Fish typically evoke a flight response in copepods. The behaviour of infective stage parasitic copepods, Lepeophtheirus salmonis, and adult holoplanktonic copepods, Acartia spp., in response to the approach of a rubber fish mimic was compared. Responses were scored as attacks if the copepod moved closer to the head or escapes if it moved further from the head. The parasite attacked the mimic in...

This study examines whether plankton of the Lagoon of Venice could be considered as a bio-indicator of areas subjected to various anthropogenic influences. This study was a two year hydrochemical and biological survey in five areas of the Lagoon of Venice, each with different environmental conditions due to pollution from urban, industrial, thermal and agricultural wastes. Phytoplankton associa...

In Southampton Water the copepod Acartia bifilosa presents a diapause reproductive strategy, where there is a switch from subitaneous to diapause egg production around May, prior to the species’ disappearance from the water column between June and October. The effect of temperature and photoperiod on the production of diapause eggs by A. bifilosa was studied in an attempt to determine the prima...

Effects of habitat and acclimation temperature on cholesterol contents were examined in oceanic and inshore species of copepods. The cholesterol content of five species of thermally acclimated copepods was determined, and nine species (representing six families) were sampled to assess the role of habitat temperature. The species selected have maximum habitat temperatures (and temperature tolera...

.................................................................................................. 3 LIST OF PAPERS......................................................................................... 4 INTRODUCTION........................................................................................... 6 Biological invasions The Baltic Sea and the North American Great Lakes – invasion ho...

Abstract Sustainable fishery practices require accurate predictions of fish recruitment—the abundance a new year class entering fishery. A key driver recruitment is the impact predator-prey dynamics experienced during early life stages has on their survival at later stages, as in Match-Mismatch Hypothesis (MMH). MMH states that predator depends match (or mismatch) between timing feeding and pre...

The association of Vibrio cholerae with zooplankton has been suggested as an important factor in transmission of human epidemic cholera, and the ability to colonize zooplankton surfaces may play a role in the temporal variation and predominance of the two different serogroups (V. cholerae O1 El Tor and O139) in the aquatic environment. To date, interactions between specific serogroups and speci...

Acartia (Acartiella ) faoensis has been established by the author,(Khalaf, 1991) from Khor Al-Zubair and Abdulla NW Arabian Gulf. It passes through six copepodite stages identical with most other copepods; last stage is adult. Description, illustration measurements for every are presented.

Effects of food on bacterial community composition associated with the copepod Acartia tonsa Dana Kam Tang*, Claudia Dziallas, Kristine Hutalle-Schmelzer and Hans-Peter Grossart Virginia Institute of Marine Science, Gloucester Point, VA 23062-1346, USA Leibniz Institute of Freshwater Ecology and Inland Fisheries, 12587 Berlin, Germany Biological Sciences, University of Santo Tomas, Manila 1015,...

This study investigated feeding rates and selective feeding of the common copepod Acartia tonsa on mixtures of the heterotrophic dinoflagellate Protoperidinium cf. divergens and the cooccurring red-tide dinoflagellate Gonyaulax polyedra and predation effects of A. tonsa on the population growth of P cf. divergens during simulated red-tide and non-red-tide periods. Ingestion and clearance rates ...