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Morphological Description and Phylogenetic Analyses of a New Species of Callistoctopus (Cephalopoda, Octopodidae) from China. DIVERSITY 2022. [DOI: 10.3390/d14121083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A new octopus species, Callistoctopus tenuipes sp. nov., was formally described from the southeastern coastal waters of China using morphological description and molecular analysis methods. C. tenuipes sp. nov. is a small- to moderate-sized octopus, which is characterized by very narrow and long arms. Although it was previously misidentified as the juvenile of Octopus minor (Sasaki, 1920), it can be recognised by spots, gill lamellae count, funnel organ shape, enlarged suckers, and ligula shape. C. tenuipes sp. nov. differs from the small-sized octopus Callistoctopus xiaohongxu, mainly in the gill lamellae count, funnel organ shape, and arm-length index. In the molecular analysis, sequences obtained from the cytochrome c-oxidase subunit I (COI) gene of eight specimens were 590 bp in length. The pairwise Kimura 2-parameter (K2P) genetic distances between Octopodidae species ranged from 8.58 to 23.79% based on the COI gene. The phylogenetic analyses suggested that C. tenuipes sp. nov. belonged to the Callistoctopus clade and may have a close affinity with C. xiaohongxu and O. minor. Moreover, three species delimitation methods all strongly supported C. tenuipes as a separate species.
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Dou C, Muhammad F, Liu L, Gong L, Chen Y, Guo B, Lü Z. Population diversity ofCistopus indicusinferred from mitochondrial DNA (Cytochrome b) variation from China and Vietnam. MOLLUSCAN RESEARCH 2019. [DOI: 10.1080/13235818.2019.1688635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Canfeng Dou
- National Engineering Research Centre of Maricultural Facilities of China, Zhejiang Ocean University, Zhoushan, People’s Republic of China
| | - Faiz Muhammad
- National Engineering Research Centre of Maricultural Facilities of China, Zhejiang Ocean University, Zhoushan, People’s Republic of China
- Centre of Excellence in Marine Biology, University of Karachi, Karachi, Pakistan
| | - Liqin Liu
- National Engineering Research Centre of Maricultural Facilities of China, Zhejiang Ocean University, Zhoushan, People’s Republic of China
| | - Li Gong
- National Engineering Research Centre of Maricultural Facilities of China, Zhejiang Ocean University, Zhoushan, People’s Republic of China
| | - Yongjiu Chen
- National Engineering Research Centre of Maricultural Facilities of China, Zhejiang Ocean University, Zhoushan, People’s Republic of China
| | - Baoying Guo
- National Engineering Research Centre of Maricultural Facilities of China, Zhejiang Ocean University, Zhoushan, People’s Republic of China
| | - Zhenming Lü
- National Engineering Research Centre of Maricultural Facilities of China, Zhejiang Ocean University, Zhoushan, People’s Republic of China
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Allcock AL, Lindgren A, Strugnell J. The contribution of molecular data to our understanding of cephalopod evolution and systematics: a review. J NAT HIST 2014. [DOI: 10.1080/00222933.2013.825342] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Hoving HJT, Perez JAA, Bolstad KSR, Braid HE, Evans AB, Fuchs D, Judkins H, Kelly JT, Marian JEAR, Nakajima R, Piatkowski U, Reid A, Vecchione M, Xavier JCC. The study of deep-sea cephalopods. ADVANCES IN MARINE BIOLOGY 2014; 67:235-359. [PMID: 24880796 DOI: 10.1016/b978-0-12-800287-2.00003-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
"Deep-sea" cephalopods are here defined as cephalopods that spend a significant part of their life cycles outside the euphotic zone. In this chapter, the state of knowledge in several aspects of deep-sea cephalopod research are summarized, including information sources for these animals, diversity and general biogeography and life cycles, including reproduction. Recommendations are made for addressing some of the remaining knowledge deficiencies using a variety of traditional and more recently developed methods. The types of oceanic gear that are suitable for collecting cephalopod specimens and images are reviewed. Many groups of deep-sea cephalopods require taxonomic reviews, ideally based on both morphological and molecular characters. Museum collections play a vital role in these revisions, and novel (molecular) techniques may facilitate new use of old museum specimens. Fundamental life-cycle parameters remain unknown for many species; techniques developed for neritic species that could potentially be applied to deep-sea cephalopods are discussed. Reproductive tactics and strategies in deep-sea cephalopods are very diverse and call for comparative evolutionary and experimental studies, but even in the twenty-first century, mature individuals are still unknown for many species. New insights into diet and trophic position have begun to reveal a more diverse range of feeding strategies than the typically voracious predatory lifestyle known for many cephalopods. Regular standardized deep-sea cephalopod surveys are necessary to provide insight into temporal changes in oceanic cephalopod populations and to forecast, verify and monitor the impacts of global marine changes and human impacts on these populations.
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Affiliation(s)
| | - Jose Angel A Perez
- Centro de Ciências Tecnológicas da Terra e do Mar Universidade do Vale do Itajaí, Itajaí, Santa Catarina, Brazil
| | - Kathrin S R Bolstad
- Institute for Applied Ecology New Zealand, Auckland University of Technology, Auckland, New Zealand
| | - Heather E Braid
- Institute for Applied Ecology New Zealand, Auckland University of Technology, Auckland, New Zealand
| | - Aaron B Evans
- Institute for Applied Ecology New Zealand, Auckland University of Technology, Auckland, New Zealand
| | - Dirk Fuchs
- Freie Universität Berlin, Institute of Geological Sciences, Branch Paleontology, Berlin, Germany
| | - Heather Judkins
- Department of Biological Sciences, University of South Florida St. Petersburg, St. Petersburg, Florida, USA
| | - Jesse T Kelly
- Institute for Applied Ecology New Zealand, Auckland University of Technology, Auckland, New Zealand
| | - José E A R Marian
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Sao Paulo, Brazil
| | - Ryuta Nakajima
- Department of Art and Design, University of Minnesota Duluth, Duluth, Minnesota, USA
| | - Uwe Piatkowski
- GEOMAR, Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - Amanda Reid
- Australian Museum Research Institute, Sydney, New South Wales, Australia
| | - Michael Vecchione
- NMFS National Systematics Laboratory, National Museum of Natural History, Washington, DC, USA
| | - José C C Xavier
- Institute of Marine Research, Department of Life Sciences, University of Coimbra, Coimbra, Portugal; British Antarctic Survey, NERC, Cambridge, United Kingdom
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Cheng R, Zheng X, Ma Y, Li Q. The complete mitochondrial genomes of two octopods Cistopus chinensis and Cistopus taiwanicus: revealing the phylogenetic position of the genus Cistopus within the order Octopoda. PLoS One 2013; 8:e84216. [PMID: 24358345 PMCID: PMC3866134 DOI: 10.1371/journal.pone.0084216] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 11/13/2013] [Indexed: 11/23/2022] Open
Abstract
In the present study, we determined the complete mitochondrial DNA (mtDNA) sequences of two species of Cistopus, namely C. chinensis and C. taiwanicus, and conducted a comparative mt genome analysis across the class Cephalopoda. The mtDNA length of C. chinensis and C. taiwanicus are 15706 and 15793 nucleotides with an AT content of 76.21% and 76.5%, respectively. The sequence identity of mtDNA between C. chinensis and C. taiwanicus was 88%, suggesting a close relationship. Compared with C. taiwanicus and other octopods, C. chinensis encoded two additional tRNA genes, showing a novel gene arrangement. In addition, an unusual 23 poly (A) signal structure is found in the ATP8 coding region of C. chinensis. The entire genome and each protein coding gene of the two Cistopus species displayed notable levels of AT and GC skews. Based on sliding window analysis among Octopodiformes, ND1 and DN5 were considered to be more reliable molecular beacons. Phylogenetic analyses based on the 13 protein-coding genes revealed that C. chinensis and C. taiwanicus form a monophyletic group with high statistical support, consistent with previous studies based on morphological characteristics. Our results also indicated that the phylogenetic position of the genus Cistopus is closer to Octopus than to Amphioctopus and Callistoctopus. The complete mtDNA sequence of C. chinensis and C. taiwanicus represent the first whole mt genomes in the genus Cistopus. These novel mtDNA data will be important in refining the phylogenetic relationships within Octopodiformes and enriching the resource of markers for systematic, population genetic and evolutionary biological studies of Cephalopoda.
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Affiliation(s)
- Rubin Cheng
- Fisheries College, Ocean University of China, Qingdao, China
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaodong Zheng
- Fisheries College, Ocean University of China, Qingdao, China
- Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, China
- * E-mail:
| | - Yuanyuan Ma
- Fisheries College, Ocean University of China, Qingdao, China
| | - Qi Li
- Fisheries College, Ocean University of China, Qingdao, China
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