The Astacus leptodactylus specimens were collected from four sites of Aras reservoir, North-West of Iran and examined for the epibionts during 2009. Protozoan epibionts from ciliophora (one genus and seven species) and tracheophyta were isolated from the cuticular surface of different body parts of narrow-claw crayfish, A.leptodactylus. Seasonal prevalence of infestation was determined in 394 i...

The hydrothermal vents on the East Scotia Ridge are the first to be explored in the Antarctic and are dominated by large peltospiroid gastropods, stalked barnacles (Vulcanolepas sp.) and anomuran crabs (Kiwa sp.) but their food webs are unknown. Vent fluid and macroconsumer samples were collected at three vent sites (E2, E9N and E9S) at distances of tens of metres to hundreds of kilometres apar...

The tissue reaction to four suture materials placed in the skin of juvenile loggerhead sea turtles, Caretta caretta, was evaluated both grossly and histologically. Chromic gut, polyglyconate, polyglactin 910, and poliglecaprone 25 were used in 258 turtles to close a wound produced at the time of laparoscopic sex determination. Gross tissue reactions were graded in 68 turtles at one week, and in...

The hormathiid sea anemone Allantactis parasitica was found living as an epibiont on numerous species of gastropods at depths of 725– 1100 m along the continental slope of eastern Canada. The proportion of bathyal gastropods hosting 1–6 sea anemones reached 72.5% in a single trawl. Although A. parasitica was occasionally found on other substrata (i.e. empty shells, pebbles), laboratory trials c...

A survey was carried out on the prevalence of bacteria and ciliate protozoan of Pellaells indiclls obtained from Ennore estuary, Chennai (Madras), India from November 1989 to July 1992. The study r~vealed the occurrence of Vibrio parahaemolyticus, V. VUlllijiCUS, V. harvey;, V. allguillarum, V. damsela, Pseudomollas sp., P. aemgillo.\'{/ and a tilamentous bacterium Leucothrix sp. This study als...

Sea turtles are widely distributed in temperate and tropical seas, and their carapace is often colonized by species of macroalgae. There have been several studies on the epibionts of loggerhead turtles, Caretta caretta Linnaeus, from different parts of the world (KITSOS, et al., 2005; PFALLER et al., 2006, 2008). The carapaces of loggerhead turtles represent an important substratum for a variet...

The branched periphytic green alga Cladophora glomerata, often abundant in nearshore waters of lakes and rivers worldwide, plays important ecosystem roles, some mediated by epibiotic microbiota that benefit from host-provided surface, organic C, and O2 . Previous microscopy and high-throughput sequencing studies have indicated surprising epibiont taxonomic and functional diversity, but have not...

Hydractinia symbiolongicarpus, a colonial cnidarian (class Hydrozoa) epibiont on hermit crab shells, is well established as a model for genetic studies of allorecognition. Recently, two linked loci, allorecognition (alr) 1 and alr2, were identified by positional cloning and shown to be major determinants of histocompatibility. Both genes encode putative transmembrane proteins with hypervariable...