An attempt was made to provide some vital aspects of reproductive biology of cobia Rachycentron canadum (Linnaeus, 1766). Samples for a period of two years from an exploratory vessel and from the landing centers of Mumbai were used for the study. The average sex ratio between males and females observed was 1:0.80. Dominance of the number of females above the size of 100 cm was noticed. The size...

Abstract This study aims to determine the effectiveness of adding vitamin C and squid oil commercial feed for broodstock fish ( Anabas testudineus Bloch) on speed gonadal maturation growth. The was conducted three months using a completely randomized design with 4 treatments 3 replications. test were 10 each in treatment hapa, A (Commercial =CF); B (CF + Vit c 2gr/kg; (CF+ ml/kg) D Vitamin 2 g/...

Small pelagic fish are key elements of marine trophic networks and great importance to the total landing species. Over last decades, a decrease in biomass catches European sardine has been described, especially Mediterranean Sea, as an indication drop stock condition. Multiple causes, including direct indirect anthropogenic factors, seem affect this ecologically economically important To addres...

Chub mackerel (Scomber japonicus Houttuyn, 1782) were obtained from the commercial fishermen in Çanakkale, Turkey, July, 2017. We examined a total of 40 fish (20 non-infested and 20 infested) assessed biometric indices, haematological parameters serum biochemical variables. The hepatosomatic index gonadosomatic infested chub lower than those fish. Blood haematocrit ratio haemoglobin concentrati...

abstract in this study were reviewed some biological characteristics including sex ratio, gonadosomatic index, fecundity and egg diameter carassius gibelio in the study area from february to september 2015. during the study, 222 specimens from boostan dam and 238 specimens from alakoli reservoir were sampled using small beach seine. the maximum total length and weight of boostan dam for females...

This study was carried out in order to determine some biological characteristics of the fish species Spicara flexuosa, which is distributed on Eastern Black Sea coast, and contribute management picarel all seas our country. Between October 2015 September 2016, 599 samples were obtained examined laboratory. It determined that individuals between ages I-VII 31.22% population male 68.78% female. T...

The reproduction of Neochelon falcipinnis was studied in the Marine Protected Area (MPA) Niamone-Kalounayes located Casamance estuary (Senegal) from July 2021 to June 2022. results this study are presented after twelve (12) months experimental seine fishing. Reproductive parameters such as length-weight relationship, condition factor (K), sex ratio (SR), gonadosomatic index (GSI) and size at fi...

This study was designed to explore the impact of photoperiod on gonadal development and somatic growth Atlantic salmon raised in recirculating aquaculture systems (RASs), with specific focus role that microRNA (miR)-155 plays as a regulator salmon’s photoperiodic reproduction. These were reared for 5 months under six different regimens, including two changing photoperiods (LL–SL = 24L:0D–8L:16D...

Information on the reproductive biology of toadfish remains limited. In this study, we examined structure and development gonads in grunting Allenbatrachus grunniens (Linnaeus, 1758) using morphological, histological ultrastructural methods. The fish were collected from Pranburi River Estuary, Thailand, during annual period for species (January to December 2018). ovary was paired had elongated ...

The Surinam anchovy (Anchovia surinamensis) is a small fish of commercial and ecological interest in the Amazon basin. To understand reproductive population dynamics this species, 2019 2020, experimental fisheries were carried out during periods flood low water Cujubim Lake Porto Velho (Rondônia, Brazil). This study aimed to analyze seasonal pattern (flood water) for period region, which result...