Gross and Nowell, 1980



Citation


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

Associated characteristics


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