviposition sites of the component species are affected by interference competition between them. The observations under natural conditions confirmed the breeding niche separation of component species in the two-species system: C. xenalocasiae uses mostly the pistillate region of spadix, whereas C. alocasiae uses mostly the staminate region, with partial overlap of their oviposition sites in the lower intermediate region. In the three-species system, however, these two species separated their oviposition sites nearly completely from each other, suggesting that they are excluded from the lower intermediate region by the third species, C. grandis, which monopolizes there. The result of field experiments did not support this hypothesis: neither C. xenalocasiae nor C. alocasiae changed oviposition behavior regardless of the absence or the presence of C. grandis. Therefore, we propose an alternative hypothesis that the oviposition site segregation among the three species has evolved as a consequence of the past and/or ongoing competition of larvae.","PeriodicalId":11745,"journal":{"name":"Entomological Science","volume":"25 2","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ens.12506","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46182098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of spraying behavior and body size on predators of the big head stick insect Megacrania tsudai (Phasmatodea: Phasmatidae) 喷药行为和体型对大头竹节虫捕食者的影响

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-04-22 DOI: 10.1111/ens.12508

Shun Kobayashi, Chihaya Takaoka, Hiromu Tanimoto, Satoru Arimitsu, Masako Izawa

{"title":"Effect of spraying behavior and body size on predators of the big head stick insect Megacrania tsudai (Phasmatodea: Phasmatidae)","authors":"Shun Kobayashi, Chihaya Takaoka, Hiromu Tanimoto, Satoru Arimitsu, Masako Izawa","doi":"10.1111/ens.12508","DOIUrl":"10.1111/ens.12508","url":null,"abstract":"Some insects use multiple defensive methods, although little research exists on the complementary effects of these strategies on their predators. For example, Megacrania tsudai uses crypsis to blend with its background and when threatened it uses a chemical spray. However, the effectiveness of the spraying defense is unclear, although some potential predators were known. This study aimed to reveal the effect of the secondary defenses of M. tsudai. Although the liquid chemical amount changes with growth stages, neither geckos, frogs, spiders nor insects could predate M. tsudai when it grew to a certain size, regardless of the spray effectiveness. Therefore, at the fifth instar or older growth stages of M. tsudai, its predators were limited to birds. Megacrania tsudai that did not spray their liquid chemicals were attacked by predators (other than birds) more than species that sprayed the chemicals. Birds predated all instars regardless of the amount of liquid spray. In conclusion, M. tsudai mainly uses cryptic coloration for predators using visual sense such as diurnal birds, and body size and chemical defenses for other predators, as its defensive measure. The defensive strategy of M. tsudai could relate to its life history.","PeriodicalId":11745,"journal":{"name":"Entomological Science","volume":"25 2","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ens.12508","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45888573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Marine rove beetles in a low-salinity lake: Cafius pectoralis (Coleoptera: Staphylinidae) prey on beach hopper in brackish water 低盐度湖泊中的海洋游蝽:在半咸淡水中捕食海滩跳虱(鞘翅目:棘虫科)

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-04-01 DOI: 10.1111/ens.12504

Masakazu Hayashi

引用次数: 0

Phylogeographic analysis of Ligidium japonicum (Isopoda: Ligiidae) and its allied species reveals high biodiversity and genetic differentiation in the Kanto region, Japan 日本Ligidium japonicum(等足目:Ligiidae)及其近缘种的系统地理分析揭示了日本关东地区高度的生物多样性和遗传分化

IF 0.9 4区农林科学

Entomological Science Pub Date : 2022-03-04 DOI: 10.1111/ens.12501

Hiroki Yoshino, Kohei Kubota

{"title":"Phylogeographic analysis of Ligidium japonicum (Isopoda: Ligiidae) and its allied species reveals high biodiversity and genetic differentiation in the Kanto region, Japan","authors":"Hiroki Yoshino, Kohei Kubota","doi":"10.1111/ens.12501","DOIUrl":"10.1111/ens.12501","url":null,"abstract":"Research of the diversity and evolutionary history of Japanese soil invertebrates is scarce. Molecular data analysis can help to elucidate species classifications and evolutionary processes. We analyzed the mitochondrial cytochrome oxidase subunit I (COI) and nuclear 28S rDNA genes and the morphology of the male pleopod 2 endopod of Ligidium japonicum and its allied species from 67 sites in Hokkaido, Honshu and Shikoku, where only L. japonicum is thought to occur. We found males of the L. japonicum complex with a pleopod 2 endopod morphology matching that of the L. japonicum syntype specimens, except for the number of denticles at the inner margin. There were also more than five species that differed morphologically from the L. japonicum complex, and most of these species had allopatric distributions despite the absence of obvious barriers. A time-calibrated molecular phylogeny implied that the L. japonicum complex of the Kanto region first differentiated allopatrically in the mountains; this was followed by independent dispersal of three lineages to the Kanto Plain and Boso Peninsula, where secondary contact occurred. Two of the three sympatrically distributed L. japonicum complex lineages had a significant difference in the number of denticles at the inner margin of male pleopod 2 endopods. This variation implies the presence of cryptic species within the L. japonicum complex.","PeriodicalId":11745,"journal":{"name":"Entomological Science","volume":"25 2","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41322990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1