Do exotic poeciliids affect the distribution or trophic niche of native fishes? Absence of evidence from Hong Kong streams

2021 ◽  
Author(s):  
Alphonse Hin Fat Tsang ◽  
David Dudgeon
Keyword(s):  
Hong Kong ◽  
Trophic Niche ◽  
Native Fishes ◽  
Absence Of Evidence

scholarly journals Can translocated native fishes retain their trophic niche when confronted with a resident invasive?

2014 ◽  
Vol 24 (3) ◽  
pp. 456-466 ◽  
Author(s):  
Jonathan J. Spurgeon ◽  
Craig P. Paukert ◽  
Brian D. Healy ◽  
Cheryl A. Kelley ◽  
Daniel P. Whiting
Keyword(s):  
Trophic Niche ◽  
Native Fishes

scholarly journals Patterns of trophic niche divergence between invasive and native fishes in wild communities are predictable from mesocosm studies

2015 ◽  
Vol 84 (4) ◽  
pp. 1071-1080 ◽  
Author(s):  
Thi Nhat Quyen Tran ◽  
Michelle C. Jackson ◽  
Danny Sheath ◽  
Hugo Verreycken ◽  
J. Robert Britton
Keyword(s):  
Trophic Niche ◽  
Niche Divergence ◽  
Native Fishes

Trophic niche overlap between native and non-native fishes

Hydrobiologia ◽  
2014 ◽  
Vol 746 (1) ◽  
pp. 291-301 ◽  
Author(s):  
Fernando Córdova-Tapia ◽  
Moisés Contreras ◽  
Luis Zambrano
Keyword(s):  
Niche Overlap ◽  
Trophic Niche ◽  
Native Fishes

Evaluation of Trophic Niche Overlap between Native Fishes and Young-of-the-Year Common Carp

2014 ◽  
Vol 172 (1) ◽  
pp. 91-106 ◽  
Author(s):  
Jessica M. Howell ◽  
Michael J. Weber ◽  
Michael L. Brown
Keyword(s):  
Common Carp ◽  
Niche Overlap ◽  
Trophic Niche ◽  
Native Fishes ◽  
Young Of The Year

scholarly journals Improvements of Population Fitness and Trophic Status of a Benthic Predatory Fish Following a Trawling Ban

2021 ◽  
Vol 8 ◽  
Author(s):  
Lily S. R. Tao ◽  
Yanny K. Y. Mak ◽  
Valerie C. M. Ho ◽  
Ronia C.-t. Sham ◽  
Tommy T. Y. Hui ◽  
...  
Keyword(s):  
Hong Kong ◽  
Body Size ◽  
Size Structure ◽  
Trophic Position ◽  
Isotope Analysis ◽  
Trophic Niche ◽  
Trophic Dynamics ◽  
Predatory Fish ◽  
Benthic Habitats ◽  
Fish Samples

Trawl fisheries have been shown to cause overfishing and destruction of benthic habitats in the seabed. To mitigate these impacts, a trawling ban has been enforced in Hong Kong waters since December 31, 2012 to rehabilitate the ecosystem and enhance fisheries resources. Previous studies demonstrated that reduced trawling activities would increase the heterogeneity of benthic habitats, thereby enhancing species richness and abundance of benthic fauna and providing more prey resources for predatory fishes. This study aimed to test a hypothesis that the population and trophic dynamics of the Bartail flathead Platycephalus indicus, a heavily fished benthic predatory fish, at inner and outer Tolo Channel of Hong Kong (i.e., EI and EO) improved with increases in their body size, abundance, biomass, trophic niche, and trophic position after the trawl ban. Samples were collected from trawl surveys before and after the trawl ban to compare the pre-ban and post-ban populations of P. indicus from EI and EO. Body size, abundance, and biomass were assessed in 2004, 2013–2014, and 2015–2016, whereas trophic niche and trophic position were analyzed based on stable isotopes of fish samples collected in dry season of 2012, 2015, and 2018. Following the trawl ban, the abundance and biomass of P. indicus increased in EO, with body size increased in EI. Furthermore, as indicated by the results of stable isotope analysis (SIA) on their tissues and prey items, trophic niche, and trophic position of P. indicus increased in EI and EO, respectively. Our study demonstrated that the trawl ban had promoted the recovery of a predatory fish population through restoring size structure and trophic dynamics.

Verocytotoxin-producing Escherichia coli infection: The Hong Kong experience

1998 ◽  
Vol 13 (11-s4) ◽  
pp. S289-S293 ◽  
Author(s):  
SSY WONG ◽  
WC YAM ◽  
PHM LEUNG ◽  
PCY WOO ◽  
KY YUEN
Keyword(s):  
Escherichia Coli ◽  
Hong Kong ◽  
Escherichia Coli Infection
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