Trends in age-at-recruitment and juvenile growth of cuttlefish, Sepia officinalis, from the English Channel
نویسندگان
چکیده
منابع مشابه
Accommodation 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 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...
متن کاملCamouflage 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 کاملSaccadic Movement Strategy in Common Cuttlefish (Sepia officinalis)
Most moving animals segregate their locomotion trajectories in short burst like rotations and prolonged translations, to enhance distance information from optic flow, as only translational, but not rotational optic flow holds distance information. Underwater, optic flow is a valuable source of information as it is in the terrestrial habitat, however, so far, it has gained only little attention....
متن کاملBehavioural responses of juvenile cuttlefish (Sepia officinalis) to local water movements
Physiological studies have shown that the epidermal head and arm lines in cephalopods are a mechanoreceptive system that is similar to the fish and amphibian lateral lines (Budelmann BU, Bleckmann H. 1988. A lateral line analogue in cephalopods: Water waves generate microphonic potentials in the epidermal head lines of Sepia officinalis and Lolliguncula brevis. J. Comp. Physiol. A 164:1–5.); ho...
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ژورنال
عنوان ژورنال: ICES Journal of Marine Science
سال: 2005
ISSN: 1095-9289,1054-3139
DOI: 10.1016/j.icesjms.2005.06.006