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Differential responses of selectively bred mussels (Perna canaliculus) to heat stress —survival, immunology, gene expression and microbiome diversity
This study aimed to identify general biomarkers of heat stress in P. canaliculus and to assess whether responses differed between genetically distinct selectively bred mussels. We exposed three families of selectively bred mussels (families A, B and C) to three seawater temperature regimes in the laboratory: 1) a “control” treatment (ambient 12°C), 2) a 26°C heat challenge with a subsequent recovery period, and 3) a sustained 26°C heat challenge with no recovery. We investigated whether the survival, immune response (hemocyte concentration and viability, oxidative stress and total antioxidant capacity), hemocyte gen...
Source: Frontiers in Physiology - February 15, 2024 Category: Physiology Source Type: research

Efficacy of commercial peroxyacetic acid on Vibrio parahaemolyticus planktonic cells and biofilms on stainless steel and Greenshell ™ mussel (Perna canaliculus) surfaces
Int J Food Microbiol. 2023 Aug 29;405:110372. doi: 10.1016/j.ijfoodmicro.2023.110372. Online ahead of print.ABSTRACTThe potential of using commercial peroxyacetic acid (PAA) for Vibrio parahaemolyticus sanitization was evaluated. Commercial PAA of 0.005 % (v/v, PAA: 2.24 mg/L, hydrogen peroxide: 11.79 mg/L) resulted in a planktonic cell reduction of >7.00 log10 CFU/mL when initial V. parahaemolyticus cells averaged 7.64 log10 CFU/mL. For cells on stainless steel coupons, treatment of 0.02 % PAA (v/v, PAA: 8.96 mg/L, hydrogen peroxide: 47.16 mg/L) achieved >5.00 log10 CFU/cm2 reductions in biofilm cells for eight stra...
Source: International Journal of Food Microbiology - September 6, 2023 Category: Food Science Authors: Dan Wang Jon S Palmer Graham C Fletcher Stephen L W On Dragana Gagic Steve H Flint Source Type: research

Indigenous food sources as vectors of Escherichia coli and antibiotic resistance
Environ Pollut. 2023 Jul 11:122155. doi: 10.1016/j.envpol.2023.122155. Online ahead of print.ABSTRACTThe contamination of surface waters by fecal bacteria, measured by the number of Escherichia coli, is a significant public health issue. When these bacteria are also resistant to antimicrobials, infections are more complicated to treat. While water is regularly tested at recreational sites, wild-harvested foods, known as mahinga kai by the indigenous Māori people of Aotearoa New Zealand, are commonly overlooked as a source of exposure to potential pathogens and antimicrobial resistance (AMR). We investigate two likely sour...
Source: Environmental Pollution - July 13, 2023 Category: Environmental Health Authors: Sophie van Hamelsve Ld Brigitta Kurenbach Deborah J Paull William A Godsoe Gayle C Ferguson Jack A Heinemann Source Type: research

Identification of New Potential Allergens from Green-lipped Mussel (Perna Canaliculus)
Iran J Allergy Asthma Immunol. 2022 Dec 24;21(6):711-715. doi: 10.18502/ijaai.v21i6.11532.ABSTRACTThe green-lipped mussel (Perna canaliculus) originates from New Zealand. To preserve the health benefits of green-lipped mussel meat, it is freeze-dried to make a long-lasting powder. The powder is used to treat arthritis because of its potential anti-inflammatory properties. The report describes a 54-year-old woman who developed immediate rhinoconjunctival and respiratory symptoms after inhaling green-lipped mussel powder she gave to her dog for arthritis. A skin prick test with green-lipped mussel powder was performed. Prote...
Source: Iranian Journal of Allergy, Asthma and Immunology - January 14, 2023 Category: Allergy & Immunology Authors: Paula Kage Kristin Schubert Regina Treudler Jan-Christoph Simon Martin Von Bergen Janina Tomm Source Type: research