Titlebook: Reproductive Strategies and Developmental Patterns in Annelids; Adriaan W. C. Dorresteijn,Wilfried Westheide Book 1999 Springer Science+Bu

defeatist

Reproduction and development in Cirratulidae (Annelida: Polychaeta),re poorly investigated; most observations are anecdotal comments on presence, color or size of oocytes, less frequently sperm, and are based on light-microscopical studies; sperm ultrastructure has been described for only one species of .; cirratulid oocytes have not been studied ultrastructurally.

項(xiàng)目

清洗

excursion

Polychaete aquaculture and polychaete science: a mutual synergism,yopreservation of the larvae of marine polychaetes, for photoperiodic manipulation of the time of breeding and optimisation of the growth process. The information derived from these studies also suggests a re-interpretation of the life cycle of the Nereididae. The ongoing development of commercial c

楓樹(shù)

Sperm types and their use for a phylogenetic analysis of aquatic clitellates,erior acrosome. Other sperm characters are shared by various combinations of taxa. With the aim of using sperm morphology as a tool for phylogenetic analysis, we identified 22 sperm characters in 21 species belonging to 12 clitellate families: Capilloventridae, Enchytraeidae, Tubificidae (with repre

Peculate

myalgia

貝雷帽

Systematization of the Annelida: different approaches,istic analysis are outlined and discussed. (2) D. McHugh uses the sequence of a nuclear gene, elongation factor-la, for phylogenetic analysis by the parsimony and neighbour joining methods. The main message from phylogenetic analyses of molecular data is that there is no evidence for a monophyletic

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