Ascaridoid parasites in European sardine throughout the annual cycle: Variability in parasitic load according to host stock features

Caballero‐Huertas, Marta; Palomba, Marialetizia; Frigola‐Tepe, Xenia; Muñoz, Marta; Mattiucci, Simonetta; Viñas, Jordi

doi:10.1016/j.ijppaw.2022.12.001

Cited by 7 publications

(4 citation statements)

References 93 publications

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“…Anisakis spp. and trypanorhynch larvae) proved to be valid indicators of distinct Mediterranean biological and genetic stocks as opposed to those from the NE Atlantic waters, of pelagic and demersal fish species, such as the European hake Merluccius merluccius , the Atlantic horse mackerel Trachurus trachurus , the swordfish Xiphias gladius (reviewed in Mattiucci et al, 2015 a ) and the European pilchard Sardina pilchardus (Caballero-Huertas et al , 2022). In the use of parasites as tags, phylogeographic aspects of the parasite species have also been included to determine fish host populations (Mattiucci et al , 2018 a ).…”

Section: What Are Criteria To Choose Certain Tths As ‘Sentinel’ Paras...mentioning

confidence: 99%

An update and ecological perspective on certain sentinel helminth endoparasites within the Mediterranean Sea

Palomba,

Marchiori,

Tedesco

et al. 2023

Parasitology

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The Mediterranean Sea is recognized as a marine biodiversity hotspot. This enclosed basin is facing several anthropogenic-driven threats, such as seawater warming, pollution, overfishing, bycatch, intense maritime transport and invasion by alien species. The present review focuses on the diversity and ecology of specific marine trophically transmitted helminth endoparasites (TTHs) of the Mediterranean ecosystems, aiming to elucidate their potential effectiveness as ‘sentinels’ of anthropogenic disturbances in the marine environment. The chosen TTHs comprise cestodes and nematodes sharing complex life cycles, involving organisms from coastal and marine mid/upper-trophic levels as definitive hosts. Anthropogenic disturbances directly impacting the free-living stages of the parasites and their host population demographies can significantly alter the distribution, infection levels and intraspecific genetic variability of these TTHs. Estimating these parameters in TTHs can provide valuable information to assess the stability of marine trophic food webs. Changes in the distribution of particular TTHs species can also serve as indicators of sea temperature variations in the Mediterranean Sea, as well as the bioaccumulation of pollutants. The contribution of the chosen TTHs to monitor anthropogenic-driven changes in the Mediterranean Sea, using their measurable attributes at both spatial and temporal scales, is proposed.

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Section: What Are Criteria To Choose Certain Tths As ‘Sentinel’ Paras...mentioning

confidence: 99%

An update and ecological perspective on certain sentinel helminth endoparasites within the Mediterranean Sea

Palomba,

Marchiori,

Tedesco

et al. 2023

Parasitology

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“…Furthermore, the reproductive maturation is known to trigger changes in fish immune responses associated, among others, with changes in sex hormones and cortisol levels, which could involve differences according to sex (Campbell et al, 2021). When considering the interactions between fish reproduction and parasites with a complex life cycle, it could be observed seasonal patterns of infection compatible with host reproduction without a host immune response could suggest evolutionary host-parasite interactions (Šimková et al, 2005;Caballero-Huertas et al, 2023). Semelparous chinook salmon increases cortisol release during sexual maturation, which may be related to the rapid senescence that occurs after spawning because elevated cortisol is accompanied by energy depletion and reduction of the immune capacity, increasing their susceptibility to parasites and pathogens (Couch et al, 2020).…”

Section: Linking Fish Traits To Sexual Immune Dimorphismmentioning

confidence: 99%

Sex is a crucial factor in the immune response: an ichthyological perspective

Caballer-Huertas,

Salazar,

Ribas

2023

Preprint

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Sex plays a crucial role in shaping the immune response of vertebrates, leading to differing susceptibilities to diseases between females and males. This review explores the observed sexual dimorphic patterns in different pathogenic infections, immune responses, and molecular events. First, we present a compilation of historical guidelines for incorporating gender/sex as a variable in research studies to enhance scientific rigor, improve research outcomes, and promote better health for both sexes. Following, we focus on examining sex-based differences in immune responses across different taxa, with an in-depth review of available studies on fish, particularly regarding the prevalence of sex in relation to parasites, viruses, and bacteria. Furthermore, we discuss the benefits of considering sex prevalence in fish diseases for advancing fish management in both aquaculture and ecological contexts. Our conviction is that integrating sex as a factor in understanding immune responses will positively influence fish welfare, economic impacts, and policymaking, leading to more tailored and effective treatments.

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“…Climate change (Ramírez et al, 2018;Fernández-Corredor et al, 2021), overfishing (Van Beveren et al, 2014;Ramírez et al, 2021), changes in phytoplankton and zooplankton composition (Van Beveren et al, 2014;Albo-Puigserver et al, 2021), pollution, parasite infections (Pennino et al, 2020;Frigola-Tepe et al, 2022;Caballero-Huertas, 2023), and the combined effects of these factors (Caballero-Huertas et al, 2023) have all become major threats to European sardine populations in the northwestern Mediterranean Sea. The cumulative impact of these stressors has resulted in unsustainable biomass levels and impaired health status (FAO, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Parasitism may affect host physiology, morphology, reproduction, and behaviour (Timi & Poulin, 2020). The inverse relationships between the infection parameters of nematode parasites and the condition of adult sardines from the northwestern Mediterranean have been discussed in several studies (Peninno et al, 2020;Frigola-Tepe et al, 2022;Caballero-Huertas et al, 2023). However, little is known about how parasites can affect sardine eggs and their early development.…”

Section: Introductionmentioning

confidence: 99%

A new threat to Sardina pilchardus in the northwestern Mediterranean: Genetic validation of the presence of lethal parasites in pelagic eggs and ovaries

FRIGOLA-TEPE,

PÉREZ-BIELSA,

CABALLERO-HUERTAS

et al. 2024

Mediterr. Mar. Sci.

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Over the past few decades, the fishing industry and species conservationists have grown increasingly concerned about the decrease in catches and poor health of European sardines (Sardina pilchardus), particularly in the northwestern Mediterranean region. The species is threatened by a number of factors, including parasite illnesses, rising seawater temperatures, and overfishing. Increasing seawater temperatures due to climate change might lead to the proliferation of protistan parasites, such as Ichthyodinium chabelardi. This parasite has been documented in the literature to cause 100% larval mortality in sardines, which may have detrimental effects on fish populations and the fishing industry. We confirmed the existence of I. chabelardi in pelagic eggs and the ovaries of European sardines from the Catalan coast (northwestern Mediterranean) by means of stereomicroscopic analysis and a genetic methodology for parasite identification. The incidence of this infection was 22.5% in ovarian tissue and 11.5% in eggs. In this study, we present new data on the vertical transmission of I. chabelardi from one generation to another in sardines captured in the Mediterranean region. Interpreting outbreaks of I. chabelardi, especially in sardine populations, requires further research into the transmission of infection and improving our understanding of protozoan parasites.

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Ascaridoid parasites in European sardine throughout the annual cycle: Variability in parasitic load according to host stock features

Cited by 7 publications

References 93 publications

An update and ecological perspective on certain sentinel helminth endoparasites within the Mediterranean Sea

An update and ecological perspective on certain sentinel helminth endoparasites within the Mediterranean Sea

Sex is a crucial factor in the immune response: an ichthyological perspective

A new threat to Sardina pilchardus in the northwestern Mediterranean: Genetic validation of the presence of lethal parasites in pelagic eggs and ovaries

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