Gross, M.R. and Nowell, W.A. (1980) The Reproductive Biology of Rock Bass, Ambloplites rupestris (Centrarchidae), in Lake Opinicon, Ontario. Copeia,, pp. 482-494
Species | Development state | Trait | Primary Data | Secondary Data |
Ambloplites rupestris | Egg | Egg Buoyancy | Demersal [sink in to the nest] | Demersal |
Ambloplites rupestris | Egg | Egg adhesiveness | The eggs adhere to the nest substrate | Adhesive |
Ambloplites rupestris | Egg | Incubation time | 5 days in natural conditions | 5.0 days |
Ambloplites rupestris | Egg | Temperature for incubation | 16-22 [Natural conditions] | 19.0 °C |
Ambloplites rupestris | Larvae | Larvae behaviour | Nine days before leaving the nest | Demersal |
Ambloplites rupestris | Male | Male sexual dimorphism | During spawning the male's body darkens, resulting in a pitch-black male contrasting sharply beside the unchanged female | Absent |
Ambloplites rupestris | Spawning conditions | Spawning migration distance | Move inshore within the same lake | No data |
Ambloplites rupestris | Spawning conditions | Spawning season | May-June | ['May', 'June'] |
Ambloplites rupestris | Spawning conditions | Spawning period duration | 4-5 [The nesting period lasted 42 days (20 May-30 June) but most reproductive activity occurred within a 19 day period (21 May-8 June)] | 4.5 weeks |
Ambloplites rupestris | Spawning conditions | Spawning temperature | Breeding starts when water temperature reach 20-23 | 21.5 °C |
Ambloplites rupestris | Spawning conditions | Spawning water type | Lake, near the shorline | Stagnant water |
Ambloplites rupestris | Spawning conditions | Spawning depth | Shallow waters: mean water depth of nests was 77.4 cm. While nests ranged from 45 to 138 cm depth, the majority of males (64%) nested between 50 and 69 cm | 77.4 m |
Ambloplites rupestris | Spawning conditions | Spawning substrate | Coarse sand to gravel, nest susbtrate averaging 1.7 cm [No nests were found in muddy, organic substrates] | Lithophils |
Ambloplites rupestris | Spawning conditions | Spawning site preparation | Male constructs a nest [Male extablish territories which each male constructs its nest. Nesting territories are aggressively defended from other fish] | No category |
Ambloplites rupestris | Spawning conditions | Nycthemeral period of oviposition | Spawning occurred more often in early morning (0700-1100: n=10) than either mid-day (1100-1330: n=3) or late evening (2010-2045: n=2) suggesting a temporal preference | Day |
Ambloplites rupestris | Spawning conditions | Mating system | By pair, apparent promiscuity [A female may spawn in different nests (3 males maximum). Males may also spawn with more than one female and four males were observed serially spawning with alternating female] | Promiscuity |
Ambloplites rupestris | Spawning conditions | Spawning release | Multiple spawner | Multiple |
Ambloplites rupestris | Spawning conditions | Spawning release | About 120 dips per spawning and about 3-5 eggs per dip | No category |
Ambloplites rupestris | Spawning conditions | Parental care | Male provides care for the eggs and larvae interm of egg fanning and predator defence: on average 14 days | Male parental care |
Lepomis gibbosus | Spawning conditions | Parental care | Male defends the nest for 6-7 days | Male parental care |