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Wyświetlanie 1-10 z 38
Tytuł:
The Chinese mitten crab Eriocheir sinensis (Decapoda: Grapsidae) from Polish waters
Autorzy:
Normant, M.
Wiszniewska, A.
Szaniawska, A.
Powiązania:
https://bibliotekanauki.pl/articles/47486.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Decapoda
Odra estuary
Eriocheir sinensis
Baltic Sea
Polish water
Chinese mitten crab
crab
Grapsidae
Opis:
The Chinese mitten crab Eriocheir sinensis Milne-Edwards, 1854 is a newcomer to the Baltic Sea. Previous studies have shown that since the 1940s single large specimens of this species have been caught annually in Polish waters. The invasion of the Chinese mitten crab has been reported from many European countries, including Poland, where it is especially abundant in the Odra Estuary. Of 186 specimens captured in Lake Dąbie in August 1998, 45% were females and 55% males. The carapace width of these crabs varied between 53 and 88 mm and the average wet weight was 169±45.3 g.
Źródło:
Oceanologia; 2000, 42, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Chinese mitten crab Eriocheir sinensis - an immigrant from Asia in the Gulf of Gdańsk
Autorzy:
Normant, M.
Chrobak, M.
Skora, K.
Powiązania:
https://bibliotekanauki.pl/articles/48447.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
crustacean
coastal water
Eriocheir sinensis
Baltic Sea
Gdansk Gulf
immigrant
Asia
exotic species
Chinese mitten crab
crab
Opis:
The present paper reports the occurrence of the Chinese mitten crab Eriocheir sinensis H.M ilne Edwards, 1854 in the coastal waters of the Gulf of Gdańsk, and attempts an initial characterization of the crabs occurring in this area.
Źródło:
Oceanologia; 2002, 44, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epibiota associated with setae on Chinese mitten crab claws (Eriocheir sinensis H. Milne-Edwards, 1853): a first record
Autorzy:
Normant, M.
Korthals, J.
Szaniawska, A.
Powiązania:
https://bibliotekanauki.pl/articles/47515.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
claw
new habitat
fresh water
Eriocheir sinensis
brackish water
animal morphology
Chinese mitten crab
crab
Opis:
Eriocheir sinensis H. Milne-Edwards, 1853 is a non-native species found in European waters. Analyses of mitten crabs caught in brackish waters (Gulf of Gdańsk, Poland) and in freshwater (Havel River, Germany) have indicated that numerous epibionts (possibly temporary) inhabit the dense setal mats that cover the chelipeds. Of the 950 associates found on 22 crabs collected from brackish water, the most abundant were Nematoda (82.3%), followed by Bivalvia (10.3%), Crustacea (5.6%), Oligochaeta (1.2%) and Gastropoda (0.6%). In comparison, 1280 specimens (Chironomidae – 67.6% and Halacaridae – 32.4%), were identified from 13 crabs collected in freshwater. As this crab can migrate long distances, it is capable of transporting native and non-native species via its mittened claws to new habitats.
Źródło:
Oceanologia; 2007, 49, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Silurian synziphosurine horseshoe crab Pasternakevia revisited
Autorzy:
Krzeminski, W.
Krzeminska, E.
Wojciechowski, D.
Powiązania:
https://bibliotekanauki.pl/articles/20993.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Silurian
horseshoe crab
arthropod
Pasternakevia
paleontology
Arthropoda
Xiphosura
Bunodidae
phylogenesis
Ukraine
stratigraphy
Opis:
The synziphosurine horseshoe crab Pasternakevia was until now known only from a single specimen. Herein we describe three new specimens from the outcrop close to the type locality of monotypic P. podolica that show several features that were unknown or only assumed in this genus. These characters include: a smooth surface of the carapace; an opisthosoma composed of ten segments, the first one being a microtergite (strongly reduced first opisthosomal segment usually hidden under the carapace), two or three last segments fused into a metasoma, and the telson. Pasternakevia is included in Bunodidae due to a hypertrophied tergite 2, but it is linked to the Pseudoniscidae by the shape of the opisthosoma.
Źródło:
Acta Palaeontologica Polonica; 2010, 55, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Purification and characterization of antibacterial proteins from granular hemocytes of Indian mud crab, Scylla serrata
Autorzy:
Yedery, Roshan
Reddy, Kudumula
Powiązania:
https://bibliotekanauki.pl/articles/1040635.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
innate immunity
Scylla serrata
hemocytes
crab
antibacterial protein
Opis:
Marine invertebrates depend upon antimicrobial peptides (AMPs) as a major component of innate immunity, as they are rapidly synthesized and diffuse upon pathogen invasion. In this study, we report the identification and characterization of a 11 kDa antimicrobial protein, which we name SSAP (for Scylla serrata antimicrobial protein), from granular hemocytes of the mangrove crab S. serrata. The protein is highly similar to scygonadin, a male-specific AMP isolated from the ejaculatory duct of S. serrata. SSAP was isolated using various chromatographic techniques, viz. ion-exchange, ultra filtration and RP-HPLC, and demonstrated antibacterial activity against Gram positive and Gram negative bacteria. Full length mRNA encoding SSAP was amplified using a combination of RT-PCR and RACE. The nucleotide sequence revealed a full-length ORF of 381 bp coding for a preprotein of 126 amino acids comprising a signal peptide of 24 amino acids and a mature protein of 102 amino acids with a predicted mass of 11435 Da and pI of 5.70. Unlike scygonadin, SSAP is expressed in several tissues of both male and female crabs, as evidenced by RT-PCR, Northern and Western blot analyses. The study suggests that SSAP might be an isoform or a variant of scygonadin and might play an important role in regulating the immunity of the crab upon microbial infection.
Źródło:
Acta Biochimica Polonica; 2009, 56, 1; 71-82
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isolation and characterization of chitin from shells of the freshwater crab potamon algeriense
Autorzy:
Fadlaoui, Soufiane
El Asri, Ouahid
Mohammed, Lakrat
Sihame, Addou
Omari, Abdelouadoud
Melhaoui, Mohammed
Powiązania:
https://bibliotekanauki.pl/articles/1034352.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
Chitin
Potamon algeriense
chitosan
deacetylation
freshwater crab
Opis:
This work presents, for the first time, the extraction and characterization of chitin from the shell of the freshwater crab species Potamon algeriense with a standardized and revised chemical method. Chitin and chitosan were isolated following demineralization, deproteinization, decolouration (raw chitin), and deacetylation (chitosan). After boiling, drying, and grinding, 62.12% of the ground shell was obtained. A yield of 40.92% was obtained after demineralization of ground crab shell, while after the deproteinization process 8.74% was obtained. After decolourization, 8.27% of raw chitin was obtained, and the final amount of chitosan extracted from the crab shells was approximately 5.89%. We also characterized the isolated chitin by determining its physicochemical properties using X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA).
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2019, 24; 23-35
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sposób ruchu 6-nośnego robota kroczącego - Krab
The method of traffic 6-foot walking robot - Crab
Autorzy:
Filipek, P.
Śmiech, M.
Powiązania:
https://bibliotekanauki.pl/articles/252563.pdf
Data publikacji:
2013
Wydawca:
Instytut Naukowo-Wydawniczy TTS
Tematy:
robot kroczący
Krab
robot sześcionożny
sześcionóg
stepping robot
Crab
multi-legged robot
six-legged robot
hexapod
Opis:
W artykule przedstawiono projekt budowy 6-cio nożnego robota kroczącego - Krab. Każda z nóg robota jest teleskopowo wysuwana za pomocą silnika DC z przekładnią ślimakową, oraz wykonuje ruchy poprzeczne dzięki wbudowanemu serwomechanizmowi. W artykule zawarto opis sekwencji ruchów poszczególnych nóg kraba, sposobu jego poruszania się na wprost oraz skrętu w obie strony. Wykonany robot zostanie wykorzystany do inspekcji podwozia autobusów i TIR-ów.
The article presents the project of building a 6- foot walking robot - Crab. Each of the robot leg is telescopically extendable by a DC motor with worm gear and transverse movements performed with the built servomechanism. The article includes a description of the sequence of movements of individual crab legs , the way it is moving straight ahead and turn in both directions. Constructed robot will be used to inspect the chassis buses and lorries.
Źródło:
TTS Technika Transportu Szynowego; 2013, 10; 1459-1469, CD
1232-3829
2543-5728
Pojawia się w:
TTS Technika Transportu Szynowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epibiotic mites associated with the invasive Chinese mitten crab Eriocheir sinensis – new records of Halacaridae from Poland
Autorzy:
Normant, M.
Zawal, A.
Chatterjee, T.
Wojcik, D.
Powiązania:
https://bibliotekanauki.pl/articles/48732.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
epibiotic mite
mite
Chinese mitten crab
Eriocheir sinensis
Halacaridae
non-native species
Oribatida
Hydrachnidia
Polska
Źródło:
Oceanologia; 2013, 55, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The earliest record of a diogenid hermit crab from the Late Jurassic of the southern Polish Uplands, with notes on paguroid carapace terminology
Autorzy:
Fraaije, R.H.B.
Krzeminski, W.
Van Bakel, B.W.M.
Krzeminska, E.
Jagt, J.W.M.
Powiązania:
https://bibliotekanauki.pl/articles/22146.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
diogenid crab
hermit crab
Late Jurassic
Jurassic
Polish upland
paguroid carapace
carapace
terminology
Paguroidea
Diogenidae
carapace morphology
evolution
Oxfordian
Polska
new species
diogenid paguroid
Eopaguropsis nidiaquilae
Opis:
A new species of diogenid paguroid, Eopaguropsis nidiaquilae, the earliest known member of the family to date, is recorded from sponge−reefal strata of Oxfordian (Late Jurassic) age in the southern Polish Uplands. Morphological features of the carapace suggest that the family Diogenidae diverged from other paguroid lineages such as the Pylochelidae and Parapaguridae, long before the Oxfordian Stage (161.2–155.7 Ma). The typically deep, V−shaped cervical groove of diogenids most likely was the product of fusion of the branchiocardiac and cervical grooves of their predecessors.
Źródło:
Acta Palaeontologica Polonica; 2012, 57, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 38

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