نتایج جستجو برای: menaethiops nodulosus
تعداد نتایج: 37 فیلتر نتایج به سال:
In the present study, Kabir kuh Section, related to the Seymareh or Lopha Limestone member (Gurpi Formation) have been Selected. The member has yielded a rich echinoid fauna and 21 species of Echinoid belonging to 14 genera are recognized and described. The Kabir Kuh section yielded two regular echinoid taxa: Salenia nutrix and Goniopygus superbus, one holectypoid taxa: Coptodiscus noemiae, two...
Helminth parasites of teleost fish have evolved strategies to evade and manipulate the immune responses of their hosts. Responsiveness of fish host immunity to helminth antigens may therefore vary depending on the degree of host-parasite counter-adaptation. Generalist parasites, infective for a number of host species, might be unable to adapt optimally to the immune system of a certain host spe...
Stable isotope analysis of commercially and ecologically important fish can improve understanding of life-history and trophic ecology. However, accurate interpretation of stable isotope values requires knowledge of tissue-specific isotopic turnover that will help to describe differences in the isotopic composition of tissues and diet. We performed a diet-switch experiment using captive-reared p...
In a study of the parasite fauna of the European eel (Anguilla anguilla L.) in northwest Spain, we found frequent mixed infection of branchial tissues by the myxosporidian Myxidium giardi (prevalence 95%) and by two monogeneans (Pseudodactylogyrus anguillae and P. bini; joint prevalence 56%). All three species are common parasites in this host. In one of the 323 eels examined, hyperparasitism o...
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