Size and sex structure variations of picked dogfish (Squalus acanthias, Linnaeus, 1758) (Chondrichthyes - Elasmobranchii) in the Western Black Sea

Tserkova, Feriha; Mihneva, Vesselina; Pavlova, Elitsa L.; Penchev, Philip

doi:10.1016/j.rsma.2022.102298

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…Studies conducted in the northwestern region of the Black Sea show that males are dominant (Maximov et al, , 2010Radu, 2016;Tserkova et al, 2022). While female (68%) appears to be dominant in the southeastern Black Sea coasts, the ratio of female to male is 2.1:1 (Düzgüneş et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

“…Besides, the picked dogfish (Squalus acanthias) is the most important shark species living in the Black Sea. The picked dogfish has slow growth and late maturity feature (Tserkova et al, 2022). The IUCN status of picked dogfish in the Black Sea countries were reported LC -least concerned for Georgia; NTnear threatened for Romania; EN-endangered for Türkiye (Radu & Maximov, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Some Population Parameters of Picked Dogfish (Squalus acanthias L. 1758) Incidentally Captured in Commercial Fisheries in Southern Black Sea Shores and a First Record of Angular Roughshark (Oxynotus centrina, L. 1758) for Black Sea

ÖZDEMİR,

ÖZSANDIKÇI,

DUYAR

2023

Marine Science and Technology Bulletin

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The study, which aimed to determine some population parameters of picked dogfish (Squalus acanthias L. 1758) distributed in the Black Sea, was carried out in the five fishing seasons (between 2016 and 2023 years). The sharks draw attention as a bycatch for all fishing gear used in the Black Sea. In the study, total length (cm), weight (g) and sex (female/male) data were obtained from the sharks captured with all fishing gears (demersal trawl, midwater trawl, gillnets purse seine, turbot gillnets, trammel nets and bottom) used in commercial fishing activities in the Black Sea of Türkiye. A total of 576 specimens were collected all fishing gears during the sampling period. Length-weight relationship (LWR) was founded as W=0.0097L2.8521 (R2 =0.9854) for all the picked dogfish. Also, mean total length 48.9±0.707 cm respectively. In addition, the first record of the angular roughshark (Oxynotus centrina, L. 1758) species was given for the Black Sea coasts, which originated in the western Atlantic, was seen in the Mediterranean, Aegean Sea and the Marmara Sea of Türkiye. The shark, which was accidentally caught with a purse seine net, measured as 33.5 cm in total length and weighed 585 g.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Some Population Parameters of Picked Dogfish (Squalus acanthias L. 1758) Incidentally Captured in Commercial Fisheries in Southern Black Sea Shores and a First Record of Angular Roughshark (Oxynotus centrina, L. 1758) for Black Sea

ÖZDEMİR,

ÖZSANDIKÇI,

DUYAR

2023

Marine Science and Technology Bulletin

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“…Larger spurdog are more likely in shallow waters in the northeastern United States and North Atlantic (Dell'Apa et al., 2017; Jac et al., 2022; Methratta & Link, 2007). In spring, catchability of female spurdog increased in Atlantic Canada, Northeast US shelf, and Western Black Sea (Campana et al., 2007; Sagarese et al., 2014; Tserkova et al., 2022). Tagged pregnant‐female spurdog migrated into deeper waters in winter–spring more strongly than in autumn (Carlson et al., 2014; Junge et al.…”

Section: Discussionmentioning

confidence: 99%

“…and those from New Zealand (Finucci et al, 2018) Campana et al, 2007;Sagarese et al, 2014;Tserkova et al, 2022).…”

Section: Relative Abundancementioning

confidence: 99%

A longline survey for spurdog distribution and life history along the Norwegian coast

Andrade,

Nilsen,

Vollen

et al. 2023

Fisheries Management Eco

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To improve spatiotemporal data collection and inform future spurdog Squalus acanthias stock assessment, a new dedicated longline survey was initiated in 2021 in coastal waters of southern Norway. The survey comprised a mixture of randomly predefined stations to facilitate unbiased abundance estimates and supplementary stations including informant putative hotspots. During 25 survey days in autumn 2021, 287 stations were sampled, of which 280 were categorized as “satisfactory” in terms of gear quality deployment. Spurdog catches (n = 954) were more abundant in southeast coastal shallower waters (19–150 m). No length, sex, or maturity stratified schooling behavior was found with increasing catches. Females were more abundant and larger than males, but males were older. Growth and reproduction parameters were within ranges reported for the stock. Our results provide valuable input for spurdog survey designs with regards to optimizing boat time, location of stations, and biological sampling protocols. The survey provides important data for monitoring the spurdog stock and other data‐limited species, especially considering the newly re‐opened spurdog fishery but also to study possible future effects of climatic changes on spurdog distribution.

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Beyond the anchovy: Unveiling the Black Sea’s elasmobranchs

Bengil,

Erdoğan Sağlam

2024

Zoology in the Middle East

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Size and sex structure variations of picked dogfish (Squalus acanthias, Linnaeus, 1758) (Chondrichthyes - Elasmobranchii) in the Western Black Sea

Cited by 4 publications

References 14 publications

Some Population Parameters of Picked Dogfish (Squalus acanthias L. 1758) Incidentally Captured in Commercial Fisheries in Southern Black Sea Shores and a First Record of Angular Roughshark (Oxynotus centrina, L. 1758) for Black Sea

Some Population Parameters of Picked Dogfish (Squalus acanthias L. 1758) Incidentally Captured in Commercial Fisheries in Southern Black Sea Shores and a First Record of Angular Roughshark (Oxynotus centrina, L. 1758) for Black Sea

A longline survey for spurdog distribution and life history along the Norwegian coast

Beyond the anchovy: Unveiling the Black Sea’s elasmobranchs

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