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LERNAIDAE WILSON, 1917, Anchor worms (family)
Abdomen not clearly separated from the
anterior part of the body.

 

LERNAEA, LINNAEUS, 1758

133 a. All nupliar stages are not feeding, and
planktonic. Copepodit stages are parasites
on fishgills. The unmetamorphosed adults
are planktonic. Metamorphosed adults
parasitic, e.g. in the skin tissue of
milkfish (Chanos chanos, FORSKÅL),
tilapia and common carp as in Laguna de Bay
fishcultures. (Figures 133a1, 133a2, 133a3)
- Laguna de Bay (copepodite).
  Lernaea sp.
            [1974, 1980, 1984]


 

Lernaea sp. from Laguna de Bay

 

POECILOSTOMATOIDA (DOJIRI & CRESSEY, 1987) (order)
       [POECILOSTOMATOIDA THORELL, 1859]

Eyes absent. Second antennae uniramous, exopod
vestigial or absent. Carapace absent. Thorax
and abdomen differentiated, 4-6 pairs of legs.
Larval development metamorphic.
Harpacticoid copepods generally have an exopod
on the antennae. (Lowry, 1999)

Harpacticoid copepod

 

ERGASILIDAE, THORELL, 1859 (family)
Second antenna large, with a large claw
for gras­ping. First antenna short with 6 segments.
Parasitic, in sea- and freshhwater.

 

ERGASILUS, NORDMANN, 1832

134 a. Body violin-shaped. Antennae 4-segmented,
claw­shaped, as long as the body. Female
with violet-blue streaks. Only the adult
female is parasitic, the immature females
and all stages of males being freeliving.
Velasquez (1951) reported the species to
be parasitic on the gils of the flathead
goby Glosso­gobius giurus, BUCHANAN-HAMILTON,
locally known as biyang puti, from Laguna
de Bay. Average parasitic burden was found
to be 14.67 parasites per fish. Endemic.
- Laguna de Bay, La Mesa Dam
   Ergasilus philippinensis VELASQUEZ, 1951
             [1951, 1978a+b, 1986a]

Seawater species: Ergasilus rotundicorpus Jones, JB & PM Hine 1983.
From Orange-spotted spinefoot Siganus guttatus (Bloch)

 

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VERTEBRATA, CUVIER, 1812, vertebrates (subphylum)

OSTEICHTHYES, HUXLEY, 1880, Bony fishes (class)

Fish larvae from Laguna de Bay (2 pictures)

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