Further Insights on the Genetic Structure and Connectivity in Octopus Vulgaris (mollusca, Cephalopoda) Inferred by Mitochondrial Coi Sequences
نویسنده
چکیده
The genetic variability of the COI gene was studied in the common octopus, Octopus vulgaris Cuvier, 1797. A total of 222 individuals from 7 sampling sites were analysed with the aim of elucidating patterns of genetic variation along the coasts of Sardinia (Western Mediterranean). A total of 17 different haplotypes were identified with four principal haplotypes recorded in all locations. The pairwise Fst and AMOVA revealed a high gene flow and the lack of significant genetic differentiation among populations. All COI sequences were compared with those available in GenBank for the species; the results obtained show a high sequence divergence among O. vulgaris from different geographic locations and emphasize the need for more detailed phylogeographic and/or taxonomic studies to exclude the presence of cryptic species.
منابع مشابه
Phylogeographical Analysis of Octopus Vulgaris (mollusca, Cephalopoda) in the Mediterranean: Insights from the Coi Mitochondrial Gene
This work reports a genetic data of Octopus vulgaris, marine species of high commercial value, from nineteen localities of Atlantic, Mediterranean and the Adriatic regions. We used mitochondrial DNA cytochrome c oxidase subunit I (COI) gene to investigate the genetic structure of common octopus. Our results indicated a significant genetic structuring in the study area (Phi = 0.136, P <0.001) an...
متن کاملPrey-handling behaviour of Octopus vulgaris (Mollusca, Cephalopoda) on Bivalve preys.
This study examines the ability of Octopus vulgaris to prey on bivalve molluscs showing that octopuses exhibited the same behavioural pattern irrespective of the prey species. When the initial pulling method did not result efficient octopuses skipped to drilling accompanied by an increase in the handling time. A complete behavioural repertoire of O. vulgaris in handling bivalve preys is also gi...
متن کاملOctopus vulgaris (Cuvier, 1797) in the Mediterranean Sea: Genetic Diversity and Population Structure.
The common octopus, Octopus vulgaris Cuvier 1797, is a largely exploited cephalopod species in the Mediterranean Sea and the Atlantic Ocean, as well as along the coasts of Africa, Brazil and Japan, where its taxonomic identity is still debated. The assessment of its genetic structure is a pressing need to correctly manage the resource and to avoid overfishing and collapsing of local stocks. Her...
متن کاملDiet Composition and Variability of Wild Octopus vulgaris and Alloteuthis media (Cephalopoda) Paralarvae: a Metagenomic Approach
The high mortality of cephalopod early stages is the main bottleneck to grow them from paralarvae to adults in culture conditions, probably because the inadequacy of the diet that results in malnutrition. Since visual analysis of digestive tract contents of paralarvae provides little evidence of diet composition, the use of molecular tools, particularly next generation sequencing (NGS) platform...
متن کاملTranscriptome Analysis of the Octopus vulgaris Central Nervous System
BACKGROUND Cephalopoda are a class of Mollusca species found in all the world's oceans. They are an important model organism in neurobiology. Unfortunately, the lack of neuronal molecular sequences, such as ESTs, transcriptomic or genomic information, has limited the development of molecular neurobiology research in this unique model organism. RESULTS With high-throughput Illumina Solexa sequ...
متن کامل