Katano and Maekawa, 1997



Citation


Katano, O. and Maekawa, K. (1997) Reproductive regulation in the female Japanese minnow, Pseudorasbora parva (Cyprinidae). Env. Biol. Fish., pp. 197-205

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Pseudorasbora parva Spawning conditions Mating system Females usually deposit eggs in several batches in several male territories on a day, and repeat matings several times during the course of a spawning period. When mating, a female moves rapidly along the susbtrate, releasing and attaching to the surface eggs which are inseminated soon after by the territorial males No category
Pseudorasbora parva Spawning conditions Nycthemeral period of oviposition Mating does not occur during the night Night
Pseudorasbora parva Spawning conditions Parental care A territorial male defends eggs until the embryos hatch Male parental care
Pseudorasbora parva Spawning conditions Spawning substrate Around smooth surfaces of rocks, boulders and plants Ambiguous
Pseudorasbora parva Spawning conditions Spawning site preparation Males set up mating territories around smooth surfaces of rocks, boulders and plants No category
Pseudorasbora parva Spawning conditions Spawning temperature Water temperatures ranged from 11.8 to 27°C during experiments, which was similar to the range of water temperature (from 13.6 to 26°C) when minnow spawned in the reservoir 11.8 °C
Pseudorasbora parva Spawning conditions Spawning period duration Spawning occurred from 30 April to 21 August 30.0 weeks
Pseudorasbora parva Spawning conditions Spawning water type Ponds and rivers Stagnant water
Pseudorasbora parva Spawning conditions Spawning depth Shallow parts of ponds and rivers No data
Pseudorasbora parva Male Male sexual dimorphism Males were significantly larger than females Absent
Pseudorasbora parva Egg Egg adhesiveness Attached eggs Non-Adhesive
Pseudorasbora parva Female Relative fecundity 253-1733 [Relationships between the total number of eggs laid by individual females and their body weight. The regression equation was Y=986.3 X - 1718.9, Y = number of eggs, X = body weight in April., with weight ranging mainly from 2.0 to 3.5 g] 993.0 thousand eggs/kg
Pseudorasbora parva Female Age at sexual maturity The fish is sexually dimorphic with males larger than females and reaches maturity at the age of one to two years No data
Pseudorasbora parva Female Absolute fecundity The total number of eggs (fecundity) laid by individual females varied from 0 to 6285, different means ranging from 632 ± 805 to 2053 ± 1442 632.0 thousand eggs
Pseudorasbora parva Spawning conditions Spawning season In Japan, the spawning season lasts from April to August ['April', 'August']
Pseudorasbora parva Female Length at sexual maturity The mean (± SD) total length of fish captured in April and used in the experiment was 6.6 ± 0.3 cm (n=68, range 6.0-7.4) for males 6.6 cm
Pseudorasbora parva Male Length at sexual maturity The mean (± SD) total length of fish captured in April and used in the experiment was 7.9 ± 0.5 cm (n=68, range 7.0-8.9) for males 7.9 cm
Pseudorasbora parva Spawning conditions Spawning release Is a multiple spawner that lay eggs repeatedly duting the spawning season. Mutliple