Predation of the shelduck Tadorna tadorna on the mud snail Hydrobia ulvae

2008 ◽  
Vol 43 (4) ◽  
pp. 1193-1199 ◽  
Author(s):  
N. R. Anders ◽  
T. Churchyard ◽  
J. G. Hiddink
Keyword(s):  
Hydrobia Ulvae ◽  
Mud Snail

Measurement of ingestion rate of Hydrobia ulvae (Pennant) on intertidal epipelic microalgae: the effect of mud snail density

2000 ◽  
Vol 255 (2) ◽  
pp. 247-260 ◽  
Author(s):  
Gérard F Blanchard ◽  
Jean-Marc Guarini ◽  
Laurent Provot ◽  
Pierre Richard ◽  
Pierre-Guy Sauriau
Keyword(s):  
Ingestion Rate ◽  
Snail Density ◽  
Hydrobia Ulvae ◽  
Mud Snail

TheHydrobia ulvae–Maritrema subdolumassociation: cercarial emergence controlled by host activity

2002 ◽  
Vol 76 (4) ◽  
pp. 349-353 ◽  
Author(s):  
K.N. Mouritsen
Keyword(s):  
Experimental Data ◽  
Adaptive Significance ◽  
Published Data ◽  
Hydrobia Ulvae ◽  
Mud Snail ◽  
Emergence Rate ◽  
Presence And Absence ◽  
Marine Mud ◽  
Cercarial Emergence

AbstractThe release ofMaritrema subdolumcercariae (Digenea: Microphallidae) from the marine mud snailHydrobia ulvaeis significantly affected by temperature, salinity, light and exudates from the second intermediate amphipod host. Based on (i) previously published data on temperature–salinity dependentH. ulvaeactivity, (ii) new experimental data onH. ulvaeactivity in light and darkness as well as in the presence and absence of host exudates, and (iii) the cercarial emergence rate from free moving snails and snails prevented from crawling, the present analysis indicates that emergence ofM. subdolumlarvae is regulated mainly by host activity as the ultimate factor for release. The adaptive significance of such an emergence strategy is emphasized.

Interference competition in the intertidal mud snail Hydrobia ulvae: egestion rates revisited

2001 ◽  
Vol 81 (3) ◽  
pp. 491-495 ◽  
Author(s):  
R.S.K. Barnes
Keyword(s):  
Natural Population ◽  
Marked Reduction ◽  
Interference Competition ◽  
Resource Limitation ◽  
Average Density ◽  
Field Population ◽  
Hydrobia Ulvae ◽  
Mud Snail ◽  
Laboratory Populations ◽  
Local Range

Egestion in the intertidal mud snail Hydrobia ulvae was investigated under conditions in which coprophagy did not occur, both in laboratory populations (comprising 11 experimental densities from 1000 to 120,000 ind m−2) and in a field population with an average density of 50,000 ind m−2 (24 test densities spanning the local range of <5000–>120,000 ind m−2). In contrast to an earlier study that suggested marked reduction in egestion rate in H. ventrosa as a consequence of interference competition, no such effect occurred in the natural population of H. ulvae, or in the experimental populations except at densities of at least 100,000 ind m−2. Neither did any significant increase in inactivity or movement off the experimental substrata occur with increasing density. These results are discussed in relation to resource limitation in natural densities of mud snails.

Three sulphated polysaccharides isolated from the mucilage of mud snail, Bullacta exarata philippi: Characterization and antitumour activity

2013 ◽  
Vol 138 (1) ◽  
pp. 306-314 ◽  
Author(s):  
Daihui Zhang ◽  
Chong Wang ◽  
Hongxi Wu ◽  
Jingli Xie ◽  
Lei Du ◽  
...  
Keyword(s):  
Antitumour Activity ◽  
Sulphated Polysaccharides ◽  
Mud Snail ◽  
Bullacta Exarata
Sign in / Sign up

Export Citation Format

Share Document