Predictions & Data for this entry

Model: abj climate: MC migrate: phylum:
COMPLETE = 2.5 ecozone: MANE food: bjPz, jiCih class:
MRE = 0.119 habitat: 0jMp, jiMb gender: Hh order:
SMSE = 0.082 embryo: Mp reprod: O family:

Zero-variate data

Data Observed Predicted (RE) Unit Description Reference
ab 20 20.01 (0.0006447) d age at birth Rive1978
tj 80 70 (0.125) d time since birth at puberty Foli1993
tp 90 93.75 (0.04172) d time since birth at puberty guess
am 125 124.9 (0.000743) d life span Foli1993
Lj 0.5 0.6084 (0.2169) cm total length at metam Foli1993
Lp 1 1.031 (0.03099) cm total length at puberty Foli1993
Li 2.3 2.379 (0.03442) cm ultimate total length Foli1993
Wwb 2.145e-06 2.135e-06 (0.004636) g wet weight at birth Rive1978
Wwi 0.14 0.1421 (0.01503) g ultimate wet weight guess
Ri 256 254.6 (0.005603) #/d maximum reprod rate Chri1977

Uni- and bivariate data

Data Figure Independent variable Dependent variable (RE) Reference
LJX total length feeding rate (0.7041) Foli1993
Tab time since birth time till metam (0.09105) Rive1978
tL time since birth total length (0.3278) Foli1993

Pseudo-data at Tref = 20°C

Data Generalised animal Cuthona nana Unit Description
v 0.02 0.002531 cm/d energy conductance
kap 0.8 0.7196 - allocation fraction to soma
kap_R 0.95 0.475 - reproduction efficiency
p_M 18 1716 J/d.cm^3 vol-spec som maint
k_J 0.002 0.002 1/d maturity maint rate coefficient
kap_G 0.8 0.8003 - growth efficiency

Facts

  • Feeds on hydroid Hydractinia echinata (0.018 mg/ polyp) large individuals eat polyps, small ones mat material (stolons) (Ref: Wiki)
  • max length at Gerrish Island 1.2 cm, Gosport Harbor 2.3 cm (Ref: Wiki)
  • survives 16 C with 2 water refreshments/d (Ref: Rive1978)
  • up to 16 egg masses in lab of 300-600 eggs, first and last smaller. Veliger larva do not swim freely and metaphose wihtin 1 or 2 d (Ref: Rive1978)
  • Adult specimens of C. nana kept without food in Millipore-filtered sea water continued to lay egg masses for up to ten days. The size and activity of the adults progressively diminished during that time, but some starved individuals survived for 17 days. They laid several egg masses in the first few days of isolation, but the frequency of oviposition and the number of eggs per spawn decreased with time. Mean egg diameter did not vary, and the rate and events of larval development and metamorphosis proceeded normally in the presence or absence of H. echinata. (Ref: Rive1978)
  • hermaphrodite (Ref: Wiki)

Bibliography

Citation