Joanna Pawlak

ORCID: 0000-0002-4684-9670
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About
Contact & Profiles
Research Areas
  • Parasite Biology and Host Interactions
  • Parasites and Host Interactions
  • Marine Ecology and Invasive Species
  • Venomous Animal Envenomation and Studies
  • Marine and fisheries research
  • Helminth infection and control
  • Fish Biology and Ecology Studies
  • Insect and Pesticide Research
  • Marine Bivalve and Aquaculture Studies
  • Ion channel regulation and function
  • Identification and Quantification in Food
  • Parasitic infections in humans and animals
  • Cellular transport and secretion
  • Circadian rhythm and melatonin
  • Nicotinic Acetylcholine Receptors Study
  • Leech Biology and Applications
  • Microplastics and Plastic Pollution
  • Marine Toxins and Detection Methods
  • Dietary Effects on Health
  • Meat and Animal Product Quality
  • Yersinia bacterium, plague, ectoparasites research
  • Marine Biology and Ecology Research
  • Recycling and Waste Management Techniques
  • Aquatic Invertebrate Ecology and Behavior
  • Aquaculture disease management and microbiota

National Marine Fisheries Research Institute
2017-2024

National University of Singapore
2006-2008

University of Warsaw
2005

Boiga dendrophila (mangrove catsnake) is a colubrid snake that lives in Southeast Asian lowland rainforests and mangrove swamps preys primarily on birds. We have isolated, purified, sequenced novel toxin from its venom, which we named denmotoxin. It monomeric polypeptide of 77 amino acid residues with five disulfide bridges. In organ bath experiments, it displayed potent postsynaptic neuromuscular activity irreversibly inhibited indirectly stimulated twitches chick biventer cervicis...

10.1074/jbc.m605850200 article EN cc-by Journal of Biological Chemistry 2006-07-25

A novel heterodimeric three-finger neurotoxin, irditoxin, was isolated from venom of the brown treesnake Boiga irregularis (Colubridae). Irditoxin subunit amino acid sequences were determined by Edman degradation and cDNA sequencing. The crystal structure revealed two subunits with a protein fold, typical for "nonconventional" toxins such as denmotoxin, bucandin, candoxin. This is first colubrid toxin dimer, covalently connected via an interchain disulfide bond. showed taxon-specific...

10.1096/fj.08-113555 article EN The FASEB Journal 2008-10-24

Quantifying the impact of lower trophic level species abundance on higher predators (and vice versa) is critical for understanding marine ecosystem dynamics and implementing ecosystem-based management. Trophic models generally predict a tight coupling between prey fish predators, such that results in predators. This assumes predator feeding rates to some degree are limited by availability. Despite being key component predator-prey interactions multi-species fisheries management, relatively...

10.1101/2025.03.27.645454 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2025-04-01

The consumption of raw or inadequately cooked marine fish can lead to several disorders caused by the ingestion viable anisakid nematodes. Although larvae be killed subzero temperatures, making freezing an important control measure for this potential health hazard, these parasites survive under some conditions. Therefore, aim present study was experimentally evaluate time-temperature conditions needed kill Anisakis simplex and Pseudoterranova spp. effectiveness tested on two species fish:...

10.1007/s00436-019-06339-1 article EN cc-by Parasitology Research 2019-05-16

Knowledge about ecological interactions between species is of paramount importance in ecology and ecosystem-based fisheries management. To understand interactions, studies feeding habits are required. In the Baltic Sea, there good knowledge diet cod, but little known flounder, second most abundant demersal fish region. this study, we investigated diets cod flounder for first time using stomach content data collected simultaneously 2015-2017 over a large offshore area southern Sea. The was...

10.3354/meps13360 article EN Marine Ecology Progress Series 2020-05-18

10.1016/j.toxicon.2006.05.013 article EN Toxicon 2006-06-15

Atlantic cod (Gadus morhua) is an important commercial fish species on the world market. The aim of our studies was to explore presence, intensity infection and distribution zoonotic nematodes different genera Anisakidae in muscle tissue G. morhua from Norwegian Sea. Cod fishing areas FAO IIa1 (n = 50) IIa2 56) were sampled March 2017. unskinned flesh each examined using a white-light transilluminator. Collected parasites identified genus level, subsample molecular methods. We found higher...

10.1016/j.oceano.2022.03.003 article EN cc-by-nc-nd Oceanologia 2022-03-31

Cod (Gadus morhua), an important fish species in the Baltic Sea, is paratenic host for many parasite species, including zoonotic nematodes, Anisakis sp. and Contracaecum osculatum. We aimed to identify which invertebrate (found situ stomach) are responsible infection of cod with nematodes. found that Crangon crangon Gammarus sp., both prey cod, were infected simplex C. osculatum, respectively. These host-parasite systems reported here first time, implicating as sources

10.1017/s0031182019001124 article EN Parasitology 2019-08-08

Abstract Anisakidae nematodes, especially Contracaecum osculatum , Anisakis simplex and Pseudoterranova decipiens, have dispersed throughout the Baltic Sea over last decade. Despite fact that salmon, Salmo salar is a popular choice among consumers therefore one of most valuable fish species, information about level infection salmon liver with these zoonotic nematodes sparse. In 2020, total 120 livers were inspected for presence parasites showing 13% infected C. . Furthermore, single sp....

10.2478/aopf-2023-0005 article EN cc-by-nc-nd Fisheries & Aquatic Life 2023-03-01

Abstract In the Anisakidae family, there are nematodes, most of which parasitic for important commercial fish species. Both public health risks and socio-economic problems attributed to these parasites. Despite concerns, knowledge metabolism parasites remains unknown. Therefore, main objective this study was investigate receptors drugs oxidative metabolic status two species, Pseudoterranova decipiens (s. s.) Contracaecum osculatum s.), under influence anthelminthic drugs, ivermectin (IVM)...

10.1017/s0031182022000543 article EN cc-by Parasitology 2022-04-21

Abstract The parasite fauna of cod ( Gadus morhus ) is well described, but the life cycles Baltic parasites are known only in general terms. Invertebrates commonly found stomach recognized as intermediate hosts nematodes or acanthocephalans. aim this study was to determine source infection with situ invertebrates present stomach. Our results indicate that Saduria entomon both a and an host cycle Hysterothylacium aduncum Sea.

10.1017/s0022149x1700092x article EN Journal of Helminthology 2017-10-12

Abstract Despite salmon ( Salmo salar L.) being an important fish in the Baltic Sea ecosystem and its fisheries, knowledge about parasite fauna of this top predator is scarce. The Anisakidae nematodes Anisakis spp., Pseudoterranova Contracaecum sp.) found species are zoonotic parasites that hazardous to human health. Due marked increase numbers grey seal Halichoerus grypus ), definitive host sp. increased dispersion these has been observed recent years. aim our study was investigate caught...

10.2478/aopf-2024-0010 article EN cc-by-nc-nd Fisheries & Aquatic Life 2024-07-01

Abstract A dispersion of Anisakidae nematodes (particularly Contracaecum osculatum ) among marine organisms in the Baltic Sea has been reported over last decade. This is line with an increase number grey seal that act as final host for and Pseudoterranova sp., are thus indispensable completion their life cycles. Most attention paid to zoonotic nematode species, like which have noted commercially important fish area. Little known about spread transmission sp. Sea. The aim this study was...

10.1111/jfd.13866 article EN Journal of Fish Diseases 2023-09-26

The zoonotic Anisakidae nematodes Anisakis sp., Pseudoterranova Contracaecum sp. have been found in Baltic Sea fish species. In particular, there has an alarming increase the dispersion of over last decade, due to growing number grey seal (Halichoerus grypus) area. This marine mammal is also final host life cycle. aim our study was summarize presence salmon (Salmo salar) and other commercially important species (cod, herring sprat) from Polish waters. evaluated by parasitological inspection...

10.20944/preprints202307.1061.v1 preprint EN 2023-07-17

In summer 2017 numerous dead round gobies (Neogobius melanostomus) and individuals covered with white coating were observed in the Puck Bay.The aim of our research was to determine microbiological composition goby from Bay, focusing on presence pathogens.Bacteria identified by biochemical methods and, sequencing 16S rRNA.The dominant bacterial species Shewanella baltica, Pseudomonas spp.and Aeromonas spp.-opportunistic pathogens, commonly present many fish species, which may become harmful...

10.24425/pjvs.2023.145017 article EN Polish Journal of Veterinary Sciences 2023-03-06

Cod was one of the most important fish species in Baltic Sea, but its condition is deteriorating for several reasons, including an increasing parasite burden. The aim this study to determine source infection cod with parasites by examination invertebrates found situ stomach. A total 1681 were sampled during four research cruises southern Sea 2012, 2013 and 2014 composition their diet analysed. Each prey item from stomach identified lowest possible taxonomic level a parasitological analysis...

10.1017/s0031182021001414 article EN Parasitology 2021-08-09
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