Fish and Blue Crab Assemblages in the Shore Zone of Tidal Creeks in the Delaware Coastal Bays

2013 ◽  
Vol 20 (1) ◽  
pp. 69-90 ◽  
Author(s):  
Brian P. Boutin ◽  
Timothy E. Targett
Keyword(s):  
Blue Crab ◽  
Tidal Creeks ◽  
Shore Zone ◽  
Coastal Bays

scholarly journals Factors Influencing Colonization and Survival of Juvenile Blue Crabs Callinectes sapidus in Southeastern U.S. Tidal Creeks

Diversity ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 491
Author(s):  
Paul J. Rudershausen ◽  
Jeffery H. Merrell ◽  
Jeffrey A. Buckel
Keyword(s):  
Salt Marsh ◽  
Land Cover ◽  
Blue Crab ◽  
Detection Probability ◽  
Tidal Creek ◽  
Callinectes Sapidus ◽  
Blue Crabs ◽  
Tidal Creeks ◽  
Occupancy Dynamics ◽  
Factors Influencing

Tidal creeks along the southeastern U.S. and Gulf of Mexico coastlines provide nursery habitats for commercially and ecologically important nekton, including juvenile blue crabs Callinectes sapidus, a valuable and heavily landed seafood species. Instream and watershed urbanization may influence the habitat value that tidal creeks provide to blue crabs. We investigated natural and anthropogenic factors influencing juvenile blue crab occupancy dynamics in eight first-order tidal creeks in coastal North Carolina (USA). An auto-logistic hierarchical multi-season (dynamic) occupancy model with separate ecological and observation sub-models was fitted to juvenile blue crab presence/absence data collected over replicate sampling visits in multiple seasons at three fixed trapping sites in each creek. Colonization and survival are the processes operating on occupancy that are estimated with this formulation of the model. Covariates considered in the ecological sub-model included watershed imperviousness, the percent of salt marsh in each creek’s high tide area, percent salt marsh edge, site-level water depth, and site-level salinity. Temperature, salinity, and dissolved oxygen were covariates considered in the observation sub-model. In the ecological sub-model, watershed imperviousness was a meaningful negative covariate and site-level salinity was a positive covariate of survival probability. Imperviousness and salinity were each marginally meaningful on colonization probability. Water temperature was a positive covariate of detection probability in the observation sub-model. Mean estimated detection probability across all sites and seasons of the study was 0.186. The results suggest that development in tidal creek watersheds will impact occupancy dynamics of juvenile blue crabs. This places an emphasis on minimizing losses of natural land cover classes in tidal creek watersheds to reduce the negative impacts to populations of this important species. Future research should explore the relationship between imperviousness and salinity fluctuations in tidal creeks to better understand how changing land cover influences water chemistry and ultimately the demographics of juvenile blue crabs.

Movements of juvenile barramundi, Lates calcarifer (Bloch), in north-eastern Queensland

1988 ◽  
Vol 39 (1) ◽  
pp. 117 ◽  
Author(s):  
DJ Russell ◽  
RN Garrett
Keyword(s):  
Average Distance ◽  
Juvenile Fish ◽  
Tidal Creeks ◽  
Lates Calcarifer ◽  
Coastal Habitats ◽  
Coastal Bays ◽  
North Eastern ◽  
Young Of The Year ◽  
Trinity Bay

Movements of juvenile barramundi resident in tidal creeks of two north-eastern Queensland coastal bays were determined using tag and recapture techniques. In a 3-year period from 1978, 1268 mainly young- of-the-year barramundi were tagged and 213 (17%) recaptured. Most fish were recaptured at the original tagging location, with only 32 (2.5% of all fish tagged) caught away from the tidal creeks where they were released. Marked fish continued to be recaptured within the tidal creeks until they were about 1 year old. Barramundi of this age moved out into the main estuary and dispersed into adjacent streams and coastal habitats. After leaving the tidal creeks, barramundi tagged in Trinity Bay moved an average distance of 7.6 km, whereas those tagged in Rockingham Bay moved an average of 23 km. Factors which may limit the movements of these juvenile fish are discussed.

scholarly journals Population Structure of the Blue Crab Callinectes sapidus in the Maryland Coastal Bays

2020 ◽  
Vol 39 (3) ◽  
Author(s):  
Kristen A. Lycett ◽  
Jeffrey D. Shields ◽  
J. Sook Chung ◽  
Joseph S. Pitula
Keyword(s):  
Population Structure ◽  
Blue Crab ◽  
Callinectes Sapidus ◽  
Coastal Bays ◽  
Maryland Coastal Bays

scholarly journals Antimicrobial and Genetic Profiles of Vibrio vulnificus and Vibrio parahaemolyticus Isolated From the Maryland Coastal Bays, United States

2021 ◽  
Vol 12 ◽  
Author(s):  
Ligia V. da Silva ◽  
Sylvia Ossai ◽  
Paulinus Chigbu ◽  
Salina Parveen
Keyword(s):  
Genetic Diversity ◽  
Blue Crab ◽  
Pathogenic Bacteria ◽  
Vibrio Vulnificus ◽  
Multiple Drug Resistance ◽  
Health Concern ◽  
Multiple Drug ◽  
Coastal Bays ◽  
Maryland Coastal Bays ◽  
Genetic Profiles

Vibrio vulnificus and V. parahaemolyticus, found naturally in marine and estuarine environments, are the leading cause of seafood associated gastrointestinal illness and death. Consumption of improperly cooked crabs and handling of live crabs are potential routes of exposure to pathogenic bacteria such as V. vulnificus and V. parahaemolyticus. Little information is available on serotype genetic and antimicrobial profiles of V. vulnificus and V. parahaemolyticus recovered from Maryland estuaries. The aim of the present study was to determine the serotype of V. parahaemolyticus, evaluate antimicrobial susceptibility and genetic profiles of V. vulnificus and V. parahaemolyticus isolated from water and blue crab (Callinectes sapidus) samples collected from the Maryland Coastal Bays. One hundred and fifty (150) PCR confirmed V. parahaemolyticus including 52 tdh+ (pathogenic) and 129 V. vulnificus strains were tested for susceptibility to twenty (20) different antibiotics chosen by clinical usage for Vibrio species. The O serogroups were determined using an agglutination test with V. parahaemolyticus antisera. Pulsed-field gel electrophoresis (PFGE) was used for molecular subtyping to investigate the genetic diversity among tested strains. The most prevalent serotypes were O5 (33.3%), O3 (18.7%) and O1 (14.7%). More than 41% of all tested Vibrio isolates were resistant to three or more antibiotics. Cephalothin showed the highest resistance (42% and 61%), followed by cefoxitin (42% and 31%) and ceftazidime (36% and 29%) for V. vulnificus and V. parahaemolyticus, respectively. Most strains (99–100%) were susceptible to ampicillin/sulbactam, levofloxacin, piperacillin, piperacillin/tazobactam, and tetracycline. Fifty percent (50%) of the cephalothin resistant strains were crab isolates. Vibrio vulnificus and V. parahaemolyticus isolates demonstrated a high genetic diversity and 31% of V. vulnificus and 16% of V. parahaemolyticus strains were PFGE untypeable. No correlations were found between the V. parahaemolyticus serotype, pathogenicity, genetic and antimicrobial resistance profiles of both species of Vibrio. The observed high multiple drug resistance of V. vulnificus and V. parahaemolyticus from blue crab and its environment is of public health concern. Therefore, there is a need for frequent antibiotic sensitivity surveillance for Vibrio spp.

Foraging behavior of an estuarine predator, the blue crab Callinectes sapidus in a patchy environment

Ecography ◽  
2000 ◽  
Vol 23 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Mary E. Clark ◽  
Thomas G. Wolcott ◽  
Donna L. Wolcott ◽  
Anson H. Hines
Keyword(s):  
Foraging Behavior ◽  
Blue Crab ◽  
Callinectes Sapidus ◽  
Patchy Environment

Climate Change Stressors Threaten Blue Crab Populations

2018 ◽  
Author(s):  
Stephen Tomasetti ◽  
Christopher Gobler
Keyword(s):  
Climate Change ◽  
Blue Crab
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