triclad


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triclad

an order of TURBELLARIANS with well-developed sense organs; the planarians.
References in periodicals archive ?
The effect of temperature on the life-cycle of four species of lake-dwelling triclads.
Sperm resorption in triclads (Platyhelminthes, Tricladida).
The embryonic development of the triclad Schmidtea polychoa.
Morphological descriptive studies on the embryonic development of freshwater triclads have, until now, been mainly undertaken in organisms of the families Planariidae (Planaria and Polycelis) and Dendrocoelidae (Dendrocoelum).
The embryonic development of triclads denotes a very variable duration, being slower at low temperatures.
tigrina we observed this irregular segmentation followed by aggregation into a solid blastema, as described for some other triclads (Thomas, 1986).
In triclads, asynchronous development in eggs of the same cocoon can occur (Benazzi and Gremigni, 1982), but in G.
The morphological changes documented on the cocoons of triclads came mainly from detailed studies in P.
Triclads and polyclads occur generally on hard bottom, under stones, or associated with macrophytes, algae or gravel (Hyman, 1951; Du-Bois Reymond Marcus and Marcus, 1968).
Freshwater and land triclads were studied mainly in the Brazilian states of Sao Paulo and Rio Grande do Sul (Carbayo and Froehlich, 2008; Baptista et al.
In contrast to triclads and polyclads, which are collected directly, microturbellarians should be sampled with some substratum using a fine-meshed sweep-net (Young, 2001).
The relationship between ration, reproductive effort, and age-specific mortality in the evolution of life-history strategies--some observations on freshwater Triclads.