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Taxonomy and DNA barcoding in genera Cavolinia and Diacavolinia from the Indian Ocean and Northwest Pacific Ocean
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Haitao Li1, Jing He1, Chongchen Jiang1, Zhiyun Chen2, Peng Zhou1
Haiyang Xuebao | 2020, 42(4) : 79 - 86
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Haiyang Xuebao | 2020, 42(4): 79-86
• Marine Biology •
Taxonomy and DNA barcoding in genera Cavolinia and Diacavolinia from the Indian Ocean and Northwest Pacific Ocean
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Haitao Li1, Jing He1, Chongchen Jiang1, Zhiyun Chen2, Peng Zhou1
Affiliations
  • 1 South China Sea Environmental Monitoring Center, Ministry of Natural Resources of the People's Republic of China, Guangzhou 510300, China
  • 2 Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Published: 2020-04-25 doi: 10.3969/j.issn.0253-4193.2020.04.009
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Some so-called circumglobal and/or circumpolar marine species are proved to be complexes of cryptic species with restricted distributions by molecular analyses. These phenomena imply that marine species diversity has been underestimated. In this study we use shell morphological characteristics together with mitochondrial COI and 16S rRNA gene sequences in order to study the taxonomy and to identify species of genera Cavolinia and Diacavolinia in family Cavoliniidae from the Indian Ocean and Northwest Pacific Ocean. Our results showed that the species delimitation of Diacavolinia is not supported by molecular analyses, those morphospecies (D. grayi, D. vanutrechti, D. pacifica, D. elegans, D. angulosa, etc.) with distinct morphology from northwestern Pacific are a single species, namely D. longirostris. The subdivision of subspecies and/or forms for C. uncinata could not be confirmed by DNA evidence. Phylogenetic analysis of COI revealed two independent geographical lineages for C. uncinata, C. globulosa and D. longirostris respectively, suggesting that these morphspecies may harbour cryptic diversity. Nuclear mitochondrial pseudogene sequences of COI were detected from most individuals of D. longirostris, which can affect the analysis of DNA barcoding.

Cavolinia  /  Diacavolinia  /  taxonomy  /  COI  /  16S rRNA
Haitao Li, Jing He, Chongchen Jiang, Zhiyun Chen, Peng Zhou. Taxonomy and DNA barcoding in genera Cavolinia and Diacavolinia from the Indian Ocean and Northwest Pacific Ocean[J]. Haiyang Xuebao, 2020 , 42 (4) : 79 -86 . DOI: 10.3969/j.issn.0253-4193.2020.04.009
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Article Info
doi: 10.3969/j.issn.0253-4193.2020.04.009
  • Receive Date：2019-05-15
  • Online Date：2026-03-26
  • Published：2020-04-25
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History
  • Received：2019-05-15
  • Revised：2019-06-11
Funding
Affiliations
    1 South China Sea Environmental Monitoring Center, Ministry of Natural Resources of the People's Republic of China, Guangzhou 510300, China
    2 Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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