... 2021 © 2021. Published by The Company of Biologists Ltd 2021 Highlighted Article: An extraocular photoreception mechanism in the octopus arm displays negative phototactic responses. Octopus vulgaris Cephalopod Phototactic Extraocular photoreception The octopus has...

... improve both male attraction and mating. Unlike other cephalopods, Octopus vulgaris adopts an indirect internal fertilization strategy. We here report on the identification and characterization of a chemoattractant peptide isolated from mature eggs of octopus females. Using two-chamber and time-lapse...

... Houlihan , D. F. , Duthie , G. , Smith , P. J. , Wells , M. J. and Wells , J. ( 1986 ). Ventilation and circulation during exercise in Octopus vulgaris . J. Comp. Physiol. B 156 , 683 – 689 . 10.1007/BF00692746 Hove-Madsen , L. ( 1992 ). The influence...

...M. J. Wells; J. Wells ABSTRACT Octopus vulgaris can regulate its oxygen uptake down to a of around 6.7 kPa. As the tension falls from 18.6 to 6.7 kPa (140 to 50 mmHg), P V (the pressure pulse driving the ventilatory flow, measured inside the mantle cavity) can more than double while f V...

...M. J. Wells; J. Wells ABSTRACT The replacement of fluid following withdrawal of up to 40% of the blood from Octopus vulgaris can be tracked over a period of days by measuring the dilution of haemocyanin, which is not simultaneously replaced. Haemocyanin concentration was measured from the copper...

...C. Agnisola; D. F. Houlihan ABSTRACT The effect of increasing oxygen supply on the perfused systemic heart of Octopus vulgaris (Lam.) by using oxygenated or haemocyanin-containing perfusates was investigated. Providing aerated blood or seawater solutions of haemocyanin that were comparable...

...C. Agnisola; W. R. Driedzic; A. R. Foster; D. F. Houlihan; J. M. Stewart ABSTRACT The heart of Octopus vulgaris (Lam.) presents an ideal tissue for in vitro studies. Its performance, when perfused with haemocyanin solutions or blood, closely matches that in vivo in terms of power output ( Agnisola...

...R. K. O’Dor; M. J. Wells ABSTRACT Octopus vulgaris Cuvier has a fully enclosed blood system that includes large blood sinuses behind the eyes and around the gut. Experiments on the response of the hearts in exercise and hypoxic stress ( Wells, 1979 ; Wells & Wells, 1983 ) and the response...