Clearance of a dermal Huffmanela sp. in a sandbar shark (Carcharhinus plumbeus) using levamisole

Robert A. MacLean, Michael H. Fatzinger, Kevin D Woolard, Craig A. Harms

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A wild-caught captive sandbar shark Carcharhinus plumbeus developed a contiguous network of darkly pigmented linear tracks that progressed from the snout to the ventral cervical region. Microscopic examination of a skin scraping revealed nematode eggs of the genus Huffmanela, a group of histozoic nematodes that is known to parasitize requiem sharks and marine and freshwater teleosts. The fresh eggs were darkly pigmented with bipolar plugs, contained a larva, and measured 73.3 to 86.4 by 39.0 to 47.4 μm (n = 10). Formalin-fixed and paraffin-embedded eggs were significantly smaller (Wilcoxon rank sums test, p < 0.005), measuring 70.5 to 78.9 by 33.6 to 41.3 μm (n = 13). These measurements do not correlate with previously reported species of Huffmanela. Serial treatment with levamisole (10 mg kg-1, intramuscular [i.m.]) cleared the egg tracks within 21 d, with no recurrence or apparent complications.

Original languageEnglish (US)
Pages (from-to)83-88
Number of pages6
JournalDiseases of Aquatic Organisms
Volume73
Issue number1
StatePublished - Nov 21 2006
Externally publishedYes

Fingerprint

sandbar
Carcharhinus
levamisole
shark
sharks
Carcharhinidae
Nematoda
egg
formalin
skin (animal)
alkanes
nematode
larvae
teleost
skin
testing
larva

Keywords

  • Carcharhinus plumbeus
  • Elasmobranchii
  • Huffmanela
  • Levamisole
  • Parasitic nematode

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology

Cite this

Clearance of a dermal Huffmanela sp. in a sandbar shark (Carcharhinus plumbeus) using levamisole. / MacLean, Robert A.; Fatzinger, Michael H.; Woolard, Kevin D; Harms, Craig A.

In: Diseases of Aquatic Organisms, Vol. 73, No. 1, 21.11.2006, p. 83-88.

Research output: Contribution to journalArticle

MacLean, Robert A. ; Fatzinger, Michael H. ; Woolard, Kevin D ; Harms, Craig A. / Clearance of a dermal Huffmanela sp. in a sandbar shark (Carcharhinus plumbeus) using levamisole. In: Diseases of Aquatic Organisms. 2006 ; Vol. 73, No. 1. pp. 83-88.
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