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41 results for “Callinectes”
New records of the Atlantic blue crab Callinectes sapidus Rathbun, 1896 in European waters
<p>New records of the Atlantic blue crab <em>Callinectes sapidus</em> Rathbun, 1896 in European waters (between 2019 and 2022).</p>
Fig. 2 in Short communication On the occurrence of the invasive Atlantic blue crab Callinectes sapidus Rathbun 1896 (Decapoda: Brachyura: Portunidae) in Sicilian inland waters
Fig. 2 - Neighbor-Joining tree based on a 659-bp long fragment of the mtDNA COI gene of Callinectes sapidus using Kimura-2- parameter distance model. The different clades are coloured according to their lineage as described by Windsor et al., 2019: clear blue, Lineage 1 (northwestern Atlantic and Gulf of Mexico); pink, Lineage 2 (Caribbean region); orange, Lineage 3 (Brazil). Novel sequences are reported in bold. The analysed specimens are reported using the GenBank® Accession numbers listed also in Table S1. / Albero Neighbor-Joining basato su un frammento lungo 659-pb del gene mtDNA COI di Callinectes sapidus, utilizzando il modello di distanza "Kimura-2-parameter". I diversi cladi sono colorati secondo il loro lignaggio come descritto da Windsor et al., 2019: blu chiaro, "Lineage 1" (Atlantico nord-occidentale e Golfo del Messico); rosa, "Lineage 2" (regione caraibica); arancione, "Lineage 3" (Brasile). Le sequenze nuove sono riportate in grassetto. Gli esemplari analizzati sono riportati utilizzando i numeri di accesso Gen- Bank® elencati anche nella Tabella S1.
Fig. 1 in Short communication On the occurrence of the invasive Atlantic blue crab Callinectes sapidus Rathbun 1896 (Decapoda: Brachyura: Portunidae) in Sicilian inland waters
Fig. 1 - Location of the sampling sites. Red circles indicate the new Sicilian sites where Callinectes sapidus (inbox) was sampled; 1) Imera Meridionale river. 2) Irminio river. White circles indicate previous records of the species (see Mancinelli et al., 2021 for further information). / Localizzazione dei siti campionati. I cerchi rossi indicano i nuovi siti siciliani dove è stato campionato Callinectes sapidus (nel riquadro); 1) fiume Imera Meridionale. 2) fiume Irminio. I cerchi bianchi indicano precedenti record della specie (vedi Mancinelli et al., 2021 per ulteriori informazioni).
Figure 1 in First record of the Atlantic blue crab Callinectes sapidus (Crustacea: Brachyura: Portunidae) in the Segura River mouth (Spain, southwestern Mediterranean Sea)
Figure 1. Locations and years (black stars) of previous records of blue crab in the Mediterranean and Black Sea. (Marina di Grado 1949: Mizzan, 1993; Hadera 1955: Holthuis and Gottlieb, 1955; Akyatan 1961: Holthuis, 1961; Porto Lagos 1965: Kinzelbach, 1965; Ston 2008: Onofri et al., 2008; Lesina 2008: Florio et al., 2008; Patok 2009: Beqiraj and Kashta, 2010; Yumurtalık 2010: Tureli Bilen and Yesilyurt, 2014; Silvi 2011: Castriota et al., 2012; Montecristo 2013 and Metaponto 2013: Stasolla and Innocenti, 2014; San Carlos de la Ràpita 2012: Castejón and Guerao, 2013; Akçakoca 2013 and Ereğli 2013: Yağlıoğlu et al., 2014; Gandía 2014: https:// cienciagandia.webs.upv.es/en/2015/07/; Sacca di Goro 2015: Manfrin, 2015). White stars indicate records of C. sapidus in the Black Sea from 1968 to 2012 (see references in Yağlıoğlu et al., 2014). Black circle shows the location of the Segura River mouth (SE Spain) where C. sapidus was registered (present work).
Figure 2. Callinectes sapidus Rathbun, 1896 in First record of the Atlantic blue crab Callinectes sapidus (Crustacea: Brachyura: Portunidae) in the Segura River mouth (Spain, southwestern Mediterranean Sea)
Figure 2. Callinectes sapidus Rathbun, 1896, adult male (A: dorsal view; B: ventral view) from the Segura River, SE Spain.
Fig. 1 in Short Communication Further evidence of the occurrence of the Atlantic blue crab Callinectes sapidus (Rathbun 1896) (Crustacea: Decapoda: Portunidae) along the central Tyrrhenian coast
Fig. 1 - Map of the study area (Latium, Tyrrhenian central Italy) with record of Atlantic blue crab Callinectes sapidus (Rathbun 1896). Black dots: original data (numbers); white dots: indirect data (letters). See Table 1 for details. / Mappa dell'area di studio (Lazio, Italia centrale tirrenica) con segnalazioni del granchio reale blu Callinectes sapidus (Rathbun 1896). Cerchi neri: dati originali (numeri); cerchi bianchi: dati indiretti (lettere). Si veda Tabella 1 per dettagli.
Fig. 2 in Short Communication Further evidence of the occurrence of the Atlantic blue crab Callinectes sapidus (Rathbun 1896) (Crustacea: Decapoda: Portunidae) along the central Tyrrhenian coast
Fig. 2 - Specimens of Atlantic blue crab Callinectes sapidus (Rathbun 1896) caught in the Torre Flavia wetland. CW (carapace width) and CL (carapace length) measurements (in mm): 1: CW: 15.7; CL: 7.3; 2: CW: 15.1; CL: 7; 3: CW: 15.3; CL: 7; 4: CW: 15: CL: 7; 5: CW: 15; CL: 6.9). / Esemplari di granchio reale blu Callinectes sapidus (Rathbun 1896) catturati presso la Palude di Torre Flavia. Misurazioni di CW (ampiezza del carapace) e CL (lunghezza del carapace): 1: CW: 15,7; CL: 7,3; 2: CW: 15,1; CL: 7; 3: CW: 15,3; CL: 7; 4: CW: 15: CL: 7; 5: CW: 15; CL: 6,9).
Fig. 2. Callinectes sapidus Rathbun, 1896 in A documented checklist of the Crustacea (Stomatopoda, Decapoda) of the southern Guianas (Guyana, Suriname, French Guiana, Brazil Amapá)
Fig. 2. Callinectes sapidus Rathbun, 1896, illustrated by Young (1900: 187, pl. III), reported from British and French Guianas, as Callinectes diacanthus (Latreille, 1825), a synonym.
Blue crab, Callinectes sapidus, density and size in a salt marsh at low tide on the Coast of Virginia, Sept. 2021
While deconstructing a caging experiment at low tide in September 2021, researchers (Serina Wittyngham, Leah Scott, Andrew Nemeth, Emily Goetz, Esther Harper-Smith, David Johnson, and Cora Johnston) noticed blue crabs, Callinectes sapidus, ambushing fiddler crabs, Minuca (=Uca) pugnax, and purple marsh crabs, Sesarma reticulatum, from small, muddy pits in the marsh in Painter, Virginia, at low tide. On 28 Sept 2021, David returned to the marsh to estimate blue-crab density in the tall-form Spartina alterniflora (low marsh), the Sesarma-denuded zones and the short-form S. alterniflora (high marsh) zones by haphazardly tossing 15 1-m2 quadrats along a 200 m transect that crossed 6 creekheads. He also measured carapace width and the corresponding pit width and depth in which the crabs were found for up to 15 hapazardly encountered crabs in each of these zones (only 1 found in SSA). Sex was also noted. Surveys were conducted at low tide.
Microplastic contamination in Corpus Christi Bay blue crabs, Callinectes sapidus
<p>Microplastic pollution has been observed in marine environments around the world and has the potential to negatively impact marine organisms when ingested. One organism of particular concern is the blue crab, <i>Callinectes sapidus</i>, whose feeding strategies increase their likelihood of exposure to plastic pollution. To assess microplastic contamination in blue crabs, 39 individuals were collected from Corpus Christi Bay, TX and processed using a hydrogen-peroxide based tissue destruction method followed by confirmation using micro-attenuated total reflectance Fourier transform infrared spectroscopy (µ-FTIR). From the 39 blue crabs sampled, 28 fully synthetic fragments and fibers and 24 semi-synthetic fibers were found within their stomachs. After correcting for possible contamination, 36% of collected blue crabs were estimated to contain 20 synthetic fragments and fibers and 14 semi-synthetic fibers (0.87 items crab<sup>-1</sup>). This study shows that blue crabs ingest microplastic items in Corpus Christi, TX and populations in other locations likely face similar risks.</p>
Data of the effects of temperature and dissolved oxygen on thermal biology and aerobic metabolism of tropical Callinectes sapidus crabs
<p>This file contains raw data on the effects of temperature and dissolved oxygen on several aspects of the physiology of the Callinectes sapidus tropical population. </p> <p>I. Data on thermal biology includes the effects of acclimation temperatures on 1) Preferred temperature; 2) Critical thermal minima and maxima; 3) Thermal safety margin (TSM); Thermal metabolic scope (TMS).</p> <p>II. Data on the combined effects of temperature and dissolved oxygen on routine oxygen consumption of C. sapidus. </p> <p>Those data was sent as a scientific paper to the Journal of Thermal Biology. </p> <p> </p>
Microplastic contamination in Corpus Christi Bay blue crabs, Callinectes sapidus
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Near-complete sequence of a novel reovirus genome identified from Callinectes sapidus
<p>The Atlantic blue crab, <i>Callinectes sapidus</i>,<i> </i>is an estuarine keystone species that functions as both predator and prey in food webs and supports a multi-million dollar fishery along the western Atlantic coast from the US mid-Atlantic to southern Brazil. Throughout their range, blue crabs are host to viral, bacterial, fungal, protozoan, and metazoan pathogens. <span class="fontstyle01"><span>Reoviruses are non-enveloped icosahedral viruses with genomes comprised of 9 to 12 segments of linear double-stranded RNA (dsRNA). They have been found in diverse host species including brachyuran crustaceans. </span></span>This work describes the sequence of a novel reovirus genome, discovered in <i>Callinectes sapidus</i>. The <span class="fontstyle01"><span>double-stranded RNA</span></span> genome of CsRV2 consists of 12 segments that encode 13 putative proteins. High nucleotide sequence identity with <span class="fontstyle01"><span><i>Eriocheir sinensis</i></span></span><span class="fontstyle01"><span> Reovirus 905 </span></span>revealed this virus belongs to <i>Cardoreovirus </i>within the <i>Reoviridae </i>family.</p>
Data from: Evaluation of Blue Crab, Callinectes sapidus, megalopal settlement and condition during the Deepwater Horizon oil spill
The Blue Crab, Callinectes sapidus, is a commercially, culturally, and ecologically significant species in the Gulf of Mexico (GOM), whose offshore stages were likely impacted by the Deepwater Horizon oil spill (DWH). To test for DWH effects and to better understand the planktonic ecology of this species, we monitored Callinectes spp. megalopal settlement and condition at sites within and outside of the spill extent during and one year after the DWH. We tested for DWH effects by comparing 2010 settlement against baseline data available for two sites, and by testing for differences in settlement and condition inside and outside of the spill extent. We also developed time series models to better understand natural drivers of daily settlement variation (seasonal and lunar trends, hydrodynamics, wind) during 2010 and 2011. Overall, we found that neither megalopal settlement nor body weight were significantly reduced at oiled sites, but that high unexplained variation and low statistical power made detection of even large effects unlikely. Time series models revealed remarkably consistent and relatively strong seasonal and lunar trends within sites (explaining on average 28% and 9% of variation, respectively), while wind and hydrodynamic effects were weak (1–5% variation explained) and variable among sites. This study provides insights into DWH impacts as well as the natural drivers of Callinectes spp. megalopal settlement across the northern GOM.
Callinectes sapidus decontaminated FSCR
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Figure 2. Callinectes bellicosus, zoea 1 in Description of laboratory-bred first zoea of Callinectes bellicosus Stimpson, 1859 (Crustacea, Portunidae)
Figure 2. Callinectes bellicosus, zoea 1. (a), maxillule; (b), maxilla; (c), first maxilliped; (d), second maxilliped; (e), pleon.
Callinectes sapidus decontaminated gx
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FIGURA 1 in Maturidade Sexual Em Callinectes Ornatus Ordway, 1863 (Crustacea: Decapoda: Portunidae) No Litoral De Ilhéus, Ba, Brasil
FIGURA 1: Área de estudo na região de Ilhéus (BA), com indicação dos locais de coleta (São Domingos, Pontal e Olivença).
FIGURA 2 in Maturidade Sexual Em Callinectes Ornatus Ordway, 1863 (Crustacea: Decapoda: Portunidae) No Litoral De Ilhéus, Ba, Brasil
FIGURA 2: Curvas de maturação sexual de Callinectes ornatus no litoral de Ilhéus (BA), com base na morfologia (A, machos; e B, fêmeas) e fisiologia (C, machos; e D, fêmeas).
FIGURE 10. Callinectes ornatus Ordway, 1863 in Juvenile development of Callinectes ornatus Ordway, 1863 (Crustacea: Decapoda: Portunidae), from megalopae obtained in the neuston
FIGURE 10. Callinectes ornatus Ordway, 1863. Female pleopods (Pl2 to Pl5): juvenile IX (JIX); juvenile X (JX). Scales: JIX = 0.2 mm; JX = 0.4 mm.
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