7723

• UCREFRP Catalog Number: 7723
• Author: Snyder, D. E. and R. T. Muth
• Title: Editor
• USFW Year: Series
• USFW - Doc Type: 1990
• Copyright Material: NO

Table 5. Comparison of the more diagnostic melanophore pigmentation patterns for larvae and juveniles
(:S40 SL) of Upper Colorado River Basin catostomids. Key to characters and their states is given below.
The letter "r" indicates that the character state or range of states it follows is rare.
Character Catostomus Catostomus Catostomus Catostomus Catostomus Xyrauchen
number ardens commersoni discobo/us /atipinnis p/atyrhynchus texanus
Protolarvae (after pigment is well established)
1. 3-5 1-2 2-5 3-5 1-3 4-5
2. 1/3 1/2(r)/3 1 1 1/2(r)/3 1/2(r)/3
7. 2-3 1-2 1-3 1-3 1-2 1-3
8. 2-3 1-2 2-3 1-2 2-3 1-2
Flexion Mesolarvae
1. 3-5 1-2 2-5 34 1-2 4-5
2. 1/3 1-3 1 1 1-3 1-3
3. 1-2 2 1-2 1-2 2 1-2
4. 1-2 1-2 1-2 1 1-2 1-2
5. 2 2 1-2 2 1-2 2
7. 2-3 1-3 1-2 2-3 1-2 1-3
8. 1-2 1-3 1-3 1-2 2-3 1-2
9. 1 1-2 1 1-2 1 1
10. 2 2 2 2 2 1-2
11. 1-2 1-2 1-3 1-2 1 1
12. 1-2 1-2 1-2 1 1 1
13. 2-3 2-3 1-3 2-3 2-3 1-3
Postflexion Mesolarvae
1. 3(r)/4/5(r) 1/2(r) 2-3/4-5(r) 34 1/2(r) 4-5
2. 1/2(r)/3 1 (r)/2-3 1/3(r) 1/2-3(r) l(r)/2-3 1/2(r)/3
3. 2 2 l(r)/2 1-2 2 l(r)/2
8. 1-3 l(r)/2(r)/3 2-3 1-3 2(r)/3 1 (r)/2-3
9. 1 l(r)/2(r) 1 l(r)/2 l(r) 1
12. 1-2 1-3 1-2/3(r) 1-2 1-3 1-2
13. 2(r)/3 3 2-3 2-3 2-3 2(r)/3
18. 1/2(r) 2 1/2(r) 1-2 l(r)/2 1-2(r)
Metalarvae
1. 3(r)/4/5(r) 1-2 2-3/4-5(r) 3(r)/4/5(r) 1-3 4(r)/5
2. l(r)/3 1-3 1/3(r) 1 1-3 1
3. 1 (r)/2 2 1-2 1-2 1 (r)/2 1/2(r)
6. 1 1 1/2(r) 1 1 1
11. 3 3 3 2(r)/3 3 1 (r)/2-3
12. 2(r)/3 1-2(r)/3 3 l(r)/2-3 1-2(r)/3 1/2
19. 1 1/2(r) 1 1/2(r) 1 l(r)/2
20. 1-2/3(r) 1-2/3(r) 1-2 1/2-3(r) 1/2(r) l(r)/2
21. l(r)/2-3 1-2/3(r) 1-2 1/2 l(r)/2-3 1/2(r)
Juveniles
1. 3(r)/4-5 1-3/4-5(r) 3-5 3(r)/4-5 1-2(r)/3/4(r)/5 4-5
2. 1/3(r) 1/2(r)/3 1 1 1/3(r) 1/3(r)
14. 3 2(r)/3 3 2-3 2-3 1-3
15. 2-3 1-2/3(r) 1-2 1-2 l(r)/2-3 1-2/3(r)
16. 1/2(r) 1/3 1 1 1 1
17. 1/2(r) 1-2 1 1 1/2(r) 1
19. 1-2 1-2 1 l(r)/2 1-2 2
20. 1-2/3(r) 1-2/3(r) 1 (r)/2 1/2-3<r> 1-2 1-2/3(r)
22. 1-2 1/2(r) 1 1-2 1 2
Kev to pilmlent characters and states:
1. Ventral midline from shortly behind heart region to near vent
1. with ~1 melanophores in a continuous or nearly continuous line or narrow band.
2. with ~1 melanophores in a shorter or a distinctly discontinuous line.
3. with 7-20 melanophores.
4. with 1-6 melanophores.
5. without pigment.
2. Pigment over ventral to ventro-Iateral surfaces of gill covers (opercula)
1. absent.
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