Resource‐based adaptive divergence in the freshwater fish<i>Telmatherina</i>from Lake Matano, Indonesia

Roy, Denis; Paterson, Gordon; Hamilton, Paul B.; Heath, Daniel D.; Haffner, G. Douglas

doi:10.1111/j.1365-294x.2006.03106.x

Cited by 41 publications

(63 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For instance, introgressive hybridization between stream-and lake-dwelling sailfin silversides [78] has lead to severe confusion in previous studies relying solely on mitochondrial markers for species delineation [e.g. 73,76,79]. The absence of species-level resolution in mitochondrial markers is not unexpected in evolving radiations, particularly when ecological speciation takes place in the absence of geographical barriers, as observed in the endemic lacustrine species of Lake Matano [80,81].…”

Section: The Wallacea Ichthyofaunamentioning

confidence: 97%

DNA Barcoding Indonesian freshwater fishes: challenges and prospects

Hubert¹,

Kadarusman²,

Wibowo³

et al. 2015

DNA Barcodes

View full text Add to dashboard Cite

With 1172 native species, the Indonesian ichthyofauna is among the world’s most speciose. Despite that the inventory of the Indonesian ichthyofauna started during the eighteen century, the numerous species descriptions during the last decades highlight that the taxonomic knowledge is still fragmentary. Meanwhile, the fast increase of anthropogenic perturbations during the last decades is posing serious threats to Indonesian biodiversity. Indonesia, however, is one of the major sources of export for the international ornamental trade and home of several species of high value in aquaculture. The development of new tools for species identification is urgently needed to improve the sustainability of the exploitation of the Indonesian ichthyofauna. With the aim to build comprehensive DNA barcode libraries, the co-authors have started a collective effort to DNA barcode all Indonesian freshwater fishes. The aims of this review are: (1) to produce an overview of the ichthyological researches conducted so far in Indonesia, (2) to present an updated checklist of the freshwater fishes reported to date from Indonesia’s inland waters, (3) to highlight the challenges associated with its conservation and management, (4) to present the benefits of developing comprehensive DNA barcode reference libraries for the conservation of the Indonesian ichthyofauna.

show abstract

Section: The Wallacea Ichthyofaunamentioning

confidence: 97%

DNA Barcoding Indonesian freshwater fishes: challenges and prospects

Hubert¹,

Kadarusman²,

Wibowo³

et al. 2015

DNA Barcodes

View full text Add to dashboard Cite

show abstract

“…For these reasons, it is desirable to study contemporary niche expansions to gain insight into what ecological and geographical settings promote differentiation. Well-described examples come from fishes in postglacial lakes (Schluter & Rambaut 1996;Knudsen et al 2006;Roy et al 2007), lizards on islands (Herrel et al 2008) and host shifts in insect systems ( Feder et al 1988;Carroll & Boyd 1992), but little is known about the initial stages of niche expansion outside these settings.…”

Section: Discussion (A) Niche Expansion and Adaptive Divergencementioning

confidence: 99%

“…Finally, niche expansion is an important precursor to microevolutionary processes such as adaptive divergence ( Roy et al 2007) that presumably lead to Niche expansion and adaptive differentiation J. E. McCormack & T. B. Smith 2161 macroevolutionary events such as ecological speciation and adaptive radiation (Simpson 1953;Schluter 2000). Studies of intraspecific divergence in contemporary niche expansions, therefore, can elucidate the spatial and ecological context of incipient divergence in a way that is difficult to do after the fact.…”

Section: (D) Potential Confounding Factorsmentioning

confidence: 99%

Niche expansion leads to small-scale adaptive divergence along an elevation gradient in a medium-sized passerine bird

McCormack

Smith

2008

Proc. R. Soc. B.

View full text Add to dashboard Cite

Niche expansion can lead to adaptive differentiation and speciation, but there are few examples from contemporary niche expansions about how this process is initiated. We assess the consequences of a niche expansion by Mexican jays (Aphelocoma ultramarina) along an elevation gradient. We predicted that jays at high elevation would have straighter bills adapted to feeding on pine cones, whereas jays at low elevation would have hooked bills adapted to feeding on acorns. We measured morphological and genetic variation of 95 adult jays and found significant differences in hook length between elevations in accordance with predictions, a pattern corroborated by analysis at the regional scale. Genetic results from microsatellite and mtDNA variation support phenotypic differentiation in the presence of gene flow coupled with weak, but detectable genetic differentiation between high-and low-elevation populations. These results demonstrate that niche expansion can lead to adaptive divergence despite gene flow between parapatric populations along an elevation gradient, providing information on a key precursor to ecological speciation.

show abstract

“…A recent study focusing on adaptive divergence of L. Matano's Telmatherina (Roy et al 2007b) tested for mtDNA-clade specific differentiation of head morphology and resource use. Roundfins (''clade I'' in Roy et al 2007b) were most distinct compared to both mtDNA clades of sharpfins (''clades II'' and ''III''), consistent with an offshore pelagic lifestyle in roundfins versus rather inshore benthic or epibenthic ecology in sharpfins (Roy et al 2007b; see also Herder et al 2006aHerder et al , 2008Herder and Schliewen in press).…”

Section: Introductionmentioning

confidence: 99%

Phenotypic traits meet patterns of resource use in the radiation of “sharpfin” sailfin silverside fish in Lake Matano

2009

View full text Add to dashboard Cite

Disruptive natural selection on traits related to resource exploitation may lead to differential adaptation and finally to speciation. Trait utility, the performance of traits in terms of fitness, is a central criterion for the recognition of adaptive radiation. Utility of morphological structures involved in foraging can be detected by relating their variation to individual resource use. Here, we test for trophic adaptations in the radiation of ''sharpfin'' sailfin silversides (Atheriniformes: Telmatherinidae), endemic to ancient graben-lake Matano in central Sulawesi (Indonesia). This small species-flock is characterized by high phenotypic diversity, including traits most likely related to feeding ecology. Previous analyses suggest that species boundaries are porous, indicating very recent or possibly ongoing processes of species flock formation. To test for adaptation to resource use in this radiation, we compared morphological traits among trophic groups of individuals as identified by stomach content analyses. We analyzed variation in candidate structures or structural complexes commonly recognized as indicative of trophic adaptation in fish radiations, including shapes of body, oral and pharyngeal jaws, gill rakers and body size. We found fine-scaled morphological differentiation according to feeding habits, covering all traits analyzed. Fish-, shrimp-and egg-feeders were most distinct, with major axes of morphological variation fitting patterns of adaptation reported from other lacustrine fish radiations. Thus, the present results are consistent with fine-scaled morphological adaptation to resource use, supporting the adaptive character of the sharpfin sailfin silverside radiation.Electronic supplementary material The online version of this article (

show abstract

Resource‐based adaptive divergence in the freshwater fishTelmatherinafrom Lake Matano, Indonesia

Cited by 41 publications

References 76 publications

DNA Barcoding Indonesian freshwater fishes: challenges and prospects

DNA Barcoding Indonesian freshwater fishes: challenges and prospects

Niche expansion leads to small-scale adaptive divergence along an elevation gradient in a medium-sized passerine bird

Phenotypic traits meet patterns of resource use in the radiation of “sharpfin” sailfin silverside fish in Lake Matano

Contact Info

Product

Resources

About