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Jaramillo-Alba JL, Pérez-Mendoza HA, de la Vega-Pérez AHD, Akcali CK. Do Reproductive Costs Affect Adult Survival in Mexican Dusky Rattlesnakes? A Test Using Mark–Recapture Data. HERPETOLOGICA 2020. [DOI: 10.1655/herpetologica-d-19-00013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- José Luis Jaramillo-Alba
- Laboratorio de Ecología Evolutiva de Anfibios y Reptiles, Facultad de Estudios Superiores Iztacala, UNAM, Avenida de Los Barrios número 1, Los Reyes Iztacala, Tlalnepantla, Estado de México, C.P. 54090, México
| | - Hibraim Adán Pérez-Mendoza
- Laboratorio de Ecología Evolutiva de Anfibios y Reptiles, Facultad de Estudios Superiores Iztacala, UNAM, Avenida de Los Barrios número 1, Los Reyes Iztacala, Tlalnepantla, Estado de México, C.P. 54090, México
| | - Aníbal Helios Díaz de la Vega-Pérez
- Consejo Nacional de Ciencia y Tecnología–Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, km 1.5 Carretera Tlaxcala-Puebla, C.P. 90070, Tlaxcala, México
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King RB, Stanford KM, Jones PC. Sunning themselves in heaps, knots, and snarls: The extraordinary abundance and demography of island watersnakes. Ecol Evol 2018; 8:7500-7521. [PMID: 30151166 PMCID: PMC6106160 DOI: 10.1002/ece3.4191] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 04/03/2018] [Accepted: 04/22/2018] [Indexed: 11/15/2022] Open
Abstract
Snakes represent a sizable fraction of vertebrate biodiversity, but until recently, data on their demography have been sparse. Consequently, generalizations regarding patterns of variation are weak and the potential for population projections is limited. We address this information gap through an analysis of spatial and temporal variation in demography (population size, annual survival, and realized population growth) of the Lake Erie Watersnake, Nerodia sipedon insularum, and a review of snake survival more generally. Our study spans a period during which the Lake Erie Watersnake was listed as threatened under the U.S. Endangered Species Act, recovered, and was delisted. We collected capture-mark-recapture data at 14 study sites over 20 years, accruing 20,000 captures of 13,800 individually marked adults. Lake Erie Watersnakes achieve extraordinary abundance, averaging 520 adults per km of shoreline (ca. 260 adult per ha) at our study sites (range = 160-1,600 adults per km; ca. 80-800 adults per ha) and surpassing population recovery and postdelisting monitoring criteria. Annual survival averages 0.68 among adult females and 0.76 among adult males, varies among sites, and is positively correlated with body size among study sites. Temporal process variance in annual survival is low, averaging 0.0011 or less than 4% of total variance; thus, stochasticity in annual survival may be of minor significance to snake extinction risk. Estimates of realized population growth indicate that population size has been stable or increasing over the course of our study. More generally, snake annual survival overlaps broadly across continents, climate zones, families, subfamilies, reproductive modes, body size categories, maturation categories, and parity categories. Differences in survival in relation to size, parity, and maturation are in the directions predicted by life history theory but are of small magnitude with much variation around median values. Overall, annual survival appears to be quite plastic, varying with food availability, habitat quality, and other ecological variables.
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Affiliation(s)
- Richard B. King
- Department of Biological SciencesNorthern Illinois UniversityDeKalbIllinois
- Institute for the Study of the Environment, Sustainability and EnergyNorthern Illinois UniversityDeKalbIllinois
| | | | - Peter C. Jones
- Department of Biological SciencesNorthern Illinois UniversityDeKalbIllinois
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Hileman ET, King RB, Adamski JM, Anton TG, Bailey RL, Baker SJ, Bieser ND, Bell TA, Bissell KM, Bradke DR, Campa H, Casper GS, Cedar K, Cross MD, DeGregorio BA, Dreslik MJ, Faust LJ, Harvey DS, Hay RW, Jellen BC, Johnson BD, Johnson G, Kiel BD, Kingsbury BA, Kowalski MJ, Lee YM, Lentini AM, Marshall JC, Mauger D, Moore JA, Paloski RA, Phillips CA, Pratt PD, Preney T, Prior KA, Promaine A, Redmer M, Reinert HK, Rouse JD, Shoemaker KT, Sutton S, VanDeWalle TJ, Weatherhead PJ, Wynn D, Yagi A. Climatic and geographic predictors of life history variation in Eastern Massasauga (Sistrurus catenatus): A range-wide synthesis. PLoS One 2017; 12:e0172011. [PMID: 28196149 PMCID: PMC5308788 DOI: 10.1371/journal.pone.0172011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Accepted: 01/30/2017] [Indexed: 11/18/2022] Open
Abstract
Elucidating how life history traits vary geographically is important to understanding variation in population dynamics. Because many aspects of ectotherm life history are climate-dependent, geographic variation in climate is expected to have a large impact on population dynamics through effects on annual survival, body size, growth rate, age at first reproduction, size-fecundity relationship, and reproductive frequency. The Eastern Massasauga (Sistrurus catenatus) is a small, imperiled North American rattlesnake with a distribution centered on the Great Lakes region, where lake effects strongly influence local conditions. To address Eastern Massasauga life history data gaps, we compiled data from 47 study sites representing 38 counties across the range. We used multimodel inference and general linear models with geographic coordinates and annual climate normals as explanatory variables to clarify patterns of variation in life history traits. We found strong evidence for geographic variation in six of nine life history variables. Adult female snout-vent length and neonate mass increased with increasing mean annual precipitation. Litter size decreased with increasing mean temperature, and the size-fecundity relationship and growth prior to first hibernation both increased with increasing latitude. The proportion of gravid females also increased with increasing latitude, but this relationship may be the result of geographically varying detection bias. Our results provide insights into ectotherm life history variation and fill critical data gaps, which will inform Eastern Massasauga conservation efforts by improving biological realism for models of population viability and climate change.
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Affiliation(s)
- Eric T. Hileman
- Department of Biological Sciences, Northern Illinois University, DeKalb, Illinois, United States of America
| | - Richard B. King
- Department of Biological Sciences, Northern Illinois University, DeKalb, Illinois, United States of America
| | - John M. Adamski
- Seneca Park Zoo, Rochester, New York, United States of America
| | - Thomas G. Anton
- Department of Zoology, The Field Museum, Chicago, Illinois, United States of America
| | - Robyn L. Bailey
- Cornell Lab of Ornithology, Cornell University, Ithaca, New York, United States of America
| | - Sarah J. Baker
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana, Champaign, Champaign, Illinois, United States of America
| | - Nickolas D. Bieser
- Department of Biology, Indiana University-Purdue University Fort Wayne, Fort Wayne, Indiana, United States of America
| | - Thomas A. Bell
- New York State Department of Environmental Conservation, Albany, New York, United States of America
| | - Kristin M. Bissell
- Michigan Department of Natural Resources, Wildlife Division, Grass Lake, Michigan, United States of America
| | - Danielle R. Bradke
- Department of Biology, Grand Valley State University, Allendale, Michigan, United States of America
| | - Henry Campa
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, Michigan, United States of America
| | - Gary S. Casper
- University of Wisconsin, Milwaukee, Field Station, Saukville, Wisconsin, United States of America
| | - Karen Cedar
- Ojibway Nature Centre, City of Windsor, Windsor, Ontario, Canada
| | - Matthew D. Cross
- Department of Biological Sciences, Bowling Green State University, Bowling Green, Ohio, United States of America
| | - Brett A. DeGregorio
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, Illinois, United States of America
| | - Michael J. Dreslik
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana, Champaign, Champaign, Illinois, United States of America
| | - Lisa J. Faust
- Alexander Center for Applied Population Biology, Lincoln Park Zoo, Chicago, Illinois, United States of America
| | - Daniel S. Harvey
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, Illinois, United States of America
| | - Robert W. Hay
- Turtles for Tomorrow, Madison, Wisconsin, United States of America
| | - Benjamin C. Jellen
- Urban Chestnut Brewing Company, St. Louis, Missouri, United States of America
| | - Brent D. Johnson
- Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, Syracuse, New York, United States of America
| | - Glenn Johnson
- Department of Biology, State University of New York Potsdam, Potsdam, New York, United States of America
| | - Brooke D. Kiel
- Department of Biology, Grand Valley State University, Allendale, Michigan, United States of America
| | - Bruce A. Kingsbury
- Department of Biology, Indiana University-Purdue University Fort Wayne, Fort Wayne, Indiana, United States of America
| | | | - Yu Man Lee
- Michigan Natural Features Inventory, Michigan State University Extension, Lansing, Michigan, United States of America
| | | | - John C. Marshall
- Department of Biology, Indiana University-Purdue University Fort Wayne, Fort Wayne, Indiana, United States of America
| | - David Mauger
- Forest Preserve District of Lake County, Libertyville, Illinois, United States of America
| | - Jennifer A. Moore
- Department of Biology, Grand Valley State University, Allendale, Michigan, United States of America
| | - Rori A. Paloski
- Bureau of Natural Heritage Conservation, Wisconsin Department of Natural Resources, Madison, Wisconsin, United States of America
| | - Christopher A. Phillips
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana, Champaign, Champaign, Illinois, United States of America
| | - Paul D. Pratt
- Ojibway Nature Centre, City of Windsor, Windsor, Ontario, Canada
| | - Thomas Preney
- Ojibway Nature Centre, City of Windsor, Windsor, Ontario, Canada
| | | | | | - Michael Redmer
- United States Fish & Wildlife Service, Chicago, Illinois, United States of America
| | - Howard K. Reinert
- Department of Biology, The College of New Jersey, Ewing, New Jersey, United States of America
| | - Jeremy D. Rouse
- Ontario Ministry of Natural Resources, Parry Sound, Ontario, Canada
| | - Kevin T. Shoemaker
- Department of Natural Resources and Environmental Science, University of Nevada, Reno, Nevada, United States of America
| | | | - Terry J. VanDeWalle
- Stantec Consulting Services Inc, Independence, Iowa, United States of America
| | - Patrick J. Weatherhead
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, Illinois, United States of America
| | - Doug Wynn
- Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, Ohio, United States of America
| | - Anne Yagi
- Ministry of Natural Resources, Vineland Station, Ontario, Canada
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