Gamacallum

Gamacallum is a genus which belongs to the family Microcotylidae and class Monogenea. As all Monogenea, species of Gamacallum are ectoparasites that affect their host by attaching themselves as larvae on the gills of the fish and grow into adult stage. This larval stage is called oncomiracidium, and is characterized as free swimming and ciliated.[1]

Gamacallum
Scientific classification
Kingdom:
Animalia
Phylum:
Platyhelminthes
Class:
Monogenea
Subclass:
Polyopisthocotylea
Family:
Microcotylidae
Subfamily:
Microcotylinae
Genus:
Gamacallum

Unnithan, 1971

Members of the genus Gamacallum are characterised by a short wide haptor with up to 25 pairs of clamps, an unarmed genital atrium and a penis occasionally armed with four spines, and a single unarmed vaginal pore.[1]

Species

According to the World Register of Marine Species,[2] this genus includes one specie:

  • Gamacallum macroura (MacCallum & MacCallum, 1913) Unnithan, 1971[3][1] previously included in Microcotyle as Microcotyle macroura MacCallum & MacCallum, 1913[3]
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References
  1. Unnithan, R. V. (1971). On the functional morphology of a new fauna of Monogenoidea on fishes from Trivandrum and environs. Part IV. Microcotylidae sensu stricto and its repartition into subsidiary taxa. American Midland Naturalist, 366-398.
  2. WoRMS (2019). Gamacallum Unnithan, 1971. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=518923 on 2019-11-27
  3. MacCallum, G.A. (1913) Further notes on the genus Microcotyle. Zool Jahrb Jena, 35, 389-402.
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