Invertebrate predation on egg masses of the European cuttlefish, Sepia officinalis: An experimental approach
نویسندگان
چکیده
منابع مشابه
Camouflage during movement in the European cuttlefish (Sepia officinalis).
A moving object is considered conspicuous because of the movement itself. When moving from one background to another, even dynamic camouflage experts such as cephalopods should sacrifice their extraordinary camouflage. Therefore, minimizing detection at this stage is crucial and highly beneficial. In this study, we describe a background-matching mechanism during movement, which aids the cuttlef...
متن کاملAccommodation in the cuttlefish (Sepia officinalis).
We have studied natural accommodation in the eye of six specimens of cuttlefish (Sepia officinalis) as they were fed with fish and shrimp. Using infrared photoretinoscopy, we observed (1) that the resting refractive state of the cuttlefish was emmetropic or slightly hyperopic, (2) that accommodation took place only a fraction of a second before a strike and (3) that accommodation focused select...
متن کاملExperimental evidence for spatial learning in cuttlefish (Sepia officinalis).
Laboratory mazes were used to study spatial-learning capabilities in cuttlefish (Sepia offcinalis), using escape for reinforcement. In preliminary observations, cuttlefish in an artificial pond moved actively around the environment and appeared to learn about features of their environment. In laboratory experiments, cuttlefish exited a simple alley maze more quickly with experience and retained...
متن کاملPeptidergic regulation of chromatophore function in the European cuttlefish Sepia officinalis
Color patterning in cephalopod molluscs involves activation of a peripheral chromatophore system that is under neuromuscular control. The complex behavior of individual chromatophores is mediated by a specific set of muscles, the chromatophore muscles, that receive direct innervation from the central nervous system. To date, glutamate is the only excitatory transmitter that has been proposed to...
متن کاملSymmetrical crypsis and asymmetrical signalling in the cuttlefish Sepia officinalis.
The salience of bilateral symmetry to humans has led to the suggestion that camouflage may be enhanced in asymmetrical patterns. However, the importance of bilateral symmetry in visual signals (and overall morphology) may constrain the evolution of asymmetrical camouflage, resulting in the bilaterally symmetrical cryptic patterns that we see throughout the animal kingdom. This study investigate...
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ژورنال
عنوان ژورنال: Estuarine, Coastal and Shelf Science
سال: 2018
ISSN: 0272-7714
DOI: 10.1016/j.ecss.2017.11.016