Contributions to Zoology最新文献_第7页

Evolutionary history of species of the firefly subgenus Hotaria (Coleoptera, Lampyridae, Luciolinae, Luciola) inferred from DNA barcoding data 基于DNA条形码数据的火萤亚属(鞘翅目，Lampyridae, Luciolinae, Luciola)种的进化历史

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-10-17 DOI: 10.1163/18759866-20191420

T. Han, Seung Hyun Kim, H. Yoon, I. Park, Haechul Park

{"title":"Evolutionary history of species of the firefly subgenus Hotaria (Coleoptera, Lampyridae, Luciolinae, Luciola) inferred from DNA barcoding data","authors":"T. Han, Seung Hyun Kim, H. Yoon, I. Park, Haechul Park","doi":"10.1163/18759866-20191420","DOIUrl":"https://doi.org/10.1163/18759866-20191420","url":null,"abstract":"The firefly subgenus Hotaria sensu lato of the genus Luciola currently includes four morphospecies: L. (H.) parvula, L. (H.) unmunsana, L (H.) papariensis, and L. (H.) tsushimana. The latter three are taxonomically controversial based on both morphological and molecular data. We examined the phylogenetic relationships and evolutionary history of the species and related congeners using partial COI gene sequences (DNA barcoding). Our phylogenetic analyses consistently supported the monophyly of Hotaria sensu lato, but did not resolve the generic rank. The two types of L. (H.) parvula in Japan can be considered distinct species that arose by pseudocryptic speciation during the Miocene, with substantial genetic divergence (15.41%). Three morphospecies, L. (H.) unmunsana, L (H.) papariensis, and L. (H.) tsushimana, split into several polyphyletic or paraphyletic groups, forming entangled species groups. They are considered an incipient group that is distinguishable genetically but not morphologically, with evidence for recent allopatric speciation events corresponding to geologic events and sea-level changes during the Pliocene and Pleistocene. Group III of L. (H.) unmunsana collected from the Jeolla region is a new taxon.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191420","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46564795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 6

Systematic position and composition of Merodon nigritarsis and M. avidus groups (Diptera, Syrphidae) with a description of four new hoverflies species 黑齿龙和阿维杜氏虫群的系统位置和组成（双翅目，蝇科）及四种新气垫蝇的描述

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-10-12 DOI: 10.1163/18759866-20191414

L. Likov, A. Vujić, N. K. Tubić, M. Đan, N. Veličković, S. Rojo, C. Pérez‐Bañón, Sanja Veselić, A. Barkalov, R. Hayat, S. Radenković

引用次数: 13

The role of allopatric speciation and ancient origins of Bathynellidae (Crustacea) in the Pilbara (Western Australia): two new genera from the De Grey River catchment Pilbara（西澳大利亚）Bathynellidae（甲壳纲）的异地物种形成和古代起源的作用：来自De Grey河流域的两个新属

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-10-03 DOI: 10.1163/18759866-20191412

G. Perina, A. Camacho, J. Huey, P. Horwitz, A. Koenders

{"title":"The role of allopatric speciation and ancient origins of Bathynellidae (Crustacea) in the Pilbara (Western Australia): two new genera from the De Grey River catchment","authors":"G. Perina, A. Camacho, J. Huey, P. Horwitz, A. Koenders","doi":"10.1163/18759866-20191412","DOIUrl":"https://doi.org/10.1163/18759866-20191412","url":null,"abstract":"The stygofaunal family of Bathynellidae, is an excellent group to study the processes that shape diversity and distribution, since they have unknown surface or marine relatives, high level of endemism, and limited dispersal abilities. Recent research on Bathynellidae in Western Australia (Pilbara) has uncovered new taxa with unexpected distributions and phylogenetic relationships, but the biogeographical processes that drive their diversification on the continent are still unclear. By exploring the diversity, distribution, and divergence time of Bathynellidae in a setting such as the perched and isolated aquifers of the Cleaverville Formation in the north of the De Grey River catchment (Pilbara), we aim to test the hypothesis that vicariance has shaped the distribution of this family, specifically if one or multiple vicariant events were involved. We analysed the specimens collected from perched water in different plateaus of the Cleaverville Formation, combining morphological and molecular data from mitochondrial and nuclear genes. We described two new species and genera (Anguillanella callawaensis gen. et sp. nov. and Muccanella cundalinensis gen. et sp. nov.), and two additional taxa are recognised using morphology and/or Automatic Barcode Gap Discovery and Poisson Tree Processes species delimitation methods. New genera and species result restricted to isolate perched aquifers on single plateaus and their distributions, phylogenetic relationships, and divergence time estimates support multiple vicariant events and ancient allopatric speciation.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191412","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45491880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 6

Nuptial feeding and genital coupling of Neopanorpa scorpionflies (Insecta: Mecoptera: Panorpidae) with notal organs of various lengths 不同长度鼻器官的新蝎蛉(昆虫纲:甲翅目:全景科)的婚食和生殖偶联

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-10-03 DOI: 10.1163/18759866-20191409

Xin Tong, B. Hua

{"title":"Nuptial feeding and genital coupling of Neopanorpa scorpionflies (Insecta: Mecoptera: Panorpidae) with notal organs of various lengths","authors":"Xin Tong, B. Hua","doi":"10.1163/18759866-20191409","DOIUrl":"https://doi.org/10.1163/18759866-20191409","url":null,"abstract":"\u0000Neopanorpa, the second largest genus in Panorpidae, is mainly characterized by the well-developed notal organ on male tergum III. However, it remains largely unknown how the length of the notal organ influences the nuptial feeding behaviour of Neopanorpa. Here, we investigated the nuptial feeding by comparing the morphology of mating-related structures and the genital coupling of a) Neopanorpa lui Chou & Ran, 1981 with a weakly-developed notal organ, b) N. carpenteri\u0000Cheng, 1957 with a medium-sized notal organ, and c) N. longiprocessa\u0000Hua & Chou, 1997 with an extremely elongated notal organ. The couples of N. lui and N. carpenteri maintain an intermittent mouth-to-mouth mode but do not exchange any edible food. After that the males secrete a salivary mass onto the surface as a nuptial gift, which is distinctly larger in N. carpenteri than in N. lui. Correspondingly, the male salivary glands are more developed in N. carpenteri than in N. lui. Males of N. longiprocessa bear very short salivary glands corresponding to a coercive mating tactic. The genital couplings are similar among the three species of Neopanorpa. The paired hypovalves of males are used to control the cerci of females. The prominent basal processes of male gonostyli grasp the posterior portion of the female medigynium across the intersegmental membrane. The male aedeagus physically couples with the female medigynium to ensure the male phallotreme to connect to the female copulatory pore. The influence of the notal organ length on the nuptial feeding behaviour of Neopanorpa is briefly discussed.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191409","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48131473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 7

Range sizes of groundwater amphipods (Crustacea) are not smaller than range sizes of surface amphipods: a case study from Iran 地下水片脚类（甲壳纲）的范围大小不小于地表片脚类的范围大小：以伊朗为例

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-10-03 DOI: 10.1163/18759866-20191418

Somayeh Esmaeili-Rineh, Mahmoud Mamaghani-Shishvan, C. Fišer, Vahid Akmali, N. Najafi

{"title":"Range sizes of groundwater amphipods (Crustacea) are not smaller than range sizes of surface amphipods: a case study from Iran","authors":"Somayeh Esmaeili-Rineh, Mahmoud Mamaghani-Shishvan, C. Fišer, Vahid Akmali, N. Najafi","doi":"10.1163/18759866-20191418","DOIUrl":"https://doi.org/10.1163/18759866-20191418","url":null,"abstract":"The connectivity of groundwater aquifers is lower compared to surface waters. Consequently, groundwater species are expected to have smaller distributional ranges than their surface relatives. Molecular taxonomy, however, unveiled that many species comprise complexes of morphologically cryptic species, with geographically restricted distributional ranges in subterranean as well as in surface waters. Hence, the range sizes of surface and groundwater species might be more similar in size than hitherto thought. We tested this hypothesis by comparing the range size of surface amphipods of the genus Gammarus and subterranean amphipods of the genus Niphargus in Iran. We re-analyzed the taxonomic structure of both genera using two unilocus species delimitation methods applied to a fragment of the COI mitochondrial marker, to identify molecular operational taxonomic units (MOTUs), and assessed the maximum linear extent (MLE) of the ranges of MOTUs from both genera. Genus Gammarus comprised 44–58 MOTUs while genus Niphargus comprised 20–22 MOTUs. The MLEs of the two genera were not significantly different, regardless the delimitation method applied. The results remained unchanged also after exclusion of single site MOTUs. We tentatively conclude that in this case there is no evidence to consider that groundwater species are geographically more restricted than surface species.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191418","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47567615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 8

Phylogeny and systematic revision of the helicarionid semislugs of eastern Queensland (Stylommatophora, Helicarionidae) 昆士兰东部半突螺旋虫的系统发育和系统修正（柱孔目，螺旋虫科）

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-10-03 DOI: 10.1163/18759866-20191416

I. Hyman, F. Köhler

{"title":"Phylogeny and systematic revision of the helicarionid semislugs of eastern Queensland (Stylommatophora, Helicarionidae)","authors":"I. Hyman, F. Köhler","doi":"10.1163/18759866-20191416","DOIUrl":"https://doi.org/10.1163/18759866-20191416","url":null,"abstract":"The helicarionid fauna of southeastern to mid-eastern Queensland is dominated by a group of semislugs with moderately reduced shells belonging to genera Fastosarion, Eungarion, Stanisicarion, Dimidarion, Macularion and Hymanarion. We comprehensively revise their systematic classification using comparative morpho-anatomy and mitochondrial phylogenetics, and demonstrate that these genera combined form a well-differentiated and monophyletic radiation. In our mitochondrial phylogeny, this radiation is divided into three main clades that are statistically well supported. One clade is also well defined in terms of diagnostic morpho-anatomical characters, but we could not identify diagnostic characters for the other two clades due to considerable levels of morpho-anatomical variation. We propose accepting only two genera, Fastosarion (with junior synonyms Eungarion, Dimidarion, and Hymanarion) and Stanisicarion (with junior synonym Macularion). Both genera represent mutually monophleytic sister taxa that can consistently be distinguished by the presence or absence of a penial verge that is fused to the penial wall and by egg shape. We also synonymise Fastosarion ameyi with F. aquavitae, F. schelli with F. helenkingae, Dimidarion peterbrocki and D. slatyeri with F. alyssa, Stanisicarion virens with S. freycineti. Revised species descriptions are presented for Fastosarion alyssa, F. aquavitae, F. brazieri, F. comerfordae, F. griseolus, F. hannianus, F. helenkingae, F. mcdonaldi, F. minerva, F. paluma, F. papillosus, F. pustulosus, F. superbus, Stanisicarion aquila and S. freycineti. Nine new species, Fastosarion deensis, F. ephelis, F. insularis, F. katatonos, F. longimentula, F. rowani, F. sarina, F. tuljun and Stanisicarion wolvi are described, bringing the total number of accepted species to 24.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191416","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41726320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 9

Specific damage recognised on land snail shells as a tool for studying predation intensity: differences related to habitat and predator types 作为研究捕食强度的工具，陆地蜗牛壳上的特定损伤：与栖息地和捕食者类型有关的差异

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-09-24 DOI: 10.1163/18759866-20191402

T. Němec, M. Horsák

{"title":"Specific damage recognised on land snail shells as a tool for studying predation intensity: differences related to habitat and predator types","authors":"T. Němec, M. Horsák","doi":"10.1163/18759866-20191402","DOIUrl":"https://doi.org/10.1163/18759866-20191402","url":null,"abstract":"Shell formation is the main defensive strategy against predation for the majority of snails. Therefore, various predators have had to develop a variety of techniques how to overcome this barrier. As shells can persist in a calcium-rich environment for a long time, specific external or internal traces on shells left by predators indicate whether and who killed the snail. Based on litter samples collected at 30 sites of five different habitat types, the intensity and type of predation were assessed. The minimal predation rate varied between 0.0 and 21%, with an average of 8%. The highest rate was observed at limestone steppes, on average 15%. Beetles were found to be the most common predators of snails; however, predation by snails was more common in calcareous fens. Predation by some vertebrates and dipteran flies was also recognised. To test the role of mouth barriers as a means to reduce predation by carabid beetles that break the shell from an aperture, we analysed the predation rate separately on adult and juvenile shells using 24 populations of the steppe snail Granaria frumentum (Draparnaud, 1801). As expected, carabid beetles chiefly preferred juveniles compared to adult shells (Wilcoxon test, p < 0.001). On the contrary, the parasitoid fly Pherbellia limbata (Meigen, 1830) and Drilus beetles preferred adults. We found that predation by carabid beetles positively increased with prey abundance (R2 = 42.8%, p = 0.021), while no relation was observed for the parasitoid (p = 0.703), likely due to their feeding specialisation.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191402","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44464489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 14

A review of Caribbean Copepoda associated with reef-dwelling cnidarians, echinoderms and sponges 加勒比桡足类与礁栖刺胞动物、棘皮动物和海绵动物的研究进展

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-09-24 DOI: 10.1163/18759866-20191411

O. A. Korzhavina, B. Hoeksema, V. Ivanenko

{"title":"A review of Caribbean Copepoda associated with reef-dwelling cnidarians, echinoderms and sponges","authors":"O. A. Korzhavina, B. Hoeksema, V. Ivanenko","doi":"10.1163/18759866-20191411","DOIUrl":"https://doi.org/10.1163/18759866-20191411","url":null,"abstract":"This review of copepod crustaceans associated with reef-dwelling cnidarians, sponges and echinoderms of the Greater Caribbean is based on published records, systematically arranged by the classification of symbiotic copepods and their hosts, sampling sites, coordinates, depth and date of sampling, literature sources, and three recent surveys (Cuba, St. Eustatius in the Eastern Caribbean and Curaçao in the Southern Caribbean). This resulted in totals of 532 records of 115 species of symbiotic copepods (47 genera, 17 families, three orders) hosted by 80 species of invertebrates, representing scleractinians (47%), octocorals (9%), echinoderms (3%), and sponges (1%). Among ten Caribbean ecoregions, the Greater Antilles (with 64 species of symbiotic copepods) as well as the Southern and Eastern Caribbean (with 46 and 17 species of copepods, respectively) are the most studied and best represented, whereas only six species of copepods are known from Bermuda, one from Southwestern Caribbean and none from the Gulf of Mexico. The absence of poecilostomatoid copepods (Anchimolgidae, Rhynchomolgidae and Xarifidae) on Caribbean stony corals as noted by Stock (1988) is confirmed. The results indicate that the diversity and ecology of Caribbean symbiotic copepods are still poorly investigated.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191411","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43510958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 13

The evolutionary history of the white wagtail species complex, (Passeriformes: Motacillidae: Motacilla alba) 白鹡鸰种群的进化史(过目目:摇尾科:白摇尾)

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-07-11 DOI: 10.1163/18759866-20191404

M. Shirazinejad, M. Aliabadian, O. Mirshamsi

{"title":"The evolutionary history of the white wagtail species complex, (Passeriformes: Motacillidae: Motacilla alba)","authors":"M. Shirazinejad, M. Aliabadian, O. Mirshamsi","doi":"10.1163/18759866-20191404","DOIUrl":"https://doi.org/10.1163/18759866-20191404","url":null,"abstract":"The white wagtail (Motacilla alba) species complex with its distinctive plumage in separate geographical areas can serve as a model to test evolutionary hypotheses. Its extensive variety in plumage, despite the genetic similarity between taxa, and the evolutionary events connected to this variety are poorly understood. Therefore we sampled in the breeding range of the white wagtail: 338 individuals were analyzed from 74 areas in the Palearctic and Mediterranean. We studied the white wagtail complex based on two mitochondrial DNA markers to make inferences about the evolutionary history. Our phylogenetic trees highlight mtDNA sequences (ND2, CR), and one nuclear marker (CHD1Z), which partly correspond to earlier described clades: the northern Palearctic (clade N); eastern and central Asia (clade SE); south-western Asia west to the British Isles (clade SW); and Morocco (clade M). The divergence of all clades occurred during the Pleistocene. We also used ecological niche modelling for three genetic lineages (excluding clade M); results showed congruence between niche and phylogenetic divergence in these clades. The results of the white wagtail ancestral area reconstruction showed the influence of dispersal on the distribution and divergence of this complex species. The most important vicariance event for the white wagtail complex may have been caused by the Gobi and Taklamakan deserts. We conclude that the ancestral area of the white wagtail complex was probably in the Mediterranean, with its geography having a considerable effect on speciation processes.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191404","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41611043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 1

Does polyxenous symbiosis promote sympatric divergence? A morphometric and phylogeographic approach based on Oxydromus okupa (Annelida, Polychaeta, Hesionidae) 多异种共生会促进同域分化吗？一种基于奥库帕Oxydromus okupa的形态计量学和系统地理学方法

IF 2.2 2区生物学

Contributions to Zoology Pub Date : 2019-06-26 DOI: 10.1163/18759866-20191403

Miguel A. Meca, P. Drake, Daniel Martin

{"title":"Does polyxenous symbiosis promote sympatric divergence? A morphometric and phylogeographic approach based on Oxydromus okupa (Annelida, Polychaeta, Hesionidae)","authors":"Miguel A. Meca, P. Drake, Daniel Martin","doi":"10.1163/18759866-20191403","DOIUrl":"https://doi.org/10.1163/18759866-20191403","url":null,"abstract":"The polychaete Oxydromus okupa lives in association with the bivalves Scrobicularia plana and Macomopsis pellucida in the intertidal of Río San Pedro (CI = Cádiz Intertidal) and adjacent to CHipiona (CH) harbour, and in the subtidal of the Bay of Cádiz (CS = Cádiz Subtidal). We analyse these populations morphometrically, ecologically (including infestation characteristics) and genetically (intertidal populations, 16S and ITS-1 genes). We consider “host”, “environment” and the combined “host and environment” as possible factors of interpopulation variability. Morphometry revealed three well-defined clusters for CI, CH and CS, showing intergroup phenotypic differences ranging from 35 to 50%. Hosts shell lengths ranged between 26 and 36 mm for S. plana and 20 and 28 mm for M. pellucida. The infestation of small M. pellucida by juvenile O. okupa suggests they show an active size segregation behaviour. The intertidal seems to be less favourable (infestation rate <25% vs. up to 65% in the subtidal), and did not show recent bottleneck events. Overall, CI and CH were genetically homogeneous, but showed a significant divergence (one dominant haplotype in each host species), suggesting host shift as being a soft barrier to gene flow. Most characters related with host-entering varied among populations, suggesting symbiotic behaviour to play a key role in reducing panmixia and leading to the initial phases of a speciation process in sympatric symbiotic populations. Polyxeny and symbiotic behaviour in O. okupa seem thus to be underlying mechanisms contributing to its great phenotypic variety, marked ecological differences, and genetic divergence.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1163/18759866-20191403","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46266777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 5