Additional notes on Texas Seaside Sparrows (Ammospiza maritima sennetti): An update to Griscom 1948

Woltmann, Stefan; Roeder, Mackenzie R; Xiong, Ally Pychy; Hill, Christopher E.; Conway, Mark

doi:10.1676/1559-4491-131.4.750

Cited by 6 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The remaining subspecies are resident in marshes along the Gulf of Mexico. The Texas seaside sparrow, A. m. sennetti (Allen 1888), is found in the coastal marshes of southern Texas (Austin 1968(Austin , 1983Gill et al 2020;Woltmann et al 2020), and the Louisiana seaside sparrow (A. m. fisheri [Chapman 1899]) ranges from Texas to western Florida (Austin 1983).…”

Section: Introductionmentioning

confidence: 99%

Genome-wide assessment of population structure in Florida’s coastal seaside sparrows

et al. 2021

Self Cite

View full text Add to dashboard Cite

The distribution and genetic relatedness of subspecies among the populations of seaside sparrow (Ammospiza maritima [Wilson 1810]) along the coast of Florida are poorly understood. We evaluated genetic support for three defined Florida Gulf coast subspecies, as well as a fourth subspecies on the Atlantic coast, and assessed whether genetic clusters corresponded geographically with the defined ranges of subspecific designations. Data generated using double digest restriction site-associated DNA sequencing (ddRADseq) suggest that the Florida endemics, A. m. peninsulae and A. m. juncicola, are genetically indistinguishable, but that the third Gulf coast subspecies, A. m. fisheri, and the Atlantic coast subspecies, A. m. macgillivraii, are genetically distinct units. These three distinct genetic groups were identified in three main geographic areas within the state of Florida, USA: (1) Florida's panhandle (2) Florida's Gulf coast peninsula, and (3) the Atlantic coast. Admixture was detected between genetic clusters in sites near the transition zone between the Florida panhandle and peninsula. Geographic distributions of genetic clusters on the Gulf coast do not match currently defined subspecific ranges for A. m. fisheri and A. m. peninsulae.

show abstract

Section: Introductionmentioning

confidence: 99%

Genome-wide assessment of population structure in Florida’s coastal seaside sparrows

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Genetic analysis of federally endangered Cape Sable seaside sparrow subpopulations in the Greater Everglades, USA

Beaver,

Virzi,

Hunter

2023

Conserv Genet

View full text Add to dashboard Cite

The federally endangered Cape Sable seaside sparrow (Ammospiza maritima mirabilis) is endemic to the Greater Everglades ecosystem in southern Florida, inhabiting fragmented marl prairies in six individual subpopulations. The subspecies is threatened by loss of breeding habitat from fire and water management. Genetic information is severely limited for the subspecies but could help inform decisions regarding subpopulation protections and potential translocations for genetic rescue. To provide genetic data and inform management efforts, feather samples were collected across five subpopulations (designated A–E) and protocols were tested to optimize DNA extraction yields. We assessed four mitochondrial DNA markers (N = 36–69) and 12 nuclear microsatellite loci (N = 55) in 108 sparrows. Mitochondrial DNA sequences revealed low haplotype diversity, with NADH dehydrogenase-2 haplotypes matching to most other extant subspecies and to the Atlantic coast subspecies. Nuclear diversity was low compared to other subspecies, but similar across subpopulations. Samples grouped as one population when analyzed by Principal Component Analysis, Bayesian modelling and genetic distance metrics. Limited genetic emigration was detected from one putative migrant. Relatedness was significantly different for sparrows in the most geographically distant subpopulation (A), likely reflecting high self-recruitment and natal site fidelity (P = 0.003). The low to moderate effective population size (NE = 202.4; NE:NC = 0.06) and generation time estimates indicated that unique genetic variation could be lost quickly during stochastic events. The sample sizes were limited, which reduced the power to comprehensively address recent population size reductions and any subsequent loss of genetic diversity.

show abstract

Genetic data disagree with described subspecies ranges for Seaside Sparrows on the Atlantic coast

Roeder

Hill

Elphick

et al. 2021

Ornithological Applications

View full text Add to dashboard Cite

Seaside Sparrows (Ammospiza maritima) are tidal salt marsh endemic passerines found along the Atlantic and Gulf coasts of North America. Currently, there are 7 described subspecies, and “MacGillivray’s” Seaside Sparrow (A. m. macgillivraii) is the name given to the Atlantic coast subspecies breeding from North Carolina to northern Florida. In 2019 the US Fish and Wildlife Service received a petition to list this subspecies under the Endangered Species Act due to shrinking populations and loss of marsh habitat, which necessitated a Species Status Assessment. As part of the Species Status Assessment, we analyzed genetic (microsatellite and mitochondria) data from 464 Seaside Sparrows from Connecticut to Florida, USA, to infer population connectivity (gene flow) among Atlantic coast populations, and to assess the concordance of population genetic data with the putative ranges of the subspecies. Bayesian cluster analysis (program Structure) indicates three genetically distinct population segments: (1) Florida + Georgia, (2) Charleston, South Carolina, and (3) North Carolina to Connecticut. The population in Charleston, South Carolina was the most strongly differentiated based on microsatellite data, and harbored a unique mitochondrial haplotype not shared by other sampling locations, possibly reflecting long-standing isolation. Our results indicate population genetic discordance with currently described ranges of the subspecies of Seaside Sparrow and provide grounds for the consideration of separate management plans for the three populations.

show abstract

Additional notes on Texas Seaside Sparrows (Ammospiza maritima sennetti): An update to Griscom 1948

Cited by 6 publications

References 24 publications

Genome-wide assessment of population structure in Florida’s coastal seaside sparrows

Genome-wide assessment of population structure in Florida’s coastal seaside sparrows

Genetic analysis of federally endangered Cape Sable seaside sparrow subpopulations in the Greater Everglades, USA

Genetic data disagree with described subspecies ranges for Seaside Sparrows on the Atlantic coast

Contact Info

Product

Resources

About