ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Temporal variation in parasite loading in relation to life history patterns of Littorina obtusata and L. fabalis (1998)
    Springer
    Hydrobiologia 378 (1998), S. 115-127 
    Details
    ISSN: 1573-5117
    Keywords: life history ; Littorina ; parasite ; temporal ; trematode
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Parasitic infection of Littorina obtusata (L.) and Littorina fabalis Turton by larval digeneans was studied in summer (August) and winter (February) on a sheltered shore at St Michael's Island, Isle of Man. Sampling was timed to investigate parasite loading at different stages of the littorinids' life history. Nine species of digeneans were identified and infection rates were similar between the species, with a slightly higher prevalence in females for L. obtusata and males in L. fabalis. Temporal differences in infection were small, although metacercariae and degenerate infections were greater in female L. obtusata in February. Analysis of shell parameters and size of the penis in males and the pallial oviduct in females revealed morphological differences between parasitised and uninfected individuals. Parasitic stunting of the penis was evident in both species and the pallial oviduct was also smaller in parasitised females. There was also a tendency for parasitised individuals to have larger shells; although size also varied with season for L. fabalis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003297807306
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The relationship between flat periwinkle life histories and digenean infections (1990)
    Springer
    Hydrobiologia 193 (1990), S. 183-190 
    Details
    ISSN: 1573-5117
    Keywords: Littorina obtusata ; Littorina mariae ; parasite ; trematode
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Larval digenean parasites were studied in Littorina obtusata (L.) and L. mariae Sacchi & Rastelli at Sawdern Point in West Wales. Shell parameters, ovipositor and shell colour, penis morphology and sex ratios were scored, and the influence of parasitism studied. A total of 7 species of parasites were found, although the prevalence was very low in L. mariae, especially in the females. The parasitic gigantism that has been described in other species of gastropod was not found in this study. Parasitic castration does occur in some infected male L. obtusata, resulting in severe stunting of the penis. However, this phenomena was never observed in L. mariae. The winkle species are congeneric and inhabit broadly similar niches on the shore; their life histories are however quite different — one being annual and the other perennial. This probably affects exposure to infection, and might explain the differing prevalence of the parasites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00028075
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...