PRIMITIVE FISHES | Living Fossils and Their Ancestors

Time 2020-12-12 06:02:56

Web Name: PRIMITIVE FISHES | Living Fossils and Their Ancestors

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TPWD has proposed new rule changes that affect the size and method of how Alligator Gar can be harvested. These rule changes, if put into law, would include a maximum size limit of four feet in length for Alligator Gar from the Trinity River between the I-30 Bridge in Dallas County to the I-10 Bridge in Chambers County. Additionally, bowfishing would be limited to only daylight hours statewide.Current Texas law allows the harvest of one Alligator Gar per day per person. Based on scientific data, feedback from a recent survey conducted by TPWD, and the growing popularity of the bowfishing sport,the Texas trophy fishery for Alligator Gar may be at risk.Please sign the petition and show your support to help protect Texas Alligator Gar for future generations; we also appreciate your sharing this petition to garner additional support!Live fast, die young OR live four centuries??!! The latest from The Fisheries Blog with artwork by Hannah Dean!The Fisheries BlogBy Abigail Lynch Artwork by The Fisheries Blog Artist, Hannah Dean. Fish are the most diverse group of vertebrates on earth – almost 28,000 species — more than half of all living vertebrate species.  So, perhaps, it isn’t surprising that fish have the record for both the shortest and longest vertebrate lifespan.  While a pet Goldfish (Carassius auratus) has a typical lifespan of 6-7 years, they have been reported to live as long as 30 years (Lorenzoni et al. 2007).  Still your average aquarium fish cannot compare to these short-lived and long-lived species!Shortest-livedThe record for shortest recorded vertebrate lifespan goes to the Coral Reef Pygmy Goby (Eviota sigillata).  This little Indo-West Pacific reef fish, less than an inch long, has a lifetime which isn’t much longer.  It spends three weeks as larvae, quickly metamorphoses within one to two weeks, and settles…View original post 438 more words We had the privilege of writing a guest post on gars for the FINtastic Fisheries Blog; and check out the awesome GARtwork by Hannah Dean!The Fisheries Blog“As useless and destructive in our productive waters as wolves and foxes formerly were in our pastures and poultry yards”~Forbes Richardson, 1920 The 7 gar (Lepisosteidae) species of the world. Find prints of this Gartwork at Hannah Dean‘s website. “Overall, they look less like a fish than a medieval dart”~Lawrence Payne, 2016“They’re like an alligator with fins instead of legs”~Solomon David, describing a gar to just about anyone.With descriptions like these, is it any surprise that gars (Lepisosteidae) aren’t the most popular fishes “in the sea?” Did I mention they’re armored with enamel-like scales and have jaws full of sharp teeth…and they can breathe air? What’s not to like?While basic gar morphology hasn’t changed much since the Cretaceous period, our perceptions of gars have started to evolve over the past few decades. These once-hated fish are garnering an improved…View original post 801 more wordsShare this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Like this:Like Loading... 10:00 AMMorphological Variation Among Bowfin (Amia) Populations from the Carolinas and Laurentian Great Lakes: Taxonomic and Conservation Implications Jay Palumbo1, Kean Clifford1 and Donald Stewart2, (1)SUNY Coll. Envir. Sci. For., Syracuse, NY 13210, USA, (2)SUNY College of Environmental Science and Forestry10:20 AMSuccess of Morphometric Gender Identification of Alligator Gar Dusty McDonald1, Daniel Daugherty2 and J. Warren Schlechte2, (1)Perry R. Bass Marine Fisheries Research Station, (2)Heart of the Hills Fisheries Science CenterAlligator Gar in the Headlines: Ancient Sport Fish Asian Carp? Jeffrey Stein1, Solomon David2 and Sarah Huck1, (1)University of Illinois, (2) Shedd Aquarium/U.S. Geological Survey11:00 AMBowfin Acoustic Telemetry: Insight into the Ecology of a Living FossilJonathan Midwood, Lee Gutowsky, Bogdan Hlevca, Mathew Wells, Susan Doka and Steven Cooke. affiliations list forthcoming.11:20 AMConnecting the Spots: Life History and Ecology of the Spotted Gar Lepisosteus Oculatus from an Oklahoma Reservoir Bryan Frenette, Kansas State University and Richard Snow, Oklahoma Department of Wildlife Conservation01:00 PMDevelopment of a Stage-Specific Floodplain Inundation Model to Predict Suitable Spawning Habitat Availability for Assessing Alligator Gar Recruitment Success Clint Robertson1, Karim Aziz1, Nolan Raphelt2, Dave Buckmeier1 and Nate Smith1, (1)Texas Parks and Wildlife Department, (2)Texas Water Development Board01:20 PMAlligator Gar in Texas Coastal Zone: Long-Term Trends and Environmental Influences Daniel Daugherty, Texas Parks and Wildlife Department, J. Warren Schlechte, Heart of the Hills Fisheries Science Center and Dusty McDonald, Perry R. Bass Marine Fisheries Research Station01:40 PMMovement Patterns and Home Range Fidelity of Bowfin in Oneida Lake, New York James R. Jackson, Cornell Biological Field Station, Cornell University, Alexander W. Latzka, McGill University, Tomomi Landsman, Léman Manhattan Preparatory School and Amy R. McCune, Cornell University02:00 PMGrowth and Ecology of Bowfin (Amia calva) in Green Bay, Lake Michigan Collin Moratz1, Patrick Forsythe1, Christopher Houghton1, Gary Lamberti2, Katherine O Reilly2, Donald Uzarski3, James Student3 and Martin Berg4, (1)University of Wisconsin Green Bay, (2)University of Notre Dame, (3)Central Michigan University, (4)Loyola University Chicago02:20 PMUtility and Precision of Four Hard Structures Used to Estimate Age of Spotted, Shortnose, and Longnose Gars Sarah Huck1, Solomon David2 and Jeffrey Stein1, (1)University of Illinois, (2) Shedd Aquarium/U.S. Geological Survey02:40 PMJuvenile Alligator Gar Movement Patterns in a Disconnected Floodplain Habitat in Southeast Missouri Levi Solomon1, Quinton Phelps2, Dave Herzog3, Christopher Kennedy3 and Michael Taylor4, (1)University of Illinois, Prairie Research Institute, Illinois Natural History Survey, Illinois River Biological Station, (2)Missouri Department of Conservation and Southeast Missouri State University, (3)Missouri Department of Conservation, (4)Southeast Missouri State University03:20 PMAccuracy and precision of Longnose and Spotted Gar age estimates from otoliths, pectoral fin rays, and branchiostegal raysDavid Buckmeier1, Richard Snow2, Nathan Smith1, and Clayton Porter2 , (1)Texas Parks and Wildlife Department, (2) Oklahoma Department of Wildlife ConservationModeling the Responses of Alligator Gar Populations to Harvest: Implications for Meeting the Needs of a Diverse Angling Constituency Nathan Smith1, Daniel Daugherty2, J. Warren Schlechte2 and David Buckmeier1, (1)Texas Parks and Wildlife Department, (2)Heart of the Hills Fisheries Science Center We are planning a new symposium focusing on the ecology, conservation, and management of Holostean Fishes (Gars and Bowfin) for the 2016 American Fisheries Society conference in Kansas City, Missouri! Please share with those who may be interested, and see contact info below if you have questions/comments. More information coming soon!Angling for Dinosaurs: Status and Future Study of the Ecology, Conservation and Management of Ancient FishesA special symposium is planned for the 146th annual meeting of the American Fisheries Society in Kansas City, Missouri in August 2016.  This symposium will focus on the biology, ecology, life history, conservation and management of Holostean Fishes (Bowfin and gar species). As anglers’ perceptions of these ancient fishes begin to transform from “rough fish” to “sport fish,” the need for a better understanding of the ecology and conservation status of these species is fundamental to effective management. We intend to highlight past and current research by including presentations related to:Biology/ecology/life historyAge and growth evaluationsPopulation genetics evolutionary perspectivesSampling methodologiesManagement evaluationsHybridizationHuman dimensionsIf you manage or are conducting research related to Holostean fisheries, please consider participating in this special symposium. The organizers are planning some type of proceedings or special journal issue where presenters can publish their work if they wish, but the final decision will be based on input from participants.  If you have information you’d like to share that would advance our understanding of Ancient Fishes, please contact the organizers for more information.The organizers are also seeking potential sponsors for this event.  If you or your organization is interested in sponsoring the symposium, please contact the organizers.Organizers:Dr. Solomon R. David1,3, Sarah Huck2,4, Dr. Jeffrey A. Stein2,41Shedd Aquarium2Illinois Natural History Survey3U.S. Geological Survey Great Lakes Science Center4University of IllinoisPDF of announcement: AFS 2016 Gar Bowfin Symposium Announcement FINALFollow @PrimitiveFishes @SFEL_Stein for more updates and information!Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Like this:Like Loading... Photo Credit: Matt Nager/Outdoor Life MagazineWe will comment further soon, but in short, Outdoor Life Magazine has posted a recent article on a bowfishing tournament. The story exemplifies a continuing systemic problem of wasteful killing and eradication of native species such as gar, buffalo, and bowfin. Using bowfishing to remove invasive carps is one thing, or if bowfishers are eating the native fishes they shoot (there s no catch-and-release in bowfishing), more power to them. But wasteful killing of native species, often top predators and important components of native food webs and ecosystems, is unnecessary and unacceptable. Take a look at all the photos; if these were piles of dead bass, trout, walleye or muskie, there would be an outrage. Not the same for gar, bowfin, and suckers.It s unfortunately legal (and often encouraged) in many areas, as there is money to be made. If you d like to see a change, please contact your state s Department of Natural Resources, Fish Wildlife Office, and/or other conservation agencies. More to come.Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Like this:Like Loading... WARNING: GRAPHIC (but educational) A throwback to our research on Spotted Gar (Lepisosteus oculatus) ecology in 2011, here s an impromptu video on sex determination of the species.In order to better understand species population and life history characteristics (and inform conservation and management), we need to know its size and age structure, as well as variation of that structure between males and females. In general, the sex of gars cannot be determined externally, therefore a population sample is dissected for internal examination. We used other structures of the fish (otoliths, rays, bones, etc) for additional analyses.references:Ferrara Irwin 2001A Standardized Procedure for Internal Sex Identification in Lepisosteidaehttp://bit.ly/1AhB4EtDavid 2012Life history, growth, and genetic diversity of the spotted gar (Lepisosteus oculatus) from peripheral and core populationshttp://bit.ly/1DdgomLShare this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Like this:Like Loading... Privacy Cookies: This site uses cookies. By continuing to use this website, you agree to their use. To find out more, including how to control cookies, see here: Cookie Policy

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