Other formats

    Adobe Portable Document Format file (facsimile images)   TEI XML file   ePub eBook file  

Connect

    mail icontwitter iconBlogspot iconrss icon

A Contribution to the Life History of Bucephalus longicornutus (Manter, 1954)

[Hosts]

Two gravid specimens and the posterior half of another gravid specimen of Bucephalus longicornutus (Manter, 1954) were recovered from experimentally infected Scorpaena cardinalis Richardson. The definitive host was found to be Kathetostoma giganteum Haast, the mcnkfish, and examination of several specimens from different localities combined with the experimental material provided numbers of B. longicornutus for study as follows: from the intestine of Scorpaena cardinalis used as an experimental host, two complete specimens in one host, and the posterior half of a specimen in another host; from the intestine and pyloric caeca of Kathetostoma giganteum from Foveaux Strait, 74 specimens from 10 of 13 hosts; from K. giganteum from Cook Strait, one specimen from one of four hosts.

K. giganteum from Foveaux Strait showed a 77% incidence of infection, and in 38% of the infected specimens, 5 or more adult worms were recovered.

page 33

K. giganteum from Cook Strait showed a 25% incidence of infection and only one adult worm was recovered. This is a similar incidence of infection to that obtained by Manter (1954), who examined monkfish from Cook Strait.

A number of fish species were obtained from Foveaux Strait in order to determine whether the range of host species for B. longicornutus could be extended. These included three specimens of Physiculus bachus (Bloch and Schneider); two Trigla kumu (Lesson and Garnot); three Neophrinichthys latus (Hutton); one Genypterus blacodes (Bloch and Schneider); two Parapercias colias (Forster); and two Arnoglossus scapha (Forster). However, no bucephalid infections were found. It was not possible to obtain a large number of each host species and thus the zero infection found may not be significant.