Variation in stable isotope (δ18O and δ13C) signatures in the sagittal otolith carbonate of king threadfin, Polydactylus macrochir across northern Australia reveals multifaceted stock structure

Newman, Stephen J.; Allsop, Quentin; Ballagh, Aaron C.; Garrett, Rod N.; Gribble, Neil; Meeuwig, Jessica J.; Mitsopoulos, Gabby E.A.; Moore, Bradley R.; Pember, Matthew B.; Rome, Ben M.; Saunders, Thor; Skepper, Craig L.; Stapley, Jason; Herwerden, Lynne van; Welch, David J.

doi:10.1016/j.jembe.2010.09.011

Cited by 19 publications

(14 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…macrochir , suggesting fish from these locations may form single, intermixing populations. Newman et al (2010) and Horne et al (2012) found no significant difference in whole otolith stable isotope ratios and mtDNA signatures, respectively, among fish from the south‐eastern Gulf of Carpentaria, supporting the hypothesis of movement within this region. Life‐history parameters, including von Bertalanffy growth function coefficients backcalculated length‐at‐age 2 years, and patterns of length and age at sex change were also largely similar among locations in this region (Moore et al , 2012), further corroborating the hypothesis of a single population.…”

Section: Discussionmentioning

confidence: 58%

“…Life‐history parameters, including von Bertalanffy growth function coefficients backcalculated length‐at‐age 2 years, and patterns of length and age at sex change were also largely similar among locations in this region (Moore et al , 2012), further corroborating the hypothesis of a single population. Although not included in the studies of Newman et al (2010) or Horne et al (2012), fish from Lucinda were found to exhibit similar growth patterns to those from Townsville (Moore et al , 2012). While the consistency of these results imparts a greater degree of confidence to those of any one technique used in isolation, it is important to note that it cannot be unequivocally concluded that such similarities prove the existence of a single, intermixing, population in each of these regions.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Parasites as indicators of movement and population connectivity of a non‐diadromous, tropical estuarine teleost: king threadfin Polydactylus macrochir

Moore

Welch

Newman

et al. 2012

Journal of Fish Biology

View full text Add to dashboard Cite

Temporal and spatial patterns in parasite assemblages were examined to evaluate the degree of movement and connectivity of post-recruitment life-history stages of a large, non-diadromous tropical estuarine teleost, king threadfin Polydactylus macrochir, collected from 18 locations across northern Australia. Ten parasites types (juvenile stages of two nematodes and seven cestodes, and adults of an acanthocephalan) were deemed to be suitable for use as biological tags, in that they were considered to have a long residence time in the fish, were relatively easy to find and were morphologically very different to each other which aided discrimination. Univariate and discriminant function analysis of these parasites revealed little difference in temporal replicates collected from five locations, suggesting that the parasite communities were stable over the timeframes explored. Univariate, discriminant function, and Bray-Curtis similarity analyses indicated significant spatial heterogeneity, with Bray-Curtis classification accuracies ranging from 55 to 100% for locations in north-western and northern Australia, 24 to 88% in the Gulf of Carpentaria, and 39 to 88% on the east coast of Queensland. Few differences were observed among locations separated by<200 km. The observed patterns of parasite infection are in agreement with concurrent studies of movement and connectivity of P. macrochir in that they indicate a complex population structure across northern Australia. These results should be considered when reviewing the management arrangements for this species.

show abstract

Section: Discussionmentioning

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Parasites as indicators of movement and population connectivity of a non‐diadromous, tropical estuarine teleost: king threadfin Polydactylus macrochir

Moore

Welch

Newman

et al. 2012

Journal of Fish Biology

View full text Add to dashboard Cite

show abstract

“…Non‐parametric routines such as ANOSIM have been routinely used to determine fish movement and identify stocks where the data do not meet the requirements of parametric designs ( i.e. multivariate normality and equal variance–covariance matrices) (Gillanders & Kingsford, 2000, 2003; Timi & Lanfranchi, 2009; Newman et al , 2010). Although the technique does not provide an estimate of the per cent of fish correctly assigned to a particular site, significant differences suggest that little, if any, mixing occurs between sites.…”

Section: Methodsmentioning

confidence: 99%

Stock structure of blue threadfin Eleutheronema tetradactylum across northern Australia, as indicated by parasites

Moore

Stapley²,

Allsop³

et al. 2011

Journal of Fish Biology

View full text Add to dashboard Cite

The parasite fauna of the blue threadfin Eleutheronema tetradactylum, collected from 14 sites across northern Australia, was examined to evaluate the degree of movement and subsequent stock structure of the fish. Univariate and multivariate analysis of nine 'permanent' parasite species [the nematodes Anisakis (type I) and Terranova (type II), the cestodes Otobothrium australe, Pterobothrium pearsoni, Pterobothrium sp. A, Callitetrarhynchus gracilis, Parotobothrium balli and Nybelinia sp., and the acanthocephalan Pomphorhynchus sp.] demonstrated little similarity between sites, indicating limited mixing and therefore long-term separation of post-juvenile fish. As such, the effects of fishing are likely to be localized within the current administrative boundaries, implying little need for interstate co-operative management. Within each jurisdiction, management of E. tetradactylum populations, including the establishment of harvest strategies and fishery regulations, should be conducted in a way that recognizes the resident nature of the fish.

show abstract

“…), stable isotopes (Hobson and Wassenaar , Newman et al. ), and genetics (Baker and Palumbi , Paetkau et al. , Barr et al.…”

Section: Introductionmentioning

confidence: 99%

Assessing spatial discreteness of Hudson Bay polar bear populations using telemetry and genetics

et al. 2018

View full text Add to dashboard Cite

Identifying biologically meaningful populations is essential to the conservation and management of at‐risk species. Natural populations can be delineated using a variety of methods including tag recoveries, telemetry, stable isotopes, and population genetics, but understanding the processes that lead to and maintain the demographic and genetic distinctiveness of populations is also important. We combined telemetric and genetic data from three adjacent polar bear (Ursus maritimus) populations in Hudson Bay, Canada, to compare two methods of defining structure. We compared the population structure inferred from utilization distributions (UDs) of 62 adult female polar bears tracked by satellite telemetry during the mating season by grouping individuals in two ways: (1) by the management population in which individuals were sampled (capture location), and (2) by population genetic assignment of individuals using marker data (genetic assignment). We found that space‐use overlap varied depending on how individuals were grouped. We found 19.1–34.4% UD overlap when capture locations were used to group individuals, but there was no UD overlap for bears across different genetic groupings. Wildlife management objectives should include consideration of genetic diversity and differentiation, and we found that using genetic assignment to augment analyses from telemetric data provided additional insights on population delineation.

show abstract

Variation in stable isotope (δ18O and δ13C) signatures in the sagittal otolith carbonate of king threadfin, Polydactylus macrochir across northern Australia reveals multifaceted stock structure

Cited by 19 publications

References 22 publications

Parasites as indicators of movement and population connectivity of a non‐diadromous, tropical estuarine teleost: king threadfin Polydactylus macrochir

Parasites as indicators of movement and population connectivity of a non‐diadromous, tropical estuarine teleost: king threadfin Polydactylus macrochir

Stock structure of blue threadfin Eleutheronema tetradactylum across northern Australia, as indicated by parasites

Assessing spatial discreteness of Hudson Bay polar bear populations using telemetry and genetics

Contact Info

Product

Resources

About