On the Chromosomes of the Hog-Nosed Snake, Heterodon platyrhinos Linnaeus

Edgren, Richard A.

doi:10.2307/2405575

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Common Garter Snakes, 7. sirtalis, are quite abundant on Long Point. Hognose snakes, Heterodon, although now rare in Ontario, are specialized toadeaters (Edgren 1955;Smith and White 1955). Surface (1906) reported that 75% of the diet of Pennsylvania Heterodon platyrhinos consisted of toads.…”

Section: Predationmentioning

confidence: 99%

Fowler's Toad, Bufo woodhousii fowleri, in Canada: biology and population status

Green

1989

The Canadian Field-Naturalist

View full text Add to dashboard Cite

Fowler's Toad, Bufo woodhousii fowleri, is widespread throughout the eastern United States but is restricted to sandy or rocky points and sandy beaches along the northern shore of Lake Erie (Ontario) in Canada. Beetles and ants are its major food and garter snakes its major predator. Adults are primarily nocturnal and active at between 14° and 25°C. They breed from early May to mid-June in marshy shallows adjacent to sand dunes, savannah or open forest. Clutch size is 4000 to 10 000. Tadpoles transform by the end of July. Males first breed as two-year-olds at 50 mm snout-vent length, females are older and larger at first laying. Although the species has disappeared from at least two sites at the western end of Lake Erie within the last 30 to 40 years, and is discontinuously distributed, it appears to be stable at most recorded localities and abundant at Long Point. Hybridization with the American Toad, B. americanus, is recorded widely in the United States but confirmed only at Long Point in Canada, and introgression Is insignificant there. Many areas where it occurs are within parks or other managed lands where there seem to be no immediate threats from industry or other development. However, it has disappeared from one intensively used park (Point Pelee) and an agricultural area with a heavy chemical use (Pelee Island). This toad is classified as Rare in Canada because of its restricted distribution, which makes it vulnerable to further habitat loss.

show abstract

Section: Predationmentioning

confidence: 99%

Fowler's Toad, Bufo woodhousii fowleri, in Canada: biology and population status

Green

1989

The Canadian Field-Naturalist

View full text Add to dashboard Cite

show abstract

“…The North American hognose snakes (Heterodon), while ecologically similar to most Xenodontini, are an enigmatic group phylogenetically (Cadle, 1984;Myers, 1986). Their dietary preference for anurans (Edgren, 1955;Wright and Wright, 1957;Platt, 1969), specialized feeding mechanism (Weaver, 1965;Kroll, 1976), and oral secretions (McAlister, 1963;Grenard, 1994) have all received attention. Heterodon, and particularly H. platyrhinos, is perhaps best known for its defensive display which normally includes head flattening, hooding, body inflation, mock strikes, tail display, cloacal discharging, and death feigning (see Wright and Wright, 1957;Platt, 1969;Carpenter and Ferguson, 1977;Greene, 1988).…”

Section: Introductionmentioning

confidence: 99%

Sound production in the eastern hognose snake, Heterodon platyrhinos (Serpentes: Colubridae): Does it snore?

Lalor

Young

1998

Amphib Reptilia

View full text Add to dashboard Cite

Heterodon platyrhinos normally produces sounds as one part of its elaborate defensive behavior. This species has a distinctive quadriphasic sound, reflecting the underlying triphasic ventilatory pattern of snakes. Heterodon produces sound during both inhalation and exhalation; in both cases the sounds span a broad frequency range (from approximately 1,000 to 11,000 Hz, with frequencies below 3,500 Hz having higher amplitudes. Temporal congruence between sound production and deflection of a strain gauge mounted over the external nares of unrestrained H. platyrhinos provide the first experimental evidence for sound production through the nasal passageway in snakes.

show abstract

On the Chromosomes of the Hog-Nosed Snake, Heterodon platyrhinos Linnaeus

Cited by 2 publications

References 0 publications

Fowler's Toad, Bufo woodhousii fowleri, in Canada: biology and population status

Fowler's Toad, Bufo woodhousii fowleri, in Canada: biology and population status

Sound production in the eastern hognose snake, Heterodon platyrhinos (Serpentes: Colubridae): Does it snore?

Contact Info

Product

Resources

About