A New Species of Marine Leech (Hirudinida: Piscicolidae) from Giant Kelpfish, Heterostichus rostratus Girard, In Southern California

Burreson, Eugene M.; Passarelli, Julianne Kalman; Kim, Bernard

doi:10.1645/ge-3036.1

Cited by 5 publications

(1 citation statement)

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“…represents the first account of an ectoparasitic species from the Striped Kelpfish and Spotted Kelpfish, as well as the fourth ectoparasitic species reported from the Giant Kelpfish. The copepods Chondracanthus heterostichi Ho, 1972and C. horridus Heller, 1865(Chondracanthidae Milne Edwards, 1840 and the leech Heptacyclus cabrilloi Burreson, Kalman Passarelli & Kim, 2012(Piscicolidae Johnston, 1865 were previously recorded from the Giant Kelpfish (Wilson 1935;Ho 1972b;Burreson et al 2012). It must be noted, however, that Wilson's record of C. horridus on the Giant Kelpfish requires verification, as C. horridus was originally described from the Black Goby, Gobius niger Linnaeus, 1758 (as Gobius jozo Linnaeus, 1758) (Gobiidae Cuvier, 1816), from the Mediterranean Sea (Heller 1865).…”

Section: Discussionmentioning

confidence: 99%

A New Species of Lepeophtheirus (Copepoda; Caligidae) Parasitic on Three Kelpfish Species (Clinidae) from the Southern California Coast

Passarelli

Tang

2017

Bulletin, Southern California Academy of Sciences

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A new copepod species, Lepeophtheirus schaadti n. sp., is established based on female and male specimens obtained from the Giant Kelpfish, Heterostichus rostratus Gi¬ rard, 1854, and Striped Kelpfish, Gibbonsia metzi Hubbs, 1927, captured at Inner Cabrillo Beach in southern California, U.S.A. In addition, comparisons with copepod specimens identified by Wilson (1935) as L. parviventris Wilson, 1905 from the Spotted Kelpfish, Gibbonsia elegans (Cooper, 1864), in Newport Bay, California, revealed they are conspecific with L. schaadti n. sp. The new species differs from its congeners by a combination of characters that include: female with a genital complex that is more than half the length of the cephalothoracic shield and with posterolateral lobes, an abdomen that is composed of one somite and is less than one-quarter the length of the genital complex, a maxillulary dentiform process bearing a thin ridge on the inner tine and lacking a basal knob, no myxal process on the maxilliped, apically rounded tines on the sternal furca, the spine on the first exopodal segment of leg 3 inserted distally on the basal swelling, a 3-segmented leg 4 exopod, and a broad inner lobe of leg 5 that does not extend beyond the posterior margin of the genital complex; and male with three accessory claws on the antennal endopod and no myxal process on the maxilliped. L. schaadti n. sp. represents the first account of an ectoparasitic species from the Striped Kelpfish and Spotted Kelpfish, as well as the fourth ectoparasitic species reported from the Giant Kelpfish.Members of the copepod family Caligidae Burmeister, 1835, commonly known as sea lice, are predominantly external parasites of marine fishes (Dojiri and Ho 2013). Among the 30 valid caligid genera, Lepeophtheirus von Nordmann, 1832 is one of the more speciose genera, with 121 valid species and 2 recognized subspecies (Boxshall and Walter 2016). Lepeophtheirus parasitizes marine teleosts worldwide, but is more diverse in temperate latitudes (Kabata 1979). One species, Lepeophtheirus salmonis (Kroyer, 1837) sensu lato, is the most pathogenic ectoparasite on farmed salmonids in the northern hemisphere (Johnson et al. 2004;Costello 2006). Presently, 17 species of Lepeophtheirus have been reported from 16 fish families along the California coast, from San Francisco Bay in the north to La Jolla in the south of the state (Table 1). Recent samples of Giant Kelpfish ( Heterostichus rostratus Girard, 1854) and Striped Kelpfish ( Gibbonsia metzi Hubbs, 1927) (Clinidae Swainson, 1839) collected within the Port of Los Angeles during Cabrillo Marine Aquarium's Inner Cabrillo Beach Survey (ICBS) were infected with an unidentified species of Lepeophtheirus. The ICBS is a long-term, tri-annual survey designed to monitor the abundance and diversity of the invertebrates and

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Section: Discussionmentioning

confidence: 99%