| 摘要: |
| 2025年4月和12月在大连市旅顺口区海域采集到王子鲍氏阿蛄虾[Boasaxius princeps (Boas, 1880)], 这是国内的首次正式记录和描述。由此, 王子鲍氏阿蛄虾的地理分布记录从韩国沿海、日本海两侧的日俄沿海到我国黄海北部, 即大连南部的旅顺海域。本文对其形态特征进行了详细的描述, 并介绍了历史记载中甚少提及的不同性别王子鲍氏阿蛄虾的外形差异, 并提出其第一腹足形态可辅助作为雌雄鉴定的依据。由于其穴居性和在当地海鲜市场出现, 王子鲍氏阿蛄虾在旅顺的出现表明其已形成了稳定的定殖种群, 这可能是东北亚海运往来过程中压舱水携带的幼体定居后形成的, 也不排除随着气候变化导致的洋流异常现象, 王子鲍氏阿蛄虾幼体可跨过黄海冷水团后定居于中国黄海北部甚至进入渤海海域的可能。 |
| 关键词: 新记录 王子鲍氏阿蛄虾[Boasaxius princeps (Boas, 1880)] 生物扩散 旅顺 黄海冷水团 |
| DOI：10.11759/hykx20251023001 |
| 分类号:Q959.223+.63 |
| 基金项目:国家自然科学基金资助项目(41006079) |
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| New distribution record of Boasaxius princeps (Boas, 1880) |
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Xing Kun
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College of Marine Technology and Environment, Dalian Ocean University, Dalian 116023, China
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| Abstract: |
| In April and December 2025, several specimens of Boasaxius princeps (Boas, 1880) were collected from the coastal waters of Lvshunkou District, Dalian, marking the first formal record and description of this species in China. This finding extends the known geographic distribution of B. princeps from the coasts of Korea and the Japanese and Russian shores of the Sea of Japan to the northern Yellow Sea, specifically the Lvshun coastal area in southern Dalian. The present study provides an elaborated morphological description of the specimens, discusses the seldom-mentioned sexual dimorphism of B. princeps in anecdotal references, and proposes that the morphology of the first pleopod can be used for sex identification. Given its burrowing behavior and regular occurrence in the local seafood market, it is inferred that B. princeps has established a stable population in the Lvshun area. This establishment may have resulted from larval settlement introduced via ballast water during maritime transport in Northeast Asia. Alternatively, climatic changes and anomalous ocean current patterns may have enabled the larvae of B. princeps to cross the Yellow Sea Cold Water Mass and settle in the northern Yellow Sea or disperse further into the Bohai Sea. |
| Key words: new record Boasaxius princeps (Boas, 1880) biological dispersal Lvshun Yellow Sea cold water mass |
