Pomoxis annularis

Scientific name

Common name

Family

External links

Trait completeness	26%
Total data	33
References	14

Author: Fabrice Téletchéa
License: All rights reserved

Traits detail

Egg (100.0%)

Trait id	Trait	Primary data	Secondary Data	References
1	Oocyte diameter	0.65	0.65 mm	Neumann and Murphy, 1992
4	Egg adhesiveness	Adhesive	Adhesive	Hansen, 1965
4	Egg adhesiveness	Adhesive	Adhesive	Siefert, 1968
7	Degree-days for incubation	14.4; 3.88	55.87 °C * day	Siefert, 1968
7	Degree-days for incubation	18.3-19.4; 1.8-2.1	36.76 °C * day	Siefert, 1968
7	Degree-days for incubation	22.8; 1.75	39.9 °C * day	Siefert, 1968
3	Egg Buoyancy	Demersal	Demersal	Hansen, 1965
1	Oocyte diameter	0.58-1.02 : "Coalescence of yolkglobules (Mature ova).0.58- 1.02 mm."	0.8 mm	Thomas and Kilambi, 1981
2	Egg size after water-hardening	My measurements of mature egg diameters (0.82 to 0.92, average 0.89 mm )"	0.89 mm	Whiteside, 1964
2	Egg size after water-hardening	To estimate fecundity, the right lobe was weighed (nearest 0.01 g) and then preserved in 5% buffered formalin (Bunnell et al., 2005). Briefly, vitellogenic (i.e. fully yolked, 0.40-1.0 mm diameter) eggs in each of three 4 mm diameter cores were counted.	0.7 mm	Bunnell et al, 2007
3	Egg Buoyancy	ariadnophilic (deposit adhesive eggs within nests)	No category	Stewart et al, 2016
4	Egg adhesiveness	The female often engages in similar nest cleaning behaviors just before spawning and after egg deposition. Substrate at the nest site appears less important to the male than being near some protective cover or bottom vegetation. Nests are located on sod clumps, clay, gravel, rock piles, hollows made among aquatic plants, filamentous algae, or roots as well as the surfaces of boulders; rootwads and submerged brush or trees.	Adhesive	Cooke and Philipp, 2009
4	Egg adhesiveness	ariadnophilic (deposit adhesive eggs within nests)	Adhesive	Stewart et al, 2016
5	Incubation time	Water temperature was maintained at 20°C in a climate-controlled room on a 14L : 10D cycle. One or more adult pairs spawned during their first night in captivity. Adults were kept with the eggs for two days to allow paternal fanning of the embryos. Embryos hatched 2-3 days after fertilization.	50.0 days	Browman and O'Brien, 1992
5	Incubation time	In an indoor hatchery setting at 18-21° C, hatching has been observed approximately 72hrs post-spawning.	19.5 days	Culpepper, 2015
5	Incubation time	Adults of both species spawn for 6–8 weeks during late spring through early summer, exhibiting similar reproductive strategies as males build nests in the littoral zone (0.2- to 0.8-m depth) and then provide nest defence to incubating eggs (2–4 days) and embryos (i.e., yolk-sac larvae, 2-6 days).	4.0 days	Bunnell et al, 2003
5	Incubation time	The incubation times for white crappies were shorter than those for smallmouth bass (1.9 versus 6.0 d for eggs and 4.9 versus 6.0 d for embryos at 18°C).	1.9 days	Clark et al, 2008
6	Temperature for incubation	Water temperature was maintained at 20°C in a climate-controlled room on a 14L : 10D cycle.	20.0 °C	Browman and O'Brien, 1992
6	Temperature for incubation	Spawning begins in March in the southern U.S. when water temperature reaches 13-14° C, with peak spawning occurring at 16-20° C.	13.5 °C	Culpepper, 2015
7	Degree-days for incubation	Egg incubation time (d) = 1.87 + 3.6*10^6 e-T	1.87 °C * day	Clark et al, 2008

Larvae (86.0%)

Trait id	Trait	Primary Data	Secondary Data	References
8	Initial larval size	White crappie are approximately 3-4 mm in lenght at hatching and groxth in the first several days is rapid.	3.5 mm	Browman and O'Brien, 1992
8	Initial larval size	In a compilation by Auer (1982) of 99 freshwater species (including 22 families) native to the Great Lakes basin, mean length at hatch was 6.24 mm; white crappie was the smallest species	6.24 mm	Bunnell et al, 2003
9	Larvae behaviour	Zooplanktivorous juveniles of the white crappie, Pomoxis annularis, are saltatory searchers; they search briefly while stationary and, if they do not locate a prey, swim a short distance before stopping to scan again. In this paper, we report on the development of foraging behavior in white crappie larvae, compare it to the search strategy of juveniles.	Pelagic	Browman and O'Brien, 1992
9	Larvae behaviour	Estimates of visual acuity in a pelagic freshwater zooplanktivorous fish, the white crappie (Pomoxis annularis, Centrarchidae).	Pelagic	Browman et al, 1990
11	Temperature during larval development	the critical thermal maxima of white crappie to be 32.5° C, while the critical thermal maxima of black crappie was 35° C. Optimum performance and growth occurs at 23.5° C for white crappie.	32.5 °C	Culpepper, 2015
11	Temperature during larval development	Rather, osmoregulatory failure may have occurred during exposure to temperatures colder than 4°C for at least 1 week. Thus, the availability of warm (≥4°C), oxygenated water during winter may be critical to the survival of age-0 white crappies. In the northern portion of their range, winter temperatures may account for some of the recruitment variability common to white crappie populations.	4.0 °C	McCollum et al, 2003
12	Sibling intracohort cannibalism	However, most hatchery practices do not attempt to grow-out crappie beyond the post-larval stage due to factors associated with cannibalism.	Cannibalism	Culpepper, 2015
12	Sibling intracohort cannibalism	Potential predators of larvae are numerous, including earlier-hatched larvae, such as cannibalistic Pomoxis spp. larvae, or limnetic walleye and yellow perch, as well as otherlimnetic adults such as white crappie.	Cannibalism	Bunnell et al, 2003
13	Full yolk-sac resorption	Adults of both species spawn for 6–8 weeks during late spring through early summer, exhibiting similar reproductive strategies as males build nests in the littoral zone (0.2- to 0.8-m depth) and then provide nest defence to incubating eggs (2–4 days) and embryos (i.e., yolk-sac larvae, 2-6 days)	112.0 °C * day	Bunnell et al, 2003
13	Full yolk-sac resorption	The incubation times for white crappies were shorter than those for smallmouth bass (1.9 versus 6.0 d for eggs and 4.9 versus 6.0 d for embryos at 18°C).	88.0 °C * day	Clark et al, 2008
13	Full yolk-sac resorption	Water temperatures at spawning ranged from 14 to 23 C. The average time between start of hatching and departure of broods from the nests was 95 hr (range, 51 to 162 hr). Larvae absorbed the yolk sac when 4.5 to 4.6 mm long	1757.0 °C * day	Siefert, 1968
14	Onset of exogeneous feeding	prey items were first observed in the gut on 9 day after hatching.	180.0 °C * day	Browman and O'Brien, 1992
14	Onset of exogeneous feeding	Growth of first-feeding larvae (<10 days old) increased with total zooplankton biomass (r2 = 0.64).	10.0 °C * day	Bunnell et al, 2003