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Bibliography for Morphology

Buskirk, Van, and Mccollum. “Functional Mechanisms of an Inducible Defence in Tadpoles: Morphology and Behaviour Influence Mortality Risk from Predation.” Journal of Evolutionary Biology, Blackwell Science Ltd, 25 Dec. 2001, onlinelibrary.wiley.com/doi/10.1046/j.1420-9101.2000.00173.x/full.

AmphibiaWeb. 2017. < http://amphibiaweb.org > University of California, Berkeley, CA, USA. Accessed 11 Nov 2017.

Beck, C. Oecologia (1997) 112: 187. https://doi.org/10.1007/s004420050299

Virden, T. 2003. "Hyla squirella" (On-line), Animal Diversity Web. Accessed November 11, 2017 at http://animaldiversity.org/accounts/Hyla_squirella/

“Squirrel Treefrog - Hyla Squirella.” Squirrel Treefrog - Hyla Squirella - NatureWorks, NHPBS, www.nhptv.org/natureworks/squirreltreefrog.htm.

“Squirrel Treefrog - Hyla Squirella - Details.” Encyclopedia of Life, Http://Eol.org/Pages/313534/Details, eol.org/pages/313534/details.

Buchanan, Bryant W. “Sexual Dimorphism in Hyla Squirella: Chromatic and Pattern Variation between the Sexes.” Copeia, vol. 1994, no. 3, 1994, pp. 797–802. JSTOR, JSTOR, www.jstor.org/stable/1447196.

Outline

Egg Stage

Intermediate Stage

-physical characteristics

tadpole undergoes metamorphosis within days of hatching."Tadpoles metamorphose after 40–50 d" It grows legs and the tail dissappears

"Wright (1932) noted 13 mm body length as size at metamorphosis and estimated that juveniles grow to 19–23 mm during their first year and that 2-yr-olds were > 26 mm in size."

Adult stage

-physical characteristics

1.75 inches in length

Male and female squirrel tree frogs are sexual dimorphic. The males have a larger lateral stripe than the females and have a stronger color saturation (Buchanan).

varies from green-brown-yellow. Can change collar for camoflauge. Large toe pads

"Adult body length is 22–41 mm (Wright and Wright, 1949; Martof, 1975a; Martof et al., 1980; Conant and Collins, 1991) and maximum size will reach 45 mm (Mount, 1975). Males and females are similar in size (Wright and Wright, 1949; Duellman and Schwartz, 1958)." (AmpphibiaWeb)

Rough Draft

Morphology of Hyla Squirrela

The squirrel tree frog eggs hatch into a tadpole which will begin to undergo metamorphosis within 40-50 days; the legs grow larger and the tail disappears (AmphibiaWeb). It has a light stripe running from under its eye along its jaw, and may also have a dark mark between its eyes and it may have dark spots on its body(NHPBS). At metamorphosis the frog is about 13 mm long, after a year it is up to 19 mm long, and greater than 26 mm long after their second year. An adult frog is about 1.75in or 22-41mm, and the end of their toes are large toe pads for grip (Virden). Male and female squirrel tree frogs are sexual dimorphic in color but not size. The males have a larger lateral stripe than the females and have a stronger color saturation (Buchanan). Their coloring varies from green, brown, and yellow; able to camouflage into their back ground as a defense mechanism.