Portal de Periódicos da CAPES

Cardio‐respiratory morphometrics of spangled perch, Leiopotherapon unicolor (Günther, 1859), (Percoidei, Teraponidae)

1987; Wiley; Volume: 31; Issue: 5 Linguagem: Inglês

10.1111/j.1095-8649.1987.tb05266.x

1095-8649

Peter C. Gehrke,

Water Quality Monitoring Technologies

The heart of Leiopotherapon unicolor comprises 0.135±0.005% of total body weight compared to the average teleost heart size of 0.081±0.002% body weight. The respiratory surface area of 569 mm 2 g −1 is also much larger than that found in most freshwater fish. The exponent b in the equation Gill Area = a. body wt b was evaluated at 1.04, whereas the theoretical value for b is only 0.75. It is therefore evident that L. unicolor has an excessively large gill area and a large heart, which facilitate oxygen uptake in hypoxic environments.