Is Pinna rudis Linnaeus, 1758 Spreading Towards the North (Adriatic Sea, Montenegro)
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Slavica Petović [1] ; Nikola Djordjević [2]
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[1] 0000-0001-6080-1959
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[2] 0000-0003-1659-8898
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- Localización: Thalassas: An international journal of marine sciences, ISSN 0212-5919, Vol. 41, Nº. 3, 2025
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
This study presents the first quantitative assessment of the rare bivalve Pinna rudis along the southeastern Adriatic coast of Montenegro, documenting nine specimens across five locations between 2023 and 2025. Using a non-invasive biometric approach, we measured shell dimensions and estimated ages, revealing a population composed entirely of juveniles approximately 2–3 years old. Maximum shell width (MW) ranged from 38 to 125.6 mm, while minimum shell width (mw) ranged from 32 to 63 mm. The largest posterior shell length (PL) was 177 mm, recorded at Cape Trašte. Total shell length ranged from 88.9 to 257.05 mm. Our findings suggest that warming sea temperatures have facilitated the northward expansion of P. rudis into the Adriatic Sea, a region where it was previously unrecorded or scarce. This research fills a critical knowledge gap regarding the species’ distribution, population structure, and growth dynamics in the Adriatic, providing essential baseline data for conservation strategies aimed at protecting this vulnerable and thermophilic bivalve.
