Stock discrimination of South African sardine (Sardinops sagax) using a digenean parasite biological tag

Weston, Laura Frances; Reed, Cecile; Hendricks, Marc; Winker, Henning; Lingen, Carl D. van der

doi:10.1016/j.fishres.2014.11.002

Cited by 21 publications

(10 citation statements)

References 30 publications

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“…By increasing the knowledge we have on parasite loads and infection patterns, and expanding the sampled species and areas, we can make more informed management decisions regarding commercially important fish species. For example; Reed et al (2012) , MacKenzie and Abaunza 2005 and van der Lingen et al (2015) documented the parasite assemblage of South African sardine Sardinops sagax and identified a digenean parasite biotag which subsequent studies have shown to provide strong evidence for multiple sardine stocks ( van der Lingen et al, 2015 ; Weston et al, 2015 ). Stock-specific sardine assessment models that incorporate these parasite data have been developed ( De Moor et al, 2017 ) and are now used in management of the sardine fishery.…”

Section: Discussionmentioning

confidence: 99%

Parasite community structure as a predictor of host population structure: An example using Callorhinchus capensis

Morris

Ploeg

Awa

et al. 2019

International Journal for Parasitology: Parasites and Wildlife

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This paper describes the parasite community structure of the Cape elephant fish or St Joseph shark (Callorhinchus capensis) caught off the West and South Coast of South Africa between 2010 and 2015. These data were used to build species accumulation curves (SAC) and calculate biodiversity indices including rarefied species richness, Shannon Weiner's diversity index, Simpson's index and Pielou's J index. The biodiversity indices were correlated with the host's biological data to determine how these affected the parasite community structure and provide insight into the host's population structure. The parasites identified in C. capensis (n = 259) include a cestode (Gyrocotyle plana), two monogeneans (Callorhynchicotyle callorhynchi and Callorhinchicola multitesticulatus), an isopod (Anilocra capensis) and a leech (Branchellion sp.). Gyrocotyle plana was the most prevalent at 71.43% and the monogenean C. callorhynchi had the highest mean abundance (1.55 ± 0.45 parasites.fish−1) and the highest mean infection intensity (4.79 ± 0.66 parasites.infected fish−1). The SAC and biodiversity measures indicate a uniform parasite community across the sampled host population, suggesting a highly interactive shark community with no evidence for population structure. These results show that parasite community structure can be used to infer their host's population structure.

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Section: Discussionmentioning

confidence: 99%

Parasite community structure as a predictor of host population structure: An example using Callorhinchus capensis

Morris

Ploeg

Awa

et al. 2019

International Journal for Parasitology: Parasites and Wildlife

Self Cite

View full text Add to dashboard Cite

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“…Accordingly, we make use of parasites as an additional biological marker for the discrimination of C. obscurus stocks on the eastern coast of Tunisia. Parasites have been widely used as biological tags to provide information on the stock discreteness of their fish hosts in many parts of the world ocean (Cantatore & Timi, 2015; Weston et al ., 2015). However, the selection of suitable parasites has been discussed by several authors and a number of specific guidelines have been presented in the literature highlighting the requirements for a parasite species to be considered as a biological tag candidate (see MacKenzie & Abaunza, 1998, 2013; Mackenzie & Hemmingsen, 2015).…”

Section: Discussionmentioning

confidence: 99%

Stock discrimination of Chelidonichthys obscurus (Triglidae) in the central Mediterranean Sea using morphometric analysis and parasite markers

et al. 2019

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Assessing fish stocks has important implications for fisheries management and conservation biology. Gurnards are marine demersal fish that commonly occur in the Mediterranean, but their population in this region remains to be quantified. This study examines the population structure of the longfin gurnard Chelidonichthys obscurus (Walbaum, 1792) in waters off eastern Tunisia, using morphometry and parasite assemblages. A total of 134 fish are investigated from two studied zones – the Gulf of Hammamet and the Gulf of Gabès. Discriminant analysis is used to compare gurnard populations in the two studied zones using 13 morphometric characters and the infection parameters of seven parasites. Morphometric analysis reveals strong spatial variations between the studied zones, providing evidence for the existence of an ecological differentiation along the eastern Tunisian coast. Mahalanobis distances show that body height, pectoral fin length and first dorsal fin length are the most salient morphometric characters for determining the position of samples from the Gulf of Gabès. The effectiveness of using parasites to study longfin gurnard stocks is uncertain. The use of short-lived parasites as biological tags is questionable, at least in the present case. Future research, based on complementary approaches such as otolith microchemistry and genetics, may improve our understanding of the global stock structure of longfin gurnard to suitably inform regional organizations involved in fisheries management.

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“…In the eyes of fish collected off South Africa, where this species is known as the South African sardine, Weston et al (2015) found a significant difference in the abundance of a "tetracotyle" type larval trematode, tentatively identified as Cardiocephaloides sp. (Reed et al, 2012), and that difference supports the existence of a putative western and a putative southern stock with some degree of mixing.…”

Section: Parasites As Biological Tagsmentioning

confidence: 99%

Use of parasites to clarify residency and migration patterns of Pacific sardine (Sardinops sagax) in the California Current

Jacobson¹,

Baldwin²,

Banks³

et al. 2019

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Stock discrimination of South African sardine (Sardinops sagax) using a digenean parasite biological tag

Cited by 21 publications

References 30 publications

Parasite community structure as a predictor of host population structure: An example using Callorhinchus capensis

Parasite community structure as a predictor of host population structure: An example using Callorhinchus capensis

Stock discrimination of Chelidonichthys obscurus (Triglidae) in the central Mediterranean Sea using morphometric analysis and parasite markers

Use of parasites to clarify residency and migration patterns of Pacific sardine (Sardinops sagax) in the California Current

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