Genetic diversity and metapopulation structure of the brown swimming crab (Callinectes bellicosus) along the coast of Sonora, Mexico: Implications for fisheries management

2019 ◽  
Vol 212 ◽  
pp. 97-106 ◽  
Author(s):  
Miguel Ángel Cisneros-Mata ◽  
Adrián Munguía-Vega ◽  
Demetrio Rodríguez-Félix ◽  
Eugenio Alberto Aragón-Noriega ◽  
José Manuel Grijalva-Chon ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Fisheries Management ◽  
Swimming Crab ◽  
Metapopulation Structure

scholarly journals Genetic population subdivision of the blue swimming crab (Portunus pelagicus) across Indonesia inferred from mitochondrial DNA: Implication to sustainable fishery

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0240951
Author(s):  
Hawis Madduppa ◽  
Rina Martaulina ◽  
Zairion Zairion ◽  
Resha Mukti Renjani ◽  
Mujizat Kawaroe ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mitochondrial Dna ◽  
Fisheries Management ◽  
Global Market ◽  
Genetic Connectivity ◽  
Market Demand ◽  
Swimming Crab ◽  
Portunus Pelagicus ◽  
Spatial Connectivity ◽  
Sustainable Fishery

The blue swimming crab (BSC), Portunus pelagicus (Linnaeus 1758), inhabits coastal areas of Southeast and East Asia, and is one of high fisheries commodities with an export value for Indonesia and an increasing global market demand, annually. However, the data of genetic diversity and their spatial connectivity of populations in Indonesia are not yet known, even when it is important to inform stock unit management and sustainable use. This study aimed to determine the genetic diversity and differentiation of blue swimming crabs across Indonesian populations in different Fishery Management Area (FMA), and their spatial genetic connectivity, as well as to deliver implications for sustainable fishery. A total of 297 individuals were collected and amplified using cytochrome oxidase I mitochondrial DNA. This study has showed the highest values for haplotype and nucleotide diversity in the eastern part of Indonesia, where exploitation is relatively low. Significant genetic differentiation between populations (FST = 0.954; p < 0.001) and the fisheries management areas (FST = 0.964; p < 0.001) were revealed. Low spatial connectivity was observed between populations in a distance of at least more than 60 kilometers. This study suggests that BSC populations in Indonesia, likely have several stock units, and preferably different fisheries management plans and actions across the region thoroughly and simultaneously. This would be effective for management and their sustainable conservation.

scholarly journals Impact of cyclones on hard coral and metapopulation structure, connectivity and genetic diversity of coral reef fish

Coral Reefs ◽  
2021 ◽  
Author(s):  
Gabriele Gerlach ◽  
Philipp Kraemer ◽  
Peggy Weist ◽  
Laura Eickelmann ◽  
Michael J. Kingsford
Keyword(s):  
Genetic Diversity ◽  
Coral Reef ◽  
Genetic Structure ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Population Genetic Study ◽  
Hard Coral ◽  
Great Loss ◽  
Metapopulation Structure ◽  
The Impact

AbstractCyclones have one of the greatest effects on the biodiversity of coral reefs and the associated species. But it is unknown how stochastic alterations in habitat structure influence metapopulation structure, connectivity and genetic diversity. From 1993 to 2018, the reefs of the Capricorn Bunker Reef group in the southern part of the Great Barrier Reef were impacted by three tropical cyclones including cyclone Hamish (2009, category 5). This resulted in substantial loss of live habitat-forming coral and coral reef fish communities. Within 6–8 years after cyclones had devastated, live hard corals recovered by 50–60%. We show the relationship between hard coral cover and the abundance of the neon damselfish (Pomacentrus coelestis), the first fish colonizing destroyed reefs. We present the first long-term (2008–2015 years corresponding to 16–24 generations of P. coelestis) population genetic study to understand the impact of cyclones on the meta-population structure, connectivity and genetic diversity of the neon damselfish. After the cyclone, we observed the largest change in the genetic structure at reef populations compared to other years. Simultaneously, allelic richness of genetic microsatellite markers dropped indicating a great loss of genetic diversity, which increased again in subsequent years. Over years, metapopulation dynamics were characterized by high connectivity among fish populations associated with the Capricorn Bunker reefs (2200 km2); however, despite high exchange, genetic patchiness was observed with annual strong genetic divergence between populations among reefs. Some broad similarities in the genetic structure in 2015 could be explained by dispersal from a source reef and the related expansion of local populations. This study has shown that alternating cyclone-driven changes and subsequent recovery phases of coral habitat can greatly influence patterns of reef fish connectivity. The frequency of disturbances determines abundance of fish and genetic diversity within species.

The Systematics of Salmonid Fishes of Recently Glaciated Lakes

1972 ◽  
Vol 29 (6) ◽  
pp. 639-671 ◽  
Author(s):  
Robert J. Behnke
Keyword(s):  
Genetic Diversity ◽  
Reproductive Isolation ◽  
Fisheries Management ◽  
Common Ancestor ◽  
Morphological Divergence ◽  
Salmonid Fishes ◽  
Sympatric Populations ◽  
Homing Behavior ◽  
Taxonomic Problem ◽  
Fisheries Biology

The systematics of the subfamilies Salmoninae and Coregoninae of recently glaciated regions are reviewed. Interrelation between systematics and fisheries biology are stressed, pointing out the abundance of intraspecific genetic diversity of some salmonid fishes manifested in ecological and behavioral specializations, but not necessarily by morphological divergence. Innate, reproductive homing behavior of salmonid fishes may allow closely related populations to exist in sympatry and maintain reproductive isolation. Examples are cited to support the contention that many sympatric "sibling species" have evolved from a common ancestor in postglacial times. Closely related, sympatric populations are a major taxonomic problem, but this phenomenon which allows a species to consist of genetically discrete units with reproductive isolation between the stocks is of great significance for fisheries management. Postglacial salmonid communities are typically fragile and highly susceptible to disruption or destruction by introductions, eutrophication, and exploitation. Every effort should be made to protect the genetic diversity of a species.

Evidence for low genetic diversity and metapopulation structure in Canada yew (Ta×us canadensis): considerations for conservation

2001 ◽  
Vol 31 (1) ◽  
pp. 110-116 ◽  
Author(s):  
Sauphie Senneville ◽  
Jean Beaulieu ◽  
Gaëtan Daoust ◽  
Marie Deslauriers ◽  
Jean Bousquet
Keyword(s):  
Genetic Diversity ◽  
Low Genetic Diversity ◽  
Metapopulation Structure ◽  
Canada Yew

Status, Distribution, and Conservation of Native Freshwater Fishes of Western North America

2007 ◽  
Keyword(s):  
Genetic Diversity ◽  
Fisheries Management ◽  
Great Plains ◽  
Fish Assemblages ◽  
Missouri River ◽  
Large Rivers ◽  
Conservation Value ◽  
Clear Water ◽  
Habitat Alterations ◽  
Riverine Habitats

ABSTRACT Of 55 fish species that were likely native to the Great Plains region of Montana, Wyoming, and Colorado, 33 (60%) species have been given some kind of conservation designation by at least one of the state fisheries management agencies because they are rare or in decline. The species with conservation designations were generally fishes that inhabit large rivers of the upper Missouri River drainage (14 species); live in small, cool- or clear-water streams (9 species); or reside in a wide array of habitats but occur at the edge of their ranges in individual states (10 species). Changes in riverine habitats due to construction of reservoirs on large rivers and introduction of exotic piscivorous fishes to reservoirs are major causes of decline of riverine species in the Great Plains region of Montana, Wyoming, and Colorado. Fishes that occur as disjunct, relict populations in small cool- or clear-water streams or at the periphery of their range in individual states are susceptible to local extirpations caused by habitat alterations and introductions of exotic piscivorous fishes but may have significant conservation value due to their genetic diversity. Given the large proportion of native Great Plains fishes that are declining or threatened with extirpation in individual states, a region-wide effort to maintain native fish assemblages is warranted.

scholarly journals Disruption of Metapopulation Structure Reduces Tasmanian Devil Facial Tumour Disease Spread at the Expense of Abundance and Genetic Diversity

Pathogens ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1592
Author(s):  
Rowan Durrant ◽  
Rodrigo Hamede ◽  
Konstans Wells ◽  
Miguel Lurgi
Keyword(s):  
Genetic Diversity ◽  
Disease Transmission ◽  
Transmission Rate ◽  
Extinction Risk ◽  
Disease Prevalence ◽  
Disease Spread ◽  
Tasmanian Devil ◽  
Local Populations ◽  
Metapopulation Structure ◽  
Devil Facial Tumour Disease

Metapopulation structure plays a fundamental role in the persistence of wildlife populations. It can also drive the spread of infectious diseases and transmissible cancers such as the Tasmanian devil facial tumour disease (DFTD). While disrupting this structure can reduce disease spread, it can also impair host resilience by disrupting gene flow and colonisation dynamics. Using an individual-based metapopulation model we investigated the synergistic effects of host dispersal, disease transmission rate and inter-individual contact distance for transmission, on the spread and persistence of DFTD from local to regional scales. Disease spread, and the ensuing population declines, are synergistically determined by individuals’ dispersal, disease transmission rate and within-population mixing. Transmission rates can be magnified by high dispersal and inter-individual transmission distance. The isolation of local populations effectively reduced metapopulation-level disease prevalence but caused severe declines in metapopulation size and genetic diversity. The relative position of managed (i.e., isolated) local populations had a significant effect on disease prevalence, highlighting the importance of considering metapopulation structure when implementing metapopulation-scale disease control measures. Our findings suggest that population isolation is not an ideal management method for preventing disease spread in species inhabiting already fragmented landscapes, where genetic diversity and extinction risk are already a concern.

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