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It is argued that Penicillus indicus Kumar et Hameed, 1993 represents two species; a member of Pennella Oken, 1815 (Pennellidae, Siphonostomatoida, Copepoda) with lepadid (Lepadidae, Lepadomorpha, Cirripedia) phoronts attached to its abdomen. This conclusion, while not founded on examination of the type and only specimens of P. indicus, seems robust based on observations that: 1) the species description of P. indicus is unquestionably similar to a combination of the aforementioned copepod and barnacle taxa, i.e. one copepod with several attached barnacles, 2) records of Pennella representatives with attached striped goose barnacles, Conchoderma virgatum (Spengler, 1790) (Lepadidae) are well known, and 3) this interpretation explains why the type series of P. indicus exhibits considerable intraspecific variation regarding numbers of appendages and numbers and placement of unusual abdominal organs. Based on this explanation, it is recommended that monotypic Penicillus Kumar et Hameed, 1993 and P. indicus be rejected as legitimate taxa and that the record of P. indicus be considered a unique report of a Pennella sp. infecting several species of sharks.
Birth deposits most future scientists within a standard deviation or so of average, with life proceeding with its typical bumps and ruts. For a few, however, life begins as or soon transpires into a Homeric challenge. Those who emerge from such beginnings to widely contribute to humanity become mankind’s cherished dignitaries... exemplars promulgating the legitimacy of hope and lending encouragement for progress. Zbigniew Kabata, an outstanding member of the Acta Ichthyologica et Piscatoria editorial community and who died at age 90 on the 4th of July 2014 in Nanaimo, British Columbia, Canada was such a giant.
It is rare for an ichthyoparasitologist to receive a country’s highest honor, and thus when such a scientist is honored more than once and by different countries the event becomes truly precious. On 29 July 2007, at the recommendation of the Advisory Council of the Order of Canada, Her Excellency the Right Honorable Michaelle Jean, Governor of Canada, announced the eminent Parasitologist and long-time Acta Ichthyologica et Piscatoria Editorial Board member Zbigniew “Bob” Kabata, PhD, DSc (retired, Pacific Biological Station, Nanaimo, British Columbia, Canada) as one of 47 new Members of the Order of Canada.
Background. Driocephalus cerebrinoxius is an unusual representative of an unusual family of parasitic copepods (Sphyriidae, Siphonostomatoida, Copepoda). This report documents new host and ocean records for D. cerebrinoxius and considers the phylogenetic relationships amongst sphyriid (Sphyriidae) genera.Materials and Methods. Copepods collected from trawl-caught fishes were studied using light microscopy and standard staining, manipulation, and measuring techniques. The phylogenetic analysis (parsimony outgroup analysis) was conducted using adult female morphological characteristics of sphyriid genera. Results. Driocephalus cerebrinoxius is reported for the first time from the Pacific Ocean and from the star-spotted smooth hound, Mustelus manazo (Triakidae, Carcharhiniformes). The cladistic analysis of sphyriid taxa resulted in 12 shortest trees, each with a length of 16 and consistency index of 0.875. Strict and majority rule consensus trees are presented. Conclusion. Due to the paucity of morphological characters available for analysis, a robust phylogenetic hypothesis for taxa comprising Sphyriidae is best sought using molecular tools. Without a robust phylogeny it is premature to undertake associated analyses regarding historical ecology within Sphyriidae.
Background. Sea lice (Copepoda: Caligidae) are important pathogens in aquaculture, and because more fish species are being intensively cultured, more species of sea lice are recognized as pathogens. The aim of the present study was to gather baseline data regarding the effects of sea lice on a valuable sciaenid (Sciaenidae), the black drum, Pogonias cromis, by describing lesions associated with naturally occurring infections of Sciaenophilus tenuis van Beneden, 1855. Materials and Methods. Gross and histological examinations of copepods and lesions were made using light and scanning electron microscopy from samples collected from eight infected black drum captured in Mississippi Sound, northern Gulf of Mexico. Results. Adult females of S. tenuis were associated with a mucosal lesion on interopercula. Female copepods attached to folds of mucosa on the posterior half of interopercula with cephalothoraces directed anteriorly in parallel with the longitudinal axis of fish. All attached male copepods grasped the abdomen or genital complex of females and were not in contact with the host. Maxillipeds of female copepods were embedded in epithelium or subepithelial connective tissue and functioned as the primary attachment appendages. Epithelial hyperplasia, fibrosis of subepithelial connective tissue, and chronic inflammatory infiltrates including presumed eosinophilic granular cells surrounded maxillipeds, indicative of long-term, focal, parasite-host interaction. Conclusion. Aquaculture managers should regard S. tenuis as a potentially serious pathogen if fish develop intense S. tenuis infections associated with extensive gross lesions.
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