Filiciotto Francesco, Sal Moyano María P, Hidalgo Fernando, de Vincenzi Giovanni, Bazterrica Maria C, Ceraulo Maria, Corrias Valentina, Quinci Enza Maria, Lorusso Martìn, Mazzola Salvatore, Buscaino Giuseppa, Gavio María A
Consiglio Nazionale delle Ricerche, Istituto di Scienze Polari (ISP-CNR), Spianata S. Raineri, 86, 98122, Messina, ME, Italy.
Instituto de Investigaciones Marinas y Costeras (IIMyC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Estación Costera J. J. Nágera, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, 7600, Mar del Plata, Argentina.
Naturwissenschaften. 2019 Jun 14;106(7-8):35. doi: 10.1007/s00114-019-1633-x.
In semi-terrestrial crabs, the production of sounds has been recognized to be related to courtship communication dynamics. The present study aimed to assess if the crab Neohelice granulata (Varunidae) was able to emit acoustic signals and if they played a role in the crab's behaviour. We also assessed the locomotor behaviours to examine these parameters in different mating contexts of crabs. The study was divided into two different experimental conditions: 'solitary experiment' (consisting of three combination layouts with male, unreceptive and receptive females alone) and 'group experiment' (consisting of mixed combinations layouts of males, unreceptive, and receptive females). Synchronized acoustic and video monitoring systems were used to record the acoustic signals and locomotor behaviours of alone and grouped specimens. The greatest values of locomotor behavioural parameters were observed in layouts with receptive females alone and with 2 males plus 1 receptive female, probably related to courtship behaviour. N. granulata produced two distinct signals, a multi-pulse rasp signal (highest numbers were recorded in layouts with male alone and with 2 males plus 1 receptive female) and a single rasp signal. These results may suggest that males use the multi-rasp signal to advertise their presence to other males or to attract receptive females.
在半陆生蟹类中，声音的产生被认为与求偶交流动态有关。本研究旨在评估颗粒新海伦蟹（方蟹科）是否能够发出声学信号，以及这些信号是否在蟹类行为中发挥作用。我们还评估了运动行为，以在蟹类不同的交配情境中检查这些参数。该研究分为两种不同的实验条件：“单独实验”（由雄性、未接受交配的雌性和接受交配的雌性单独存在的三种组合布局组成）和“群体实验”（由雄性、未接受交配的雌性和接受交配的雌性的混合组合布局组成）。使用同步声学和视频监测系统记录单独和成群标本的声学信号和运动行为。在仅存在接受交配的雌性以及2只雄性加1只接受交配的雌性的布局中观察到运动行为参数的最大值，这可能与求偶行为有关。颗粒新海伦蟹产生两种不同的信号，一种多脉冲锉信号（在仅存在雄性以及2只雄性加1只接受交配的雌性的布局中记录到的数量最多）和一种单锉信号。这些结果可能表明，雄性使用多锉信号向其他雄性宣传自己的存在或吸引接受交配的雌性。
