Parasitic barnacles (Cirripedia: Rhizocephala) from New Zealand off‐shore waters
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منابع مشابه
Infestation of parasitic rhizocephalan barnacles Sacculina beauforti (Cirripedia, Rhizocephala) in edible mud crab, Scylla olivacea
Screening of mud crab genus Scylla was conducted in four locations (Marudu Bay, Lundu, Taiping, Setiu) representing Malaysia. Scylla olivacea with abnormal primary and secondary sexual characters were prevalent (approximately 42.27% of the local screened S. olivacea population) in Marudu Bay, Sabah. A total of six different types of abnormalities were described. Crabs with type 1 and type 3 wer...
متن کاملThe bigger, the better? Volume measurements of parasites and hosts: Parasitic barnacles (Cirripedia, Rhizocephala) and their decapod hosts
Rhizocephala, a group of parasitic castrators of other crustaceans, shows remarkable morphological adaptations to their lifestyle. The adult female parasite consists of a body that can be differentiated into two distinct regions: a sac-like structure containing the reproductive organs (the externa), and a trophic, root like system situated inside the hosts body (the interna). Parasitism results...
متن کاملThe cypris larvae of the parasitic barnacle Heterosaccus lunatus (Crustacea, Cirripedia, Rhizocephala): some laboratory observations.
Heterosaccus lunatus parasitizes the portunid crab, Charybdis callianassa in Moreton Bay, Australia. With the host crabs maintained at 22.5 degrees C this sacculinid rhizocephalan released larval broods every 6-7 days. During July-August 1996 and particularly August 1999 such broods showed the change-over from male only larvae in the early broods to females only in the later broods. As the host...
متن کاملTwo new species of scalpelliform barnacles (Cirripedia: Thoracica) from the Plio-Pleistocene of Cotentin, northwest France.
Two new species of pedunculate cirripede are described from the Plio-Pleistocene of Cotentin, northwest France. Scalpellum carentanensis sp. nov. is only the third species of this genus to be recorded from Pliocene strata in Europe. It is characterised by a triangular tergum with an apico-basal fold, without an outward extension, the inner surface of which has the raised part marked by wide gro...
متن کاملCirripede Cleavage Patterns and the Origin of the Rhizocephala (Crustacea: Thecostraca)
> Abstract Several aspects of phylogenetic relationships among barnacles (Cirripedia) are still unresolved. One of the contentious issues is the position of the parasitic Rhizocephala. In most molecular phylogenies Rhizocephala are resolved as sister group to a monophyletic Thoracica. However, since Rhizocephala are morphologically highly derived there is not a single morphological character su...
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ژورنال
عنوان ژورنال: New Zealand Journal of Marine and Freshwater Research
سال: 2009
ISSN: 0028-8330,1175-8805
DOI: 10.1080/00288330909510027