Peter M. Grewe
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View article: Sex-specific dispersal patterns of the threatened Northern River Shark
Sex-specific dispersal patterns of the threatened Northern River Shark Open
Quantifying genetic connectivity between populations of a species is important to understand its conservation and management needs. Genetic connectivity implies gene flow among discrete populations occurring via the dispersal of individual…
View article: Genome scans reveal extensive population structure in three neritic tuna and tuna-like species in the Indian Ocean
Genome scans reveal extensive population structure in three neritic tuna and tuna-like species in the Indian Ocean Open
Neritic tunas and tuna-like species are an important resource for many coastal nations1 worldwide supporting both commercial and artisanal fisheries, but little is known about their population structure at a spatial scale required for effe…
View article: Hot alkaline lysis gDNA extraction from formalin-fixed archival tissues
Hot alkaline lysis gDNA extraction from formalin-fixed archival tissues Open
Formalin fixation of natural history specimens and histopathological material has historically been viewed as an impediment to successful genomic analysis. However, the development of extraction methods specifically tailored to contend wit…
View article: An R-based tool for identifying sex-linked markers from restriction site-associated DNA sequencing with applications to elasmobranch conservation
An R-based tool for identifying sex-linked markers from restriction site-associated DNA sequencing with applications to elasmobranch conservation Open
Identifying sex-linked markers from genomic data has both theoretical and applied importance, especially in conservation. Yet, few methods and tools exist to detect such markers from Restriction-site-Associated DNA sequencing reads and eve…
View article: Evaluating DNA cross-contamination risk using different tissue sampling procedures on board fishing and research vessels
Evaluating DNA cross-contamination risk using different tissue sampling procedures on board fishing and research vessels Open
Sample cross-contamination remains a pervasive issue in genetics and genomics. With growing reliance on molecular methods for managing marine resources, the need to ensure the integrity of tissue samples that underpin these methods has nev…
View article: Stepping up to genome scan allows stock differentiation in the worldwide distributed blue shark <i>Prionace glauca</i>
Stepping up to genome scan allows stock differentiation in the worldwide distributed blue shark <i>Prionace glauca</i> Open
The blue shark Prionace glauca is a top predator with one of the widest geographical distributions of any shark species. It is classified as Critically Endangered in the Mediterranean Sea, and Near Threatened globally. Previous genetic stu…
View article: Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture
Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture Open
Globally, tunas are among the most valuable fish stocks, but are also inherently difficult to monitor and assess. Samples of larvae of Western Atlantic bluefin tuna Thunnus thynnus (Linnaeus, 1758) from standardized annual surveys in the n…
View article: Lack of genetic differentiation in yellowfin tuna has conservation implications in the Eastern Pacific Ocean
Lack of genetic differentiation in yellowfin tuna has conservation implications in the Eastern Pacific Ocean Open
Yellowfin tuna, Thunnus albacares , is an important global fishery and of particular importance in the Eastern Pacific Ocean (EPO). According to the 2019 Inter-American Tropical Tuna Commission (IATTC) assessment, yellowfin tuna within the…
View article: An R-based tool for identifying sex-linked markers from Restriction site-Associated DNA sequencing with applications to elasmobranch conservation
An R-based tool for identifying sex-linked markers from Restriction site-Associated DNA sequencing with applications to elasmobranch conservation Open
Identifying sex-linked markers from genomic data has both theoretical and applied importance, especially in conservation. Yet, few methods and tools exist to detect such markers from Restriction-site-Associated DNA sequencing reads and eve…
View article: Stepping up to genome scan allows stock differentiation in the worldwide distributed blue shark Prionace glauca
Stepping up to genome scan allows stock differentiation in the worldwide distributed blue shark Prionace glauca Open
The blue shark Prionace glauca is a top predator with one of the widest geographic distributions of any shark species, yet classified as critically endangered in the Mediterranean Sea, and Near Threatened globally. Previous genetic studies…
View article: Sample size requirements for genetic studies on yellowfin tuna
Sample size requirements for genetic studies on yellowfin tuna Open
In population genetics, the amount of information for an analytical task is governed by the number of individuals sampled and the amount of genetic information measured on each of those individuals. In this work, we assessed the numbers of…
View article: Connectivity of broadbill swordfish targeted by the Australian Eastern Tuna and Billfish Fishery with the broader Western Pacific Ocean
Connectivity of broadbill swordfish targeted by the Australian Eastern Tuna and Billfish Fishery with the broader Western Pacific Ocean Open
K. Evans, P. Grewe, S. Foster, R. Gunasekera, M. Lansdell, S. Meredith, S. Sarau, S. Tracey, M. Wichman. 2021. Connectivity of broadbill swordfish targeted by the Australian Eastern Tuna and Billfish Fishery with the broader Western Pacifi…
View article: Defining the stock structures of key commercial tunas in the Pacific Ocean II: Sampling considerations and future directions
Defining the stock structures of key commercial tunas in the Pacific Ocean II: Sampling considerations and future directions Open
Delineating the stock structure of highly-mobile, wide-ranging fishes subject to exploitation is a challenging task, yet one that is fundamental to optimal fisheries management. A case in point are stocks of skipjack tuna (Katsuwonus pelam…
View article: Defining the stock structures of key commercial tunas in the Pacific Ocean I: Current knowledge and main uncertainties
Defining the stock structures of key commercial tunas in the Pacific Ocean I: Current knowledge and main uncertainties Open
Tunas are the focus of significant fisheries in the Pacific Ocean, where landings of four species – skipjack tuna (Katsuwonus pelamis), yellowfin tuna (Thunnus albacares), bigeye tuna (Thunnus obesus) and albacore tuna (Thunnus alalunga) –…
View article: Genome scans discriminate independent populations of the blue shark Prionace glauca
Genome scans discriminate independent populations of the blue shark Prionace glauca Open
The blue shark Prionace glauca is a cosmopolitan species that inhabits all oceans worldwide except the poles. Several IUCN regional assessments have classified it as Near Threatened, mostly due to overfishing. Previous genetic studies that…
View article: Accounting for kin sampling reveals genetic connectivity in Tasmanian and New Zealand school sharks, <i>Galeorhinus galeus</i>
Accounting for kin sampling reveals genetic connectivity in Tasmanian and New Zealand school sharks, <i>Galeorhinus galeus</i> Open
Fishing represents a major problem for conservation of chondrichthyans, with a quarter of all species being overexploited. School sharks, Galeorhinus galeus , are targeted by commercial fisheries in Australia and New Zealand. The Australia…
View article: Robust estimates of a high <i>N</i> <sub>e</sub> / <i>N</i> ratio in a top marine predator, southern bluefin tuna
Robust estimates of a high <i>N</i> <sub>e</sub> / <i>N</i> ratio in a top marine predator, southern bluefin tuna Open
Genetic and demographic analyses indicate good conservation news for southern bluefin tuna.
View article: Data from: Robust estimates of a high Ne/N ratio in a top marine predator, southern bluefin tuna
Data from: Robust estimates of a high Ne/N ratio in a top marine predator, southern bluefin tuna Open
Genetic studies of several marine species with high fecundity have produced “tiny” estimates (≤10−3) of the ratio of effective population size (Ne) to adult census size (N), suggesting that even very large populations might be at genetic r…
View article: A draft genome assembly of southern bluefin tuna Thunnus maccoyii
A draft genome assembly of southern bluefin tuna Thunnus maccoyii Open
Tuna are large pelagic fish whose populations are close to panmixia. In addition, they are threatened species, so it is important for the maintenance and monitoring of genetic diversity that genetic information at a genome level be obtaine…
View article: Evidence of discrete yellowfin tuna (Thunnus albacares) populations demands rethink of management for this globally important resource
Evidence of discrete yellowfin tuna (Thunnus albacares) populations demands rethink of management for this globally important resource Open
Tropical tuna fisheries are central to food security and economic development of many regions of the world. Contemporary population assessment and management generally assume these fisheries exploit a single mixed spawning population, with…
View article: A new tool in the toolbox for large-scale, high-throughput fisheries mark-recapture studies using genetic identification
A new tool in the toolbox for large-scale, high-throughput fisheries mark-recapture studies using genetic identification Open
The lack of independently verifiable estimates of catches and fisheries independent estimates of abundance and fishing mortality are major sources of uncertainty in the management of many fisheries. DNA profiling provides the potential to …