Morphological assessment of the Octopus vulgaris species complex evaluated in light of molecular-based phylogenetic inferences

被引:87
作者
Amor, Michael D. [1 ,2 ]
Norman, Mark D. [2 ]
Roura, Alvaro [1 ]
Leite, Tatiana S. [3 ]
Gleadall, Ian G. [4 ]
Reid, Amanda [5 ]
Perales-Raya, Catalina [6 ]
Lu, Chung-Cheng [2 ,7 ]
Silvey, Colin J. [2 ]
Vidal, Erica A. G. [8 ]
Hochberg, Frederick G. [9 ]
Zheng, Xiaodong [10 ]
Strugnell, Jan M. [1 ]
机构
[1] La Trobe Univ, Dept Ecol Environm & Evolut, Kingsbury Dr, Melbourne, Vic 3086, Australia
[2] Museum Victoria, Sci Dept, 11 Nicholson St, Carlton, Vic 3053, Australia
[3] Univ Fed Rio Grande do Norte UFRN, Dept Oceanog & Limnol, Natal, RN, Brazil
[4] Tohoku Univ, Grad Sch Agr Sci, Int Fisheries Sci Unit, Amamiya 1-1, Sendai, Miyagi 9818555, Japan
[5] Australian Museum, Res Inst, Malacol, 1 William St, Sydney, NSW 2010, Australia
[6] Inst Espanol Oceanog, Ctr Oceanog Canarias, Via Espaldon,Darsena Pesquera PCL8, Santa Cruz De Tenerife 38180, Spain
[7] Natl Chung Hsing Univ, Taichung 40227, Taiwan
[8] Univ Fed Parana UFPR, Ctr Estudos Mar, BR-83255976 Pontal Do, Parana, Brazil
[9] Santa Barbara Museum Nat Hist, Dept Invertebrate Zool, 2559 Puesta del Sol, Santa Barbara, CA USA
[10] Ocean Univ China, Fisheries Coll, 5 Yushan Rd, Qingdao 266003, Peoples R China
基金
日本科学技术振兴机构;
关键词
CEPHALOPODA OCTOPODIDAE; SOUTHERN-OCEAN; CHARACTER DISPLACEMENT; GENE FLOW; MOLLUSCA; SYSTEMATICS; SEA; BIODIVERSITY; PARALARVAE; DIVERGENCE;
D O I
10.1111/zsc.12207
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Cryptic species are common in the ocean, particularly among marine invertebrates such as octopuses. Delineating cryptic species is particularly problematic in octopus taxonomy where the plasticity recorded among taxonomic characters often results in low resolution at the species level. This study investigated the morphological relationships among seven phylogenetic clades (identified using cytochrome c oxidase subunit I) of the broadly distributed Octopus vulgaris species complex and close relatives. Morphological analyses in this study were successful in delimiting O. sinensis, Brazilian O. vulgaris and O. vulgaris sensu stricto, which was congruent with the molecular findings of this study. Analyses based on male morphology were successful in distinguishing 14 of 15 total pairwise comparisons and proved to be a more reliable indicator of species-level relationships in comparison with female morphology. The majority of characters with the greatest discriminatory power were male sexual traits. Significant morphological differences were also recorded among sampling localities of conspecifics, with phenotype showing correlation with local environmental data. The findings of this study support the hypothesis that multiple O. vulgaris-like species are currently being incorrectly treated under a single species name, O. vulgaris. Octopuses being exported globally under the name O. vulgaris are of extremely high fisheries market value and profile. Our findings have potentially significant implications for the naming and conservation of commercially harvested members of this species complex throughout their ranges.
引用
收藏
页码:275 / 288
页数:14
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