High mortality in Bufo gargarizans eggs associated with an undescribed Saprolegnia ferax strain in the Republic of Korea
- 주제(키워드) Water mold , Oomycete , Saprolegnia ferax , Amphibians , Water quality , Toad conservation
- 주제(기타) Fisheries
- 주제(기타) Veterinary Sciences
- 설명문(일반) [Groffen, Jordy; Kwon, Sera; Jang, Yikweon] Ewha Womans Univ, Dept Life Sci, Seoul 04096, South Korea; [Groffen, Jordy; Kwon, Sera; Jang, Yikweon] Ewha Womans Univ, Div EcoSci, Seoul 04096, South Korea; [Groffen, Jordy] Virginia Tech, Dept Fish & Wildlife Conservat, Blacksburg, VA 24061 USA; [Oh, Seung-Yoon] Seoul Natl Univ, Sch Biol Sci, Seoul 08826, South Korea; [Borzee, Amael] Nanjing Forestry Univ, Coll Biol & Environm, Nanjing 210037, Peoples R China
- 등재 SCIE, SCOPUS
- 발행기관 INTER-RESEARCH
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000168976
- 본문언어 영어
- Published As https://dx.doi.org/10.3354/dao03434
- PubMed https://pubmed.ncbi.nlm.nih.gov/31854327
초록/요약
Pathogenic water molds have a significant impact on many species, especially amphibians. The genus Saprolegnia is a pathogenic oomycete restricted to aquatic and moist habitats, and its presence is strongly linked to the abundance of amphibians and fishes. We investigated the influence of Saprolegnia presence on egg mortality and egg occurrence under varying environmental conditions in the Asiatic toad Bufo gargarizans at 27 breeding sites in the Republic of Korea. We then assessed the impact of Saprolegnia on the presence of B. gargarizans at the 27 sites surveyed weekly during the B. gargarizans breeding season for 3 consecutive years. We used molecular tools to identify the water molds as belonging to an undescribed S. ferax strain. We demonstrated that the presence of S. ferax was positively associated with higher water conductivity and ponds. In addition, while S. ferax prevalence was associated with a reduction in B. gargarizans breeding activity and breeding success, we could not determine its impact on the subsequent breeding seasons. Our study highlights the potential negative effects of Saprolegnia on amphibian reproduction, although additional research is necessary to determine the relationship between Saprolegnia, its hosts and the impacts of habitat loss on amphibians.
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