scholarly journals Short Communication: Biometric of freshwater crayfish (Cherax spp.) from Papua and West Papua, Indonesia

2018 ◽  
Vol 19 (2) ◽  
pp. 489-495 ◽  
Author(s):  
ABINAWANTO ABINAWANTO ◽  
HANI HAMIDAH ◽  
ANOM BOWOLAKSONO ◽  
RURY EPRILURAHMAN
Keyword(s):  
Discriminant Function ◽  
Short Communication ◽  
Freshwater Crayfish ◽  
Population Groups ◽  
The Third ◽  
West Papua ◽  
Native Crayfish ◽  
Biometric Information ◽  
Crayfish Species

Abinawanto, Hamidah H, Bowolaksono A, Eprilurahman R. 2018. Short Communication: Biometric of freshwater crayfish (Cherax spp.) from Papua and West Papua,, Indonesia. Biodiversitas 19: 489-495. Freshwater crayfish, Cherax spp. is a native crayfish species in Papua, Indonesia. Biometric information of this crayfish species in Indonesia is limited. Hence, this study aimed to provide these data. Specimens were collected from West Papua Province, i.e., from Uter Lake (Atinjo Subdistrict, Maybrat) and Seremuk River (Haha Village, Seremuk Subdistrict, South Sorong), respectively. Besides, the specimens were also collected from Papua Province in Baliem River at Pike Village, Hubukiak Subdistrict, and Wesaput Village, Wesaput Subdistrict, Jayawijaya. Data were analyzed using canonical discriminant function (CDF). The results showed that the longest carapace of Cherax spp. was 97.83 mm found in Baliem River at Pike Village. CDF analysis showed that there were three population groups of Cherax spp. from four locations. The first group originated from Uter Lake (Atinjo Subdistrict) and Seremuk River (Haha village). The second group was from Baliem River (Pike Village; Hubukiak Subdistrict, Jayawijaya and the third group from Baliem River (Wesaput Village; Wesaput Subdistrict).

scholarly journals The current distribution of the freshwater crayfish (Decapoda: Astacidae, Cambaridae) in the Neman river basin in Belarus

2020 ◽  
Vol 65 (2) ◽  
pp. 182-190
Author(s):  
A. V. Alekhnovich ◽  
D. V. Molotkov ◽  
K. Śliwińska
Keyword(s):  
Invasive Species ◽  
Alien Species ◽  
River Basin ◽  
Current Distribution ◽  
Native Species ◽  
Local Community ◽  
Freshwater Crayfish ◽  
Gravel Pits ◽  
Native Crayfish ◽  
Crayfish Species

The trends in the distribution and occurrence of the freshwater crayfish in the water bodies of the Neman River basin are presents. It has been shown that both native species: the noble and the narrow-clawed crayfish are declined and/or are displaced with rapidly expanding its range the invasive spiny-cheek crayfish. In recent years the alien species was found in isolated gravel pits and lakes, where it could be transferred only by the human activity. These findings confirm the need of the education about the threats posed by the invasive species on the native biodiversity especially with the local community, which is an obligatory practice for protection the native species in the area expanded with non-native crayfish species. Further, to increase the likelihood of the local biodiversity conservation it is highly needed to undertake targeted actions aimed at resettling endangered populations into waterbodies unavailable for the invasive spiny-cheek crayfish expansion.

Phylogenetic relationships among the Australian and New Zealand genera of freshwater crayfishes (Decapoda : Parastacidae)

1999 ◽  
Vol 47 (2) ◽  
pp. 199 ◽  
Author(s):  
Keith A. Crandall ◽  
James W. Fetzner, Jr ◽  
Susan H. Lawler ◽  
Margie Kinnersley ◽  
Christopher M. Austin
Keyword(s):  
New Zealand ◽  
Maximum Likelihood ◽  
Mitochondrial Genome ◽  
Phylogenetic Relationships ◽  
Freshwater Crayfish ◽  
Minimum Evolution ◽  
Base Pairs ◽  
The Third ◽  
Crayfish Species

We sequenced approximately 500 base pairs of DNA from the 16S region of the mitochondrial genome to estimate relationships among the freshwater crayfish genera of Australia and New Zealand. In total, 35 sequences were obtained, representing 32 species and all 10 genera native to Australia and New Zealand. From these sequences, maximum likelihood, minimum evolution and parsimony estimates of phylogenetic relationships among the genera were obtained and compared with previous hypotheses concerning the relationships among the crayfish genera. Our results support the monophyly of each genus (except perhaps Euastacus) and the organisation of these genera into three major clades: the first clade contains the genera Engaeus, Tenuibranchiurus, Geocharax, Gramastacus, and Cherax; the second clade contains the genera Paranephrops, Parastacoides, Euastacus, and Astacopsis; and the third clade contains the genus Engaewa. We reject the ecological hypothesis of Riek for two major clades of crayfish species. Finally, we provide a checklist of the Australian and New Zealand species as they are currently recognised.

scholarly journals Short communication: Production, distribution and conservation analysis of Cherax crayfish endemic to Papua and West Papua Provinces, Indonesia

2021 ◽  
Vol 22 (6) ◽  
Author(s):  
Ferliana Widyasari ◽  
Mohammad Sayuti ◽  
Randi Bokhy Syuliana Salampessy
Keyword(s):  
Local Community ◽  
Short Communication ◽  
Economic Value ◽  
Iucn Red List ◽  
Freshwater Crayfish ◽  
Conservation Analysis ◽  
Production Distribution ◽  
West Papua ◽  
In The Wild ◽  
Data Deficient

Abstract. Widyasari F, Sayuti M, Salampessy RBS. 2021. Short communication: Production, distribution and conservation analysis of Cherax crayfish endemic to Papua and West Papua Provinces, Indonesia. Biodiversitas 22: 3271-3276. Freshwater crayfish is a species from the Parastacidae family that is indigenous to Papua and West Papua Indonesia. This study analyzes the amount of production, economic value, distribution, and conservation of freshwater crayfish endemic to Papua and West Papua. The production data were obtained from Stasiun Karantina Ikan or Fish Quarantine Inspection Agency in Papua and West Papua, Indonesia. Data regarding the price of Cherax crayfish were determined based on interviews with freshwater crayfish sellers. Furthermore, the distribution of freshwater crayfish was explained based on a literature review, while the data of its conservation were retrieved from the IUCN Red List of Threatened Species. Cherax crayfish caught from wild populations in West Papua is known higher than in Papua. Increased sales revenue could support the economy of the local community. There have been 25 species of freshwater crayfish identified, nine of which were from West Papua and 16 from Papua. Three species were under Endangered (EN), Least Concern (LC), Vulnerable (VU) status, respectively. Four species were under Data Deficient (DD) status, while the rest were unidentified. Overfishing of Cherax crayfish causes decline Cherax crayfish stock in the wild, future researchers are expected to conduct more specific studies that include relevant stakeholders regarding the conservation of Cherax crayfish that are endemic to Papua and West Papua.

scholarly journals Money Kills Native Ecosystems: European Crayfish as an Example

2021 ◽  
Vol 9 ◽  
Author(s):  
Japo Jussila ◽  
Lennart Edsman ◽  
Ivana Maguire ◽  
Javier Diéguez-Uribeondo ◽  
Kathrin Theissinger
Keyword(s):  
Alien Species ◽  
Aquatic Ecosystems ◽  
Significant Proportion ◽  
Suitable Habitat ◽  
Freshwater Crayfish ◽  
Aphanomyces Astaci ◽  
Commercial Activities ◽  
Disease Agent ◽  
Native Crayfish ◽  
Crayfish Species

Native European crayfish conservation was triggered by invasion of crayfish plague disease agent, Aphanomyces astaci, starting 1860s in Northern Italy. Resulting crayfish plague epidemics quickly spread over Continental Europe, then to Finland, Sweden and finally, after running amok around Europe, A. astaci was discovered also in Iberian Peninsula, Norway, Ireland, and United Kingdom in 1970s and 1980s. By that time significant proportion of native crayfish stocks had been lost, and while crayfish plague epidemics were still recorded, also industrialization and waterways construction were causing damage to remaining native crayfish stocks. While alien crayfish introductions, at least Faxonius limosus, already gave rise to first wave of crayfish plague epidemics in late 19th century, later in 1960s it was decided that introductions of alien Pacifastacus leniusculus should be initiated to replace native European crayfish populations. Decisions were based on presumed advantages for fishery, suitable habitat requirements and supposed immunity against A. astaci. Furthermore, conservation of native European crayfish species was sidelined and focus shifted toward alien crayfish stocking routine and consumption. Alien crayfish species introductions resulted in repeated waves of crayfish plague epidemics among remaining native crayfish stocks. It was soon discovered that alien crayfish of North American origin were, as suspected, permanent reservoirs for A. astaci, that some of those alien species were losing their resistance against selected strains of A. astaci and struggled in European aquatic ecosystems. In this article, we introduce numerous motives behind grand mistake of introducing alien crayfish species to Europe and then promoting their stocks instead of focusing on conservation of native crayfish species. We outline how false economical, biological and ecologic assumptions were used to justify a hasty introduction of alien crayfish, which has further devastated native crayfish and also permanently changed European aquatic ecosystems, both with disastrous consequences. Lesson to be learnt is that science-based warnings about alien species damage to native ecosystems and native crayfish must be taken with utmost caution. Protection of native European crayfish should be core issue, not commercial activities. Finally, we summarize main threats and actions needed to protect remaining native freshwater crayfish fauna in Europe.

Evidence for multiple paternity in two species of Orconectes crayfish

2014 ◽  
Vol 92 (11) ◽  
pp. 985-988 ◽  
Author(s):  
A.F. Kahrl ◽  
R.H. Laushman ◽  
A.J. Roles
Keyword(s):  
Genetic Variation ◽  
Life History ◽  
Multiple Mating ◽  
Natural Populations ◽  
Multiple Paternity ◽  
The Body ◽  
Freshwater Crayfish ◽  
Decapod Crustaceans ◽  
Freshwater Habitats ◽  
Crayfish Species

Multiple mating is expected to be common in organisms that produce large clutches as a mechanism by which sexual reproduction can enrich genetic variation. For freshwater crayfish, observation of multiple mating suggests the potential for high rates of multiple paternity, but genetic confirmation is largely lacking from natural populations. We studied paternity within wild-caught broods of two crayfish species in the genus Orconectes (Sanborn’s crayfish (Orconectes sanbornii (Faxon, 1884)) and the Allegheny crayfish (Orconectes obscurus (Hagen, 1870))). Although females have been observed mating with multiple males, this is the first genetic confirmation of multiple paternity in broods of these two species. Berried females were collected in the field and maintained in aquaria until their eggs hatched. We amplified and genotyped extracted DNA from maternal and hatchling tissue for several microsatellite loci. For both species, paternity reconstruction (GERUD 2.0) yielded 2–3 sires per brood and no single paternity clutches. We discuss these results from natural populations in light of the body of work on reproductive ecology of decapod crustaceans and in the context of changes in life history following the transition from marine to freshwater habitats.

scholarly journals EDITORIAL: Millennium mayhem

2000 ◽  
Vol 6 (1) ◽  
pp. 5-9
Author(s):  
David Robie
Keyword(s):  
Prime Minister ◽  
Solomon Islands ◽  
News Story ◽  
State Of Emergency ◽  
Irian Jaya ◽  
The Third ◽  
Fiji Islands ◽  
The Pacific ◽  
West Papua ◽  
Historic Change

The Pacific has entered the third millennium after a tempestuous time in the final year of the 20th Century. All the recent events have had an impact on the region's media.The fragile peace in Bougainville has continued to experience hiccups; the state of emergency in the Solomon Islands over ethnic unrest and even the historic change of government in the Fiji Islands with the country's first Indo-Fijian prime minister. have unleashed tensions. But the major upheaval, of course, has been East Timor's devastating transition to independence from Indonesia and in the resurgence of West Papua ( recently "renamed" Papua from Irian Jaya by Jakarta's colonial authorities) as a news story.

Epifauna of native and alien freshwater crayfish species (Crustacea:Decapoda): a host-specific community?

2018 ◽  
Vol 37 (3) ◽  
pp. 593-604 ◽  
Author(s):  
Tvrtko Dražina ◽  
Ana Korša ◽  
Maria Špoljar ◽  
Ivana Maguire ◽  
Göran I. V. Klobučar
Keyword(s):  
Freshwater Crayfish ◽  
Specific Community ◽  
Crayfish Species

The potential of antimicrobial peptides isolated from freshwater crayfish species in new drug development: A review

2022 ◽  
Vol 126 ◽  
pp. 104258
Author(s):  
Diletta Punginelli ◽  
Domenico Schillaci ◽  
Manuela Mauro ◽  
Alan Deidun ◽  
Giampaolo Barone ◽  
...  
Keyword(s):  
Drug Development ◽  
Antimicrobial Peptides ◽  
Freshwater Crayfish ◽  
New Drug ◽  
New Drug Development ◽  
Crayfish Species

Do we know the effects of colorectal cancer screening? A short communication on selective uptake and differential effects of colorectal cancer screening in Scandinavia

2020 ◽  
pp. 140349482096064
Author(s):  
Anna Vera Jørring Pallesen ◽  
Jørn Herrstedt ◽  
Rudi G.J. Westendorp ◽  
Laust Hvas Mortensen ◽  
Maria Kristiansen
Keyword(s):  
Colorectal Cancer ◽  
Cancer Screening ◽  
Social Inequality ◽  
Colorectal Cancer Screening ◽  
Short Communication ◽  
Screening Programme ◽  
Published Data ◽  
Selective Uptake ◽  
Population Groups ◽  
Crc Screening

Colorectal cancer (CRC) contributes extensively to the overall cancer burden, with substantial and increasing social inequality in both incidence and survival. In several countries, this social inequality in incidence and survival has been increasing over time, and the increase is expected to continue. To overcome this, it is advised to implement nationwide CRC screening programmes, as these are effective in detecting possible signs of CRC, hence identifying earlier-stage cancer and reducing mortality. However, little is known about the distribution of these effects across population groups. It is possible that the outcomes of CRC screening are not equally distributed among participants, but rather that the screening programme serves some population groups better than others. The aim of this short communication based on published data is to describe the status of selective uptake according to sociodemographic and economic factors in CRC screening in Scandinavia. Furthermore, we raise questions that need to be addressed in future research in order to grasp the full effects of the screening programme and ultimately to ensure high uptake as well as participation in subsequent diagnostic procedures across population groups.

India’s Child Brides and Youngest Mothers: Beyond Popular Perceptions

2019 ◽  
Vol 13 (3) ◽  
pp. 325-343 ◽  
Author(s):  
Apala Saha
Keyword(s):  
Adolescent Mothers ◽  
North India ◽  
Rural India ◽  
Regional Pattern ◽  
Population Groups ◽  
The Third ◽  
Regional Location ◽  
Child Brides ◽  
East West

Over one million girls in India are married off before they turn 15 years of age, and more than four hundred thousand among them bear children. This article aims to identify and locate regionally the youngest cohort of child brides and adolescent mothers. It seeks to highlight the associated complexities and challenges of this feature in the country using Census of India, 2011 data. The analysis shows that, at first level, this phenomenon represents in a broad east-west regional pattern; in the second level of disaggregation, it emerges in rural Rajasthan and urban parts of Gujarat and Maharashtra and, in the third level, it emerges in particular pockets like Bhilwara, Ajmer, Chittaurgarh, Tonk, Ahmedabad, Kheda and Gandhinagar. This article shows that the incidence of the phenomenon of child brides does not reflect a clear linkage with the regional location of population groups such as north India or rural India. The popular characterisation of this feature on regional lines fails to spot its incidence across the country and undermines the gravity of the issue in almost every district.

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