Trait completeness | 56% |
Total data | 45 |
References | 8 |
Author: Fabrice Téletchéa
License: All rights reserved
Trait id | Trait | Primary data | Secondary Data | References |
---|---|---|---|---|
1 | Oocyte diameter | 1.20-1.36 [Egg before swelling] | 1.28 mm | Mikodina and Makeyeva, 1981 |
2 | Egg size after water-hardening | 5.6 [Eggs swell four to five fold during hydratation] | 5.6 mm | Crosier et al, 2005 |
2 | Egg size after water-hardening | 3.40-4.40 [Egg after swelling, the membrane diameter increases 3-5 times] | 3.9 mm | Mikodina and Makeyeva, 1981 |
2 | Egg size after water-hardening | After the eggs have been fertilized and have absorbed water, the egg membrane expands to about 5-6 mm | 5.5 mm | Naca, 1989 |
3 | Egg Buoyancy | Bathypelagic and carried by currents | Pelagic | Crosier et al, 2005 |
3 | Egg Buoyancy | Eggs developp in pelagic water of the river current [The buoyancy of the egg is achieved by the penetration under the membrane of a considerable amount of water and the creation of perivitelline space] | Pelagic | Mikodina and Makeyeva, 1981 |
3 | Egg Buoyancy | Pelagic | Pelagic | Fishbase, 2006 |
3 | Egg Buoyancy | Develop in pelagic water | Pelagic | Kunz, 2004 |
3 | Egg Buoyancy | The eggs of chinese carps are semibuoyant and are carried by currents until they hatch | Pelagic | Scholfield, 2005 |
3 | Egg Buoyancy | Having a greater specific gravity than water, eggs sink to the bottom in still water; yet, they are semi-buoyant in a current, floating until the fry hatch | Demersal | Naca, 1989 |
4 | Egg adhesiveness | Slight stickiness, manifested only in the first 2-3 minutes in water | Adhesive | Mikodina and Makeyeva, 1981 |
4 | Egg adhesiveness | Characterized by slight stickiness (due to acid mucopolysaccharies on the surface of the envelope) observed only in the first 2-3 minutes | Adhesive | Kunz, 2004 |
4 | Egg adhesiveness | The eggs are seperated and nonadhesive | Non-Adhesive | Naca, 1989 |
6 | Temperature for incubation | The optimum temperature is between 25 and 27°C | 25.0 °C | Naca, 1989 |
Trait id | Trait | Primary Data | Secondary Data | References |
---|---|---|---|---|
14 | Onset of exogeneous feeding | Rearing fry and fingerlings involves nurturing 3-4 day-old postlarvae, which have begun to eat | 3.5 °C * day | Naca, 1989 |
Trait id | Trait | Primary Data | Secondary Data | References |
---|---|---|---|---|
15 | Age at sexual maturity | 6-11 [sex not specified] | 8.5 year | Crosier et al, 2005 |
15 | Age at sexual maturity | 4-5 [Female] | 4.5 year | Fishbase, 2006 |
16 | Length at sexual maturity | 88-95 [Female] | 91.5 cm | Fishbase, 2006 |
17 | Weight at sexual maturity | Average weight of 22.900 kg for fishes in the Changjiang River | 22.9 kg | Naca, 1989 |
18 | Female sexual dimorphism | The pectoral fins are thin and short, spreading out spontaneously like a fan. No pearl organs appear | Absent | Naca, 1989 |
19 | Relative fecundity | Average 93.1 | 93.1 thousand eggs/kg | Naca, 1989 |
20 | Absolute fecundity | 129-1180 | 654.5 thousand eggs | Crosier et al, 2005 |
20 | Absolute fecundity | Average 2,131,000 | 2.0 thousand eggs | Naca, 1989 |
24 | Maximum GSI value | Average 11.00 | 11.0 percent | Naca, 1989 |
Trait id | Trait | Primary Data | Secondary Data | References |
---|---|---|---|---|
27 | Age at sexual maturity | 3 | 3.0 years | Fishbase, 2006 |
28 | Length at sexual maturity | 90 [Male] | 90.0 cm | Fishbase, 2006 |
30 | Male sexual dimorphism | The pectoral fin rays are thick and long, extending freely like sharp knives. In the reproduction season, pearl organs appear on the pectoral fins and opercula of mature male fish. They are coarse to the touch | Absent | Naca, 1989 |
Trait id | Trait | Primary Data | Secondary Data | References |
---|---|---|---|---|
37 | Spawning migration period | Prespawning adults migrate upstream in spring - early summer | ['April', 'May', 'June', 'July', 'August', 'September'] | Fishbase, 2006 |
39 | Spawning season | May to July | ['May', 'June', 'July'] | Fishbase, 2006 |
40 | Spawning period duration | 8-10 [May to July] | 9.0 weeks | Fishbase, 2006 |
41 | Spawning temperature | 26-30 | 28.0 °C | Crosier et al, 2005 |
41 | Spawning temperature | 19.2-29.0 | 24.1 °C | Scholfield, 2005 |
42 | Spawning water type | Flowing water | Flowing or turbulent water | Mikodina and Makeyeva, 1981 |
42 | Spawning water type | Turbulent waters | Flowing or turbulent water | Fishbase, 2006 |
42 | Spawning water type | Spawning grounds are usually located in river reaches characterized by turbulent or whirlpool-like flow, often in the vicinity of islands or stream junctions [Reported current velocities of spawning areas in China ranged from 0.33 to0.90m/s] | Flowing or turbulent water | Scholfield, 2005 |
42 | Spawning water type | Their spawning occurs in a considerable current | Flowing or turbulent water | Belova, 1981 |
44 | Spawning substrate | Pelagophilous | Pelagophils | Mikodina and Makeyeva, 1980 |
44 | Spawning substrate | Bottom | No category | Crosier et al, 2005 |
44 | Spawning substrate | Their eggs are deposited in flowing water and develop in palegic water | Pelagophils | Kunz, 2004 |
44 | Spawning substrate | Belong to the pelagophilous group | Pelagophils | Belova, 1981 |
45 | Spawning site preparation | Open water/substratum egg scatterers | Open water/substratum scatter | Fishbase, 2006 |
48 | Spawning release | One clear seasonal peak per year | Total | Fishbase, 2006 |
48 | Spawning release | In a single batch | Multiple | Crosier et al, 2005 |
49 | Parity | Once maturity has been reached, reproduction is capable of occuring annually | No category | Crosier et al, 2005 |
50 | Parental care | Non guarders | No care | Fishbase, 2006 |