IOCAS-IR  > 海洋生物分类与系统演化实验室
In the Asia-Pacific region, the COI DNA test revealed the divergence of the bivalve mollusc Mactra chinensis into three species; can these species be distinguished using shell coloration and sperm structure?
Reunov, Arkadiy1,2; Lutaenko, Konstantin2; Vekhova, Evgenia2; Zhang, Junlong3; Zakharov, Evgeny4; Sharina, Svetlana2,5; Alexandrova, Yana2; Reunova, Yulia2; Akhmadieva, Anna2; Adrianov, Andrey2,5
2021-12-01
Source PublicationHELGOLAND MARINE RESEARCH
ISSN1438-387X
Volume75Issue:1Pages:19
Corresponding AuthorReunov, Arkadiy(areunov@stfx.ca)
AbstractAccording to COI DNA barcoding testing, the marine bivalve mollusc Mactra chinensis, which is native to the Asia-Pacific region, diverged into three species. These species were preliminary characterized as M. chinensis COI clade I, M. chinensis COI clade II and M. chinensis COI clade III. To find out whether it is possible to morphologically distinguish samples representing genetic clades, we examined the color of the shells and the structure of the spermatozoa. It was found that the number of detected coloration types exceeds the number of detected species. In addition, it was shown that individuals belonging to the same genetic clade can have shells of different colors. Consequently, it is impossible to choose one type of shell coloration as a species-specific trait. For sperm, the sperm morphological patterns found in each of the three species are consistent with the M. chinensis sperm model described in previous reports. However, the single sperm variant is also not applicable to discriminate between species derived from M. chinensis, since heterogeneous variants of spermatozoa differing in the length of the acrosomal rod were found. We hypothesized that genetic divergence of species could cause a shift towards predominance of one of the sperm variants, and that species-specific sperm morphs could be quantitatively dominant in molluscs belonging to different clades. However, the dominant sperm morphs were the same in COI clade I and COI clade III. Thus, dominant sperm morphs are useless as species-specific traits. However, shell color and sperm parameters are specific to different geographic regions, and it seems that unique environmental factors can determine shell color and sperm morphology. As a result, both shells and spermatozoa can be used to distinguish the geographical forms of M. chinensis, regardless of the belonging of the forms to a particular genetic clade. Here we propose the introduction of geographic identifiers, in which the shell color and parameters of sperm sets are used as morphological criteria to determine the geographical origin of mollusc specimens belonging to the M. chinensis species complex.
KeywordPacific Ocean Mactra chinensis COI DNA barcoding Shell coloration Sperm structure
DOI10.1186/s10152-021-00553-0
Indexed BySCI
Language英语
Funding ProjectFEB RAS Grants[12-I-P30-10] ; FEB RAS Grants[12-I-P6-04] ; Russian Government[11. G 34.31.0010] ; Program for Fundamental Research The Far East[15-I-6-007_o] ; International Science Partnership Program of the Chinese Academy of Science[133137KYSB20200002] ; Special Funds for the Young Scholars of Taxonomy of the Chinese Academy of Sciences[ZSBR-009]
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectMarine & Freshwater Biology ; Oceanography
WOS IDWOS:000712965000001
PublisherBMC
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/177159
Collection海洋生物分类与系统演化实验室
Corresponding AuthorReunov, Arkadiy
Affiliation1.St Francis Xavier Univ, Dept Biol, Antigonish, NS B2G 2W5, Canada
2.Russian Acad Sci, Natl Sci Ctr Marine Biol, Far Eastern Branch, Vladivostok 690041, Russia
3.Chinese Acad Sci, Inst Oceanol, Dept Marine Organism Taxon & Phylogeny, 7 Nanhai Rd, Qingdao 266071, Peoples R China
4.Canadian Ctr DNA Barcoding, Biodivers Inst Ontario, Guelph, ON, Canada
5.Far Eastern Fed Univ, Sch Nat Sci, 10 Ajax Bay, Vladivostok 690950, Russia
Recommended Citation
GB/T 7714
Reunov, Arkadiy,Lutaenko, Konstantin,Vekhova, Evgenia,et al. In the Asia-Pacific region, the COI DNA test revealed the divergence of the bivalve mollusc Mactra chinensis into three species; can these species be distinguished using shell coloration and sperm structure?[J]. HELGOLAND MARINE RESEARCH,2021,75(1):19.
APA Reunov, Arkadiy.,Lutaenko, Konstantin.,Vekhova, Evgenia.,Zhang, Junlong.,Zakharov, Evgeny.,...&Adrianov, Andrey.(2021).In the Asia-Pacific region, the COI DNA test revealed the divergence of the bivalve mollusc Mactra chinensis into three species; can these species be distinguished using shell coloration and sperm structure?.HELGOLAND MARINE RESEARCH,75(1),19.
MLA Reunov, Arkadiy,et al."In the Asia-Pacific region, the COI DNA test revealed the divergence of the bivalve mollusc Mactra chinensis into three species; can these species be distinguished using shell coloration and sperm structure?".HELGOLAND MARINE RESEARCH 75.1(2021):19.
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