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Morphology is not a reliable taxonomic tool for the genus Lernaea: molecular data and experimental infection reveal that L. cyprinacea and L. cruciata are conspecific
Hua, Cong J.1,2,3; Zhang, Dong1,2,4; Zou, Hong1,2; Li, Ming1,2; Jakovlic, Ivan5; Wu, Shan G.1,2; Wang, Gui T.1,2,4; Li, Wen X.1,2
2019-12-11
Source PublicationPARASITES & VECTORS
ISSN1756-3305
Volume12Issue:1Pages:13
Abstract

Background: Species belonging to the genus Lernaea are cosmopolitan parasites that can infect many different freshwater fish hosts. Due to a high degree of morphological intraspecific variability and high levels of interspecific similarities, their classification is extremely difficult and controversial. Although the suitability of the shape of cephalic horns has been questioned decades ago by some experimental infection studies, this character still plays the central role in the identification of Lernaea spp. Methods: We used the nominal species Lernaea cyprinacea and Lernaea cruciata to test the hypothesis that the shape of the anchor can exhibit host-induced morphological variability, and that the two taxa may be synonymous. Results: We examined 517 wild or farmed specimens of five host fish species (four cyprinids and a mosquitofish), and found that all 16 parasite specimens collected from mosquitofish could be morphologically identified as L. cruciata, whereas the remaining 25 parasite specimens were all identified as L. cyprinacea. We experimentally infected goldfish and mosquitofish specimens with offspring (copepodids) of a single L. cyprinacea specimen: the adult parasites from goldfish were morphologically identified as L. cyprinacea, and those from mosquitofish as L. cruciata. We then used molecular data to corroborate that all these specimens are conspecific. Conclusions: Our results suggest that L. cyprinacea and L. cruciata may be synonyms, misidentified as different species as a result of host-induced morphological variation. Given the current shortage of molecular data for the genus Lernaea, in order to resolve the taxonomy of this genus (determine the exact number of species), future studies should aim to sequence as much molecular data as possible, and conduct further experimental infections.

KeywordLernaea Parasitic copepods Phenotypic plasticity Molecular taxonomy
DOI10.1186/s13071-019-3831-y
Indexed BySCI
Language英语
WOS Research AreaParasitology ; Tropical Medicine
WOS SubjectParasitology ; Tropical Medicine
WOS IDWOS:000513825800001
WOS KeywordCOMPLETE MITOCHONDRIAL GENOME ; PHENOTYPIC PLASTICITY ; COPEPODA LERNAEIDAE ; FISH ; PARASITE ; SUSCEPTIBILITY ; ECTOPARASITES ; MORPHOMETRICS ; CAPSALIDAE ; PHYLOGENY
PublisherBMC
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35193
Collection鱼类生物学及渔业生物技术研究中心_期刊论文
Corresponding AuthorLi, Wen X.
Affiliation1.Chinese Acad Sci, Minist Agr, Key Lab Aquaculture Dis Control, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
3.Jianghan Univ, Sch Med, Wuhan Inst Biomed Sci, Wuhan 430056, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Biotransduct Lab, Wuhan 430075, Peoples R China
Recommended Citation
GB/T 7714
Hua, Cong J.,Zhang, Dong,Zou, Hong,et al. Morphology is not a reliable taxonomic tool for the genus Lernaea: molecular data and experimental infection reveal that L. cyprinacea and L. cruciata are conspecific[J]. PARASITES & VECTORS,2019,12(1):13.
APA Hua, Cong J..,Zhang, Dong.,Zou, Hong.,Li, Ming.,Jakovlic, Ivan.,...&Li, Wen X..(2019).Morphology is not a reliable taxonomic tool for the genus Lernaea: molecular data and experimental infection reveal that L. cyprinacea and L. cruciata are conspecific.PARASITES & VECTORS,12(1),13.
MLA Hua, Cong J.,et al."Morphology is not a reliable taxonomic tool for the genus Lernaea: molecular data and experimental infection reveal that L. cyprinacea and L. cruciata are conspecific".PARASITES & VECTORS 12.1(2019):13.
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