The population biology of Ostertagia ostertagi

Population dynamics of salmon lice Lepeophtheirus salmonis on Atlantic salmon and sea trout

“…McCauley et al 1996) and parasitic nematodes (e.g. Smith & Grenfell 1985). To facilitate such model development, we bring together the literature on L. salmonis in a quantitative review of the available experimental information on stagespecific development and mortality rates, and on fecundity of L. salmonis on Atlantic salmon Salmo salar L. and sea trout Salmo trutta L. Due to the low resolution of many datasets with respect to morphological stage and frequency of sampling, we group the 11 morphologically distinct stages into 6 functional groups (Fig.…”

Hypobiosis induction alters the protein profile of Ostertagia ostertagi (Nematoda: Trichostrongylidae)

“…The arrestment time corresponds to the unfavourable period (Armour 1980, Armour and Duncan 1987, Suárez and Busetti 1989, Suárez 1990, Nari and Rizzo 1994, Fiel and Steffan 1994a. In the northern hemisphere, larvae are inhibited during the end of autumn and winter, renewing their development at the beginning of spring (Randall and Gibbs 1977, Armour 1980, Williams 1983, Smith and Grenfell 1985, Armour and Duncan 1987. On the other hand, in the southern hemisphere, larvae are inhibited in spring and part of the summer, renewing their development from the middle of summer until autumn (Armour 1980, Williams 1983, Smith and Grenfell 1985, Entrocasso 1986, Fiel et al 1988, Suárez 1990).…”

Exploitation of Adaptations of Animal Parasites - A Key towards Designing Effective Control Strategies against Parasitic Diseases of Animals

“…Usually exhibited by certain insects (Chapman, 1971;Romoser and Stoffolano, 1998) and nematodes like Nematodirrus battus (Evans and Perry, 1976;Wharton, 1986). (Smith and Grenfell, 1985) Anhydrobiosis: In anhydrobiosis, an organism lives in a dormant, desiccated state without any requirement of water. Coiling and clumping are the two important behavioural responses shown by nematodes in this state.…”