| the metazoan parasites of stellifer minor (tschudi, 1844): an ecological approach. | a quantitative and qualitative analysis of the parasite fauna of the sciaenid stellifer minor (tschudi) from chorrillos, perú, was made. some characteristics of the infectious processes, in terms of intensity and prevalence of infection, as a function of host sex and size, are given. moreover, comments on the characteristics of the parasite fauna, related with host role in the marine food webs are included. the parasite fauna of stellifer minor taken off chorrillos, perú, include the monogeneans ... | 1990 | 2134702 |
| [new data on trematodes of the families opecoelidae and accacoeliidae from fishes in atlantic ocean and its seas]. | the additions concerning the morphological characters and measurements of anomalotrema koiae, helicometra fasciata, accacladocoelium macrocotyle, a. petasiporum, and paraccacladium jamiesoni have been made. podocotyle atomon (rud., 1802) in gaevskaya, umnova, 1977 described from sebastes marinus from the northwest atlantic is considered as anomalotrema koiae. helicometra fasciata is found in mugilidae for the first time. accacladocoelium macrocotyle and a. petasiporum are found in the new region ... | 2002 | 12173452 |
| [parthenogenetic generations of helicometra fasciata rud., 1819 (trematoda: opecoelidae) in the black sea molluscs gibbula adriatica]. | morphology of the helicometra fasciata rud., 1819 parthenogenetic generation from the black sea gastropods gibbula adriatica (phil.) was studied for the first time. data on seasonal dynamics of the hemipopulation of daughter sporocysts are given. daughter sporocysts of h. fasciata infest 10 +/- 0.2 % of g. adriatica (mainly specimens of larger size and elder age classes). as a rule, local microhemipopulations of daughter sporocysts castrate mollusc hosts. reproduction of h. fasciata daughter spo ... | 2008 | 18543805 |
| digenean diversity in labrid fish from the bay of bizerte in tunisia. | six species of digeneans (proctoeces maculatus (looss, 1901), helicometra fasciata (odhner, 1902), helicometra pulchella (odhner, 1902), macvicaria alacris (looss, 1901), peracreadium genu (nicoll, 1909) and zoogonus rubellus (olson, 1868)) were found for the first time in labrid fish (symphodus tinca (linnaeus, 1758), labrus merula (linnaeus, 1758) and labrus viridis (linnaeus, 1758)) from the bay of bizerte. except for p. maculatus and z. rubellus, which are limited to the rectum, these helmin ... | 2010 | 19580692 |
| sperm ultrastructure of helicometra epinepheli (platyhelminthes, digenea, opecoelidae), parasite of epinephelus fasciatus (pisces, teleostei). | this paper describes the ultrastructure of the mature spermatozoon of the digenean helicometra epinepheli. the ultrastructural elements observed are: two axonemes with a 9+"1" pattern of trepaxonemata, four attachment zones, a nucleus, two mitochondria, external ornamentation of the plasma membrane, spine-like bodies and cortical microtubules. a particularity of this spermatozoon is the presence of an apical cone. however, the spermatozoon presents the general pattern of the opecoelidae and thus ... | 2011 | 21692034 |
| temporal and spatial changes in the composition and structure of helminth component communities in european eels anguilla anguilla in an adriatic coastal lagoon and some freshwaters in italy. | the composition and diversity of the helminth component communities in eels anguilla anguilla were determined in three separate localities in italy: an adriatic coastal lagoon, comacchio and two freshwater localities, the river po and the lake piediluco. data from comacchio lagoon were analysed over 15 years to determine whether community composition and diversity changed significantly overtime. the community was species rich (nine species, all marine except proteocephalus macrocephalus) and was ... | 2014 | 24135871 |
| molecular characterization of two opecoelid trematodes from fishes in the gulf of mexico, with a description of a new species of helicometra. | the plagioporine opecoelids helicometra fasciata (rudolphi, 1819) odhner, 1902, and macvicaria crassigula (linton, 1910) bartoli, bray, and gibson, 1989 have been reported from fishes in expansive geographic regions, disjointed from their type localities. new material of m. crassigula was collected from near its type locality as well as specimens resembling helicometra fasciata sensu lato from three triglids in the gulf of mexico. comparisons of the ribosomal dna (rdna) sequences, comprising the ... | 2014 | 25119353 |