Deciphering ecological barriers to North American river otter (Lontra canadensis) gene flow in the Louisiana landscape

被引:43
|
作者
Latch, Emily K. [1 ]
Scognamillo, Daniel G. [2 ]
Fike, Jennifer A. [1 ]
Chamberlain, Michael J. [3 ]
Rhodes, Olin E., Jr. [1 ]
机构
[1] Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA
[2] Stephen F Austin State Univ, Coll Forestry & Agr, Nacogdoches, TX 75962 USA
[3] Louisiana State Univ, Ctr Agr, Sch Renewable Nat Resources, Baton Rouge, LA 70803 USA
关键词
D O I
10.1093/jhered/esn009
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
For North American river otters (Lontra canadensis) in Louisiana, statewide distribution, availability of aquatic habitats, and the absence of physical barriers to dispersal might suggest that they exist as a large, panmictic population. However, the wide variety of habitat types in this region, and the dynamic nature of these habitats over time, could potentially structure river otter populations in accordance with cryptic landscape features. Recently developed landscape genetic models offer a spatially explicit approach that could be useful in identifying potential barriers to the movement of river otters through the dynamic aquatic landscape of Louisiana. We used georeferenced multilocus microsatellite genotypes in spatially implicit (STRUCTURE) and spatially explicit (GENELAND) models to characterize patterns of landscape genetic structure. All models identified 3 subpopulations of river otters in Louisiana, corresponding to Inland, Atchafalaya River, and Mississippi River regions. Variation in breeding seasonality, brought about by variation in prey abundance between inland and coastal populations, may have contributed to genetic differentiation among populations. It is also possible that the genetic discontinuities we observed indicate a correlation between otter distribution and access to freshwater. Regardless of the mechanism, it is likely that any genetic differentiation among subpopulations is exacerbated by relatively poor dispersal.
引用
收藏
页码:265 / 274
页数:10
相关论文
共 50 条
  • [21] The identification of a genetically unique piroplasma in North American river otters (Lontra canadensis)
    Birkenheuer, A. J.
    Harms, C. A.
    Neel, J.
    Marr, H. S.
    Tucker, M. D.
    Acton, A. E.
    Tuttle, A. D.
    Stoskopf, M. K.
    PARASITOLOGY, 2007, 134 : 631 - 635
  • [22] Mercury levels in mink (Mustela vison) and River Otter (Lontra canadensis) from northeastern North America
    Yates, DE
    Mayack, DT
    Munney, K
    Evers, DC
    Major, A
    Kaur, T
    Taylor, RJ
    ECOTOXICOLOGY, 2005, 14 (1-2) : 263 - 274
  • [23] Hematology and serum biochemistry parameters of North American river otters (Lontra canadensis)
    Tocidlowski, ME
    Spelman, LH
    Sumner, PW
    Stoskopf, MK
    JOURNAL OF ZOO AND WILDLIFE MEDICINE, 2000, 31 (04) : 484 - 490
  • [24] Trapping and handling of North American river otters (Lontra canadensis) in a managed marsh
    Belfiore, Natalia M.
    JOURNAL OF ZOO AND WILDLIFE MEDICINE, 2008, 39 (01) : 13 - 20
  • [25] Co-exposures to trace elements and polycyclic aromatic compounds (PACs) impacts North American river otter (Lontra canadensis) baculum
    Thomas, Philippe J.
    Newell, Emily E.
    Eccles, Kristin
    Holloway, Alison C.
    Idowu, Ifeoluwa
    Xia, Zhe
    Hassan, Elizabeth
    Tomy, Gregg
    Quenneville, Cheryl
    CHEMOSPHERE, 2021, 265
  • [26] Gastric dilatation-volvulus in two North American river otters (Lontra canadensis)
    Cummings, Charles
    Pirie, Gordon
    Sasaki, Emi
    Wakamatsu, Nobuku
    VETERINARY RECORD CASE REPORTS, 2021, 9 (03):
  • [27] Implantation and Parturition Dates of North American River Otters, Lontra canadensis, in Southern Missouri
    Roberts, Nathan M.
    Crimmins, Shawn M.
    Hamilton, David A.
    Gallagher, Elsa
    CANADIAN FIELD-NATURALIST, 2012, 126 (01): : 28 - 30
  • [28] Summer Diet Characteristics of North American River Otters (Lontra canadensis) in Central Illinois
    Fretueg, Gregory R.
    Martin, Terrance J.
    Widga, Chris
    Ruez, Dennis R., Jr.
    AMERICAN MIDLAND NATURALIST, 2015, 173 (02): : 294 - 304
  • [29] FIELD ANESTHESIA IN THE NORTH-AMERICAN RIVER OTTER (LUTRA-CANADENSIS)
    SPELMAN, LH
    SUMNER, PW
    LEVINE, JF
    STOSKOPF, MK
    JOURNAL OF ZOO AND WILDLIFE MEDICINE, 1993, 24 (01) : 19 - 27
  • [30] Testing for Aleutian Mink Disease Virus in the River Otter (Lontra canadensis) in Sympatry with Infected American Mink (Neovison vison)
    Bowman, Jeff
    Kidd, Anne G.
    Nituch, Larissa A.
    Sadowski, Carrie
    Schulte-Hostedde, Albrecht I.
    JOURNAL OF WILDLIFE DISEASES, 2014, 50 (03) : 689 - 693