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Table 2 Numbers of odorant/pheromone receptors, taste receptors, and trace amine receptors identified in the four fishes.

From: Evolution and origin of vomeronasal-type odorant receptor gene repertoire in fishes

   

Species

 

GPCR gene family

Typea

Family size variation (ratio)

Zebrafish

Medaka

Fugu

Pufferfish

Sources

Odorant/pheromone receptors

V2R

3.8

46

22

30

12

This study

 

V1R

1

1

1

1

1

[12]

 

OR

2.4

102

-

44

42

[13, 14]

Taste receptors

T1R

1.3

4

5

4

5

[31, 32]

 

T2R

1.5

4

-

4

6

[31]

Trace amine-associated receptor

TAAR

7.1

57

-

8

-

[33]

  1. Only putatively functional genes are considered. The numbers of ORs, T2Rs, and TAARs in medaka, and TAARs in pufferfish have been unknown.
  2. a V2R, vomeronasal receptor family 2; V1R, vomeronasal receptor family 1; OR, main odorant receptor; T1R, taste 1 receptor; T2R, taste 2 receptor; TAAR. trace amine-associated receptor.
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BMC Ecology and Evolution

ISSN: 2730-7182

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