Interrelationship of linear dimensions as growth corollary of pama croaker Otolithoides pama in the Bay of Bengal

Authors

  • ZOARDER FARUQUE AHMED
  • MST. KANIZ FATEMA
  • UMME HABIBA AZ ZOHORA
  • MANSURA AKTER JOBA
  • FERDOUS AHAMED

DOI:

https://doi.org/10.52168/bjf.2020.32.33

Keywords:

Otolithoides pama, Length-length relationship, Bay of Bengal

Abstract

Growth pattern of pama croaker Otolithoides pama population in the Bay of Bengal was determined
as the corollary of relationships between standard length (SL) and total length (TL), the two most prevalently
used linear dimensions of fin fish species. Monthly pama croaker samples were collected from the industrial
fisheries in the Bay of Bengal. The length-length relationship was constructed algebraically in the form of
y=a+bx. Relationships between SL and TL for male, female and unsexed populations were separately
established. Sex ratio between male and female did not deviate from the parity (?
2
test; p>0.05). The SL and
TL ranges of male were 7.2-22 cm and 9.5-28 cm respectively, and the SL and TL ranges of female were
6.8-20 cm and 8.4-25.7 cm respectively. Intercept and slope varied monthly in all length-length relationships
regardless of gender categories. The generalized SL-TL relationships of male, female and unsexed
populations were TL=1.214SL+0.761(R=0.989), TL=1.212SL-0.770(R=0.990) and TL=1.203SL+0.904
(R=0.987) respectively. The correlation coefficients of both monthly and generalized regression analyses of
all sex types were very high (R?0.852) which explained that the relationships between the two length
dimensions were strongly correlated. The growth corollary appeared both as isometric and allometric for
monthly populations. Allometric growth was apparent in July, August and September in all gender types,
while isometric growth was deduced in other months. This study would be useful for future research in order
to make comparisons with the relevant aspects of O. pama population between years and locations in the Bay
of Bengal.

Downloads

Download data is not yet available.

Downloads

Published

2021-01-15