Akademik Veri Yönetim Sistemi
JOURNAL OF LIMNOLOGY AND FRESHWATER FISHERIES RESEARCH, cilt.9, sa.2, ss.63-75, 2023 (Hakemli Dergi)
This is the first study providing information on some morphometric parameters
for Pontastacus leptodactylus from Sapanca Lake (Sakarya), Türkiye. This study
was conducted from June - 2016 to October - 2017 and a total of 264 crayfish
were caught, being 146 females and 118 males. The results revealed that the
average total length for the population was 91.89±15.68 mm (TL±SD)
(94.75±15.91 mm for females, 88.36±14.72 mm for males), and the average total
weight for the total population was 27.27±16.84 g (TW±SD) (29.02±17.54 g for
females, 25.09±15.74g for males). The sex ratio was computed as 1.24:1 (female
to male). A strong positive statistical relationship was determined between the
total length and total weight of females, males, and both sexes (r2
: 0.90 – 0.95).
This statistically strong relationship was also valid between other body parts, such
as carapace length, width, and weight. The regression analyses for total lengthtotal weight relationships also revealed that the whole population exhibited
positive allometric growth (b=3.186) regardless of sex, and the condition factor
for all sex groups was computed to be over 3 (K=3.230.60 SE).