scholarly journals First record of the blue crab Callinectes sapidus (Crustacea, Decapoda, Portunidae), a non-indigenous species in the central/southern Tyrrhenian Sea

2020 ◽  
Vol 61 (1) ◽  
pp. 101-106
Author(s):  
Carlo Pipitone ◽  
Arturo Zenone ◽  
Fabio Badalamenti ◽  
Giovanni D'Anna
Keyword(s):  
Blue Crab ◽  
Callinectes Sapidus ◽  
First Record ◽  
Shallow Waters ◽  
Indigenous Species ◽  
Tyrrhenian Sea ◽  
Blue Crabs ◽  
Sandy Bottom ◽  
Southern Tyrrhenian Sea ◽  
Non Indigenous Species

Four individuals of the non-indigenous blue crab, Callinectes sapidus Rathbun, 1896 (Crustacea, Decapoda, Portunidae) were collected during commercial trammel net operations in fall 2019 and winter 2020 along the coast of NW Sicily. The crabs were collected in very shallow waters on a sandy bottom close to the coast. Although blue crabs are now widespread along most eastern, western and northern Mediterranean coasts, this is the first record of this species from the central and southern Tyrrhenian Sea

scholarly journals The return of the Blue Crab, Callinectes sapidus Rathbun, 1896, after 70 years from its first appearance in the Gulf of Trieste, northern Adriatic Sea, Italy (Decapoda: Portunidae)

Check List ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 2006 ◽  
Author(s):  
Chiara Manfrin ◽  
Giovanni Comisso ◽  
Andrea Dall’Asta ◽  
Nicola Bettoso ◽  
J. Sook Chung
Keyword(s):  
Blue Crab ◽  
Adriatic Sea ◽  
Callinectes Sapidus ◽  
First Record ◽  
Blue Crabs ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Gulf Of Trieste

Since August 2015, an increasing number of Blue Crabs, Callinectes sapidus Rathbun, 1896, have been reported in the Marano and Grado Lagoon, Gulf of Trieste, in the northern Adriatic Sea. This species is not a new introduction and in fact the first record of C. sapidus in Italy and the entire Adriatic Sea dates back to 1949 in the Grado Lagoon. Interestingly, no other records of C. sapidus have been reported since the first record. Here, we note the re-appearance of C. sapidus in the Gulf of Trieste.

scholarly journals First Record of the Alien Species Procambarus virginalis Lyko, 2017 in Fresh Waters of Sardinia and Insight into Its Genetic Variability

Life ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 606
Author(s):  
Daria Sanna ◽  
Ilenia Azzena ◽  
Fabio Scarpa ◽  
Piero Cossu ◽  
Angela Pira ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Alien Species ◽  
Procambarus Clarkii ◽  
Mitochondrial Gene ◽  
First Record ◽  
Indigenous Species ◽  
Fresh Waters ◽  
Mediterranean Island ◽  
Marbled Crayfish ◽  
Non Indigenous Species

In the fresh waters of Sardinia (Italy), the non-indigenous crayfish species Procambarus clarkii has been reported from 2005, but, starting from 2019, there have been several reports of a new non-indigenous crayfish in southern and central areas of this Mediterranean island, and its morphology suggests that this species may be the marbled crayfish Procambarus virginalis. Forty-seven individuals of this putative species were analyzed, using the mitochondrial gene Cytochrome c Oxidase subunit I as molecular marker to identify this crayfish and investigate the level of genetic variability within the recently established population. Phylogenetic and phylogeographic analyses were carried out on a dataset including sequences from the Sardinian individuals and from all congenerics available in GenBank. Results showed that the new Sardinian crayfish belong to the species P. virginalis. All the sequences belonging to P. virginalis from European countries are identical, with only few exceptions found among Sardinian individuals. In conclusion, this paper highlights the occurrence of a new further alien species in the Sardinian fresh waters, which are already characterized by the high presence of non-indigenous species.

scholarly journals Scientific collaboration for early detection of invaders results in a significant update on estimated range: lessons from Stenothoe georgiana Bynum & Fox 1977

2020 ◽  
Author(s):  
GEMMA MARTÍNEZ-LAIZ ◽  
MACARENA ROS ◽  
JOSÉ MANUEL GUERRA-GARCÍA ◽  
AGNESE MARCHINI ◽  
VICTORIA FERNÁNDEZ-GONZÁLEZ ◽  
...  
Keyword(s):  
Early Detection ◽  
First Record ◽  
Western Mediterranean ◽  
Mediterranean Coast ◽  
Amphipod Species ◽  
Indigenous Species ◽  
Scientific Cooperation ◽  
Vectors Of Introduction ◽  
Non Indigenous Species ◽  
Effective Spread

Detection of new non-indigenous species is often delayed when taxonomically challenging taxa are involved, such as small-sized marine organisms. The present study highlights the relevance of scientific cooperation in the early detection of the invader amphipod Stenothoe georgiana. Originally described from North Carolina (USA), the species was recently found in Chile and the Western Mediterranean. Here, we provide the first record of the species in Macaronesia, Atlantic coasts of continental Europe, North Africa and Australia, and extend its known distribution along the Mediterranean coast. Just like other small crustaceans, shipping (including recreational boating) and aquaculture are probably the main vectors of introduction and secondary spread for this amphipod species. This case of S. georgiana sheds light on the importance of promoting taxonomical knowledge, and building multidisciplinary expertise networks that ensure an effective spread of alien species information. We also encourage the implementation of standardized monitoring methodologies to facilitate early detection of small mobile invaders. 

scholarly journals First Record of Colonial Ascidian, Botrylloides diegensis Ritter and Forsyth, 1917 (Ascidiacea, Stolidobranchia, Styelidae), in South Korea

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2164
Author(s):  
Taekjun Lee ◽  
Sook Shin
Keyword(s):  
South Korea ◽  
First Record ◽  
Artificial Substrates ◽  
Indigenous Species ◽  
Colonial Ascidian ◽  
Mitochondrial Coi ◽  
Intraspecific Variations ◽  
Single Clade ◽  
Non Indigenous Species ◽  
Botrylloides Diegensis

Botrylloides species are important members of the fouling community colonizing artificial substrates in harbors and marinas. During monitoring in 2017–2020 of non-indigenous species in Korea, one colonial ascidian species was distinctly different from other native colonial ascidians, such as B. violaceus and Botryllus schlosseri, in South Korea. This species was identified as B. diegensis. DNA barcodes with mitochondrial COI were used to identify one-toned and two-toned colonies of B. diegensis. Intraspecific variations between Korean and other regions of B. diegensis from the NCBI ranged from 0.0% to 1.3%. The Korean B. diegensis was clearly distinct from other species of Botrylloides at 15.8–24.2%. In phylogenetic analysis results, Korean B. diegensis was established as a single clade with other regions of B. diegensis and was clearly distinct from Korean B. violaceus. After reviewing previous monitoring data, it was found that two-toned B. diegensis was already found in six harbors by July 2017. It has now spread into 14 harbors along the coastal line of South Korea. This means that B. diegensis might have been introduced to South Korea between 1999 and 2016.

scholarly journals Effects of crude oil on survival and development in embryonated eggs in Callinectes sapidus Rathbun, 1896 (Decapoda, Portunidae)

2018 ◽  
Author(s):  
Kelsie L. Kelly ◽  
Caz M. Taylor
Keyword(s):  
Crude Oil ◽  
Blue Crab ◽  
Oil Spill ◽  
Callinectes Sapidus ◽  
Deepwater Horizon ◽  
The United States ◽  
Spawning Season ◽  
Blue Crabs ◽  
Deepwater Horizon Oil Spill ◽  
Important Species

Blue crabs, Callinectes sapidus Rathbun, 1896, are ubiquitous along the Atlantic and Gulf coasts of the United States. These organisms play an integral role in the ecosystems of the Gulf of Mexico (GOM), where not only are they a keystone species, but are also socioeconomically important. The survival of embryonated eggs is necessary to ensure adequate recruitment into the next generation. Because the 2010 Deepwater Horizon oil spill (DWH) occurred during the peak of the blue crab spawning season, the incident likely impacted blue crab embryos. In order to assess the effect of oil on embryonic growth and development, we collected embryonated eggs from seven different female blue crabs from the GOM throughout the spawning season and exposed them to an oil concentration of 500 ppb (the approximate concentration of oil at the surface water near the site of the Deepwater Horizon oil rig). Exposure to oil at this concentration caused a significantly larger proportion of prezoeae versus zoeae to hatch from embryonated eggs in experiments lasting longer than 4 days. Exposure to oil did not significantly affect overall survival or development rate. The prezoeal stage is a little-studied stage of blue crab development. Though it may or may not be a normal stage of development, this stage has been found to occur in suboptimal conditions and has lower survival than zoeal stages. The larger proportion of prezoeae following prolonged exposure to oil thus indicates that crude oil at concentrations likely to be experienced by crabs after the DWH spill negatively impacted the development of blue crab embryos. In addition to providing insight into the effects of the Deepwater Horizon oil spill, this study sheds light on embryonic development in blue crabs, a critical, but poorly investigated phase of this important species’ life cycle.

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.

First record of the non-indigenous isopods Paracerceis sculpta (Holmes, 1904) and Sphaeroma walkeri Stebbing, 1905 (Isopoda, Sphaeromatidae) for Madeira Island

Crustaceana ◽  
2017 ◽  
Vol 90 (14) ◽  
pp. 1747-1764 ◽  
Author(s):  
Patrício Ramalhosa ◽  
Alfonso Nebra ◽  
Ignacio Gestoso ◽  
João Canning-Clode
Keyword(s):  
Marine Invertebrates ◽  
First Record ◽  
Indigenous Species ◽  
Northern Indian Ocean ◽  
Madeira Island ◽  
Eastern Atlantic Ocean ◽  
The Pacific ◽  
North Eastern ◽  
Island System ◽  
Non Indigenous Species

While exploring the presence of non-indigenous fouling species colonizing settlement plates deployed in local marinas in Madeira Island (north-eastern Atlantic Ocean), two non-indigenous species (NIS) of free-swimming crustaceans,Paracerceis sculpta(Holmes, 1904) andSphaeroma walkeriStebbing, 1905 (Isopoda: Sphaeromatidae), were detected.Paracerceis sculptais native to the Pacific Coast of North and Central America and has been introduced into many other regions worldwide.Sphaeroma walkeriis native to the northern Indian Ocean and nowadays is considered one of the most widely ship-transported species globally. Both species were collected in the marina of Funchal, Madeira Island, Portugal, during monitoring surveys in 2015. Moreover, several specimens ofS. walkeriwere also found in a foreign recreational yacht hull, during a dry dock inspection. These findings suggest that hull fouling is a significant vector for the introductions of marine invertebrates into the Madeira island system.

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