caa a22 4500 60622808X CHVBK 20210128101201.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10641-014-0357-1 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0357-1 Evidence of prey partition for the three sympatric Chromis species (Perciformes: Pomacentridae) based on ecomorphological analyses [Elektronische Daten] [Young Song, Jin-Koo Kim] Ecomorphological adaptations represent the response of organisms to environmental factors during evolution. The jaw bones of three sympatric species of Chromis (Chromis notata, Chromis fumea and Chromis albicauda) were assessed using a geometric morphometric analysis, and were compared with prey composition as determined by stomach content analyses. According to a canonical variate analysis based on 48 landmarks, the three species show distinct differences in the premaxilla, dentary, angular, and retroarticular. They feed mainly on planktonic copepods, which represent ca. 90% of their total diets; however, their diets slightly but significantly differ in the frequencies of occurrence of amphipods, euphausiids, mysids, decapods, and polychaetes. A comprehensive review indicates that the thick mandible of C. notata is an adaptive trait which confers the capability to feed on relatively harder prey items than does C. fumea, in which the mandible is less robust. However, the protrusive ability of the upper jaw in C. fumea is enhanced relative to that in C. notata and C. albicauda, because of a long ascending process in C. fumea. The long thin lower jaw of C. fumea is regarded as a morpho-functional adaption for effectively catching pelagic prey, such as planktonic copepod, in contrast to chewing and biting of prey. Our results firstly suggest evidence of prey partition for the sympatric three Chromis species (C. notata, C. fumea and C. albicauda) based on comparison between jaw bone structure and prey compostion, may help to understand evolutionary histories among species. Springer Science+Business Media Dordrecht, 2014 Eco-morphology nationallicence Jaw bone structure nationallicence Food item nationallicence Feeding nationallicence Chromis notata nationallicence Chromis fumea nationallicence Chromis albicauda nationallicence Pomacentridae nationallicence Song Young Department of Marine Biology, Pukyong National University, 599-1 Daeyeon 3-Dong, 608-737, Nam-Gu, Busan, Korea aut Kim Jin-Koo Department of Marine Biology, Pukyong National University, 599-1 Daeyeon 3-Dong, 608-737, Nam-Gu, Busan, Korea aut Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1265-1275 0378-1909 98:5<1265 2015 98 10641 https://doi.org/10.1007/s10641-014-0357-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0357-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Song Young Department of Marine Biology, Pukyong National University, 599-1 Daeyeon 3-Dong, 608-737, Nam-Gu, Busan, Korea aut NATIONALLICENCE 700 1- Kim Jin-Koo Department of Marine Biology, Pukyong National University, 599-1 Daeyeon 3-Dong, 608-737, Nam-Gu, Busan, Korea aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1265-1275 0378-1909 98:5<1265 2015 98 10641