Seasonal dynamics of Dactylogyrus species (Monogenea: Dactylogyridae) on wild and farmed goldfish (Carassius auratus): Implication for prevention of dactylogyriasis

Li, Wenxiang; Yang, Baojuan; Cheng, Jiangwen; Zou, Hong; Li, Ming; Wang, Guitang

doi:10.1016/j.aqrep.2022.101327

Cited by 5 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A number of studies exist on seasonal changes in monogenean populations globally (e.g., Chubb 1977 ; Valtonen et al 1990 ; Mo, 1992 ; Gutierrez and Martorelli 1994 ; Ozer and Erdem 1999 ; Dávidová et al 2005 ; Aydogdu 2006 ; Blažek et al 2008 ; Madanire-Moyo et al 2011 ; Poulin 2020 ; Li et al 2022 ; Mo et al 2023 ). Seasonal changes in parasitological indices such as prevalence and intensity have most commonly been associated with seasonal variability in water temperature.…”

Section: Introductionmentioning

confidence: 99%

“…In the tropics, however, where temperature is more stable throughout the year, freshwater monogenean infestations do not appear to change significantly among seasons (Poulin 2020 ). Despite this general trend, some monogenean species in temperate regions show greater prevalence and abundance in colder months (Valtonen et al 1990 ; Li et al 2022 ), while others show multiple instances of high prevalence and intensity throughout the year (Chubb 1977 ; Li et al 2022 ). It is possible that variability in other environmental factors, such as pH and the concentration of dissolved oxygen, may also be relevant, as unlike endoparasites, ectoparasites are exposed to external conditions, which may influence temporal parasite population changes alongside temperature.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Season, size, and sex: factors influencing monogenean prevalence and intensity on Gambusia affinis in New Zealand

Renner,

Duggan

2024

Parasitol Res

View full text Add to dashboard Cite

A number of studies have been conducted on monogenean seasonality, though primarily in continental regions with wide annual temperatures ranges. We investigated seasonal changes in the prevalence and intensity of Salsuginus seculus infesting sexually dimorphic western mosquitofish (Gambusia affinis) in New Zealand. This represents the first examination of seasonality for this species globally, and the first seasonal assessment of any monogenean population in New Zealand, a temperate country with a mild oceanic climate. Prevalence and intensity of S. seculus with respect to fish size and sex was also examined. Prevalence of S. seculus changed temporally, peaking in summer, and was strongly positively correlated with algal concentrations. This relationship may be associated with increasing food levels, leading to an increase in fish courting and mating, resulting in high numbers and close physical associations of G. affinis individuals, facilitating transmission of the monogeneans. Thus, biotic factors may be important in determining temporal changes in S. seculus prevalence in New Zealand. Female G. affinis had a significantly higher prevalence and mean intensity of S. seculus than males. Longer fish had a higher mean intensity and prevalence of S. seculus. Female G. affinis likely host disproportionately more monogeneans as they are larger than males. Alternatively, females may have a compromised immune response during reproductive periods. Overall, seasonal change was observed in S. seculus prevalence and intensity under New Zealand’s mild climatic conditions, and the larger female G. affinis in this dimorphic species supported a greater prevalence and intensity of infestation than males.

show abstract