A novel monoclonal Perkinsus chesapeaki in vitro isolate from an Australian cockle, Anadara trapezia

A monoclonal Perkinsus chesapeaki isolate was established from 1 of 10 infected Australian Anadara trapezia cockles. Morphological features were similar to those of described P. chesapeaki isolates, and also included a unique vermiform schizont cell-type. Perkinsus olseni-specific PCR primers amplified DNAs from all 10 cockles. Perkinsus chesapeaki-specific primers also amplified DNAs from 4/10 cockles, including … Continue reading A novel monoclonal Perkinsus chesapeaki in vitro isolate from an Australian cockle, Anadara trapezia

Haplosporidia

Haplosporidian species (phylum Haplosporidia Caullery & Mesnil, 1899) are a small group of four genera of sometimes pathogenic protozoan parasites usually with uninucleated spores. They are widely distributed in marine and freshwater invertebrates, although their status in Africa, much of Eurasia and Central and South America, is largely unknown. They infect molluscs including commercially important … Continue reading Haplosporidia

First haplosporidan parasite reported infecting a member of the Superfamily Pinnoidea (Pinna nobilis) during a mortality event in Alicante (Spain, Western Mediterranean)

Several stages of a haplosporidan parasite, including spores, were detected infecting three out of four specimens of the Pen Shell Pinna nobilis from the coast of Alicante (Western Mediterranean). A mortality event initiated few weeks before the sampling. The infection was systemic in the connective tissue, with free uni-nucleate stages and early plasmodia, whereas sporulation … Continue reading First haplosporidan parasite reported infecting a member of the Superfamily Pinnoidea (Pinna nobilis) during a mortality event in Alicante (Spain, Western Mediterranean)

The oyster immunity

Oysters, the common name for a number of different bivalve molluscs, are the worldwide aquaculture species and also play vital roles in the function of ecosystem. As invertebrate, oysters have evolved an integrated, highly complex innate immune system to recognize and eliminate various invaders via an array of orchestrated immune reactions, such as immune recognition, … Continue reading The oyster immunity

Parasitism by a Digenea in Lucina pectinata (Mollusca: Lucinidae)

Lucina pectinata is an important economic resource in the Brazilian coast. This study reports parasitism caused by a Digenea in this species. The specimens (n = 470) were collected in December 2012 in a mangrove swamp of the Cachoeira River estuary, Bahia, Brazil. They were measured along the anterior-posterior axis (length), and after macroscopic analysis … Continue reading Parasitism by a Digenea in Lucina pectinata (Mollusca: Lucinidae)

Effect of infection with Metacercariae of Himasthla elongata (Trematoda: Echinostomatidae) on cardiac activity and growth rate in blue mussels (Mytilus edulis) in situ

Trematode parasites can affect their molluscan hosts, which serve as the first intermediate hosts in their life cycles, in manifold ways, but little is known about trematode-induced effects on their second intermediate hosts. Experimental infection of blue mussels Mytilus edulis serving as second intermediate hosts for larval stages (metacercariae) of the trematodes Himasthla elongata was … Continue reading Effect of infection with Metacercariae of Himasthla elongata (Trematoda: Echinostomatidae) on cardiac activity and growth rate in blue mussels (Mytilus edulis) in situ

Diagnosis and Control of Diseases of Fish and Shellfish

There has been a continual expansion in aquaculture, such that total production is fast approaching that of wild-caught fisheries. Yet the expansion is marred by continued problems of disease. New pathogens emerge, and others become associated with new conditions. Some of these pathogens become well established, and develop into major killers of aquatic species. Diagnosis … Continue reading Diagnosis and Control of Diseases of Fish and Shellfish