Isolating Mechanisms and Interspecies Interactions in Anuran Amphibians

Blair, W. Frank

doi:10.1086/404324

Cited by 120 publications

(84 citation statements)

References 13 publications

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“…Second, in a number of animal taxa, prezygotic isolation evolves faster than postzygotic reproductive isolation (Blair 1964;Prager and Wilson 1975;Coyne and Orr 1989;Gleason and Ritchie 1998;Mendelson 2003), indicating that prezygotic mechanisms may be more critical in the initial development of isolation between incipient animal species. The faster evolution of prezygotic mechanisms in animals has also been interpreted as evidence for strong sexual selection acting on prezygotic traits (Gleason and Ritchie 1998).…”

Section: On Comparing Well-studied Groups Of Higher Plants With Many mentioning

confidence: 99%

“…In animal taxa, prezygotic isolation has been found to evolve faster than postzygotic isolation (Blair 1964;Prager and Wilson 1975;Coyne and Orr 1989;Gleason and Ritchie 1998;Mendelson 2003), a difference attributed to different selective forces acting on the two stages of isolation; loci contributing to postzygotic isolation are likely evolving due to drift or indirect selection alone, whereas prezygotic traits may also be subject to direct selection (especially sexual selection), which can speed the overall rate at which prezygotic isolation accumulates (Gleason and Ritchie 1998). However, we detected no evidence for significant rate differences between these stages of reproductive isolation (once the influence of G. falcata was accounted for in Glycine).…”

Section: Evolutionary Rates Between Stages Of Isolation and Between mentioning

confidence: 99%

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Patterns of Reproductive Isolation in Three Angiosperm Genera

2004

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Abstract. Analyses among animal species have found that reproductive isolation increases monotonically with genetic distance, evolves more quickly for prezygotic than postzygotic traits, and is stronger among sympatric than allopatric species pairs. The latter pattern is consistent with expectations under the reinforcement hypothesis. To determine whether similar trends are found among plant species, patterns of reproductive isolation (postpollination prezygotic, postzygotic, and ''total'' isolation) in three plant genera (Glycine, Silene, Streptanthus) were examined using data from previously published artificial hybridization experiments. In Silene, all measures of reproductive isolation were positively correlated with genetic distance. In contrast, in Glycine and Streptanthus, correlations between reproductive isolation and genetic distance were weak or nonsignificant, possibly due to the influence of biologically unusual taxa, variable evolutionary forces acting in different lineages, or insufficient time to accumulate reproductive isolation. There was no evidence that postpollination prezygotic reproductive isolation evolved faster than postzygotic isolation in Glycine or Silene. We also detected no evidence for faster accumulation of postmating prezygotic isolation between sympatric than allopatric species pairs; thus we found no evidence for the operation of speciation via reinforcement. In Silene, which included six polyploid species, results suggest that changes in ploidy disrupt a simple monotonic relationship between isolation and genetic distance.

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Section: On Comparing Well-studied Groups Of Higher Plants With Many mentioning

confidence: 99%

Section: Evolutionary Rates Between Stages Of Isolation and Between mentioning

confidence: 99%

Patterns of Reproductive Isolation in Three Angiosperm Genera

2004

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“…Thus there is no theoretical reason for believing that divergence must be allopatric. However, it has generally been assumed that the cases in which the Wallace effect is known to have acted involve secondary contact of the two species (Blair, 1964;Smith, 1965). It is often quite difficult to determine postfacto whether divergence has occurred in allopatry or sympatry.…”

Section: Resultsmentioning

confidence: 99%

Evolution in closely adjacent plant populations

1978

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SUMMARYThe evolution of reproductive isolation along a dine was investigated using a computer simulation of 10 linearly arranged populations connected by gene flow and subjected to selection which varied either linearly or in a stepwise manner. For nearly all combinations of parameter values a monotonic dine was rapidly established in frequency of alleles at the selected locus, Only at high levels of selection (>0.1) and high levels of assortative mating (>0.4) was there divergence in frequency of the gene determining reproductive isolation.Under these conditions divergence was slow and the dine for the isolating gene was often inverse for many generations, although at equilibrium the dine was always monotonic. Linkage between the selected gene and the isolating gene promoted divergence. Both genetic divergence and reproductive isolation may therefore occur between populations connected by gene flow.Conditions leading to isolation are more stringent than those permitting genetic divergence suggesting that the " cohesion of the biological species" is neither maintained by gene flow nor by the uniformity of selection but by the weakness of forces leading to selection for reproductive isolation. The existence of inverse dines in isolating mechanisms strongly suggests the evolution of isolation in sympatry (following divergence either in sympatry or allopatry,) but it is invalid to conclude that a monotonic dine for reproductive isolation gives a priori evidence of its evolution in allopatry.

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“…The acoustic features of advertisement calls, including the call duration, dominant frequency, call rate, and pulse rate, were frequently used to delimit anuran species in taxonomic studies of complex frog groups (De la Riva et al 1996;Channing et al 2002;Angulo and Reichle 2008;Padial et al 2008). On the other hand, in most anuran species, females use acoustic cues of conspecific males to discriminate between conspecifics and heterospecifics (Blair 1964(Blair , 1968Gerhardt and Huber 2002;Wells 2007) and locate mates (Arch et al 2011). Differentiation of the acoustic features of calling corresponds to that of some other characteristics such as DNA sequences, karyotypes, histology, and morphology, which permit exact conclusions about taxonomy to be drawn (Schneider and Sinsch 2007;Fávero et al 2011;Gómez and Kehr 2011;Liao and Chang 2011;Goldberg et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Reproductive activity and advertisement calls of the Asian common toad Duttaphrynus melanostictus (Amphibia, Anura, Bufonidae) from Bach Ma National Park, Vietnam

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2013

Zool. Stud.

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Background: We examined differences in reproductive activities and intraspecific variations in advertisement calls of Duttaphrynus melanostictus (Schneider, 1799) that lives in a tropical region of central Vietnam. The snout-vent length (SVL) of sexually mature males ranged from 50.2 to 70.3 mm, while that of females ranged from 65.2 to 97.3 mm. Histological analyses of testes revealed that sperm was not present throughout the year, indicating discontinuous reproductive activity for adult males. Adult females were captured year-round, but reproductive females were observed only during months of the auxiliary rainy season (mainly April to July), indicating that females reproduce seasonally. We also estimated levels of within-male variation of each call property and the influences of the ambient temperature, humidity, and the SVL of calling males on acoustic features. Results: The call rate and pulse rate showed intermediate levels of variation, whereas the dominant frequency and call duration were the most stereotyped properties. One-way analyses of variance for six acoustic properties showed that the call rate, pulse rate, and rise time significantly differed (p < 0.05) among localities. Advertisement calls were a series of groups of 56 to 244 (145 ± 54) pulses with an average call duration of 26.722 s, an average pulse rate of 11.69 pulses/s, and an average dominant frequency of 1.293 kHz. The results of the multiple regressions for possible effects of temperature, humidity, and SVL on the six acoustic properties indicated that the dominant frequency, pulse rate, call duration, and rise time were positively significant. Conclusions:In Bach Ma National Park, when air temperature in the recording area decreased to <16.6°C, and advertisement calls of adult males virtually ceased in all three populations.

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Isolating Mechanisms and Interspecies Interactions in Anuran Amphibians

Cited by 120 publications

References 13 publications

Patterns of Reproductive Isolation in Three Angiosperm Genera

Patterns of Reproductive Isolation in Three Angiosperm Genera

Evolution in closely adjacent plant populations

Reproductive activity and advertisement calls of the Asian common toad Duttaphrynus melanostictus (Amphibia, Anura, Bufonidae) from Bach Ma National Park, Vietnam

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