Cryptic crossword No 4,109

Across

1. Perform following a commotion (3)
2. No turn in broken pivot for a bridge (8)
3. Sounded no good after sport (4)
4. Chamberlain, for example with the Italian tenor (4)
5. Dad holds European vegetable (3)
6. Guard against drone circling battle (6)
7. Artist returning rubbish and acquiring copyright (8)
8. Fruit salad of cut pepper snail (10)
9. Feared the bizarre, like Quetzalcoatl for instance (9)
10. Ask me? (5,3)
11. Management of waste can create hard work (5)
12. Change of watch at end of bank strike (6)
13. Key personnel department fills temporary job for the iron horse (6)
14. Still around, like source of ferment (5)
15. Bird devoured after sick thrill (9)
16. Support left important details (6)
17. Bawdy winos developing beer bellies (3,7)
18. Rock band includes a wind (5,3)

Down

1. Scarlet woman behind fashionable estate (11)
2. Army totaled Italian city (7)
3. Replacement accommodates expert (3)
4. Idiot son clutches hot towels (6)
5. Peanuts character — one from the Grateful Dead? (6)
6. Farewell in Panama's tearful (7)
7. Famous citizen in key source of red dye (7)
8. Center up and down (3)
9. Strait yacht (8,7)
10. Canals went dry briefly and Ali was frantic (6,9)
11. Outcome of queens once caught in disarray (11)
12. Latino wild about hot lowlands region (7)