Zoological Science最新文献

Rediscovery of the Red-And-White Commensal Shrimp Athanopsis dentipes (Alpheidae), Revealing an Expanded Host Range Among Spoon Worms (Annelida: Thalassematidae). 红白共生虾Athanopsis dentipes（虾科）的重新发现，揭示了勺子蠕虫（环节动物：海虾科）中扩大的宿主范围。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs250106

Tomoya Hanaoka, Isao Hirabayashi, Takahiro Sugiyama, Keiichi Nomura, Gyo Itani, Michitaka Shimomura, Ryutaro Goto

{"title":"Rediscovery of the Red-And-White Commensal Shrimp Athanopsis dentipes (Alpheidae), Revealing an Expanded Host Range Among Spoon Worms (Annelida: Thalassematidae).","authors":"Tomoya Hanaoka, Isao Hirabayashi, Takahiro Sugiyama, Keiichi Nomura, Gyo Itani, Michitaka Shimomura, Ryutaro Goto","doi":"10.2108/zs250106","DOIUrl":"https://doi.org/10.2108/zs250106","url":null,"abstract":"The commensal shrimp genus Athanopsis Coutière, 1897 (Alpheidae) includes nine species worldwide. Almost all congeners have been confirmed to be associated with spoon worms (Annelida: Thalassematidae). Athanopsis dentipes Miya, 1980 was originally described about 45 years ago based only on the male specimens collected along with the thalassematid spoon worm Anelassorhynchus cf. mucosus (Ikeda, 1904) in Kyushu Island, western Japan. However, it has never been collected since its original description. In this study, we rediscovered this species in the intertidal zone of the southern Kii Peninsula, Wakayama Prefecture, central Japan, and redescribed it based on both male and female specimens. Morphologically, this species is distinguished from its closest relative, Athanopsis australis Banner and Banner, 1982, by its ventrally straight rostrum, a large tooth at the cutting edge on the dactylus of major chela, and a small subacute tooth at the ventrolateral distal angle on the merus of third pereopod. All of the specimens were associated with thalassematid hosts, including two genera and four species of Thalassematini-i.e., Listriolobus cf. sorbillans (Lampert, 1883) and three species of Anelassorhynchus Annandale, 1922-substantially expanding the known host range of this shrimp species. The shrimps were observed to scuttle over the body surface of the host in the aquaria. One male-female pair was collected from the same host in February, and two ovigerous females were collected in February and April.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"510-524"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electron Microscopic Analysis of Wing Nanopillar Formation in a Dragonfly and a Cicada. 蜻蜓和蝉翅膀纳米柱形成的电镜分析。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs260020

Kenji Tomita

{"title":"Electron Microscopic Analysis of Wing Nanopillar Formation in a Dragonfly and a Cicada.","authors":"Kenji Tomita","doi":"10.2108/zs260020","DOIUrl":"https://doi.org/10.2108/zs260020","url":null,"abstract":"Insect wings often bear dense arrays of nanoscale protrusions known as nanopillars that confer functions such as water repellency, self-cleaning, and antibacterial activity. However, how these cuticular nanostructures develop remains poorly understood. Here, I investigate the development of wing nanopillars in the dragonfly Anax parthenope and compare it with that in the cicada Hyalessa maculaticollis. Using electron microscopy, I examined the formation of the wing surface from early cuticle deposition to post-ecdysial stages. In the dragonfly, the wing surface remained smooth throughout cuticle formation and nanopillars appeared only several hours after ecdysis, indicating that they likely arise through physicochemical self-organization of wax-based lipids secreted onto the wing surface. In contrast, nanopillars were already present on pharate wings of the cicada, indicating that they form before ecdysis, although the precise timing and mechanism remain unresolved. These findings show that superficially similar nanostructures on insect wings can differ in developmental timing and may arise through different developmental routes, highlighting the diversity of mechanisms underlying cuticular surface patterning.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"492-498"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Male Medaka, Oryzias latipes, Determine Their Reproductive Tactics Based on Dominance Relationships With Rival Males and Courtship Aggressiveness Toward Females. 雄性米达卡鱼：基于与竞争对手的优势关系和对雌性的求爱攻击性来决定它们的繁殖策略。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs250122

Ayaka Wakazono, Yasunori Koya

{"title":"Male Medaka, Oryzias latipes, Determine Their Reproductive Tactics Based on Dominance Relationships With Rival Males and Courtship Aggressiveness Toward Females.","authors":"Ayaka Wakazono, Yasunori Koya","doi":"10.2108/zs250122","DOIUrl":"https://doi.org/10.2108/zs250122","url":null,"abstract":"In animal species where dominance relationships are established through male-male competition, many subordinate males do not participate in reproduction, but some subordinate males gain reproductive opportunities through alternative tactics, such as sneaking. In medaka (Oryzias latipes), in which males flexibly change their reproductive tactics, not only the dominance relationships between males but also the courtship aggressiveness of individual males toward females may influence the selection of reproductive tactics such as pair-spawning, sneaking, and non-participation in reproduction. However, no previous studies have examined the relationship between the dominance relationship between two males and their reproductive tactics, nor the relationship between courtship behavior toward females and their reproductive tactics. In this study, two males were allowed to compete, and an ovulated female was introduced into a tank. Fighting behavior between males when only males were present, fighting behavior between males after the female was introduced, and the courtship behavior of each male toward the female were quantified, and the behavioral patterns were analyzed. The results showed that many subordinate males in male-male competition did not participate in reproduction, and that sneaker males could be classified into two different behavioral patterns: those that were subordinate to rival males and those that were dominant. These results suggest that sneaking is not a fixed tactic but rather that various behavioral patterns can be adopted depending on the aggressiveness of rival males and their courtship positivity toward females, providing important insights into the flexibility of male reproductive tactics.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"499-509"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Specific Histidine Residue Determines Species-Specific Sensitivity to Metal Ions in Ovarian Cancer G Protein-Coupled Receptor 1. 一个特定的组氨酸残基决定了卵巢癌G蛋白偶联受体1对金属离子的物种特异性敏感性。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs250115

Ryo Tachihara, Manami Tachino, Rio Koike, Reina Arase, Keiji Yamamoto, Yuta Miyake, Izumi Uchida, Ayako Ichimura, Kurumi Fujiwara, Yuka Futae, Koichi Sato, Hideaki Tomura

{"title":"A Specific Histidine Residue Determines Species-Specific Sensitivity to Metal Ions in Ovarian Cancer G Protein-Coupled Receptor 1.","authors":"Ryo Tachihara, Manami Tachino, Rio Koike, Reina Arase, Keiji Yamamoto, Yuta Miyake, Izumi Uchida, Ayako Ichimura, Kurumi Fujiwara, Yuka Futae, Koichi Sato, Hideaki Tomura","doi":"10.2108/zs250115","DOIUrl":"https://doi.org/10.2108/zs250115","url":null,"abstract":"Mammalian ovarian cancer G protein-coupled receptor 1 (OGR1; also known as GPR68) functions as both a proton- and metal-ion-sensing receptor, activating multiple intracellular signaling pathways. Although OGR1 homologs across vertebrates are commonly activated under low pH conditions, their responsiveness to metal ions varies by species, possibly reflecting differences in physiological metal requirements. To identify the residues responsible for metal ion sensing, we analyzed human OGR1 and its homologs in zebrafish and African clawed frog. Nickel ions activated human OGR1 and one African clawed frog homolog (xLOGR1#3) but not zebrafish OGR1 and another African clawed frog homolog (xLOGR1#1), which lack a specific histidine residue in the first extracellular loop. Substituting histidine with alanine in human OGR1 reduced metal-ion-induced activation, without significantly affecting proton responsiveness. Conversely, introducing histidine at the corresponding position restored the metal ion sensitivity. This histidine-dependent activation has also been observed for cobalt and manganese ions. These findings suggest that, beyond its role as a proton sensor, OGR1 has evolved metal-ion-sensing capabilities, potentially reflecting species-specific adaptation.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"446-454"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consistency in Mate Preferences by Female Guppies Using Male Chemical Cues. 雌性孔雀鱼在雄性化学暗示下择偶偏好的一致性。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs260019

Ryohei Ito, Mao Shoji, Kenji Karino

{"title":"Consistency in Mate Preferences by Female Guppies Using Male Chemical Cues.","authors":"Ryohei Ito, Mao Shoji, Kenji Karino","doi":"10.2108/zs260019","DOIUrl":"https://doi.org/10.2108/zs260019","url":null,"abstract":"Females often choose mates using multimodal sensory signals from males. However, in many species, it is common for studies to concentrate on mate preferences for specific sensory signals. The guppy (Poecilia reticulata) is a model species used to study female mate choice. Mate preference studies in female guppies have concentrated on male visual cues, such as color spot characteristics and courtship activity. Although female chemical cues are known to affect mating preferences in male guppies, knowledge of the effects of male chemical cues on female mating preferences is limited. In this study, we examined the consistency of mating preferences for male chemical cues among female guppies. We repeatedly performed a dichotomous mate choice experiment using the chemical cues of two males for females daily for 6 successive days (\"6 days' trials\"). The results showed that females preferred one of the two male chemical cues throughout the 6 days' trials, indicating consistent female preference for male chemical cues in this species. In addition, the time spent by females with chemical cues decreased as the 6 days' trials progressed for both males' cues. Males with chemical cues preferred by females possessed larger orange spots than the other males. These results suggest a connection between male chemical and visual sexual signals, and female assessment of better mates using multimodal sensory signals, even in poor visual environments.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"433-437"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Post-Fission Regeneration and Life-History Traits in the Fissiparous Brittle Star Ophiactis savignyi (Ophiuroidea: Amphilepidida: Ophiactidae). 裂裂海蛇尾蛇麻的裂变后再生和生活史特征（蛇总科：蛇麻总目：蛇麻科）。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs260021

Miki Sakata, Yohei Otomo, Daiki Wakita, Soma Chiyoda, Yasuyuki Kaga, Masanori Okanishi, Toru Miura

{"title":"Post-Fission Regeneration and Life-History Traits in the Fissiparous Brittle Star Ophiactis savignyi (Ophiuroidea: Amphilepidida: Ophiactidae).","authors":"Miki Sakata, Yohei Otomo, Daiki Wakita, Soma Chiyoda, Yasuyuki Kaga, Masanori Okanishi, Toru Miura","doi":"10.2108/zs260021","DOIUrl":"https://doi.org/10.2108/zs260021","url":null,"abstract":"Fissiparity, a form of asexual reproduction, involves the loss of significant body parts followed by regeneration. In echinoderms, this mode of reproduction has been documented in numerous species, particularly among holothurians, asteroids, and ophiuroids. Fissiparous brittle stars typically exhibit six-fold symmetry and restore this body plan by regenerating the missing half of the disk and three arms after fission. However, the detailed regeneration process and its dynamics in natural populations remain poorly understood. Here, we characterized post-fission regeneration in the brittle star Ophiactis savignyi by defining eight stages based on external morphology and histological features. Our observations revealed that, during early disk regeneration, the paired lateral arm primordia developed prior to the central primordium, suggesting that regenerating individuals may transiently pass through a five-armed configuration before re-establishing six-fold symmetry. We further quantified the frequency of each regeneration stage in a wild population and examined its relationships with season and body size. Early regeneration stages were less frequent from winter to spring and among large individuals, indicating that fissiparity is more active during warmer periods and in smaller individuals. In addition, swelling of interradial regions containing gonads was observed in some large individuals, suggesting a size-dependent life-history strategy in which asexual reproduction predominates in smaller individuals and sexual reproduction becomes more prominent with growth.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"455-466"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cryptic Genetic Differentiation of the Cicada Vagitanus terminalis in the South Ryukyu Islands. 南琉球群岛阴道蝉的隐遗传分化。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs260028

Nobuaki Nagata, Toru Oka, Chung-Ping Lin, Teiji Sota

{"title":"Cryptic Genetic Differentiation of the Cicada Vagitanus terminalis in the South Ryukyu Islands.","authors":"Nobuaki Nagata, Toru Oka, Chung-Ping Lin, Teiji Sota","doi":"10.2108/zs260028","DOIUrl":"https://doi.org/10.2108/zs260028","url":null,"abstract":"The biota of the southern part of the Ryukyu Archipelago (South Ryukyu) is considered to have been formed relatively recently by organisms that migrated from Taiwan Island and continental China. However, phylogeographic patterns of insect species in South Ryukyu remain largely unexplored. In this study, we elucidated the intraspecific phylogeny and divergence time of Vagitanus terminalis, a small cicada species distributed from continental China to Taiwan Island and South Ryukyu. We conducted phylogenetic analyses using two mitochondrial and two nuclear gene sequences, and genome-wide DNA sequences and SNPs obtained through MIG-seq. We found that V. terminalis populations from Sichuan in continental China and Taiwan Island were genetically closely related despite the large geographical distance between them. In contrast, in South Ryukyu substantial genetic differentiation was detected between Yaeyama Islands and Miyako Island. The Yaeyama Islands populations were estimated to have diverged from Miyako Island and Taiwan-continental China populations approximately 2.4 million years ago (confidence interval: 1.1-4.0), during Early Pleistocene when the formation of the Ryukyu Archipelago began. These results suggested that colonization to the two island areas in South Ryukyu occurred at different times and via different routes, although precise phylogenetic relationships and divergence times among these populations and Taiwan-continental China populations remain to be clarified through additional taxon sampling and sequence data. Overall, our findings revealed substantial genetic differentiation among non-endemic insect populations in South Ryukyu, including the presence of relict populations with an ancient origin.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"467-474"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Host Species and Meteorological Influences on the Prevalence of Babesia microti (Aconoidasida: Piroplasmida) in Wild Rodents: Insights From a Meta-Analysis in Japan. 宿主物种和气象对野生啮齿动物中微小巴贝斯虫（Aconoidasida: Piroplasmida）流行的影响：来自日本meta分析的见解。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs250107

Hiroyuki Matsuyama, Masahito Hidaka

{"title":"Host Species and Meteorological Influences on the Prevalence of Babesia microti (Aconoidasida: Piroplasmida) in Wild Rodents: Insights From a Meta-Analysis in Japan.","authors":"Hiroyuki Matsuyama, Masahito Hidaka","doi":"10.2108/zs250107","DOIUrl":"10.2108/zs250107","url":null,"abstract":"Rodents play a central role as reservoirs of zoonotic pathogens, yet the ecological and meteorological factors affecting pathogen prevalence remain unclear. In this study, a meta-analysis was used to evaluate the influence of host species and meteorological factors on the prevalence of Babesia microti in two common Japanese field mice, Apodemus speciosus and A. argenteus. The data were collected from seven published studies conducted across Japan. To examine the effects of total annual precipitation, average annual temperature, and host species, generalized linear mixed models were employed. The prevalence of the Hobetsu/Otsu-type B. microti was significantly higher in A. speciosus than in A. argenteus, indicating possible differences in reservoir competence and vector preference by Ixodes ovatus, which mainly infests terrestrial rodents. Conversely, the prevalence of the Kobe-type B. microti showed no significant differences between host species; however, it was negatively correlated with increasing precipitation. These findings suggest that meteorological factors may reflect a behavioral mismatch between the tick vectors, Haemaphysalis longicornis and Ixodes nipponensis, and their Apodemus hosts. One possible explanation for these results is that the vectors for Kobe-type B. microti, such as H. longicornis and I. nipponensis, primarily quest on vegetation, and the frequency of host-vector contact decreases when rodents remain in their burrows during heavy rain. This study provides the first quantitative evidence of host-environment interactions impacting rodent-borne babesiosis in Japan. It underscores the importance of considering meteorological and ecological perspectives when forecasting tick-borne disease risks in the context of climate change.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"475-480"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of High-Altitude Environments on Plumage Lightness (L-value) in Poultry: Melanin-Mediated Mechanisms and Multifactorial Interaction Effects. 高海拔环境对家禽羽毛亮度（l值）的影响：黑色素介导的机制和多因子相互作用

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs260030

Ronghong Li, Min Xiao, Sang Mou, Yuzhen Zhou, Jie Pu, Xiaolin Yang, Zhun Yi, Xilam Yi

{"title":"Effects of High-Altitude Environments on Plumage Lightness (L-value) in Poultry: Melanin-Mediated Mechanisms and Multifactorial Interaction Effects.","authors":"Ronghong Li, Min Xiao, Sang Mou, Yuzhen Zhou, Jie Pu, Xiaolin Yang, Zhun Yi, Xilam Yi","doi":"10.2108/zs260030","DOIUrl":"https://doi.org/10.2108/zs260030","url":null,"abstract":"High-altitude environments expose poultry to low temperature, hypoxia, and strong UV radiation, but how combined environmental gradients shape plumage lightness remains insufficiently resolved. Using Qiangshan cloud chickens from Wenchuan, we analyzed 150 dorsal plumage samples collected along 900-2800 m. Plumage lightness (L-value) was measured by colorimetry, and eumelanin content was quantified by alkaline dissolution spectrophotometry. Five environmental variables (UV index, altitude, mean annual temperature, annual precipitation, and forest coverage) were integrated from field monitoring, meteorological records, and remote sensing data. We combined correlation analysis, hierarchical regression, principal component analysis (PCA), path analysis, and interaction surface modeling to partition direct, indirect, and synergistic effects. L-value was negatively associated with altitude and melanin content, and the melanin-L-value relationship remained stable across altitude strata. PCA summarized environmental variation into PC1 (UV index, altitude, temperature) and PC2 (precipitation, forest coverage), jointly explaining 88.4% of L-value variance. Path analysis showed that melanin exerted a masking effect on the PC1 pathway while partially mediating the PC2 pathway (mediation proportion 76.2%). A significant PC1 × PC2 interaction indicated non-additive control of plumage lightness under combined environmental extremes. These results support a mechanism in which high-altitude stress promotes melanin deposition and darker plumage as a photoprotective and thermoregulatory adaptation, and they highlight the importance of environmental interactions in shaping poultry phenotypic responses.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"481-491"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149195915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Differential Effectiveness of Anti-Predator Defenses in Non-Native Leaf Beetles Against Native Frogs and Lizards. 非本地叶甲虫对本地青蛙和蜥蜴的不同防御效果。

IF 1 4区生物学

Zoological Science Pub Date : 2026-10-01 DOI: 10.2108/zs260009

Uran Sumi, Shinji Sugiura

{"title":"Differential Effectiveness of Anti-Predator Defenses in Non-Native Leaf Beetles Against Native Frogs and Lizards.","authors":"Uran Sumi, Shinji Sugiura","doi":"10.2108/zs260009","DOIUrl":"https://doi.org/10.2108/zs260009","url":null,"abstract":"Predators constitute an important source of biotic resistance influencing the establishment and population increase of non-native species, and the strength of this resistance depends on how effectively predators tolerate or overcome the defenses of non-native prey. In this study, we compared the effectiveness of defenses in the non-native leaf beetle Lema diversipes and its closely related native congener L. decempunctata (Coleoptera: Chrysomelidae) against two native predators: the Japanese tree frog, Dryophytes japonicus (Anura: Hylidae), and the Japanese skink, Plestiodon japonicus (Squamata: Scincidae). Adults of both beetle species secreted chemicals from their elytra when stimulated. To investigate defensive effectiveness, individual adults were provided to predators under laboratory conditions. All adults of both beetle species were attacked and consumed by tree frogs, whereas 93% of L. diversipes and 60% of L. decempunctata were rejected by skinks. These results indicate that the beetles' chemical defenses are more effective against skinks than against tree frogs. Consequently, native tree frogs may exert stronger biotic resistance than native skinks, and tree frogs potentially suppress the population increase of L. diversipes. Overall, our findings show that chemical defense effectiveness varies between predator groups, highlighting the importance of predator diversity in shaping invasion outcomes.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"43 5","pages":"438-445"},"PeriodicalIF":1.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149196937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0