Development of the Larval Stages of the Blue Swimming Crab Portunus pelagicus L. (Portunidae : Decapoda : Crustacea)

1979 ◽  
Vol 30 (4) ◽  
pp. 485 ◽  
Author(s):  
L Shinkarenko
Keyword(s):  
Scylla Serrata ◽  
Gastric Mill ◽  
Swimming Crab ◽  
Portunus Pelagicus ◽  
Larval Stages ◽  
Mechanical Breakdown

The four zoeal stages and megalopa of P. pelagicus were reared in culture and are described. Each appendage or structure is described showing the changes that occur during the zoeal phase. P. pelagicus larvae have similar types and location of setae as the larvae of P. spinicarpus. The positions of the chromatophores in the zoeal stages are described. The megalopa has the same types of setae as the zoea with the addition of two types of modified serrate setae. The zoea has no gastric mill and the capture and mechanical breakdown of the prey is the function of the mouthparts: the labrum, mandibles, maxillules and maxillae; and the serrated setae in the curve of the telson. The mouthparts of the megalopa are composed of the same appendages as in the zoea with the incorporation of the first, second and third maxillipeds. There are discrepancies between the descriptions in the present study and that of Prasad and Tampi (1953) whose second and third zoea and megalopa were obtained from the plankton. P. pelagicus larvae are compared with those of Scylla serrata to see if they could be distinguished, morphologically.

scholarly journals Pengaruh ekstrak minyak cumi pada umpan bubu terhadap hasil tangkapan kepiting bakau dan rajungan di Perairan Malise Kecamatan Tabukan Tengah

2016 ◽  
Vol 2 (3) ◽  
Author(s):  
Maichel Arvan Pananggung ◽  
Ivor L. Labaro ◽  
Emil Reppie
Keyword(s):  
Coastal Waters ◽  
Scylla Serrata ◽  
Fishing Gear ◽  
Swimming Crab ◽  
Portunus Pelagicus ◽  
Mangrove Crab ◽  
Gill Net ◽  
Oil Extract ◽  
Mangrove Crabs ◽  
By Catch

ABSTRACT Mangrove crab (Scylla serrata) and swimming crab (Portunus pelagicus) are economically important marine commodities produced from the coastal waters of Sangihe Islands Regency. But those marine commodity products are usually only caught accidentally with a bottom gill net. There has been a special trap fishing gear for that resources, but not known well by local fishermen. Addition of squid oil extraction baits could increase the fishing power of mangrove crab and swimming crab traps. This research aims to study the effect of squid oil extract on traps bait to catch mangrove crab and swimming crab; and identify the types of biota captured. This research was done in coastal waters of Malise village, Tabukan Tengah District of Sangihe Islands Regency for 2 weeks September 2015; based on experimental method. Six unit traps were operated ten trips where three units of them used scad mackerel bait that injected with squid oil extract, and tree other units just used scad mackerel bait without extract; and the capture data were analyzed using t test. The catch was 142 individuals (135 mangrove crabs and 7 swimming crab); where 86 crabs was caught by scad mackerel bait with squid oil extract, and 56 crabs caught with bait without squid oil extract. The analysis showed that the use of squid oil extracts on trap baits increased the catch. Keywords: mangrove crab, swimming crab,trap baits, squid oil extract, Sangihe   ABSTRAK[1] Kepiting bakau (Scylla serrata) dan rajungan (Portunus pelagicus) merupakan komoditi hasil laut ekonomis penting yang dihasilkan dari perairan pantai Kabupaten Kepulauan Sangihe. Tetapi komoditi hasil laut tersebut biasanya hanya tertangkap tanpa sengaja (by catch) dengan jaring insang dasar. Sebenarnya telah ada alat tangkap bubu khusus untuk kepiting bakau dan rajungan, tetapi belum dikenal oleh nelayan lokal. Pemberian ekstrak minyak cumi pada umpan, diduga dapat meningkatkan kemampuan tangkap dari bubu kepiting bakau dan rajungan. Penelitian ini bertujuan untuk mempelajari pengaruh ekstrak minyak cumi pada umpan bubu terhadap hasil tangkapan kepiting bakau dan rajungan, dan mengidentifikasi jenis-jenis biota yang tertangkap. Penelitian ini dilakukan di perairan Malise Kecamatan Tabukan Tengah, Kabupaten Kepulauan Sangihe; selama 2 minggu pada bulan September 2015; yang didasarkan pada metode eksperimental. Enam unit bubu dioperasikan selama sepuluh trip untuk mengumpulkan data; di mana tiga unit menggunakan umpan ikan layang yang disuntikan ekstrak minyak cumi, dan tiga unit lainnya hanya menggunakan umpan ikan laying tanpa ekstrak; dan data dianalisis dengan uji t. Tangkapan total berjumlah 142 ekor (135 ekor kepiting bakau dan 7 ekor rajungan); di mana 86 ekor tertangkap dengan umpan layang yang diberi ekstrak minyak cumi, dan 56 ekor tertangkap dengan umpan tanpa ekstrak. Hasil analisis menunjukkan bahwa penggunaan ekstrak minyak cumi pada umpan bubu, memberikan hasil tangkapan yang sangat berbeda dibandingkan dengan umpan tanpa ekstrak minyak cumi. Kata-kata kunci: kepiting bakau, rajungan, umpan bubu, ekstrak minyak cumi, Sangihe  

scholarly journals Participatory Approach of Fisherwomen in Crab Fattening for Alternate Income Generation in Tuticorin, Southeast Coast of India

2005 ◽  
Vol 18 (2) ◽  
Author(s):  
J. PATTERSON ◽  
V.D. SAMUEL
Keyword(s):  
Leisure Time ◽  
Participatory Approach ◽  
Scylla Serrata ◽  
Gulf Of Mannar ◽  
Income Generation ◽  
Swimming Crab ◽  
Mud Crab ◽  
Community Based ◽  
Portunus Pelagicus ◽  
Participation Of Women

A community-based crab-fattening project was adopted by the womenfolk of Vellapatti fishing village in Tuticorin coast, Gulf of Mannar for proper utilization of their available resources and their leisure time for income generation. The mud crab, Scylla serrata and blue swimming crab, Portunus pelagicus were chosen for crab fattening which is ‘First of its kind’ in India and the women are successful in fattening and creating alternate income through this project. Between these two crabs, fattening of P. pelagicus is more attractive due to the short fattening span and the low price quoted on molted crabs at the auction sheds. The participation of women and the effectiveness of this project are discussed in this paper.

scholarly journals Abundance and spatial distribution of blue swimming crab (Portunus pelagicus) larvae during east monsoon in the East Lampung waters, Indonesia

2018 ◽  
Vol 19 (4) ◽  
pp. 1326-1333 ◽  
Author(s):  
DURANTA D. KEMBAREN ◽  
ZAIRION ZAIRION ◽  
MOHAMMAD M. KAMAL ◽  
YUSLI WARDIATNO
Keyword(s):  
Spatial Distribution ◽  
Early Stage ◽  
Mass Density ◽  
Sampling Site ◽  
Water Environment ◽  
Larval Abundance ◽  
Swimming Crab ◽  
Portunus Pelagicus ◽  
Important Species ◽  
Larval Stages

Kembaren DD, Zairion, Kamal MM, Wardiatno Y. 2018. Abundance and spatial distribution of blue swimming crab (Portunuspelagicus) larvae during east monsoon in the East Lampung waters, Indonesia. Biodiversitas 19: 1326-1333. The blue swimmingcrab/BSC, Portunus pelagicus, is an economically important species in fishery industry and continuously being exploited, particularly inthe East Lampung waters. BSC research in Indonesia during the last decade was only restricted to the adult phase, while research ontheir larval dynamics in nature has not been done yet. This study aimed to assess the abundance and the distribution of BSC larvae, andto describe their correlation to its environmental conditions. This study was conducted in June 2017 (during east monsoon) in the EastLampung waters. Sampling was done in surface water during the daylight hours on nine sites with three replicates on each site. Planktonabundance and oceanographic profile were also recorded from the same sampling site. The result from this study showed that the waterquality from the environment was suitable for the development of BSC larvae. The abundance of the early-stage larvae (Z1-Z3) wasrelatively higher than the late-stage larvae (Z4 and M). The larval stages of BSC were dispersed and completed their development in themid-shore and offshore waters. There was a tendency that the early-stage was more abundant in the northern part, while the late-stagewas more abundant in the southern part of the study area. The highest larval abundance was found in the mid-shore, particularly in sitenumber five, which was influenced by the water mass density and current direction during the east monsoon. Moreover, oxygenconcentration and salinity of the water environment influenced the early-stage larvae abundance more than the late-stages abundance.

scholarly journals Development of Enzymes andIn VitroDigestibility during Metamorphosis and Molting of Blue Swimming Crab (Portunus pelagicus)

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Phanu Chamchuen ◽  
Boonyarath Pratoomchat ◽  
Arunee Engkakul ◽  
Uthaiwan Kovitvadhi ◽  
Krisna Rungruangsak-Torrissen
Keyword(s):  
Digestive Enzymes ◽  
Raw Materials ◽  
Carapace Width ◽  
Protein Digestibility ◽  
Swimming Crab ◽  
Molting Cycle ◽  
Portunus Pelagicus ◽  
Larval Stages ◽  
Specific Activities

The work focuses on development of digestive enzymes (amylase, total protease, trypsin, and chymotrypsin) and activity ratio of trypsin to chymotrypsin (T/C ratio) for digestive efficiency and growth, in blue swimming crab (Portunus pelagicus) during metamorphosis and molting. Specific activities of all enzyme parameters studied were associated with growth during metamorphosis, while only those of trypsin and T/C ratio were associated during molting cycle where trypsin and chymotrypsin specific activities associated with consumption rate with especially high levels during late intermolt and early premolt stages. About 50% increased weight gain was observed with at least double increased T/C ratio at the end of molting period, compared to the stages prior to molting. Growth of carapace would be more significant after finishing molting. Carapace width gain and T/C ratio were highest at the first crab stage. Studies ofin vitroprotein digestibility of different feed raw materials indicated thatArtemia, Rotifer, andMoinaare the best for larval stages. Otherwise, the use of shrimp feed andArtemiaflake could be the alternatives. Incorporating of cassava meal into the feed formula for early adult stage (juvenile) could be an advantage. The proteins from animals are more beneficial for adult crab culture than the proteins from plants and bacteria. The digestible quality of dietary protein is very important during larval stages, while the protein level of diet is more important during adult stages with fully developed digestive enzymes.

scholarly journals Penentuan Komoditas Unggulan Perikanan Tangkap di Perairan Provinsi Kepulauan Bangka Belitung

2021 ◽  
Vol 12 (1) ◽  
pp. 47-58
Author(s):  
Dersi Herka Mayu ◽  
Dian Wijayanto ◽  
Abdul Kohar Mudzakir ◽  
Kurniawan Kurniawan
Keyword(s):  
Data Analysis ◽  
Red Snapper ◽  
Scylla Serrata ◽  
Economic Sector ◽  
Swimming Crab ◽  
Location Quotient ◽  
Portunus Pelagicus ◽  
Scomberomorus Commerson ◽  
Plectropomus Leopardus

consisting of 954 islands with 218.236 tonnes capture fisheries potential. As a leading economic sector in the region, capture fisheries should be maintained sustainably. One of actions that can be done is focusing fisheries development on prime commodities. Purpose of this study were to identify prime commodities and potential commodities in Bangka Belitung waters. Location Quotient (LQ) Analysis, Shift Share (SS), and Specialization Index (SI) were used for data analysis. The result showed that there were three prime commodities i.e., red snapper (Lutjanus campecanus), mackerel (Scomberomorus commerson), and blue swimming crab (Portunus pelagicus). Other potential fisheries commodities in Bangka Belitung Province were grouper (Plectropomus leopardus), yellowtail (Caesio erythrogaster), sea catfish (Arius thalassinus), fork-tailed threadfin bream (Nemipterus furcocus), stingray (Dasyatis sp), and crab (Scylla serrata). Keywords: Bangka Belitung Province, capture fisheries, prime commodities

scholarly journals Comparative population genetics of swimming crab host (Portunus pelagicus) and common symbiotic barnacle (Octolasmis angulata) in Vietnam

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11671
Author(s):  
Binh Thuy Dang ◽  
Oanh Thi Truong ◽  
Sang Quang Tran ◽  
Henrik Glenner
Keyword(s):  
Genetic Diversity ◽  
Life Histories ◽  
Isolation By Distance ◽  
Biological Interactions ◽  
Swimming Crab ◽  
Population Isolation ◽  
Portunus Pelagicus ◽  
Larval Stages ◽  
Haplotype Networks ◽  
Genetic Diversity And Structure

Background By comparing spatial geographical structures of host populations with that of their symbionts light can be shed on their biological interactions, and the degree of congruence between host and symbiont phylogeographies should reflect their life histories and especially dispersal mechanisms. Methods Here, we analyzed the genetic diversity and structure of a host, the blue swimming crab, Portunus pelagicus, and its symbiotic pedunculate barnacle Octolasmis angulata from six location sites representing three geographic regions (north, central and south) along the Vietnam coastline. High levels of congruence in their phylogeographic patterns were expected as they both undergo planktonic larval stages. Results Based on the COI mtDNA markers, O. angulata populations showed higher genetic diversity in comparison with their host P. pelagicus (number of haplotype/individuals, haplotype and nucleotide diversity are 119/192, 0.991 ± 0.002 and 0.02; and 89/160, 0.913 ± 0.02 and 0.015, respectively). Pairwise Fst and AMOVA analyses showed a more pronounced population structure in the symbiotic barnacle than in its crab host. The DAPC analyses identified three genetic clusters. However, both haplotype networks and scatter plots supported connectivity of the host and the symbiotic barnacle throughout their distribution range, except for low subdivision of southern population. Isolation by distance were detected only for the symbiont O. angulata (R2 = 0.332, P = 0.05), while dbMEM supported spatial structure of both partners, but only at MEM-1 (Obs. 0.2686, P < 0.01 and Obs. 0.2096, P < 0.01, respectively).

Use of escape vents to improve size and species selectivity of collapsible pot for blue swimming crab Portunus pelagicus in Thailand

2008 ◽  
Vol 75 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Anukorn Boutson ◽  
Chaichan Mahasawasde ◽  
Songsri Mahasawasde ◽  
Suriyan Tunkijjanukij ◽  
Takafumi Arimoto
Keyword(s):  
Swimming Crab ◽  
Portunus Pelagicus ◽  
Species Selectivity

Visualization of biomolecules in the eyestalk of the blue swimming crab, Portunus pelagicus , by imaging mass spectrometry using the atmospheric-pressure mass microscope

2010 ◽  
Vol 42 (10-11) ◽  
pp. 1589-1592 ◽  
Author(s):  
Morakot Sroyraya ◽  
Naoko Goto-Inoue ◽  
Nobuhiro Zaima ◽  
Takahiro Hayasaka ◽  
Piyachat Chansela ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Atmospheric Pressure ◽  
Imaging Mass Spectrometry ◽  
Swimming Crab ◽  
Portunus Pelagicus

scholarly journals Development and functional morphology of the larval foregut of two brachyuran species from Northern Brazil

2011 ◽  
Vol 83 (4) ◽  
pp. 1269-1278 ◽  
Author(s):  
Fernando A. Abrunhosa ◽  
Darlan J.B. Simith ◽  
Joely R.C. Monteiro ◽  
Antonio N. de Souza Junior ◽  
Pedro A.C. Oliva
Keyword(s):  
Larval Development ◽  
Feeding Behaviour ◽  
Food Source ◽  
Morphological Structure ◽  
Filter Press ◽  
Larval Feeding ◽  
Structural Development ◽  
Gastric Mill ◽  
Larval Stages ◽  
Northern Brazil

Feeding is an important factor for the successful rearing of larvae of the crab species. Further information on the morphological features of the foregut may to reveal larval feeding behaviour and or/whether there is a lecithotrophy in some or even in all stages of the larval cycle. In the present study, the structural development of the foregut and their digestive functions were examined in larvae of two brachyurans, Uca vocator and Panopeus occidentalis, reared in the laboratory. During larval development, the foreguts of the larvae in the first and last zoeal stages and in the megalopa stage were microscopically examined, described and illustrated. The zoeal foreguts of both species were well developed, showing specialization with a functional cardiopyloric valve and a filter press. The megalopa stage had a complex and specialized gastric mill similar to that found in adult crabs with the appearance of rigidly calcified structures. These results support the hypothesis that the feeding behaviour of each larval stage is directly related to the morphological structure of the foregut. Such facts strongly indicate that all larval stages of both . vocator and P occidentalis need an external food source before completing the larval development in a planktonic environment.

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