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Cardio‐respiratory morphometrics of spangled perch, Leiopotherapon unicolor (Günther, 1859), (Percoidei, Teraponidae)
Author(s) -
Gehrke P. C.
Publication year - 1987
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1987.tb05266.x
Subject(s) - biology , morphometrics , body weight , perch , respiratory system , fishery , anatomy , zoology , fish <actinopterygii> , endocrinology
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.