Hernández-Urcera Jorge, González Ángel F, Escolano Felipe, Cabanellas-Reboredo Miguel
ECOBIOMAR Research Group Institute of Marine Research (IIM-CSIC) Vigo Spain.
National Center Spanish Institute of Oceanography, CSIC Balearic Islands CO Spain.
Ecol Evol. 2024 Aug 7;14(8):e70111. doi: 10.1002/ece3.70111. eCollection 2024 Aug.
It is accepted that loliginids, like other squid, deposit their eggs in crevices on the seabed and then abandon them. In this work, we present observational evidence of egg guarding behavior in wild European squid, . While monitoring a squid spawning crevice at night in Spain, a large mass of squid eggs was located and filmed 17 times during 42 days, until hatching. A male and a female of were filmed in front of the crevice. The same male was filmed guarding the eggs on consecutive days. In the presence of the divers, male and female alternated their approaches to the crevice repeatedly touching and flushing the egg clusters. This guarding behavior differs from the reproductive habits assumed for the European squid and could represent the first evidence of egg guarding by a male in cephalopods.
人们普遍认为，枪乌贼和其他鱿鱼一样，会将卵产在海床的裂缝中，然后弃之不顾。在这项研究中，我们展示了野生欧洲鱿鱼护卵行为的观察证据。在西班牙夜间监测鱿鱼产卵裂缝时，在42天内17次发现并拍摄到大量鱿鱼卵，直至孵化。拍摄到一雄一雌两只鱿鱼在裂缝前。同一只雄性鱿鱼连续几天被拍摄到守护着卵。在潜水员在场的情况下，雄性和雌性鱿鱼反复交替靠近裂缝，触摸并冲洗卵团。这种护卵行为不同于人们对欧洲鱿鱼生殖习性的认知，可能是头足类动物中雄性护卵的首个证据。
