Arm anomalies: cases of supernumerary development and bilateral agenesis of arm pairs in Octopoda (Mollusca, Cephalopoda)

@article{Toll2005ArmAC,
  title={Arm anomalies: cases of supernumerary development and bilateral agenesis of arm pairs in Octopoda (Mollusca, Cephalopoda)},
  author={Ronald B. Toll and Lynetta C. Binger},
  journal={Zoomorphology},
  year={2005},
  volume={110},
  pages={313-316}
}
SummaryThe first case of true hexapody among the Octopoda, resulting from bilateral agenesis of one arm pair, is described for a malePteroctopus tetracirrhus. A case of decapody, with uniform development of all arms, is also reported for the first time for a maleOctopus briareus. Both conditions apparently result from developmental anomalies of the embryonic arm anlagen. A survey of other anomalous conditions relating to arm development and regeneration within the Cephalopoda is provided. A… Expand

Figures from this paper

First observation of a double tentacle bifurcation in cephalopods
A female with the two tentacles bifurcated was found within a sample of 54 specimens of Moroteuthis ingens collected by a Spanish trawler fishing in the South Atlantic around the Falklands IslandsExpand
A Unique Case of Bilateral Hectocotylization in the North Pacific Giant Octopus (Enteroctopus dofleini)
TLDR
In over one hundred years of research, double hectocotylization has been reported in only six individual cases in six different species of octopus including: Eledone cirrhosa (by Appellof, 1892),Octopus briareus (by Robson, 1929), Octopus vulgaris (by Palacio, 1973, Octopus selene ( by Palacio) and Octopus minor (by Higashide et al., 2007). Expand
The Musculature of Coleoid Cephalopod Arms and Tentacles
  • W. Kier
  • Biology, Medicine
  • Front. Cell Dev. Biol.
  • 2016
TLDR
It is likely that coleoid cephalopods use ultrastructural modifications rather than tissue-specific myosin isoforms to tune contraction velocities. Expand
Arm Abnormality in Octopus hubbsorum (Mollusca: Cephalopoda: Octopodidae)
TLDR
This is the principal target species in the octopus fisheries in Mexico, and a female with abnormally bifurcated second arm was collected from an artisanal fishery in Puerto Angel, Oaxaca. Expand
Characterization of deformed hatchlings of Octopus vulgaris obtained under captivity from a small female
TLDR
Malformations of paralarvae were noticed in the first spawning days, namely the absence of arms, and these abnormalities might be derived from the physiological condition of the breeding specimen (the female's lower weight to the estimated amount of living days), which might be eventually related to nutritional unbalances or genetic parameters that were transferred to the eggs. Expand
Life history of the bathyal octopus Pteroctopus tetracirrhus (Mollusca, Cephalopoda) in the Mediterranean Sea
TLDR
The bathymetric distribution of P. tetracirrhus coincides with those of these two main prey, which suggests that the distribution of the octopus might be strongly linked to its trophic resources. Expand
Variability in Sepietta oweniana (Cephalopoda: Sepiolidae) hectocotyli
TLDR
The morphological variability observed in hectocotyli of Sepietta oweniana specimens caught in the Sardinian seas is reported and measured and atypical variants from the normal hectOCotylus are described and illustrated. Expand
Potentially handicapped but otherwise functional: Malformations in prey capture tools show no impacts on octopus life
TLDR
Surprisingly, the teratological condition of the individual likely had no severe impacts on its life, even though it likely represents a handicap for its survival during its planktonic life. Expand
Cephalopod Tissue Regeneration: Consolidating Over a Century of Knowledge
TLDR
An overview of more than one-hundred studies carried out over the last 160 years of regeneration in cephalopod mollusks is provided to provide a reference to prior work thus to facilitate future research efforts. Expand
Flapjack devilfish in the northern North Atlantic: morphology, biology and ecology of Opisthoteuthis borealis (Cephalopoda, Octopoda, Cirrata)
TLDR
Despite the assumption that Cirrata feed on relatively small prey only, large mature males of O. borealis consume polychaetes reaching 41.5–45.9% ML of the specimens, suggesting well-developed regeneration is present even in this ancient taxon of cephalopods. Expand
...
1
2
...

References

SHOWING 1-10 OF 29 REFERENCES
Supernumerary limgs in amphibians: experimental production in Notophthalmus viridescens and a new interpretation of their formation.
TLDR
A new model of pattern regulation in epimorphic fields which can account for these results and which has retrospective value in the interpretation of earlier experiments on developing limbs is discussed. Expand
The structure of 180° supernumerary limbs and a hypothesis of their formation
TLDR
A hypothesis to explain the production of these abnormal limbs is proposed based on the observed phenomenon of fusion of supernumerary blastemata, but their regenerative behaviour presents problems for current models of pattern formation. Expand
Pattern Regulation in the Regenerating Limbs of Urodele Amphibians
TLDR
The purpose of this paper is to review the experiments that have been published since the turn of the century that deal with patter formation in the regenerating limbs of urodele amphibians and to discuss these results in the context of recent theoretical models. Expand
Arm Abnormality in Octopus
TLDR
An unusual feature was the presence of a well-developed web between the two divisions as found uniting the bases of normal arms in this species of cephalopod. Expand
LXXIV.—Notes on the Cephalopoda.—IX. Remarks on Atlantic Octopoda &c. in the Zoölogisch Museum, Amsterdam
(1929). LXXIV.—Notes on the Cephalopoda.—IX. Remarks on Atlantic Octopoda &c. in the Zoologisch Museum, Amsterdam. Annals and Magazine of Natural History: Vol. 3, No. 18, pp. 609-618.
Über den gespaltenen Arm eines Octopus vulgaris
  • B. Hankó
  • Biology
  • Archiv für Entwicklungsmechanik der Organismen
  • 2005
TLDR
Doppeland Spaltbildungen wurden bereits aus dem ganzen Tierreiehe beschrieben, oder das Hervorsprossen eines kleineren seitlichen Saugnapfes aus einem grSl~eren, bei den Cephalopoden zu sein. Expand
Cephalopoda Tintenfische
  • Morphogenese der Tiere. Gustav Fischer, Stuttgart,
  • 1978
Cephalopoda : Decapoda
  • Reproduction of marine invertebrates , vol IV . Molluscs : Gastropods and cephalopds
  • 1977
...
1
2
3
...