Evaluation and Interpretation of Genetic Effective Population Size of Delta Smelt from 2011–2014

Finger, Amanda J.; Schumer, Gregg; Benjamin, Alyssa; Blankenship, Scott

doi:10.15447/sfews.2017v15iss2art5

Cited by 2 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is challenging to maintain a genetically sound population in captivity with the intention of releasing them into the wild (Crawford & Muir, ). Conservation hatcheries strive to slow inevitable evolutionary processes associated with captivity such as genetic or phenotypic changes while capturing, housing and breeding of a species (Finger et al ., ). At the FCCL, culture methods for delta smelt are continuously being improved through research and experimentation.…”

Section: Composition (%) Of Hypomesus Transpacificus Gut Contents By mentioning

confidence: 97%

“…Adults are genetically tested to create a pedigree to determine crossings of least related individuals and to keep equal representation among families with wild‐caught delta smelt added into the breeding pool annually (Finger et al ., ; Lindberg et al ., ). However, all of these efforts to minimise kinship and keep the genetics of the cultured population as close as possible to the wild do not guarantee success as a recent study found the relative reproductive success of pair crosses with at least one wild delta smelt parent was lower than the ones with two cultured parents (Finger et al ., ).…”

Section: Composition (%) Of Hypomesus Transpacificus Gut Contents By mentioning

confidence: 97%

See 1 more Smart Citation

A pilot study of the performance of captive‐reared delta smelt Hypomesus transpacificus in a semi‐natural environment

Hung

Rosales

Kurobe

et al. 2019

Journal of Fish Biology

View full text Add to dashboard Cite

A captive breeding programme was developed in 2008 for delta smelt Hypomesus transpacificus in reaction to dramatic population decline over several decades. We took 526 sub‐adult captive‐reared delta smelt and cultured them for 200 days without providing artificial food or water quality management to assess their performance once released in the wild. The results indicated captive‐reared sub‐adult delta smelt could survive in a semi‐natural environment with uncontrolled water quality and naturally produced wild prey through spawning and into their post spawning phase.

show abstract

Section: Composition (%) Of Hypomesus Transpacificus Gut Contents By mentioning

confidence: 97%

Section: Composition (%) Of Hypomesus Transpacificus Gut Contents By mentioning

confidence: 97%

A pilot study of the performance of captive‐reared delta smelt Hypomesus transpacificus in a semi‐natural environment

Hung

Rosales

Kurobe

et al. 2019

Journal of Fish Biology

View full text Add to dashboard Cite

show abstract

“…The delta smelt is a native osmerid fish endemic to the San Francisco Estuary (SFE) (California, USA) that has become critically endangered over the last few decades (Hobbs et al, 2017;Moyle et al, 2018). Research and management approaches for the species include spatially and temporally intensive gear-based monitoring (i.e., direct capture using nets) of the wild population (Mahardja et al, 2021;US Fish and Wildlife Service et al, 2022), captive rearing with genetic management (Finger et al, 2017(Finger et al, , 2018Lessard et al, 2018), and experimental releases of captive fish to the wild to aid species recovery. Together these efforts aim to better understand the species' biology and inform strategies to prevent its extinction in the wild.…”

mentioning

confidence: 99%

CRISPR‐based environmental DNA detection for a rare endangered estuarine species

Nagarajan,

Sanders,

Kolm

et al. 2024

Environmental DNA

View full text Add to dashboard Cite

Environmental DNA (eDNA) methods complement traditional aquatic monitoring surveys and are especially advantageous for rare and listed species to detect spatial and temporal distribution patterns. However, improvements in ease of use and portability could increase the utility of eDNA methods, leading to more widespread application, including expanding its role in management decision‐making processes. We describe the development of an eDNA detection assay for delta smelt (Hypomesus transpacificus), an endangered fish in the San Francisco Estuary, using SHERLOCK (Specific High‐Sensitivity Enzymatic Reporter Unlocking). SHERLOCK is a clustered regularly interspaced short palindromic repeats (CRISPR)‐based diagnostic tool with the ability to detect species‐specific genetic variants, making it ideal for genetic‐based taxonomic identification of any organism. Because of its high sensitivity and specificity, SHERLOCK is adaptable to eDNA detection in water samples. Here, we describe adaptation of a delta smelt SHERLOCK assay for use with estuarine water eDNA samples. This version of the assay exhibits increased sensitivity compared to the original delta smelt SHERLOCK protocol (new limit of detection approximately three copies per reaction compared to ~300 in original assay) and successfully detected delta smelt eDNA in both experimental and natural contexts. Overall, our results demonstrate that SHERLOCK eDNA detection offers managers an alternative, isothermal methodology, and highlights some challenges for detection of rare, endangered species at low abundance.

show abstract

Evaluation and Interpretation of Genetic Effective Population Size of Delta Smelt from 2011–2014

Cited by 2 publications

References 39 publications

A pilot study of the performance of captive‐reared delta smelt Hypomesus transpacificus in a semi‐natural environment

A pilot study of the performance of captive‐reared delta smelt Hypomesus transpacificus in a semi‐natural environment

CRISPR‐based environmental DNA detection for a rare endangered estuarine species

Contact Info

Product

Resources

About