+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The didemnid ascidian fauna of france

, : The didemnid ascidian fauna of france. Annales de l'Institut Oceanographique 63(1): 1-46

The 27 Didemnid species found on the French coasts are described and illustrated in drawings, according to the probable sequence of the appearance of the genera in the course of evolution. One of these species, Diplosoma carnosum Von Drasche, 1883, was only found recently on the French coasts. A new synonymy has been established between Polysyncraton asterix Monniot, 1974, and Polysyncraton canetense Brement, 1913. We recall the problems of identification characterizing this very homogeneous group of Ascidans, and give simplified diagnoses of genera and species. The main evolutionary trend consists of a gradual coiling of the sperm duct seemingly correlated with that lengthening of the alimentary canal, accompanied by a decrease of the number of tentacles around the base of the oral siphon and a general reduction on zooid size. The Dideminids orginate from the family of the Polycitoridae: thus, the present tropical genus Echnoclinum, the oldest of the Didemnids, is a descendant of the Polycitorid genus Cystodytes, Echinoclinum existed in what in now France during the Eocene age (upper Ypresian, Cuisian, of th Paris Basin), but has now disappeared from the French coasts.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006628893

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Ziminska, Z.; Bakuniak, E.; Turos Biernacka, M., 1997: Greenhouse experiments to elaborate new herbicide composition against main weeds in winter oilseed rape. Greenhouse experiments were conducted to evaluate the activity and phytotoxicity of postemergence herbicides (Lontrel 300 [clopyralid], Perenal 104 EC [of unstated composition] and Targa Super 5 EC [quizalofop-P]) for weed control in oilseed rape...

Silbereisen, R., 1983: Fruit size-specific reaction of apple cultivars to changes in fruit load under non-optimal temperature climatic conditions. Fruitlets in Belle de Boskoop, Cox's Orange Pippin and Golden Delicious (but not Jonathan) apple clusters thinned selectively by hand to 20 cm apart after petal fall were larger at the June drop than those in clusters thinned to 10 cm apart....

Bakshi, S. K.; Singh, B.; Puri, Y. N., 1958: Occurrence of Polyporus leucospongia in India. Polyporus leucospongia Cooke and Harkness, a wood-rotting fungus heretofore known only from montane and subalpine zones in North America, is reported to occur commonly in India in temperate regions above 6000 ft. in the Western Himalayas, on stump...

Kemp, Ms; Rius-Alonso, C; Wain, Rl, 1975: Studies on plant growth-regulating substances. XXXVII-I. 1,1-dichloro-2-phenoxyethanes, alpha, alpha-dichlorotoluenes, and 1,1-dihalo-2-phenylethanes. Annals of applied biology: 80 (3) 311-315

Velichkin, P. A.; Troyan, I. K., 1971: Forecasting the occurrence of infections of farm animals (including poultry) by Ascaridae. II.. This paper advocates the ecological approach to epidemiological problems of infection with Ascaridae. Studies of the survival and development of the eggs outside the host at different temperatures, amounts of moisture, soil and vegetation provided...

Haxby J.A.; Kolb W.P., 1972: The membrane attack system of complement fluid phase interaction between 8th component of complement and 9th component of complement. Federation Proceedings 31(2): 740

Sachteleben, Jens; Von-Helversen, Otto, 2000: Songflight behaviour and mating system of the pipistrelle bat Pipistrellus pipistrellus in an urban habitat. The songflight and the territorial behaviour of courting male pipistrelles (Pipistrellus pipistrellus) were observed in an urban habitat of this bat species, in the city of Bayreuth in Bavaria. (1) Within the city limits, from the middle of July...

Mertens, Ilse; Ballaux, Dominique; Funahashi, Tohru; Matsuzawa, Yuji; Van-Der-Planken, Marc; Verrijken, An; Ruige, Johannes, B.; Van-Gaal, Luc, F., 2005: Inverse relationship between plasminogen activator inhibitor-I activity and adiponect in overweight and obese women - Interrelationship with visceral adipose tissue, insulin resistance, HDL-chol and inflammation. Adipose tissue is an active endocrine organ secreting different adipokines such as plasminogen activator inhibitor-I (PAI-1) and adiponectin, among many others. In this study, we investigated the association between PAI-I activity and serum adipon...

Yamamoto K.; Mamelak A.N.; Quattrochi J.J.; Hobson J.A., 1990: A cholinoceptive desynchronized sleep induction zone in the anterodorsal pontine tegmentum spontaneous and drug induced neuronal activity. The effect of carbachol microapplication (4 .mu.g/250 nl per 90 s) on the discharge of neurons in the anterodorsal pons of four cats was studied using a newly devised microinjector-microelectrode assembly. Neurons were classified according to the...

Withagen, Cees; Asheim, Geir B.; Buchholz, Wolfgang, 2003: On the sustainable program in Solow's model. We show that our general result (Withagen and Asheim (1998)) on the converse of Hartwick's rule also applies for the special case of Solow's model with one capital good and one exhaustible resource. Hence, the criticism by Cairns and Yan...