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Wyświetlanie 1-15 z 31
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:
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:
New Late Jurassic symmetrical hermit crabs from the southern Polish Uplands and early paguroid diversification
Autorzy:
Fraaije, R.H.B.
Krzeminski, W.
Van Bakel, B.W.M.
Krzeminska, E.
Jagt, J.W.M.
Powiązania:
https://bibliotekanauki.pl/articles/945882.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
Anomura
Paguroidea
Parapylochelidae
carapace
morphology
evolution
Jurassic
Late Jurassic
hermit crab
crab
Polska
paguroid carapace
Opis:
On the basis of carapaces, three new genera and species of symmetrical paguroid anomurans are described. Diogenicheles theodorae, Masticacheles longirostris, and Pilgrimcheles karolinae constitute the oldest known members of the family Parapylochelidae. As noted previously, assemblages from sponge−reefal strata of Oxfordian (Late Jurassic) age in the southern Polish Uplands document an important radiation event amongst paguroids. Compared to the present day, the Parapylochelidae were more diverse during the mid−Mesozoic; they appear to have withdrawn from shallow, reefal waters to deep−water settings from the Late Jurassic onwards. Paguroid faunas from the Oxfordian of Europe already are highly diverse, both morphologically and phylogenetically, and comprise early members of the families Diogenidae, Pylochelidae, and Parapylochelidae. This suggests that the evolutionary history of paguroids started much earlier (i.e., in pre−Jurassic times) than previously assumed. New terms for several typical paguroid carapace regions are introduced and on the basis of carapace morphology and ecological shifts hypotheses on the early speciation of hermit crabs are put forward.
Źródło:
Acta Palaeontologica Polonica; 2014, 59, 3; 681-688
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
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:
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:
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:
Using Applied Statistics for Accurate Size Classification of the Endangered Tachypleus tridentatus Horseshoe Crab
Autorzy:
Mohamed, Rozihan
Paul, Nur Alisa
Isa, Nor Syuhaida
Damanhuri, Joni Haryadi
Shahimi, Salwa
Pati, Siddhartha
John, Akbar
Nelson, Bryan Raveen
Powiązania:
https://bibliotekanauki.pl/articles/1839597.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
conservation
fishery
indicator
horseshoe crab
ecology
wild stock
Opis:
The Tachypleus tridentatus (Chelicerata: Xiphosura) is an arthropod that usually displays high site fidelity by restricting its distribution to natal vicinities. Briefly, shore perturbation from boating (Kudat), electric, cyanide and bombing (Kunak) and tourism (Semporna) in Sabah can impair the T. tridentatus growth and produce sexually mature adults with unusual size. The 8-point morphometry of Tachypleus tridentatus from Kudat (Sulu Sea), Kunak and Semporna (Celebes Sea), produces the final output constituting accurate size classification for the species. Meanwhile, T. tridentatus are sexually dimorphic (p = 0.968–0.989), where male T. tridentatus (from Kudat) has prosoma width (27.75 ± 2.68 cm) and weight (1050 ± 610 g) in smaller ranges when compared to the female (33.27 ± 4.68 cm; 3020 ± 1480 g) using the same comparison. In addition, the T. tridentatus populations from Kunak (prosoma width: male = 28.91 ± 1.48 cm, female = 29.44 ± 5.47 cm; weight: male = 800 ± 275 g; female = 2550 ± 155 g) and Semporna (prosoma width: male = 21.73 ± 1.34 cm, female = 24.42 ± 1.36 cm; weight: male = 485 ± 306 g, female = 1320 ± 640 g) differed site-wise. The descriptive statistics (average and standard deviation) relate 7.1–23.0% of T. tridentatus with negative size class. However, the applied statistics using stepwise analysis and regression curve (r2 = 0.566–0.833), relates 30.4% of T. tridentatus with negative size class. Considering weight to produce 100% T. tridentatus with positive size class, it is biased because some crabs are gravid with eggs and if attained unpaired (male and female), they may have recently fed. Therefore, the prosoma (male), interorbit (female) and telson lengths are identified as most appropriate for the size classification of T. tridentatus. Thus, the findings provide a novel baseline for conservation studies that monitor symmetrical and unusual growth in the T. Tridentatus wild stocks.
Źródło:
Journal of Ecological Engineering; 2021, 22, 4; 273-282
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biosorption Performance of Biodegradable Polymer Powders for the Removal of Gallium(III) ions from Aqueous Solution
Autorzy:
Lee, Ching-Hwa
Lin, Hang-Yi
Cadogan, Elon I.
Popuri, Srinivasa R.
Chang, Chia-Yuan
Powiązania:
https://bibliotekanauki.pl/articles/778539.pdf
Data publikacji:
2015
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
chitosan
crab shell powder
gallium
Langmuir-Freundlich
kinetics
Opis:
Gallium (Ga) is considered an important element in the semiconducting industry and as the lifespan of electronic products decrease annually Ga-containing effluent has been increasing. The present study investigated the use of biodegradable polymer powders, crab shell and chitosan, in the removal of Ga(III) ions from aqueous solution. Ga(III) biosorption was modeled to Lagergren-first, pseudo-second order and the Weber-Morris models. Equilibrium data was modeled to the Langmuir, Freundlich and Langmuir-Freundlich adsorption isotherms to determine the probable biosorption behavior of Ga(III) with the biosorbents. The biosorbents were investigated by Fourier Transform Infrared Spectroscopy, X-ray Diffraction and Scanning Electron Microscopy/Energy Dispersive Spectra analysis.
Źródło:
Polish Journal of Chemical Technology; 2015, 17, 3; 124-132
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The earliest record of pylochelid hermit crabs from the Late Jurassic of southern Poland, with notes on paguroid carapace terminology
Autorzy:
Fraaije, R.H.B.
Krzeminski, W.
Van Bakel, B.W.M.
Krzemiska, E.
Jagt, J.W.M.
Powiązania:
https://bibliotekanauki.pl/articles/21257.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
pylochelid crab
hermit crab
Ammopylocheles robertboreki Jurapylocheles iwonae
carapace
terminology
fossil
systematics
Late Jurassic
Jurassic
Polska
Paguroidea
Pylochelidae
new species
evolution
Oxfordian
Opis:
Strata with cyanobacterial−sponge buildups of Middle to Late Oxfordian (Late Jurassic) age in the southern Polish Uplands document the earliest known members of the Pylochelidae. Two new Late Jurassic species of “symmetrical” hermit crabs, Ammopylocheles robertboreki and Jurapylocheles iwonae, are described. A new term, the massetic region, is introduced to describe the equivalent in paguroids of the hepatic region in brachyuran carapaces, because in the former, this region does not reflect the position of the liver but rather an attachment zone of the mandibular muscles.
Źródło:
Acta Palaeontologica Polonica; 2012, 57, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New distributional report of Borboropactus bituberculatus Simon 1884 from Nicobar Islands, India
Autorzy:
Dash, Minakshi
Sivaperuman, C.
Powiązania:
https://bibliotekanauki.pl/articles/1031439.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Andaman and Nicobar Islands
Borboropactus bituberculatus
Crab spider
India
Taxonomy
Thomisidae
Opis:
A female of Borboropactus bituberculatus Simon, 1884 has been reported from Andaman and Nicobar Islands, India for the first time. Diagnostic characters are provided for the species, as well as new photographs or illustrations of the genital organs of the species.
Źródło:
World News of Natural Sciences; 2021, 36; 1-8
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovations Under the Concept of ‘Turning Garbage into Gold’ in Fisheries Waste Management
Autorzy:
Yusuf, Muhammad
Powiązania:
https://bibliotekanauki.pl/articles/474928.pdf
Data publikacji:
2013
Wydawca:
Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
Tematy:
new entrepreneurship
innovation and creativity
Indonesia
fisheries waste
crab shell powder
Opis:
This paper discusses the encouragement of creativity and innovation in creating opportunities for entrepreneurship turning useless materials into valuable resources. It is necessary to know the thought process and planning in the entrepreneurship idea to create a new business at this time. One of the brilliant philosophies about entrepreneurs is that they are those who can “turn garbage into gold”. This concept describes the important character of entrepreneurs who foresee business opportunities and have the intelligence to transform trash into cash. This means that they have the necessary ability to create innovation and value-added products for sale. The analyzed case study involves innovation in using fisheries waste specifically derived from crab industries in Indonesia. The study presents empirical perspectives including (1) potential business of crab shell waste (2) technology in innovative use of shell to added value product (3) business analysis and commercialization. Ultimately, we present the concept of a new business by linking theories of entrepreneurial innovation and technology transfer in order to gain environmental balance.
Źródło:
Journal of Entrepreneurship, Management and Innovation; 2013, 9, 4; 101-122
2299-7075
2299-7326
Pojawia się w:
Journal of Entrepreneurship, Management and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and characterization of composites based on hydroxyapatite nanoparticles and chitosan extracted from shells of the freshwater crab Potamon algeriense
Autorzy:
Lakrat, Mohammed
Fadlaoui, Soufiane
Aaddouz, Mohamed
El Asri, Ouahid
Melhaoui, Mohammed
El Miloud, Mejdoubi
Powiązania:
https://bibliotekanauki.pl/articles/1033995.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
Potamon algeriense
bone tissue engineering
chitosan
freshwater crab
nanocomposites
nanocrystalline hydroxyapatite
Opis:
Nanocrystalline hydroxyapatite (n-HAp), which has low crystallinity, has attracted great attention due to its similarity to the inorganic part of human bone. Therefore, many studies have focused on creating new formulations combining n-HAp with some biopolymers, such as chitosan, in order to imitate biological bone tissue. The importance of chitosan and its derivatives in biomedical applications has grown significantly in the last three decades due to its biodegradability and renewable source. Besides, chitosan and its derivatives present excellent biocompatibility and biofunctionality, which make them promising materials in bone tissue engineering. In the present study, the chitosan was, first, extracted from the shell of the freshwater crab species Potamon algeriense following demineralization, deproteinization, decolouration (raw chitin) and deacetylation (chitosan) steps. Then, a novel composite based on n-HAp and extracted chitosan (CTS) with varying chitosan contents, from 5% to 20% (w/w), was synthesized and characterized for potential application in tissue regeneration. The obtained composites were characterized using X-ray diffraction, Fourier transform infrared spectroscopy and thermogravimetric analysis. The precipitated n-HAp/CTS nanocomposites similar to natural bone are promising composites for bone tissue engineering applications.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2020, 25; 132-142
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
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
Tytuł:
Size Distribution and Sex Ratio of the Blue Swimming Crab (Portunus (Portunus) pelagicus Linnaeus, 1758) Commodities in Gebang Mekar Village, Cirebon Regency, West Java, Indonesia
Autorzy:
Shabrina, Nabilla
Khan, Alexander M. A.
Gumilar, Iwang
Supriadi, Dedi
Powiązania:
https://bibliotekanauki.pl/articles/1031889.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Portunus pelagicus
blue swimming crab
carapace width
gebang mekar village
sex ratio
Opis:
Blue swimming crab (Portunus (Portunus) pelagicus (Linnaeus, 1758)) is included as one of the fishery commodities that has high economic value and becomes one of the primadonnas in the field of fisheries. Besides in the local market, the blue swimming crabs can be one of the high levels and promising export commodities. The purpose of this research is to determine the size distribution and sex ratio from blue swimming crab in Java Sea near Gebang Mekar Village, Cirebon Regency. This research was conducted in Gebang Mekar Village, Cirebon Regency at September 2019 – October 2019 using the case study method with descriptive analysis and quantitative approach. Primary data used are the carapace width of blue swimming crab, amount of male and female blue swimming crab and female blue swimming crab containing egg. The results of the research that blue swimming crab catched by crab gillnet in Java Sea near Gebang Mekar Village, Cirebon Regency have sex ratio 1:1 and the growth of male crabs in these waters was faster than that of female crabs.
Źródło:
World News of Natural Sciences; 2020, 30, 2; 232-242
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 31

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