if alewives do produce thiaminase and its effects other fish with reproduction. How can the reproduce Sounds like maybe they will stock Lamprey eels next???
Very good question about other species and reproduction. I wasn't able to find an answer with a google search. However I did find that fish that varied their diet and didn't feed exclusively on fish that contain thiaminase would be fine. Apparently at least some salmonids feed exclusively on alewives so have this issue? Perhaps when the alewive population is down and they are forced to feed on, say, smelt reproduction is more successful? Scratch that. Smelt have Thiaminase too. I wonder if Gobies do?
BTW here is a list of fish species that contain Thiaminase and a list that don't.
Those that do:
Atlantic menhaden (Brevoortia tyrannus)
Atlantic herring (Clupea harengus)
Baltic herring (Clupea harengus membras)
Broad-striped anchovy (Anchoa hepsetus)
Brown bullhead (Amelurus nebulosus)
Californian anchovy (Engraulis mordax)
Capelin (Mallotus villosus)
Channel catfish (Ictalurus punctatus)
Common carp (Cyprinus carpio)
Chub mackerel / Pacific mackerel (Scomber japonicus)
Clams (family Veneridae)
Gulf menhaden (Brevoortia patronus)
Lake whitefish (Coregonus clupeaformis)
Lobster (Homarus americanus)
Mediterranean mussel (Mytilus galloprovincialis)
Rainbow smelt (Osmerus mordax)
Round whitefish (Prosopium cylindraceum)
Ruby snapper (Etelis carbunculus)
Scaled sardine (Harengula jaguana)
Scallops (Placopecten grandis)
Skipjack tuna (Katsuwonus pelamis)
White bass (Morone chrysops)
Yellowfin tuna (Neothunnus macropterus)
Here is a list of some species that don’t contain thiaminase:
Atlantic cod (Gadus morhua)
Atlantic hake / silver hake (Merluccius bilinearis)
Atlantic halibut (Hippoglossus hippoglossus)
Atlantic mackerel (Scomber scombrus)
Atlantic salmon (Salmo salar)
Black crappie (Pomoxis nigromaculatus)
Black sea bass (Centropristis striata)
Bluegill (Lepomis macrochirus)
Brown trout (Salmo trutta)
Cisco/lake herring (Coregonus artedi)
Coho salmon (Oncorhynchus kisutch)
Haddock (Melanogrammus aeglefinus)
Hake (Urophycis spp)
Hardhead catfish (Ariopsis felis)
Lake trout (Salvelinus namaycush)
Largemouth bass (Micropterus salmoides)
Lemon sole (Microstomus kitt)
Mullet (Mugilidae spp)
Northern pike (Esox lucius)
Pollock/Pollack (Pollachius pollachius, Pollachius virens)
Pond smelt (Hypomesus olidus)
Rainbow trout (Oncorhynchus mykiss)
Redfish / red perch / rose fish (Sebastes norvegicus)
Rock bass (Ambloplites rupestris)
Silver seatrout (Cynoscion nothus)
Smallmouth bass (Micropterus dolomieu)
Southern kingfish / king whiting (Menticirrhus americanus)
Tilapia (Oreochromis spp)
Winter flounder (Pseudopleuronectes americanus)
Yellowtail flounder (Limanda ferruginea)
Yellow perch (Perca flavescens)
Yellow pike / walleye (Sander vitreus)