台灣大學漁業科學研究所

研究重點:

一、變暖導致對魚類的不同反應

二、亞熱帶白帶魚的生活史變異

三、白帶魚後代大小和數量的變異性

四、溫度對珊瑚礁魚群早期生命史的影響

一、變暖導致對魚類的不同反應

Assessing temperature effects on life histories for 332 Indo-Pacific fishes, we show divergent warming impacts among fishes: fishes with faster life-cycles will undergo life-history changes to a greater extent under warming compared to those with slower life-cycles (Wang et al. 2020). Furthermore, warming will benefit fishes with slower life-cycles but may impair population growth rates for those with faster life-cycles. These results suggest that ocean warming will cause uneven impacts on sustainability of fishes in the Indo-Pacific (Wang et al. 2020).

二、亞熱帶白帶魚的生活史變異

Spatial variation in con-specific growth rates implies differential population dynamics and likely distinct population structures. Here, we investigate growth variation for the exploited cutlassfish Trichiurus japonicus between two coasts of Taiwan (lat 22.5-25°N). Although variation in environmental conditions between the two coasts was subtle, we found significant differences in demographic structure and male growth rates of cutlassfish. The data suggest that the population that displays a slower growth rate may experience higher mortality, a pattern consistent with fishing-induced evolution on growth (Wang and Heino 2018).

三、白帶魚後代大小和數量的變異性

Life history theory predicts that females should adjust sizes and number of offspring to maximize offspring survival probability based on environmental conditions. Subtropical fish tend to spawn in various seasons. We hypothesize that offspring (egg) size and number change among different seasons. We conduct a field experiment to evaluate this hypothesis based on cutlassfish Trichiurus japonicus between two coasts of Taiwan (Chen et al. 2020).

四、溫度對珊瑚礁魚群早期生命史的影響

Temperature affects species’ population dynamics, but its differential impacts on species early life histories remains understudied. To elucidate temperature effects on the early-life growth among species, we investigate variation in the pelagic larval duration, larval growth rates, and settlement lengths among species and latitudes. These data will advance understanding of range shifts and recruitment for reef fish populations upon warming.

We use a combination of a field study and meta-analysis to carry out our study: a field study allows evaluating the temperature effects on larval traits using in-situ temperature measurements. Moreover, the meta-analysis provides a global assessment of multiple larval traits for a large number of species under rising temperature.

近年重要著作 (2017- ):

Lin, H. C., C. J. Tsai, and H.-Y. Wang (2021) Variation in global distribution, population structures, and demographic history for four Trichiurus cutlassfishes. PeerJ, 9, e12639.

Shimadzu, H. and H.-Y. Wang (2021) Estimating allometric energy allocation between somatic and gonadic growth. Methods in Ecology and Evolution, DOI: 10.1111/2041-210X.13761.

Wang, H.-Y., S.-F. Shen, Y.-S. Chen, Y.-K. Kiang, and M. Heino (2020) Life histories determine divergent population trends for fishes under climate warming. Nature Communications, 11: 4088.

Wang, H.-Y., L. M. Tsang, F. P. Lima, R. Seabra, M. Ganmanee, G. A. Williams, and B. K. K. Chan (2020) Spatial variation in thermal stress experienced by barnacles on rocky shores: the interplay between geographic variation, tidal cycles, and microhabitat temperatures. Frontiers in Marine Science, 7: 553. doi: 10.3389/fmars.2020.00553

Gao, J., J. T. Thorson, C. Szuwalski, and H.-Y. Wang (2020) Historical dynamics of the demersal fish community in the East and South China Seas. Marine and Freshwater Research, 71(9): 1073-1085.

Chen, Y. S., Z. Y. Jeng, and H.-Y. Wang (2020) Changes in reproduction for subtropical cutlassfish Trichiurus japonicus reflect variation in temperature and population demography. Marine Ecology, e12578.

Denis V., J. W. Chen, Q. Chen, Y. E. Hsieh, Y. V. Lin, C. W. Wang, H.-Y. Wang, and N. Sturaro (2019) Biogeography of functional trait diversity in the Taiwanese reef fish fauna. Ecology and Evolution, 9(1): 522-532.

Wang, H.-Y. and M. Heino (2018) Adaptive and plastic variation in growth and maturation in the cutlassfish Trichiurus japonicus in subtropical Pacific. Fishery Bulletin 116: 171-182.

Lavoue, S., J. A. M. Bertrand, H.-Y. Wang, W.-J. Chen, H. C. Ho, H. Motomura, H. Hata, T. Sado, and M. Miya (2017) Molecular systematics of the anchovy genus Encrasicholina in the Northwest Pacific. PLoS One, 12 (7): 0181329.

Shiao, J. C., H. B. Lu, J. Hsu, H.-Y. Wang, S. K. Chang, M. Y. Huang, and T. Ishihara (2017) Changes in size, age, and sex ratio composition of Pacific bluefin tuna (Thunnus orientalis) on the northwestern Pacific Ocean spawning grounds. ICES Journal of Marine Science, 74 (1): 204-214.

Wang, H.-Y., C. A. Dong, and H.-C. Lin (2017) DNA barcoding of fisheries catch to reveal composition and distribution of cutlassfishes along the Taiwan coast. Fisheries Research 187: 103-109.

Wang, H.-Y., Y.-S. Chen, C.-C. Hsu, and S.-F. Shen (2017) Fishing-induced changes in adult length are mediated by skipped-spawning. Ecological Applications, 27 (1): 274-284.