How to recognise and counter Streptococcus outbreaks in aquaculture 
By Natan Wajsbrot IL Source: thefishsite 2/19/2024
Natan Wajsbrot
Credit: Phibro
Streptococcus agalactiae and S. iniae are two of the most devastating bacteria to impact the warm freshwater fish farming sector around the world – causing diseases that can lead to 80 percent mortalities. Here we describe the bacteria, their impacts and how to ensure that their presence and impacts are minimised.
 



Streptococcus iniae and S. agalactiae are Gram-positive bacterial pathogens of cultured and wild fish. They are spherical or ovoid in shape and 0.5-2.0 μm in diameter. They occur in pairs or chains when grown in liquid media, are non-motile and non-spore-forming.

They are facultatively anaerobic, requiring nutritionally rich media for growth, and commonly attack red blood cell to produce greenish discolouration (α-haemolysis) or complete clearing (β-haemolysis) on blood agar. Both bacteria may present zoonotic concerns.

 
Tilapia Continue...

News Id SourceStampcountry
2676Cod stock off southern N.L. coast at critical levels, says Fisheries Departmentctv news2020-11-20CA
2677Fisheries report brings hope to Indigenous communities, sparks anger in industryctv news2022-07-19CA
26784 Alberta men lose 80 pounds of halibut and crab, fined $4,500 after violations: B.C. conservation officersctv2022-07-22CA
2679Fisheries Department needs to think like a fishpenticton herald2022-07-23CA
2680Underwater robot connects humans' sight and touch to deep seatechxplore2022-07-21US
2681Get paid for catching snakeheads: Maryland tagging program pays up to $200 per fishFOX 5 DC2022-07-06US
2682Fish-farming practices come under scrutiny amid surge in aquaculturemongabay2022-07-06ID
2683Thousands of dead fish washing up along shores of Chesapeake Bay after fishing company reports torn netwtkr2022-07-02US
2684Florida woman kills fish by pouring hot sauce in tank during a fight, deputies sayFOX 35 News2022-07-07US
2685Fisherman caught with fish bombing paraphernalia in Sempornathestar2022-07-08US
2686Engineers try to electro shock invasive carpabc17news2022-07-08US
2687Study: Half of Great Lakes residents unaware of safe fish consumption limitswoodtv2022-07-05US
2688В жару за карпомОхотники.ру2022-07-23RU
2689Meet Australia’s oldest freshwater fish, which can breathe air like a land dwellersmh2022-07-07AU
2690Texas angler becomes first female high school fishing national championwashingtonpost2022-07-06US
2691Ringleader, 35, of illegal poaching operation who stole £60,000 worth of salmon and trout over seven years avoids jailMailonline2022-07-09UK
2692Climate Change May Be Causing Skin Tumors On Antarctic Fishnewsweek2022-07-04US
2693Changes in Gulf of Maine may endanger lucrative fish stocks, experts sayupi2022-07-08US
2694Кто живет в тихой речкеОхотники.ру2022-07-21RU
2695Герасим и два Му-муОхотники.ру2022-07-22RU
2696Капитана из Новосибирской области будут судить на Камчатке за незаконный вылов 50 тыс. тонн рыбыРыболовство.2022-07-21RU
2697Reduced to a Trickle, River Managers Brace for More DryingAssociated Press2022-07-21US
2698Virginia man catches 66-pound blue catfish, breaks state recordFox News2022-07-20US
2699rare 400-pound spotted eagle ray jumps into boat, gives birthFox News2022-07-19US
2700Marine life activists sound off ahead of shark fishing tournamentwptv2022-07-08US

215 216 217 107 of [218 - pages.]