Blue Crab (Callinectes sapidus) Population Structure in Southern New England Tidal Rivers: Patterns of Shallow-Water, Unvegetated Habitat Use and Quality

2020 ◽  
Author(s):  
David L. Taylor ◽  
Molly M. Fehon
Keyword(s):  
Population Structure ◽  
Habitat Use ◽  
New England ◽  
Shallow Water ◽  
Blue Crab ◽  
Callinectes Sapidus ◽  
Southern New England ◽  
Tidal Rivers

Abundance and population structure of the blue crab Callinectes sapidus (Decapoda, Portunidae) in Thermaikos Gulf (Methoni Bay), northern Aegean Sea

Crustaceana ◽  
2018 ◽  
Vol 91 (6) ◽  
pp. 641-657 ◽  
Author(s):  
Kosmas Kevrekidis ◽  
Chryssanthi Antoniadou
Keyword(s):  
Population Structure ◽  
Blue Crab ◽  
Callinectes Sapidus ◽  
Carapace Width ◽  
Seawater Temperature ◽  
Aegean Sea ◽  
Cold Season ◽  
Mean Size ◽  
Northern Aegean Sea ◽  
Fyke Nets

Abstract The blue crab Callinectes sapidus is an alien decapod established in the Mediterranean Sea. Since 2007, increased abundance has been reported from the northern Aegean Sea sustaining local scale fishery. The present work aims to assess the abundance and population structure of C. sapidus in Thermaikos Gulf using fyke nets. Population abundance, estimated as CPUE, exhibited strong temporal variability with decreased values in the cold season; this pattern was correlated with seawater temperature. Females exhibited also spatial differences with increased abundance close to the Aliakmon estuary. In total, 543 individuals were measured for carapace width. Males prevailed in the population; however, mean size was similar between sexes. Larger individuals were caught from deeper waters and the estuarine areas, whereas mean size decreased temporally. The fyke nets used proved to be size-selective, thus preventing fisheries mortality for juveniles. However, recurrent monitoring is necessary for a sustainable management of blue crab fisheries in the gulf.

Habitat use and movements of common eiders wintering in southern New England

2017 ◽  
Vol 81 (7) ◽  
pp. 1276-1286 ◽  
Author(s):  
Joshua M. Beuth ◽  
Scott R. Mcwilliams ◽  
Peter W.C. Paton ◽  
Jason E. Osenkowski
Keyword(s):  
Habitat Use ◽  
New England ◽  
Southern New England ◽  
Common Eiders

Habitat use and selection of black scoters in southern New England and siting of offshore wind energy facilities

2014 ◽  
Vol 78 (4) ◽  
pp. 645-656 ◽  
Author(s):  
Pamela H. Loring ◽  
Peter W.C. Paton ◽  
Jason E. Osenkowski ◽  
Scott G. Gilliland ◽  
Jean-Pierre L. Savard ◽  
...  
Keyword(s):  
Habitat Use ◽  
Wind Energy ◽  
New England ◽  
Offshore Wind ◽  
Offshore Wind Energy ◽  
Southern New England ◽  
Selection Of

scholarly journals The Northwest Atlantic deep-sea red crab (Chaceon quinquedens) population before and after the onset of harvesting

2008 ◽  
Vol 65 (6) ◽  
pp. 862-872 ◽  
Author(s):  
Richard A. Wahle ◽  
Charlene E. Bergeron ◽  
Antonie S. Chute ◽  
Larry D. Jacobson ◽  
Yong Chen
Keyword(s):  
Population Structure ◽  
Adverse Effects ◽  
New England ◽  
Deep Sea ◽  
Carapace Width ◽  
Biological Information ◽  
Trawl Survey ◽  
Northwest Atlantic ◽  
Southern New England ◽  
Before And After

Abstract Wahle, R. A., Bergeron, C. E., Chute, A. S., Jacobson, L. D., and Chen, Y. 2008. The Northwest Atlantic deep-sea red crab (Chaceon quinquedens) population before and after the onset of harvesting. – ICES Journal of Marine Science, 65: 862–872. The population structure of deep-sea red crab (Chaceon quinquedens) in a nearly unexploited state is compared with its condition three decades later after more than a decade of sustained harvesting. Our study is based on a camera and net trawl survey conducted in 1974, which we repeated between 2003 and 2005 on the southern New England shelf break. Although the overall biomass of red crabs was estimated to be higher than in 1974, the abundance of large males, which are targeted by the fishery, was considerably lower. In particular, the biomass of large males (≥114 mm carapace width), considered in 1974 to be marketable, declined by 42%. Declines were most evident at depths and regions most accessible to the fishing fleet based in southern New England. With the change in fishery selectivity towards smaller male crabs, the abundance of currently harvestable crabs is about equal to 1974 levels. No declines were observed in the biomass of female and smaller male crabs not targeted by the fishery. Indeed, the abundance of juveniles appears considerably higher than in 1974. Perhaps, adverse effects on reproduction attributable to a reduction in the numbers of large males may be a consequence of fishing, but fishery impacts and productivity are difficult to assess because key biological information is lacking.

scholarly journals A global occurrence database of the Atlantic blue crab Callinectes sapidus

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Giorgio Mancinelli ◽  
Roberta Bardelli ◽  
Argyro Zenetos
Keyword(s):  
New England ◽  
Blue Crab ◽  
Callinectes Sapidus ◽  
Western Atlantic ◽  
Online Databases ◽  
Distribution Ranges ◽  
Severe Reduction ◽  
Technical Validation ◽  
Validation Procedure ◽  
Northward Expansion

AbstractThe Atlantic blue crab Callinectes sapidus is a portunid native to the western Atlantic, from New England to Uruguay. The species was introduced in Europe in 1901 where it has become invasive; additionally, a significant northward expansion has been emphasized in its native range. Here we present a harmonized global compilation of C. sapidus occurrences from native and non-native distribution ranges derived from online databases (GBIF, BISON, OBIS, and iNaturalist) as well as from unpublished and published sources. The dataset consists of 40,388 geo-referenced occurrences, 39,824 from native and 564 from non-native ranges, recorded in 53 countries. The implementation of quality controls imposed a severe reduction, in particular from online databases, of the records selected for inclusion in the dataset. In addition, a technical validation procedure was used to flag entries showing identical coordinates but different year of record, in-land occurrences and those located close to the coast. Similarly, a flagging system identified entries outside the known distribution of the species, or associated with unsuccessful introductions.

Sign in / Sign up

Export Citation Format

Share Document