Record Details

The annual reproductive cycle and sex inversion of the Picnic seabream, Acanthopagrus berda (Forsskål 1775) from Indian waters: Histological and morphometric description

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title The annual reproductive cycle and sex inversion of the Picnic
seabream, Acanthopagrus berda (Forsskål 1775) from Indian
waters: Histological and morphometric description
Not Available
 
Creator Shilta,M T
Suresh Babu,P P
Chadha,N K
Asokan,P K
Vinod,K
Imelda,Joseph
Sawant,Paramita Banerjee
Abhijith,Ramya
 
Subject Acanthopagrus berda, gonad, histology, India, mariculture, reproductive cycle
 
Description Not Available
The annual reproductive cycle of picnic seabream, Acanthopagrus berda (Forsskål,
1775), one of the potential aquaculture candidate from estuarine waters of Calicut,
Kerala (India) was studied. Based on the morphological and histological studies, the
ovotestes of A. berda were classified as active male, active female, inactive male,
inactive female, transitional and undifferentiated. Histological observation of transitional
gonads showed signs of degeneration in the testicular lobe, proliferation of
connective tissue and empty sperm ducts indicating protandrous hermaphroditism
in A. berda. Ovary was classified into seven maturity stages (virgin, developing
virgin, developing, maturing, mature, running, spent) and testis into five maturity
stages (resting, maturing, mature, running, spent). Gonadal development in A. berda
indicated resting phase (February–July), pre‐spawning phase (March–August) and
spawning phase (August–December). Inactive (24.6%) and active males (21.6%) were
observed as dominant in smaller length classes (140–250 mm TL), whereas inactive
(18%) and active females (51%) were observed as dominant in larger length classes
(251–450 mm TL). Few primary females (28.1%) were observed in smaller (below
250 mm TL) and few primary males (28.5%) were observed in larger length classes
(above 250 mm TL). From the present study, it can be concluded that in A. berda,
most of the individuals function first as males and then change sex to female, but few
continue to function as either male or female throughout their lifespan indicating
digynous protandrous hermaphroditism.
Not Available
 
Date 2021-09-18T04:35:30Z
2021-09-18T04:35:30Z
2019
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/64345
 
Language English
 
Relation Not Available
 
Publisher Not Available