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Amphibian Identification Guide
Amphibian Migrations & Road Crossings Amphibian Identification Guide The NYSDEC Hudson River Estuary Program and Cornell University are working with communities to conserve forests, woodland pools, and the wildlife that depend on these critical habitats. This guide is designed to help volunteers of the Amphibian Migrations & Road Crossings Project identify species they observe during spring migrations, when many salamanders and frogs move from forest habitat to woodland pools for breeding. For more information about the project, visit http://www.dec.ny.gov/lands/51925.html. spotted salamander* (Ambystoma maculatum) Black to dark gray body with two rows of yellow spots. Widespread distribution in the Hudson Valley. Total length 5.0-8.0 in. Jefferson/blue-spotted salamander complex* (Ambystoma jeffersonianum x laterale) Brown to grayish black with blue-silver flecking. Less common. Note: Hybridization between Jefferson and blue-spotted salamander has created very variable appearances and individuals may have features of both species. Because even experts have difficulty distinguishing these two species in the field, we consider any sightings to be the ‘complex.’ Total length 3.0-7.5 in. marbled salamander* (Ambystoma opacum) Black or grayish-black body with white or gray crossbars along length of body. Stout body with wide head. Less common. (Breeds in the fall.) Total length 3.5-5.0 in. *Woodland pool breeding species. 0 inches 1 2 3 4 5 6 7 Amphibian Migrations & Road Crossings: Amphibian Identification Guide Page 2 of 4 eastern newt (Notophthalmus viridescens) Terrestrial “red eft” stage of newt (above) is reddish-orange with two rows of reddish spots with black borders. -
Blue–Spotted Salamander Ambystoma Laterale Status: Wisconsin – Common Minnesota – Common Iowa – Endangered
Species Descriptions Blue–spotted Salamander Ambystoma laterale Status: Wisconsin – Common Minnesota – Common Iowa – Endangered 1 cm Size at hatching, 8 – 10 mm total length; at metamorphosis, ~ 34 mm snout–vent length The Blue-spotted Salamander is one of four mole salamanders in our region. Other mole salamanders include the Spotted, Small-mouthed, and Tiger Salamanders. As adults, mole salamanders live under cover objects such as rotting logs or in burrows in the forest floor (Parmelee 1993). In early spring (March and April), adults migrate to temporary ponds to breed. Larvae develop during spring and summer and usually metamorphose in the fall. The Blue-spotted Salamander is a woodland species of northern North America. The eggs are laid in small clumps (7–40 eggs) attached to vegetation or debris at the bottom of ponds. The larvae are similar to Spotted Salamanders but are more darkly colored with the fins mottled with black, and dark blotches on the dorsum. Blue-spotted Salamanders metamorphose at about the same size as Spotted Salamanders but are darker, sometimes with flecks of blue. 14 15 Spotted Salamander Ambystoma maculatum Status: Wisconsin – Locally abundant Minnesota – Status to be determined 1 cm Size at hatching, 12 – 17 mm; at metamorphosis, 49 – 60 mm total length The Spotted Salamander is present only in the northeastern part of our range (where it is sympatric with up to two other mole salamanders). Females deposit eggs in a firm oval mass (60–100 mm in diameter) attached to vegetation near the surface of the water. The eggs (1–250 per mass) are black, but the egg mass may be clear or milky, with a greenish hue because of symbiotic algae. -
Spotted Salamander (Ambystoma Maculafum)
Spotted Salamander (Ambystoma maculafum) RANGE: Nova Scotia and the Gaspe Peninsula to s. On- BREEDINGPERIOD: March to mid-April. Mass breeding tario, s. through Wisconsin, s. Illinois excluding prairie migrations occur in this species: individuals enter and regions, toe. Kansas andTexas, and through the Eastern leave breeding ponds using the same track each year, United States, except Florida, the Delmarva Peninsula, and exhibit fidelity to breeding ponds (Shoop 1956, and s. New Jersey. 1974). Individuals may not breed in consecutive years (Husting 1965). Breeding migrations occur during RELATIVE ABUNDANCEIN NEW ENGLAND:Common steady evening rainstorms. though populations declining, probably due to acid pre- cipitation. EGG DEPOSITION:1 to 6 days after first appearance of adults at ponds (Bishop 1941 : 114). HABITAT:Fossorial; found in moist woods, steambanks, beneath stones, logs, boards. Prefers deciduous or NO. EGGS/MASS:100 to 200 eggs, average of 125, laid in mixed woods on rocky hillsides and shallow woodland large masses of jelly, sometimes milky, attached to stems ponds or marshy pools that hold water through the sum- about 15 cm (6 inches) under water. Each female lays 1 to mer for breeding. Usually does not inhabit ponds con- 10 masses (average of 2 to 3) of eggs (Wright and Allen taining fish (Anderson 1967a). Terrestrial hibernator. In 1909).Woodward (1982)reported that females breeding summer often wanders far from water source. Found in in permanent ponds produced smaller, more numerous low oak-hickory forests with creeks and nearby swamps eggs than females using temporary ponds. in Illinois (Cagle 1942, cited in Smith 1961 :30). -
Red-Spotted Newt Fact Sheet
WILDLIFE IN CONNECTICUT WILDLIFE FACT SHEET DENNIS QUINN Eastern Red-spotted Newt Notophthalmus v. viridescens Background and Range The red-spotted newt (also commonly referred to as the eastern newt) is widespread and familiar in many areas of Connecticut. Newts have four distinct life stages: egg, aquatic larvae, terrestrial juvenial (or “eft”), and aquatic adult. Their life cycle is one of the most complex of all the salamanders; starting as an egg, hatching into a larvae with external gills, then migrating to terrestrial habitats as juveniles where gills are replaced with lungs, and returning a few years later to their aquatic habitats as adults which retain their lungs. In Connecticut, the newt is found statewide, but more prominently west of the Connecticut River. The red-spotted newt has many subspecies and an extensive range throughout the United States. Description The adult red-spotted newt has smooth skin that is overall greenish in color, with small black dots scattered on the back and a row of several black-bordered reddish-orange spots on each side of the back. Male newts have black rough patches on the inside of their thighs and on the bottom tip of their hind toes during the breeding season. Adult newts are usually 3 to 5 inches in length. The juvenile, or eft, stage of the red-spotted newt is bright orange in color with small black dots scattered on the back and a row of larger, black-bordered orange spots on each side of the back. The skin is rough and dry compared to the moist and smooth skin of adults and larvae. -
Heterotrophic Carbon Fixation in a Salamander-Alga Symbiosis
bioRxiv preprint doi: https://doi.org/10.1101/2020.02.14.948299; this version posted February 18, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. Heterotrophic Carbon Fixation in a Salamander-Alga Symbiosis. John A. Burns1,2, Ryan Kerney3, Solange Duhamel1,4 1Lamont-Doherty Earth Observatory of Columbia University, Division of Biology and Paleo Environment, Palisades, NY 2Bigelow Laboratory for Ocean Sciences, East Boothbay, ME 3Gettysburg College, Biology, Gettysburg, PA 4University of Arizona, Department of Molecular and Cellular Biology, Tucson, AZ Abstract The unique symbiosis between a vertebrate salamander, Ambystoma maculatum, and unicellular green alga, Oophila amblystomatis, involves multiple modes of interaction. These include an ectosymbiotic interaction where the alga colonizes the egg capsule, and an intracellular interaction where the alga enters tissues and cells of the salamander. One common interaction in mutualist photosymbioses is the transfer of photosynthate from the algal symbiont to the host animal. In the A. maculatum-O. amblystomatis interaction, there is conflicting evidence regarding whether the algae in the egg capsule transfer chemical energy captured during photosynthesis to the developing salamander embryo. In experiments where we took care to separate the carbon fixation contributions of the salamander embryo and algal symbionts, we show that inorganic carbon fixed by A. maculatum embryos reaches 2% of the inorganic carbon fixed by O. amblystomatis algae within an egg capsule after 2 hours in the light. -
The Origins of Chordate Larvae Donald I Williamson* Marine Biology, University of Liverpool, Liverpool L69 7ZB, United Kingdom
lopmen ve ta e l B Williamson, Cell Dev Biol 2012, 1:1 D io & l l o l g DOI: 10.4172/2168-9296.1000101 e y C Cell & Developmental Biology ISSN: 2168-9296 Research Article Open Access The Origins of Chordate Larvae Donald I Williamson* Marine Biology, University of Liverpool, Liverpool L69 7ZB, United Kingdom Abstract The larval transfer hypothesis states that larvae originated as adults in other taxa and their genomes were transferred by hybridization. It contests the view that larvae and corresponding adults evolved from common ancestors. The present paper reviews the life histories of chordates, and it interprets them in terms of the larval transfer hypothesis. It is the first paper to apply the hypothesis to craniates. I claim that the larvae of tunicates were acquired from adult larvaceans, the larvae of lampreys from adult cephalochordates, the larvae of lungfishes from adult craniate tadpoles, and the larvae of ray-finned fishes from other ray-finned fishes in different families. The occurrence of larvae in some fishes and their absence in others is correlated with reproductive behavior. Adult amphibians evolved from adult fishes, but larval amphibians did not evolve from either adult or larval fishes. I submit that [1] early amphibians had no larvae and that several families of urodeles and one subfamily of anurans have retained direct development, [2] the tadpole larvae of anurans and urodeles were acquired separately from different Mesozoic adult tadpoles, and [3] the post-tadpole larvae of salamanders were acquired from adults of other urodeles. Reptiles, birds and mammals probably evolved from amphibians that never acquired larvae. -
Amphibiaweb's Illustrated Amphibians of the Earth
AmphibiaWeb's Illustrated Amphibians of the Earth Created and Illustrated by the 2020-2021 AmphibiaWeb URAP Team: Alice Drozd, Arjun Mehta, Ash Reining, Kira Wiesinger, and Ann T. Chang This introduction to amphibians was written by University of California, Berkeley AmphibiaWeb Undergraduate Research Apprentices for people who love amphibians. Thank you to the many AmphibiaWeb apprentices over the last 21 years for their efforts. Edited by members of the AmphibiaWeb Steering Committee CC BY-NC-SA 2 Dedicated in loving memory of David B. Wake Founding Director of AmphibiaWeb (8 June 1936 - 29 April 2021) Dave Wake was a dedicated amphibian biologist who mentored and educated countless people. With the launch of AmphibiaWeb in 2000, Dave sought to bring the conservation science and basic fact-based biology of all amphibians to a single place where everyone could access the information freely. Until his last day, David remained a tirelessly dedicated scientist and ally of the amphibians of the world. 3 Table of Contents What are Amphibians? Their Characteristics ...................................................................................... 7 Orders of Amphibians.................................................................................... 7 Where are Amphibians? Where are Amphibians? ............................................................................... 9 What are Bioregions? ..................................................................................10 Conservation of Amphibians Why Save Amphibians? ............................................................................. -
Chemical Defense of the Eastern Newt (Notophthalmus Viridescens): Variation in Efficiency Against Different Consumers and in Different Habitats
Chemical Defense of the Eastern Newt (Notophthalmus viridescens): Variation in Efficiency against Different Consumers and in Different Habitats Zachary H. Marion1,2, Mark E. Hay1* 1 School of Biology, Georgia Institute of Technology, Atlanta, Georgia, United States of America, 2 Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee, United States of America Abstract Amphibian secondary metabolites are well known chemically, but their ecological functions are poorly understood—even for well-studied species. For example, the eastern newt (Notophthalmus viridescens) is a well known secretor of tetrodotoxin (TTX), with this compound hypothesized to facilitate this salamander’s coexistence with a variety of aquatic consumers across the eastern United States. However, this assumption of chemical defense is primarily based on observational data with low replication against only a few predator types. Therefore, we tested the hypothesis that N. viridescens is chemically defended against co-occurring fishes, invertebrates, and amphibian generalist predators and that this defense confers high survivorship when newts are transplanted into both fish-containing and fishless habitats. We found that adult eastern newts were unpalatable to predatory fishes (Micropterus salmoides, Lepomis macrochirus) and a crayfish (Procambarus clarkii), but were readily consumed by bullfrogs (Lithobates catesbeianus). The eggs and neonate larvae were also unpalatable to fish (L. macrochirus). Bioassay-guided fractionation confirmed that deterrence is chemical and that ecologically relevant concentrations of TTX would deter feeding. Despite predatory fishes rejecting eastern newts in laboratory assays, field experiments demonstrated that tethered newts suffered high rates of predation in fish-containing ponds. We suggest that this may be due to predation by amphibians (frogs) and reptiles (turtles) that co-occur with fishes rather than from fishes directly. -
The Herpetology of Erie County, Pennsylvania: a Bibliography
The Herpetology of Erie County, Pennsylvania: A Bibliography Revised 2 nd Edition Brian S. Gray and Mark Lethaby Special Publication of the Natural History Museum at the Tom Ridge Environmental Center, Number 1 2 Special Publication of the Natural History Museum at the Tom Ridge Environmental Center The Herpetology of Erie County, Pennsylvania: A Bibliography Revised 2 nd Edition Compiled by Brian S. Gray [email protected] and Mark Lethaby Natural History Museum at the Tom Ridge Environmental Center, 301 Peninsula Dr., Suite 3, Erie, PA 16505 [email protected] Number 1 Erie, Pennsylvania 2017 Cover image: Smooth Greensnake, Opheodrys vernalis from Erie County, Pennsylvania. 3 Introduction Since the first edition of The herpetology of Erie County, Pennsylvania: a bibliography (Gray and Lethaby 2012), numerous articles and books have been published that are pertinent to the literature of the region’s amphibians and reptiles. The purpose of this revision is to provide a comprehensive and updated list of publications for use by researchers interested in Erie County’s herpetofauna. We have made every effort to include all major works on the herpetology of Erie County. Included are the works of Atkinson (1901) and Surface (1906; 1908; 1913) which are among the earliest to note amphibians and or reptiles specifically from sites in Erie County, Pennsylvania. The earliest publication to utilize an Erie County specimen, however, may have been that of LeSueur (1817) in his description of Graptemys geographica (Lindeman 2009). While the bibliography is quite extensive, we did not attempt to list everything, such as articles in local newspapers, and unpublished reports, although some of the more significant of these are included. -
Successful Reproduction of the Mole Salamander Ambystoma Talpoideum in Captivity, with an Emphasis on Stimuli Environmental Determinants
SHORT NOTE The Herpetological Bulletin 141, 2017: 28-31 Successful reproduction of the mole salamander Ambystoma talpoideum in captivity, with an emphasis on stimuli environmental determinants AXEL HERNANDEZ Department of Environmental Sciences, Faculty of Sciences and Technics, University Pasquale Paoli of Corsica, Corte, 20250, France Author Email: [email protected] ABSTRACT - Generating and promoting evidence-based husbandry protocols for urodeles, commonly known as newts and salamanders, is urgently needed because most of the up-to-date ex situ programs are focused on frogs and toads than Urodela. Data on biology, life history, ecology and environmental parameters are lacking for many species and are needed to establish suitable husbandry and breeding conditions in captive environments. Two adult females and two adult males, of the mole salamander Ambystoma talpoideum successfully reproduced in captivity. It was found that reproduction of this species depends on various complex stimuli: including natural photoperiod 12:12, rainwater (acidic to neutral pH) and an aquarium full of various debris. Additionally high temperature variations ranging from 2 °C to 17 °C (a decrease followed by an increase) between November and February showed that it is possible to breed adults in aquariums provided the right stimuli are applied at the right moment of time in winter. A. talpoideum shows an explosive breeding mode as previously reported for the whole genus Ambystoma. INTRODUCTION with an emphasis on the environmental determinant stimuli involved. These data may assist in improving breeding these ince the 1980s, the current global amphibian extinction salamanders under artificial conditions. crisis has been discussed and acknowledged (Wake, A. -
Northern Spring Salamander Fact Sheet
WILDLIFE IN CONNECTICUT STATE THREATENED SPECIES © COURTESY D. QUINN © COURTESY Northern Spring Salamander Gyrinophilus p. porphyriticus Background and Range The northern spring salamander is a brightly-colored member of the lungless salamander family (Plethodontidae). True to its name, it resides in cool water springs and streams, making it an excellent indicator of a clean, well- oxygenated water source. Due to its strict habitat and clean water requirements, it is only found in a handful of locations within Connecticut. The Central Connecticut Lowlands divide this amphibian's range into distinct populations. Litchfield and Hartford Counties support the greatest populations of spring salamanders. This salamander is listed as a threatened species in Connecticut. In North America, the spring salamander occurs from extreme southeastern Canada south through New England, west to Ohio, and south down the Appalachians as far as northern Georgia and Alabama. Description This large, robust salamander ranges in color from salmon to reddish-brown to purplish-brown, with a translucent white underbelly. The snout appears “square” when viewed from above and the salamander has well-defined grooves near its eyes to its snout. The tail is laterally flattened with a fin-like tip. Young spring salamanders are lighter in color and have small gills. Their coloration does not have deeper reddish tints until adulthood. Total length ranges from 5 to 7.5 inches. Habitat and Diet Spring salamanders require very clean, cool, and well-oxygenated water. They can be found in streams, brooks, and seepage areas. Preferred habitat lies within steep, rocky hemlock forests. This species is intolerant to disturbances. -
Snakes of the Everglades Agricultural Area1 Michelle L
CIR1462 Snakes of the Everglades Agricultural Area1 Michelle L. Casler, Elise V. Pearlstine, Frank J. Mazzotti, and Kenneth L. Krysko2 Background snakes are often escapees or are released deliberately and illegally by owners who can no longer care for them. Snakes are members of the vertebrate order Squamata However, there has been no documentation of these snakes (suborder Serpentes) and are most closely related to lizards breeding in the EAA (Tennant 1997). (suborder Sauria). All snakes are legless and have elongated trunks. They can be found in a variety of habitats and are able to climb trees; swim through streams, lakes, or oceans; Benefits of Snakes and move across sand or through leaf litter in a forest. Snakes are an important part of the environment and play Often secretive, they rely on scent rather than vision for a role in keeping the balance of nature. They aid in the social and predatory behaviors. A snake’s skull is highly control of rodents and invertebrates. Also, some snakes modified and has a great degree of flexibility, called cranial prey on other snakes. The Florida kingsnake (Lampropeltis kinesis, that allows it to swallow prey much larger than its getula floridana), for example, prefers snakes as prey and head. will even eat venomous species. Snakes also provide a food source for other animals such as birds and alligators. Of the 45 snake species (70 subspecies) that occur through- out Florida, 23 may be found in the Everglades Agricultural Snake Conservation Area (EAA). Of the 23, only four are venomous. The venomous species that may occur in the EAA are the coral Loss of habitat is the most significant problem facing many snake (Micrurus fulvius fulvius), Florida cottonmouth wildlife species in Florida, snakes included.