Nematode parasites of vertebrates: their development and transmission

Abstract

The first edition of this book was published in 1992 (see Helminthological Abstracts (1993) 62, abstract 1457). This new enlarged edition includes additional relevant information from some 450 articles published between 1989 and 1998 (with a few from 1999), and some articles overlooked or unavailable for the first edition. The number of species covered has been increased by 34 (total now 595). As before, the book is in 2 parts, the Secernentea and Adenophorea, which are now regarded as classes rather than subclasses. The Secernentea covers the orders Rhabditida, Strongylida, Oxyurida, Ascaridida and Spirurida (suborders Camallanina and Spirurina), and the Adenophorea covers the order Enoplida, with the Dioctophymina and Trichinellina now treated as separate suborders. The aim of the book remains "to summarize and synthesize knowledge of the basic features of the development and transmission of parasitic nematodes of vertebrates, and to place this information in the context of the modern classification as found in the CIH Keys to the Nematode Parasites of Vertebrates" [but see the 2 departures from these keys as noted above]. Nematode parasites of humans, domestic animals and wildlife (including fish) are covered. Each chapter or part begins with an overview of the mode of feeding, habitat and life cycles of the group. This is followed by descriptions and illustrations of larval stages of named specific examples. The number of illustrations has been increased from 33 to 43. Comprehensive bibliographies appear at the end of the sections on each order or suborder.

Mapping the presence of Wolbachia pipientis on the phylogeny of filarial nematodes: evidence for symbiont loss during evolution

“…This tree is based on the results of our phylogenetic analyses, and is partially congruent with the relationships inferred from other phylogenetic analyses (e.g. Xie et al, 1994) and with morphology-based classifications (Anderson andBain et al, 1982). The positioning of Mansonella spp.…”

“…In addition, within this group we always observed a highly supported monophyletic group formed by A. viteae and A. reconditum. The genera Dipetalonema and Acanthocheilonema are thought to be closely related also on the basis of morphological characters (Anderson andBain et al, 1982).…”

“…The taxonomy used in this paper follows Anderson and Bain, 1976;Chabaud and Bain, 1976;Bain et al, 1982;Anderson, 2000 andGuerrero et al, 2003. Representatives of the two families which compose the superfamily Filarioidea (order Spirurida) were examined, as well as the genus Filaria in the family Filariidae, and 13 genera in the Onchocercidae.…”

“…These 13 genera are distributed into four of the eight subfamilies ( In addition, we included as an outgroup the genus Thelazia, which represents another branch of the order Spirurida: the superfamily Thelazioidea. This superfamily is thought to be closely related to the Filarioidea (Anderson, 2000). Its use as an outgroup for the Filarioidea is also justified by preliminary phylogenetic analyses of the order Spirurida based on ribosomal gene sequences (Casiraghi, unpublished observation).…”

Helminths inMesaspis monticola(Squamata: Anguidae) from Costa Rica, with the description of a new species ofEntomelas(Nematoda: Rhabdiasidae) and a new species ofSkrjabinodon(Nematoda: Pharyngodonidae)

“…To that list, M. monticola should be added. Species of Physaloptera have an indirect life cycle, infection is attained by the injection of infected insects (Anderson, 2000). Oligacanthorhynchid acanthocephalans are typically parasites of mammals; to our knowledge no species reaches maturity in reptiles; but cystacanths are frequently found embedded in tissues.…”