PREMATING ISOLATION IN THE <i>HYLA EWINGI</i>
 COMPLEX (ANURA: HYLIDAE)

Littlejohn, M. J.

doi:10.1111/j.1558-5646.1965.tb01709.x

Cited by 85 publications

(42 citation statements)

References 23 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reinforcement of ethological barriers in areas of sympatry has been described in Microhyla (Blair, 1955), Pseudacris (Mecham, 1961), Hyla (Littlejohn, 1965), and Drosophila (Dobzhansky and Koller, 1938;Dobzhansky, 1951;Dobzhansky et al, 1957;Dobzhansky et al, 1964;Ehrman, 1965), Erebia (Lorkovid, 1958), and Peromyscus (McCarley, 1964). Artificial selection for reproductive isolation leading to a strengthening of interstrain or interspecific ethological barriers also has been demonstrated in Drosophila (Koopman, 1950;Wallace, 1954;Knight et al, 1956).…”

Section: Discussionmentioning

confidence: 97%

Natural Selection for Reproductive Isolation in Phlox

Levin¹,

Kerster²

1967

Evolution

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 97%

Natural Selection for Reproductive Isolation in Phlox

Levin¹,

Kerster²

1967

Evolution

View full text Add to dashboard Cite

“…Reproductive character displacement has long been considered a rare phenomenon, in part because numerous studies have failed to find evidence for it (e.g., Asquith et al 1988;Doherty and Howard 1996; for reviews, see Walker 1974;Butlin 1987), and also because only few examples demonstrating it have been generally accepted (e.g., Littlejohn 1965;Fouquette 1975;Waage 1979). However, cases of reproductive character displacement may often go undetected due to gene flow or a bias towards focusing solely on sexual signals.…”

mentioning

confidence: 99%

Reproductive Character Displacement in the Acoustic Communication System of Green Tree Frogs (Hyla Cinerea)

Höbel

Gerhardt²

2003

Evolution

218

183

View full text Add to dashboard Cite

Interactions between species can affect the evolution of their sexual signals, receiver selectivity, or both. One commonly expected outcome is reproductive character displacement, whereby adverse consequences of mismating select for greater differentiation of communication systems in areas of sympatry than in areas of allopatry. We found evidence of reproductive character displacement in the acoustic communication system of green tree frogs (Hyla cinerea). The strength of female preferences for the spectral properties of calls that distinguish conspecific calls from those of a closely related congener, H. gratiosa, was greater in areas of sympatry with H. gratiosa than in areas of allopatry. We also found subtle differences in advertisement calls and in the heights of male calling perches when we restricted our comparisons to localities in which H. gratiosa was also breeding (syntopy) with localities where this species was absent. Hyla cinerea and H. gratiosa show only weak genetic incompatibility, but the calls representative of interspecific hybrids were unattractive to females of both parental species. Hybrids might also be at an ecological disadvantage because of different habitat preferences of the two taxa. Thus, selection against production of less fit or less attractive hybrid or backcross offspring are probably the main causes responsible for the differences documented in this paper.

show abstract

“…In recent years, there have been significant advances in empirical studies (Littlejohn, 1965;Littlejohn et al, 1971;Littlejohn and Watson, 1985;Barton andHewitt, 1981a, 1981b; Harrison and Arnold, 1982;Harrison, 1985Harrison, , 1986Arntzen and Wallis, 1991;Szymura and Barton, 1991), as well as in theory (Bazykin, 1969;Crosby, 1970;May et al, 1975;Endler, 1977;Barton, 1979aBarton, , 1979bBarton, , 1983Barton and Charlesworth, 1984;Slatkin, 1973Slatkin, , 1975Slatkin, , 1981Slatkin, , 1985. This recent literature, reviewed by Barton and Hewitt (1985), and more extensively by Harrison (1990), has stressed the conditions necessary for the stability of hybrid zones, especially the importance of selection against hybrids.…”

mentioning

confidence: 99%

THE DYNAMICS OF TWO HYBRID ZONES IN APPALACHIAN SALAMANDERS OF THE GENUSPLETHODON

Hairston¹,

Wiley

Smith

et al. 1992

Evolution

View full text Add to dashboard Cite

Two zones of intergradation between populations of Plethodon have been studied for 18 and 20 years, respectively. The data consist of systematic scores of colors, made at least twice annually. Near Heintooga Overlook in the Balsam Mountains (Great Smoky Mountains National Park), the salamanders' cheeks are gray. Proceeding north toward the Smokies, there is increasing frequency and intensity of red color at two, four, and six miles. There has been no change in the scores at any location. The width of the zone and our failure to detect any change can be explained by assuming neutrality of the character and random diffusion during the probable time since contact between the two intergrading forms, which most likely took place after the Hypsithermal Interval, 8,000-5,000 BP. At Coweeta Hydrologic Laboratory in the Nantahala Mountains, Plethodon jordani and P. glutinosus hybridize at intermediate elevations. The lateral white spots of glutinosus decrease and the red on the legs of jordani increases with elevation from 685 m to 1,052 m. At the higher elevation, the proportion of animals scored as "pure" jordani declined significantly from 1974 to 1990, an indication that the hybrid zone is spreading upward. The rate of spread is too great to be explained by random diffusion, so selection for glutinosus characters is the best explanation. The rate of spread of the hybrid zone indicates that hybridization began 60-65 years ago, at the end of the time of intense timbering. Such human disturbances have caused hybridization in other organisms.

show abstract

PREMATING ISOLATION IN THE HYLA EWINGI COMPLEX (ANURA: HYLIDAE)

Cited by 85 publications

References 23 publications

Natural Selection for Reproductive Isolation in Phlox

Natural Selection for Reproductive Isolation in Phlox

Reproductive Character Displacement in the Acoustic Communication System of Green Tree Frogs (Hyla Cinerea)

THE DYNAMICS OF TWO HYBRID ZONES IN APPALACHIAN SALAMANDERS OF THE GENUSPLETHODON

Contact Info

Product

Resources

About