Evolution of East Asian Ninespine Sticklebacks as Shown by Mitochondrial DNA Control Region Sequences

Takahashi, Hiroshi; Gotō, Akira

doi:10.1006/mpev.2001.1001

Cited by 51 publications

(68 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the divergence of the two species occurred in the late Pliocene (around 3 Myr), when there existed an important freshwater system connecting rivers of the Japanese Archipelago with those of the Asian Continent (Nishimura, 1980), the divergence rate would be much less than 1%/Myr. These estimated values for divergence rate are relatively small compared with those previously reported for the control region of several other fish groups, e.g., 1.7% for characines (Sivasundar et al, 2001), 2.7-5.4% for ninespine sticklebacks (Takahashi and Goto, 2001), 5.6% for cichlids (Nagl et al, 2000), and 12% for swordfish (Alvarado Bremer et al, 1995).…”

Section: Discussionmentioning

confidence: 67%

Genetic population structure of Japanese bagrid catfishes

Watanabe

Nishida

2003

Ichthyological Research

View full text Add to dashboard Cite

The genetic population structures of four bagrid catfishes, allopatrically distributed in Japan, were investigated based on nucleotide sequence data from the mitochondrial control region (ca. 420 bp) of 296 specimens from 29 river systems. Almost no sequence variations were found within riverine populations of each species, especially Pseudobagrus ichikawai, in which no individual variations were found in any specimens from eight river systems throughout its range. In contrast, the P. nudiceps population in the Lake Biwa-Yodo River system showed relatively high polymorphism. These results imply that the riverine populations have undergone a bottleneck situation at some time. Most of the riverine populations of P. nudiceps and P. ichikawai, which are mainly distributed in areas around an inland sea or bay, were fixed into a single haplotype for each species. On the other hand, in P. tokiensis and P. aurantiacus, which are distributed in areas surrounding extensive mountainous regions, the haplotype compositions clearly differed among conspecific populations. These results suggest that some degree of gene flow existed among populations of each of the former two species during glacial regression periods. Based on the genetic variability of P. fulvidraco, widely distributed in continental East Asia, and the degree of genetic divergence between P. aurantiacus and its possible sister species, P. taeniatus, in China, the evolutionary rate of East Asian bagrids appears to be relatively low, estimated at a few percent per million years or less.

show abstract

Section: Discussionmentioning

confidence: 67%

Genetic population structure of Japanese bagrid catfishes

Watanabe

Nishida

2003

Ichthyological Research

View full text Add to dashboard Cite

show abstract

“…To investigate this further in the four experimental populations, we sequenced 729 bp of the mitochondrial control region (Takahashi & Goto 2001;Mattern 2004) for five individuals from Brannen, Dougan and North Lake, and four from Sproat Lake. We also sequenced fish from two marine populations: six from the Nanaimo River (on the Strait of Georgia) and seven from Grappler Inlet (near Bamfield on the west coast of Vancouver Island).…”

Section: (B) Morphological Analysismentioning

confidence: 99%

Strong assortative mating between allopatric sticklebacks as a by-product of adaptation to different environments

2005

View full text Add to dashboard Cite

Speciation involves the evolution of reproductive isolation between populations. One potentially important mechanism is the evolution of pre-or postzygotic isolation between populations as a by-product of adaptation to different environments. In this paper, we tested for assortative mating between allopatric stickleback populations adapted to different ecological niches. Our experimental design controlled for interpopulation interactions and non-adaptive explanations for assortative mating. We found that prezygotic isolation was surprisingly strong: when given a choice, the majority of matings occurred between individuals from similar environments. Our results indicate that the by-product mechanism is a potent source of reproductive isolation, and likely contributed to the origin of sympatric species of sticklebacks.

show abstract

“…They claimed that the two types should be regarded as independent species, according to the biological species concept (Mayr, 1963). On the other hand, Takahashi and Goto (2001) suggested that the fresh-and brackish-water types had diverged quite recently or otherwise exchanged mitochondrial DNA (mtDNA) through introgressive hybridization, on the grounds that there was no obvious difference in their mtDNA control region sequences. Similar examples of discordant patterns of nuclear and mtDNA are abundant in sticklebacks (e.g., McPhail, 1999, 2000;Takahashi and Takata, 2000).…”

Section: Introductionmentioning

confidence: 99%

Hybrid Male Sterility between the Fresh- and Brackish-water Types of Ninespine Stickleback Pungitius pungitius (Pisces, Gasterosteidae)

2005

Self Cite

View full text Add to dashboard Cite

-Two ecologically distinct forms, fresh-and brackish-water types, of ninespine stickleback coexist in several freshwater systems on the coast of eastern Hokkaido. Recent genetic analyses of 13 allozyme loci revealed genetic separation between the two types even though their spawning grounds were in close proximity. On the other hand, there is only a small difference in mitochondrial DNA (mtDNA) sequence between the two types suggesting that they diverged quite recently or that mtDNA introgression occurred between them. To test for postzygotic reproductive isolating mechanisms and hybrid mediated gene flow, we examined the viability and reproductive performance of reciprocal F 1 hybrids. The hybrids grew to the adult size normally and both sexes expressed secondary sexual characters in the reciprocal crosses. The female hybrids were reciprocally fertile, while the male hybrids were reciprocally sterile. Histological and flow-cytometric analyses of the hybrid testis revealed that the sterility pattern was classified as 'gametic sterility,' with gonads of normal size but abnormal spermatogenesis. To our knowledge, the present finding is a novel example of one sex hybrid sterility in the stickleback family (Gasterosteidae).

show abstract

Evolution of East Asian Ninespine Sticklebacks as Shown by Mitochondrial DNA Control Region Sequences

Cited by 51 publications

References 38 publications

Genetic population structure of Japanese bagrid catfishes

Genetic population structure of Japanese bagrid catfishes

Strong assortative mating between allopatric sticklebacks as a by-product of adaptation to different environments

Hybrid Male Sterility between the Fresh- and Brackish-water Types of Ninespine Stickleback Pungitius pungitius (Pisces, Gasterosteidae)

Contact Info

Product

Resources

About