20 
Big Creek worms were found in darters collected in 
every month except June, July, and August. A. 
jacksoni has previously not been known to parasitize 
Etheostoma (Hoffman 1967:283). 
The only ectoparasites found were two piscicolid 
leeches attached to the caudal fins of two young 
E. squamiceps collected in Big Creek in October. 
Hybridization 
No accounts of hybridization involving E. squami- 
ceps were listed by Schwartz (1972). One E. squami- 
ceps x E. kennicotti hybrid male was collected in 
Big Creek on 1 October 1971. The specimen measured 
40 mm, was 1+ years old, and shared morphological 
characteristics with both parent species (Table 10). 
SUMMARY 
The life-history information on E. squamiceps col- 
lected in Big and Ferguson creeks between 6 October 
1970 and 19 June 1973 is summarized in Table 11. 
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