Fouling Polychaetes in Tanjung Priok Port of Jakarta, Indonesia

Fouling polychaetes in Tanjung Priok Port, Jakarta and their status were studied in order to update the list of marine alien species in Indonesia. Polychaetes were collected using six PVC panels that were submerged at a depth of 0.5 m over three months in Jakarta Bay. Polychaetes were identified to the lowest taxon possible based on characteristics of external morphology. The geographical distribution of identified polychaetes was then determined based on taxonomic literature in order to justify whether they were native or alien species for Indonesian waters. Twelve fouling polychaetes belonging to nine families are reported here. Of these, nine species (i.e., Chrysopetalum debilis, Eunice hirschi, Ceratonereis mirabilis, Leonnates decipiens, Polyophthalmus pictus, Eulalia (Eumida) sanguinea, Lepidonotus tenuisetosus, Hydroides elegans, and Polydora ciliata) were native species, while three other taxa (i.e., Namanereis sp., Hypsicomus sp. 1, and Hypsicomus sp. 2) were undetermined.

Seasonality and host–parasite interrelationship of Mytilus galloprovincialis parasites in Turkish Black Sea coasts

This is the first comprehensive research study on the parasites of Mytilus galloprovincialis collected from the Sinop coasts of the Black Sea and their relationships with several environmental and biotic factors. A total of 1740 mussels were collected monthly at three sampling localities representing different ecosystems in the period between August 2012 and July 2013 and examined for parasites. Identified parasites were Nematopsis legeri, Peniculistoma mytili, Urastoma cyprinae, Parvatrema duboisi and Polydora ciliata. Infection prevalence (%), mean intensity and mean abundance values of each parasite species were calculated according to season, sampling localities and length classes of mussel. Nematopsis legeri was the most prevalent species (32.5%), followed by Pe. mytili (6.70%), U. cyprinae (6.30%), Pa. duboisi (4.50%) and Po. ciliata (2.20%). Nematopsis legeri and Parvatrema duboisi had their highest infection prevalence and intensity values in sampling locality III where secondary hosts present to complete their life cycle and larger sized mussels had higher parasite loads. Statistically significant differences were determined in the prevalence of infection and intensity values among seasons, length classes of mussel and sampling localities of each parasite species. The present study provided valuable information on mussel parasites and their relationships with host length, seasons and ecology.

Systematics and ecology of species of the Polydora-complex (Polychaeta: Spionidae) of the Black Sea

The taxonomic, morphological, biological, behavioural and ecological characteristics of three species of spionid poly-chaetes from the Black Sea belonging to the Polydora-complex are summarised and discussed on the basis of the author′scollections along Romanian coasts as well as on material from other parts of the Black Sea. It is apparent that at least twospecies have been included under the name′Polydora ciliata′ in the Black Sea literature. All previous records of Polydorathat bore into calcareous substrates are most likely Polydora websteri. The individuals building muddy tubes on all typesof substrata at depths less than 20 m, previously identified as P. ciliata or P. limicola, are P. cornuta. The presence of trueP. ciliata in the Black Sea is questionable and older records must be re-evaluated. Dipolydora quadrilobata is a new recordfor the Romanian coast of the Black Sea, and has established dense populations in deeper (>30 m) soft bottom sediments.Descriptions and figures of these species, as well as a key to actual species of the Polydora-complex occurring in the Black Sea, are provided.