An Observation of Inking Behavior Protecting Adult Octopus bocki from Predation by Green Turtle (Chelonia mydas) Hatchlings

  title={An Observation of Inking Behavior Protecting Adult Octopus bocki from Predation by Green Turtle (Chelonia mydas) Hatchlings},
  author={Roy L. Caldwell},
  • R. Caldwell
  • Published 11 January 2005
  • Environmental Science
ABSTRACT There have been few studies that demonstrate a protective function of inking behavior of cephalopods. In this paper I report the use of ink pseudomorphs by adult Octopus bocki against predatory attacks from green turtle (Chelonia mydas) hatchlings. Turtles that attacked ink pseudomorphs ceased predation attempts whereas naive turtles attacked and ingested octopuses. 

Behaviour of Robsonella fontaniana in response to a potential predator

The results show that crypsis and an increase in the inactivity period are strategies used by octopuses as protection and defence mechanisms against predators.

Japanese pygmy squid (Idiosepius paradoxus) use ink for predation as well as for defence

Japanese pygmy squid towards three crustacean prey species is found that ink is also used for predation, and the success rate of ink attacks differed significantly between the two prey species on which ink attacks were made.

Japanese pygmy squid (Idiosepius paradoxus) use ink for predation as well as for defence

Inking is one of the defensive tactics in cephalopods. By observing the predatory behaviours of Japanese pygmy squid (Idiosepius paradoxus) towards three crustacean prey species (Neomysis intermedia,

Ink From Longfin Inshore Squid, Doryteuthis pealeii, as a Chemical and Visual Defense Against Two Predatory Fishes, Summer Flounder, Paralichthys dentatus, and Sea Catfish, Ariopsis felis

This work finds that ink from longfin inshore squid affected the approach phase of predation by summer flounder, primarily through its visual effects, and provides the basis for a comparative approach to identify deterrent molecules from inking cephalopods and to examine neural mechanisms whereby these chemicals affect behavior of fish, using the sea catfish as a chemosensory model.

Wild Wunderpus photogenicus and Octopus cyanea employ asphyxiating ‘constricting’ in interactions with other octopuses

Aggressive constricting including asphyxiation was observed in wild octopuses (Octopus cyanea Gray, 1849, and Wunderpus photogenicus Hochberg, Norman & Finn, 2006), providing possible evidence of interference competition among closely related sympatric cephalopod species in the wild.

An elaborate behavioural sequence reinforces the decoy effect of ink during predatory attacks on squid

The results suggest that squid inking behaviour exhibits a substantial decoy effect on predators and is associated with a series of complex, spatio-temporally regulated behaviours.

Escape by Inking and Secreting: Marine Molluscs Avoid Predators Through a Rich Array of Chemicals and Mechanisms

  • C. Derby
  • Biology
    The Biological Bulletin
  • 2007
This review focuses on recent work on mechanisms of defense by inking in sea hare (Aplysia) and extends what has learned about sea hares to other molluscs including the cephalopods.



Ameloctopus litoralis, gen. et sp. nov. (Cephalopoda : Octopodidae), a new shallow-water octopus from tropical Australian waters

A new genus of octopus is described from northern Australian waters, Ameloctopus litoralis, characterised by the absence of an ink sac, vestigial funnel organ, terminal organ without a diverticulum, marked elongation of the arms and arm autotomy.

Distance chemoreception in the common cuttlefish, Sepia officinalis (Mollusca, Cephalopoda)

Ink Ejection by Cephalopoda

  • D. Hall
  • Environmental Science
  • 1956
IT has long been said that the ink discharged by the great majority of cephalopods is ejected as a black cloud, under cover of which the animal may escape from a threatened attack. That this is false

A test of novel function(s) for the ink of sea hares

Behavioural adaptations of desert rodents (Heteromyidae)

Heteromyid rodents make excellent models for answering questions about the evolution of diverse behaviour patterns and can be used in future studies to examine a variety of behavioural patterns, ranging from individual foraging and predator defence to mating strategies and other social interactions.

Patterns of caudal‐autotomy evolution in lizards

It is indicated that tail morphology has co-evolved with caudal autotomy such that the evolution of the CFL has reduced caudAL autotomy in certain groups of lizards.

Dentitional phenomena in cobra revisited : spitting and fang structure in the Asiatic species of Naja (Serpentes : Elapidae)

There is considerable variation in the degree of fang modification among the species of spitting cobras, and only a small reduction in discharge orifice size seems to enable spitting.

Behavioral responses to chemical stimulation of the olfactory organ in the squid Loligo opalescens

The olfactory organ can thus mediate detection of water-borne chemicals and is linked to motor control pathways involved in initiating escape-jetting behavior.