Genetic evidence of the presence of<i>Octopus mimus</i>in the artisanal fisheries of octopus in Santa Elena Peninsula, Ecuador

Pliego-Cárdenas, Ricardo; Flores, Luis; Markaida, Unai; Barriga-Sosa, Irene de los A.; Mora, Elba; Arias, Evelyn

doi:10.4003/006.034.0102

Cited by 12 publications

(9 citation statements)

References 14 publications

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“…However, some molecular studies have reported the presence of O . mimus in Central America and Ecuador [ 76 , 77 ] (and references therein).…”

Section: Resultsmentioning

confidence: 99%

“…Interestingly, sample SF14 shares the same haplotype with the O . mimus specimen reported in Ecuador (GenBank accession KT335830) [ 77 ]. Data mined from customs information imports from the National Customs Superintendency of Peru (SUNAT) ( http://www.aduanet.gob.pe/cl-ad-itconsultadwh/ieITS01Alias?accion=consultar&CG_consulta=2 ), showed that recent octopus imports were represented only by O .…”

Section: Resultsmentioning

confidence: 99%

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A glimpse into the genetic diversity of the Peruvian seafood sector: Unveiling species substitution, mislabeling and trade of threatened species

et al. 2018

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Peru is one of the world’s leading fishing nations and its seafood industry relies on the trade of a vast variety of aquatic resources, playing a key role in the country’s socio-economic development. DNA barcoding has become of paramount importance for systematics, conservation, and seafood traceability, complementing or even surpassing conventional identification methods when target organisms show similar morphology during the early life stages, have recently diverged, or have undergone processing. Aiming to increase our knowledge of the species diversity available across the Peruvian supply chain (from fish landing sites to markets and restaurants), we applied full and mini-barcoding approaches targeting three mitochondrial genes (COI, 16S, and 12S) and the control region to identify samples purchased at retailers from six departments along the north-central Peruvian coast. DNA barcodes from 131 samples were assigned to 55 species (plus five genus-level taxa) comprising 47 families, 24 orders, and six classes including Actinopterygii (45.03%), Chondrichthyes (36.64%), Bivalvia (6.87%), Cephalopoda (6.11%), Malacostraca (3.82%), and Gastropoda (1.53%). The identified samples included commercially important pelagic (anchovy, bonito, dolphinfish) and demersal (hake, smooth-hound, Peruvian rock seabass, croaker) fish species. Our results unveiled the marketing of protected and threatened species such as whale shark, Atlantic white marlin, smooth hammerhead (some specimens collected during closed season), shortfin mako, and pelagic thresher sharks. A total of 35 samples (26.72%) were mislabeled, including tilapia labeled as wild marine fish, dolphinfish and hake labeled as grouper, and different shark species sold as “smooth-hounds”. The present study highlights the necessity of implementing traceability and monitoring programs along the entire seafood supply chain using molecular tools to enhance sustainability efforts and ensure consumer choice.

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“…However, some molecular studies have reported the presence of O . mimus in Central America and Ecuador [ 76 , 77 ] (and references therein).…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A glimpse into the genetic diversity of the Peruvian seafood sector: Unveiling species substitution, mislabeling and trade of threatened species

et al. 2018

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“…DNA amplification was carried out through a polymerase chain reaction ( PCR ) using the ribosomal 16S primers from Simon et al (1991) . The mitochondrial fragment 16S is an effective DNA barcode marker for identifying cephalopod species ( Dai et al 2012 ; Pliego-Cárdenas et al 2014 , 2016 ; Flores-Valle et al 2018 ). PCR conditions and sequencing are as in González-Gómez et al (2018) .…”

Section: Methodsmentioning

confidence: 99%

The first record of Tremoctopus violaceus sensu stricto Delle Chiaje,1830 in southwestern Gulf of Mexico gives a hint of the taxonomic status of Tremoctopus gracilis

Jiménez-Badillo¹,

Meiners-Mandujano²,

Galindo-Cortés³

et al. 2021

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Knowledge on species taxonomic identity is essential to understand biological and biogeographical processes and for studies on biodiversity. Species the genus Tremoctopus have been confused in the past and are inconsistently identified. To clarify of the taxonomic diagnosis Tremoctopus violaceus Delle Chiaje, 1830, an evaluation of morphological and meristic characters, as well as morphometric indices and genetic analyses, was undertaken. The analyzed octopod was an opportunistically collected mature female of 640 mm in total length, with a mantle length of 135 mm and a total weight of 1.02 kg. Evidence of autotomy as a defensive mechanism for protecting the egg mass is presented. The 16S haplotype sequenced from this specimen represents the first one publicly available for this species from the Gulf of Mexico. The genetic divergence between this haplotype and those reported from the Pacific Ocean is representative of interspecific variation in other taxa, which suggests that “T. violaceus” in the Pacific Ocean (KY649286, MN435565, and AJ252767) should be addressed as T. gracilis instead. Genetic evidence to separate T. violaceus and T. gracilis is presented. The studied specimen from the Gulf of Mexico represents the westernmost known occurrence of T. violaceus and the first record from the southwestern Gulf of Mexico.

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“…In Ecuador the octopus fishery has no official status as there are no management measures as well as no catch records (Norman et al ., 2014; Markaida & Gilly, 2016). However, this fishery has some tradition among small fishing communities in the Santa Elena Peninsula, Manta and Salango (Mora, 1993; Loor-Andrade, 2006; Naranjo-Tibanlombo, 2009; Pliego-Cárdenas et al ., 2016; Simbaña-Suquillo, 2017), where fishermen target them by free diving or hookah. The species involved in the fishery has been identified as Octopus mimus based on morphological traits (Loor-Andrade, 2006; Carreño-Maldonado, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…The species involved in the fishery has been identified as Octopus mimus based on morphological traits (Loor-Andrade, 2006; Carreño-Maldonado, 2012). Recent genetic analysis validated this identification, while showing that they are more closely related to specimens from Central America than those from the Peruvian province (Pliego-Cárdenas et al ., 2016). Knowledge on the biology and fishery of this octopus in Ecuador is still scarce and unpublished.…”

Section: Introductionmentioning

confidence: 99%

Reproduction and population structure ofOctopus mimusfished in a Marine Protected Area of Ecuador

et al. 2017

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Octopus mimus is the main octopus targeted by the small-scale fishery in the Eastern Pacific. Commercial catches of octopus from the Reserva de Producción Faunística Marino-Costera Puntilla de Santa Elena (REMACOPSE) Marine Protected Area in Ecuador were sampled from July to December 2013 in order to describe the reproduction and population structure of this octopus. The 4171 sampled octopuses ranged from 56 to 250 mm in mantle length (ML) and 45 to 3178 g in body weight (BW). Mean octopus weight did not change monthly. Males were mostly mature while the majority of females were immature. Presence of some mature and a few spent females in all months sampled suggests that the population shows an extended spawning period. No spawning peak could be properly defined. Sex ratios did not significantly shift from the expected 1:1 in most samples. Females mature at a larger size (1234 g, BW; 165 mm, ML) than males (487 g BW; 114 mm ML). We recommend considering a minimum legal size of 1200 g BW. A year-long sampling programme for O. mimus should also be completed in order to detect any spawning peak.

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Genetic evidence of the presence ofOctopus mimusin the artisanal fisheries of octopus in Santa Elena Peninsula, Ecuador

Cited by 12 publications

References 14 publications

A glimpse into the genetic diversity of the Peruvian seafood sector: Unveiling species substitution, mislabeling and trade of threatened species

A glimpse into the genetic diversity of the Peruvian seafood sector: Unveiling species substitution, mislabeling and trade of threatened species

The first record of Tremoctopus violaceus sensu stricto Delle Chiaje,1830 in southwestern Gulf of Mexico gives a hint of the taxonomic status of Tremoctopus gracilis

Reproduction and population structure ofOctopus mimusfished in a Marine Protected Area of Ecuador

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