Homogeneity of parasite assemblages of <i>Dules auriga</i> (Serranidae) in hydrographically heterogeneous sites

Braicovich, Paola E.; Timi, Juan T.

doi:10.1111/jfb.12648

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…The Argentinean research groups are mainly from the UNMdP as well as from the UBA. Some members of these groups are specialists on parasite ecology (Braicovich & Timi, 2015; Cantatore & Timi, 2015) who have published many papers on parasites as biological tags for stock discrimination (Alarcos et al ., 2016; Cantatore et al , 2016). These researchers have also contributed to the taxonomic knowledge about some taxa, such as Monogenea (Irigoitia et al ., 2014), Nematoda (Timi et al ., 2014) and Acanthocephala (Braicovich et al ., 2014).…”

Section: Current Research Groups and Their Geographic Distributionmentioning

confidence: 99%

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

et al. 2016

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The South American subcontinent supports one of the world's most diverse and commercially very important ichthyofauna. In this context, the study of South American fish parasites is of increased relevance in understanding their key roles in ecosystems, regulating the abundance or density of host populations, stabilizing food webs and structuring host communities. It is hard to estimate the number of fish parasites in South America. The number of fish species studied for parasites is still low (less than 10%), although the total number of host-parasite associations (HPAs) found in the present study was 3971. Monogeneans, with 835 species (1123 HPAs, 28.5%), and trematodes, with 662 species (1127 HPAs, 30.9%), are the more diverse groups. Data gathered from the literature are useful to roughly estimate species richness of helminths from South American fish, even though there are some associated problems: the reliability of information depends on accurate species identification; the lack of knowledge about life cycles; the increasing number of discoveries of cryptic species and the geographically biased number of studies. Therefore, the closest true estimations of species diversity and distribution will rely on further studies combining both molecular and morphological approaches with ecological data such as host specificity, geographical distribution and life-cycle data. Research on biodiversity of fish parasites in South America is influenced by problems such as funding, taxonomic impediments and dispersion of research groups. Increasing collaboration, interchange and research networks in the context of globalization will enable a promising future for fish parasitology in South America.

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Section: Current Research Groups and Their Geographic Distributionmentioning

confidence: 99%

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

et al. 2016

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“… Dules auriga ( Actinopterygii : Serranidae ); marine; mesentery; metacestode; WTSA ; Argentina ( Menoret and Ivanov 2012 ; Braicovich and Timi 2015 ).…”

Section: Parasite-host Listmentioning

confidence: 99%

Annotated checklist of fish cestodes from South America

Alves¹,

Chambrier²,

Scholz³

et al. 2017

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An exhaustive literature search supplemented by a critical examination of records made it possible to present an annotated checklist of tapeworms (Cestoda) that, as adults or larvae (metacestodes), parasitize freshwater, brackish water and marine fishes, i.e. cartilaginous and bony fishes, in South America. The current knowledge of their species diversity, host associations and geographical distribution is reviewed. Taxonomic problems are discussed based on a critical evaluation of the literature and information on DNA sequences of individual taxa is provided to facilitate future taxonomic and phylogenetic studies. As expected, the current knowledge is quite uneven regarding the number of taxa and host-associations reported from the principal river basins and marine ecoregions. These differences may not only reflect the actual cestode richness but may also be due to the research effort that has been devoted to unravelling the diversity of these endoparasitic helminths in individual countries. A total of 297 valid species, 61 taxa identified to the generic level, in addition to unidentified cestodes, were recorded from 401 species of fish hosts. Among the recognized cestode orders, 13 have been recorded in South America, with the Onchoproteocephalidea displaying the highest species richness, representing c. 50% of all species diversity. The majority of records include teleost fish hosts (79%) that harbour larval and adult stages of cestodes, whereas stingrays (Myliobatiformes) exhibit the highest proportion of records (39%) among the elasmobranch hosts. Fish cestodes are ubiquitous in South America, being mostly recorded from the Warm Temperate Southeastern Pacific (WTSP; 31%) for marine hosts and the Amazon River basin (45%) for freshwater ones. The following problems were detected during the compilation of literary data: (i) unreliability of many records; (ii) poor taxonomic resolution, i.e. identification made only to the genus or even family level; (iii) doubtful host identification; Alves et al. / ZooKeys 650: 1-205 (2017) 2 and (iv) the absence of voucher specimens that would enable us to verify identification. It is thus strongly recommended to always deposit representative specimens in any type of studies, including faunal surveys and ecological studies. An analysis of the proportion of three basic types of studies, i.e. surveys, taxonomic and ecological papers, has shown a considerable increase of ecological studies over the last decade.

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“…Due to the biodiverse and ubiquitous nature of parasites (Poulin and Morand, 2000 ; Poulin, 2014 ), there is growing appreciation of the roles they play in shaping our knowledge of community ecology. In marine systems, fish parasites undoubtedly account for a significant component of marine biodiversity, and significant advances have been achieved in our understanding of the composition and structure of their assemblages in coastal marine fish (Munoz et al ., 2006 ; Marques et al ., 2011 ; Braicovich and Timi, 2015 ). However, primarily due to the limited access to deep-sea organisms, few studies focus on what shapes parasite community assemblages of deep-sea fish (Dallarés et al ., 2016 ; Espínola-Novelo et al ., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Decay of parasite community similarity with host phylogenetic and geographic distances among deep-sea fish (grenadiers)

2022

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Although parasite community studies are growing in numbers, our understanding of which macro-ecological and evolutionary processes have shaped parasite communities is still based on a narrow range of host–parasite systems. The present study assessed the diversity and endoparasite species composition in New Zealand deep-sea fish (grenadiers, family Macrouridae), and tested the effects of host phylogeny and geography on the structure of endoparasite communities using a distance decay framework. We found that grenadiers from the Chatham Rise harboured a surprisingly high diversity of digeneans, cestodes and nematodes, with different species of grenadiers having different parasite assemblages. Our results demonstrate that community similarity based on the presence/absence of parasites was only affected by the phylogenetic relatedness among grenadier species. In contrast, both phylogenetic distance among grenadiers (measured as the number of base-pair differences of DNA sequences) and geographic distance between sample locations influenced the similarity of parasite communities based on the parasites' prevalence and mean abundance. Our key findings highlight the significant effect of deep-sea host phylogeny in shaping their parasite assemblages, a factor previously neglected in studies of parasite communities in deep-sea systems.

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Homogeneity of parasite assemblages of Dules auriga (Serranidae) in hydrographically heterogeneous sites

Cited by 6 publications

References 37 publications

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

Helminth parasites of South American fishes: current status and characterization as a model for studies of biodiversity

Annotated checklist of fish cestodes from South America

Decay of parasite community similarity with host phylogenetic and geographic distances among deep-sea fish (grenadiers)

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