Short-beaked common dolphin in the northern Adriatic Sea 2010-2011

Original provider: Tilen Genov, Morigenos Dataset credits: Tilen Genov, Morigenos - marine mammal research & conservation society, Slovenia Abstract: This dataset represents a female short-beaked common dolphin (<i>Delphinus delphis</i>) recorded in the northern Adriatic Sea, a region where the species has become extremely rare. The animal was sighted repeatedly in the two locations shown. It was initially sighted with a calf, at the 1st location, in the port of Monfalcone (northern Adriatic Sea). The two dolphins were repeatedly sighted there between June 2010 and January 2011, in an area of 1.2 km2. In February 2011, the calf disappeared, while the adult was subsequently repeatedly sighted between Monfalcone and the city of Trieste until September 2011, when it disappeared as well. A comparison with a catalog of 171 naturally marked short-beaked common dolphins from the Inner Ionian Sea Archipelago, Greece, revealed that the adult was encountered there in August 2008. If moving in a straight line, the animal would have traveled a minimum of 1000 km between the two sites. This is the longest documented movement for any individual of this species, worldwide.原始提供方：蒂伦·杰诺夫（Tilen Genov）、莫里根诺斯（Morigenos） 数据集致谢：蒂伦·杰诺夫（Tilen Genov）、斯洛文尼亚海洋哺乳动物研究与保护协会莫里根诺斯（Morigenos） 摘要：本数据集记录了一头在亚得里亚海北部海域观测到的雌性短喙普通海豚（Delphinus delphis），该海域已是该物种极为罕见的分布区域。该个体曾在图中所示的两处地点被多次观测到。最初于第一处观测点——亚得里亚海北部的蒙法尔科内港，该成年海豚与一头幼豚一同被首次观测到；2010年6月至2011年1月期间，这两头海豚在面积达1.2平方千米的该区域内被多次观测记录。2011年2月，幼豚失踪；此后该成年雌性海豚在蒙法尔科内与的里雅斯特市之间的海域被多次观测，直至2011年9月同样失踪。通过与希腊爱奥尼亚海内群岛区域171头带有天然体表标记的短喙普通海豚的观测名录比对，发现该成年个体曾于2008年8月在该区域被记录。若以直线距离计算，该个体在两处观测点间的移动距离至少达1000千米，这是全球范围内该物种个体有记录以来最长的移动距离。