Alexandra Vladimirovna Gerasimova , Lyudmila Pavlovna Flyachinskaya , Lezin Petr Andreevich , Nadezhda Andreevna Filippova , Alexandra Sergeevna Kudryashova , Alexey Ivanovich Starkov , Nikolai Vladimirovich Maximovich
{"title":"Reproduction features of ocean quahog, Arctica islandica (Linnaeus, 1767), in the White Sea","authors":"Alexandra Vladimirovna Gerasimova , Lyudmila Pavlovna Flyachinskaya , Lezin Petr Andreevich , Nadezhda Andreevna Filippova , Alexandra Sergeevna Kudryashova , Alexey Ivanovich Starkov , Nikolai Vladimirovich Maximovich","doi":"10.1016/j.csr.2025.105469","DOIUrl":null,"url":null,"abstract":"<div><div>The gametogenic cycle of ocean quahog, <em>Arctica islandica</em>, was investigated using specimens collected from a near-shore bed (10–15 m deep) in the Kandalaksha Bay of the White Sea during five summer seasons (1983, 1984, 2011, 2015, 2017). At present, the White Sea is the eastern distribution boundary of this mollusk. Local environmental conditions there differ considerably from those in other parts of its range, and many characteristics of the quahog populations in the White Sea are still poorly understood. In this study, we examined gonads from 384 ocean quahogs with shell length over 30 mm prepared with the use of standard histological techniques. The results showed that the reproductive cycle features <em>of A. islandica</em> in the White Sea were generally similar to those in other parts of its distribution. Clams in the spawning state were found mainly from the second half of July to October at a near-bottom water temperature of 9–15 °C. Both average (60–70 μm) and maximum (92–95 μm) size of mature oocytes of ocean quahogs from the White Sea were similar to those in North Atlantic populations. At the same time, we noted substantial interannual shifts in the spawning activity of <em>A. islandica</em> and showed that they reflected interannual changes in hydrological characteristics. However, it is unlikely that these shifts may affect the overall recruitment success of the population of this species.</div></div>","PeriodicalId":50618,"journal":{"name":"Continental Shelf Research","volume":"290 ","pages":"Article 105469"},"PeriodicalIF":2.1000,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Continental Shelf Research","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S027843432500069X","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}
引用次数: 0
Abstract
The gametogenic cycle of ocean quahog, Arctica islandica, was investigated using specimens collected from a near-shore bed (10–15 m deep) in the Kandalaksha Bay of the White Sea during five summer seasons (1983, 1984, 2011, 2015, 2017). At present, the White Sea is the eastern distribution boundary of this mollusk. Local environmental conditions there differ considerably from those in other parts of its range, and many characteristics of the quahog populations in the White Sea are still poorly understood. In this study, we examined gonads from 384 ocean quahogs with shell length over 30 mm prepared with the use of standard histological techniques. The results showed that the reproductive cycle features of A. islandica in the White Sea were generally similar to those in other parts of its distribution. Clams in the spawning state were found mainly from the second half of July to October at a near-bottom water temperature of 9–15 °C. Both average (60–70 μm) and maximum (92–95 μm) size of mature oocytes of ocean quahogs from the White Sea were similar to those in North Atlantic populations. At the same time, we noted substantial interannual shifts in the spawning activity of A. islandica and showed that they reflected interannual changes in hydrological characteristics. However, it is unlikely that these shifts may affect the overall recruitment success of the population of this species.
期刊介绍:
Continental Shelf Research publishes articles dealing with the biological, chemical, geological and physical oceanography of the shallow marine environment, from coastal and estuarine waters out to the shelf break. The continental shelf is a critical environment within the land-ocean continuum, and many processes, functions and problems in the continental shelf are driven by terrestrial inputs transported through the rivers and estuaries to the coastal and continental shelf areas. Manuscripts that deal with these topics must make a clear link to the continental shelf. Examples of research areas include:
Physical sedimentology and geomorphology
Geochemistry of the coastal ocean (inorganic and organic)
Marine environment and anthropogenic effects
Interaction of physical dynamics with natural and manmade shoreline features
Benthic, phytoplankton and zooplankton ecology
Coastal water and sediment quality, and ecosystem health
Benthic-pelagic coupling (physical and biogeochemical)
Interactions between physical dynamics (waves, currents, mixing, etc.) and biogeochemical cycles
Estuarine, coastal and shelf sea modelling and process studies.