Resilience of invasive tubeworm ( Hydroides dirampha ) to warming and salinity stress and its implications for biofoulin
- PDF / 1,712,889 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 6 Downloads / 149 Views
ORIGINAL PAPER
Resilience of invasive tubeworm (Hydroides dirampha) to warming and salinity stress and its implications for biofouling community dynamics Ting‑Xuan Liu1 · Seneca Kinn‑Gurzo2 · Kit Yu Karen Chan1,2 Received: 23 May 2020 / Accepted: 26 August 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Anthropogenic activities have accelerated the movement of non-indigenous species throughout the world. One approach to predict the spread of non-indigenous species is to employ bioclimatic envelope models which often assume niche conservation among sympatric, closely related species. Here, we test this assumption by comparing early developmental progress of two non-indigenous calcareous biofouling tubeworms Hydroides elegans and H. dirampha. In the subtropical Hong Kong monsoon climate, H. dirampha and H. elegans experience dramatic seasonal fluctuations in temperature (from 17 to 30 °C) and salinity (from 15 to 34 psu). Hydroides elegans was previously shown to be sensitive to lower salinity and warmer temperature while H. dirampha persisted in the field under these seasonal conditions. Thus, we hypothesize that the observed shift in abundance is due to the resilience of early stages of H. dirampha to the interactive stress of warming and lower salinity. Larval survival, growth, clearance, and settlement rate of H. dirampha were quantified in a 2 × 3 factorial experiment (24 and 28 °C; 20, 26, 32 psu). Stage-dependent tolerance was observed: cleavage was hindered by low salinity. However, larval growth and clearance did not follow this trend and instead peaked at 26 psu. Similarly, settlement rate did not decrease with freshening; rather, it peaked at 26 psu under warming. The salinity tolerance of H. dirampha is compared with that determined by Qiu and Qian (Mar Ecol Prog Ser 168: 127–134, 1998) for H. elegans. Differences in larval physiological tolerances could shape abundance and distribution of a single species as well as broader community structure.
Introduction Anthropogenic activities are rapidly changing global ecosystems. Increased greenhouse gas emissions intensify ocean acidification, warming, and climate variability (IPCC 2019). Responsible Editor: M. Byrne Reviewers: N. Espinel-Velasco, E. Kupriyanova and an undisclosed expert. Ting-Xuan, Liu, Seneca Kinn-Gurzo are Co-first authors Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00227-020-03758-y) contains supplementary material, which is available to authorized users. * Kit Yu Karen Chan [email protected] 1
Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR
Biology Department, Swarthmore College, 500 College Ave, Swarthmore, PA 19081, USA
2
Concurrently, activities, such as shipping, construction, and aquaculture, have expedited the rate of movement of nonindigenous species (NIS) to areas well beyond their endemic range (Chan et al. 2019). Climate change is expected to exacerbate both the rate of inv
Data Loading...
