The anatomy of the body wall and appendages in Arenicola marina L., Arenicola claparedii Levinsen and Arenicola Ecaudata Johnston

  title={The anatomy of the body wall and appendages in Arenicola marina L., Arenicola claparedii Levinsen and Arenicola Ecaudata Johnston},
  author={George P. Wells},
  journal={Journal of the Marine Biological Association of the United Kingdom},
  • G. P. Wells
  • Published 1 April 1950
  • Biology
  • Journal of the Marine Biological Association of the United Kingdom
Worms for dissection, or for museum preservation, should be prepared by the magnesium-formalin method, of which two modifications are given in the text. The body of Arenicola is differentiated into: ( a ) an achaetous ‘head’, comprising the prostomium and a small number (probably two) of subsequent segments, ( b ) a ‘trunk’, composed of a number, varying somewhat with the species, of chaetigerous segments, and ( c ) a ‘ tail ’, which may or may not be chaetigerous according to the species. The… 
The anatomy and physiology of the gut of the polychaete Arenicola marina L
The gut of Arenicola marina, is a long straight tube stretching the entire length of the worm, which can be divided into five regions: the proboscis, oesophagus, stomach, intestine, jugular, muscular and glandular regions.
The morphology of the head, thorax, proboscis apparatus and pygidium of the maldanid polychaetes Clymenella torquata and Euclymene oerstedi
A system of description is suggested which aims to avoid ambiguity and to eliminate from future maldanid literature the type of confusion which exists in it at present.
The anatomy and histology of the nervous system and excretory system of the maldanid polychaetes Clymenella torquata and Euclymene oestedi
The nervous system of the maldanid polychaetes Clymenella torquata and Euclymene oerstedi and Caesicirrus neglectus retains its primitive association with the epidermis and shows only slight metamerism in the presence of larger collections of neurones opposite the parapodia.
Immunohistochemical and ultrastructural analysis of the muscular and nervous systems in the interstitial polychaete Polygordius appendiculatus (Annelida)
An investigation of the muscular and nervous systems of Polygordiidae found that a basiepithelial and non-ganglionic organization of the ventral nerve cord as well as an orthogonal nervous system represent plesiomorphic characters.
There is evidence that A. marina tends to separate into much smaller local populations with some degree of genetic differentiation, suggesting a genetic condition with manifold effects.
Muscular system in polychaetes (Annelida)
An analysis of the diversity of the muscular structure supports the hypothesis that the primary mode of life in polychaetes was epibenthic and the parapodial chaetae had a protective function.
Observations on the burrowing of Arenicola marina (L.).
The sequence of muscular contractions and the phases of burrowing are considered and the pressure is utilized at the anterior end of the worm both to aid passage through the sand and to anchor the head while the posterior segments are pulled into the burrow.
The role of oesophageal rhythms in the behaviour of the Arenicola ecaudata Johnston.
There is little evidence of a pacemaker role of the oesophagus in ecaudata, and if the movements of the extroverted and body wall are simultaneously recorded, they generally exhibit correlated outbursts of variable and fluctuating pattern, and very unlike the behaviour of the brainless extrovert.


The study of nephridia and genital ducts since 1895.
  • E. Goodrich
  • Biology, Medicine
    The Quarterly journal of microscopical science
  • 1945
It is concluded that, as long ago maintained by Vejdovsky, neither the embryonic nor the later nephridia are derived from the coelomesoblast.
The rôle of the body fluid in relation to movement in soft-bodied invertebrates I. The burrowing of Arenicola
  • G. Chapman, G. Newell
  • Environmental Science
    Proceedings of the Royal Society of London. Series B - Biological Sciences
  • 1947
It is shown that the forces available to the worms are insufficient to allow of straight-forward burrowing and that the ability to burrow depends on the thixotropic properties of the muddy sand in which the animals live.
XXVI.—The Polychæta Sedentaria of the Firth of Forth
The studies of which the results are here set forth were carried on at the Granton Marine Laboratory of the Scottish Meteorological Society, in the years 1886 and 1887. Our memoir is by no means a
The Giant Axons of Annelids
  • J. Nicol
  • Biology
    The Quarterly Review of Biology
  • 1948
Department of Zoology, University of British Columbia, Vancouver T HE very large nerve cells and fibres which occur in many species of annelids have always aroused considerable interest and have been
The behaviour of Arenicola marina L. in sand, and the role of spontaneous activity cycles
Worms were allowed to burrow in sand in the laboratory and the general form of their burrows resembled that found in the field, and it is inferred that the first phase consists of tailward locomotion to the sand surface and the second to headward irrigation accompanied by gentle creeping back to the feeding point.
Faune de France
Five small groups of torieoptera which the author regards as constituting separate families are dealt with in the Faune de France series of monographs, well up to the standard of its predecessors.
A contribution to our knowledge of the life history of Arenicola marina L.
The breeding season of the lugworms of the Whitstable area is a sharply defined one, extending for 14 days between the new moon and full moon spring tides in the second half of October, where from August onwards to the end of October 98% of the adult worms are ripe.
XXV. On burrowing and boring marine animals
  • E. Osler
  • Environmental Science
    Philosophical Transactions of the Royal Society of London
  • 1826
The neighbourhood of Swansea offers remarkable facilities for observing the habits of the burrowing marine animals. Many Spatangi, innumerable Annelides, and a variety of bivalves are found on its
On chlorocruorin and haemoglobin
  • H. Fox
  • Biology, Computer Science
    Proceedings of the Royal Society of London. Series B - Biological Sciences
  • 1949
The first time that two respiratory pigments have been found in the blood of one animal is found, and in Serpula the oxygen affinities of the chlorocruorin and haemoglobin are the same as one an other.
Respiratory Movements of Arenicola Marina L.: Intermittent Irrigation of the Tube, and Intermittent Aerial Respiration
The worms were housed in glass U-tubes, and were able to get a supply of aerated water from above by making pumping movements. The water movements were recorded kymographically. The experiments