scholarly journals Asymmetric Dispersal Can Maintain Larval Polymorphism: A Model Motivated by Streblospio benedicti

2012 ◽  
Vol 52 (1) ◽  
pp. 197-212 ◽  
Author(s):  
Christina Zakas ◽  
David W. Hall
Keyword(s):  
Asymmetric Dispersal ◽  
Streblospio Benedicti

Population abundance of two-patch competitive systems with asymmetric dispersal

2020 ◽  
Vol 81 (1) ◽  
pp. 315-341
Author(s):  
Yuanshi Wang ◽  
Hong Wu ◽  
Yiyang He ◽  
Zhihui Wang ◽  
Kun Hu
Keyword(s):  
Population Abundance ◽  
Competitive Systems ◽  
Asymmetric Dispersal

scholarly journals Asymmetric dispersal is a critical element of concordance between biophysical dispersal models and spatial genetic structure in Great Barrier Reef corals

2019 ◽  
Vol 25 (11) ◽  
pp. 1684-1696 ◽  
Author(s):  
Cynthia Riginos ◽  
Karlo Hock ◽  
Ambrocio M. Matias ◽  
Peter J. Mumby ◽  
Madeleine J. H. Oppen ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Great Barrier Reef ◽  
Spatial Genetic Structure ◽  
Critical Element ◽  
Barrier Reef ◽  
Reef Corals ◽  
Asymmetric Dispersal

scholarly journals Genomic analysis reveals multiple mismatches between biological and management units in yellowfin tuna (Thunnus albacares)

2018 ◽  
Vol 75 (6) ◽  
pp. 2145-2152 ◽  
Author(s):  
Rachel B Mullins ◽  
Niall J McKeown ◽  
Warwick H H Sauer ◽  
Paul W Shaw
Keyword(s):  
Indian Ocean ◽  
Genomic Analysis ◽  
Yellowfin Tuna ◽  
Thunnus Albacares ◽  
Management Units ◽  
Spawning Site ◽  
Asymmetric Dispersal ◽  
Outlier Loci ◽  
The Indian Ocean ◽  
Mixed Stock

Abstract The South African (SAF) yellowfin tuna (Thunnus albacares) fishery represents a potential example of misalignment between management units and biological processes. The SAF fishery spans an operational stock with a boundary at 20°E, either side of which fish are considered part of Atlantic or Indian Ocean regional stocks. However, the actual recruitment of fish from Atlantic and Indian Ocean spawning populations into SAF waters is unknown. To address this knowledge gap, genomic analysis (11 101 SNPs) was performed on samples from Atlantic and Indian Ocean spawning sites, including SAF sites spanning the current stock boundary. Outlier loci conferred high discriminatory power to assignment tests and revealed that all SAF fish were assigned to the Indian Ocean population and that no Atlantic Ocean fish appeared in the SAF samples. Additionally, several Indian Ocean migrants were detected at the Atlantic spawning site demonstrating asymmetric dispersal and the occurrence of a mixed-stock fishery in Atlantic waters. This study highlights both the spatial inaccuracy of current stock designations and a misunderstanding of interactions between the underlying biological units, which must be addressed in light of local and global declines of the species. Specifically, the entire SAF fishery must be managed as part of the Indian Ocean stock.

scholarly journals Anthropogenic landscape change promotes asymmetric dispersal and limits regional patch occupancy in a spatially structured bird population

2012 ◽  
Vol 81 (5) ◽  
pp. 940-952 ◽  
Author(s):  
David C. Pavlacky ◽  
Hugh P. Possingham ◽  
Andrew J. Lowe ◽  
Peter J. Prentis ◽  
David J. Green ◽  
...  
Keyword(s):  
Landscape Change ◽  
Patch Occupancy ◽  
Bird Population ◽  
Anthropogenic Landscape ◽  
Asymmetric Dispersal
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