Abuso, Zenaida V. (University of the Philippines Visayas, 1988-03)
ABSTRACT
A total of 146 tuna larvae representing a 0.004% share in the total
fish larvae catch was collected from Ragay Gulf, Burias Pass, Ticao Pass
and waters north of Samar Sea during the sampling period from November
1981 to December 1982.
Seven species of tunas were identified and described to species
level.
Euthynnus affinis. and Thunnus obesus. comprised a highest relative
abundance of 24.05% in the larval tuna collection. Auxis thazard.and A.
rochei were secondly abundant with 16.0% and 14.0% share, respectively.
Thunnus albacares, Thunnus alalunga and Katsuwonus pelamis were
relatively rare with only 5, 4 and 2,0% share, respectively.
The highest abundance of the larvae were observed mainly irr Ragay
Gulf in May where warmer temperatures ranging from 26.56°C to 28.9T°C
and salinity values from 33.97°/oo to 34.42°/oo prevailed.
