Spontaneous Spawning of Brazilian Sardine in Captivity

Abstract

In one year, 76 first generation (F1) Brazilian sardine Sardinella brasiliensis breeders spawned 84 times spontaneously in captivity. This is the first report for the genus Sardinella. Following the pattern found in the natural environment, the number of spawns, as well as fertilization and hatching rates were higher in spring, summer and fall than in winter. Until now, winter spawning was only presumed to occur in a natural environment. Water temperature, and not photoperiod, was positively correlated with reproductive performance.

Temperature influence on the initial development of Sardinella brasiliensis larvae

“…The species Sardinella aurita has a similar spawning pattern in the wild, occurring in temperature of 26.5°C (Zarrad et al, 2018), and the eggs are found in temperature of 25.5°C (Zarrad et al, 2007). In captivity, the Brazilian sardine spawn in all seasons, but during the winter, when the temperature reaches a low of 19°C, the hatching and fertilization rate is negatively affected (Magnotti et al, 2020).…”

“…The broodstock (F1) was composed of 76 fish (Magnotti et al, 2020), maintained in the laboratory, and the spawning occurred spontaneously during summer, the period of better reproductive performance for this species (Magnotti et al, 2020). The fish were maintained in an 8,000‐L circular tank, with natural photoperiod (27°34′02″S, 48°25′44″W), continuous water flow, salinity of 35 and temperature varied with the environment (27.90 ± 1.68°C), and they were fed three times a day with a commercial diet (0.8–1.0 mm, 45% crude protein, 13% moisture, 9% lipid, 3.6% fibre and 4500 cal kg −1 ) until apparent satisfaction.…”

“…The serial spawning of many pelagic eggs occurs in the ocean between 22 and 28°C and salinity of 35 (Gigliotti et al, 2009; Matsuura, 1983, 1998). In captivity, the spawning occurs between 19 and 25°C, with better results in fecundity and hatching during the summer (21.6–27.6°C) for this species (Cerqueira et al, 2020; Magnotti et al, 2020). The egg hatching takes place 19 h after fecundation at 24°C (Matsuura, 1998).…”

Short communication: Functional assessment of citral dietary supplementation on growth performance, intestinal parameters, and specific activity of the digestive enzymes of Sardinella brasiliensis reared in RAS

“…In recent years, S. brasiliensis has gained prominence in Brazilian marine sh farming, arousing the interest of the tuna shing industry and the canning industry. Several studies have been carried out aiming at the development of technologies for S. brasiliensis farming (Baloi et al, 2016;Baloi et al, 2017a;Cerqueira et al, 2020), nutritional improvements (Sterzelecki et al, 2017(Sterzelecki et al, , 2018(Sterzelecki et al, , 2021a(Sterzelecki et al, , 2021b, sanitary investigations (Owatari et al, 2020), and physiological aspects under different cultivation situations (Baloi et presents advantageous aspects when compared to other marine sh species, mainly accelerated growth even with low feeding rates (Baloi et al, 2016), and spontaneous spawning in captivity (Magnotti et al, 2020).…”

First Successful Transport and Short-term Rearing of the Endangered Sardinella tawilis (Herre, 1927) in Ex Situ Captivity

“…Vagelli (2004);Shei et al (2010)] or enhance fish stocks (le Vay et al 2007). Captivity trials have been conducted on several clupeid species related to S. tawilis (Kuthalingam et al 1983;Olmedo et al 1990;Magnotti et al 2020), but to date, no successful captive rearing trial exists for the Philippine endemic freshwater sardine. If rearing in captivity is achieved, then future works can proceed to captive breeding of S. tawilis, which can be used for restocking on Taal Lake after catastrophic events and in other lakes with similar characteristics such as Tadlak Lake and Lake Lanao (Mamaril 2001).…”