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 Organization and phylogenetic relationships of the mitochondrial genomes of Speiredonia retorta and other lepidopteran insects

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yu Sun ◽  
Hua Huang ◽  
Yudong Liu ◽  
Shanshan Liu ◽  
Jun Xia ◽  
...  
Keyword(s):  
Bayesian Inference ◽  
Maximum Likelihood ◽  
Mitochondrial Genome ◽  
Complete Mitochondrial Genome ◽  
Mitochondrial Genomes ◽  
Base Pairs ◽  
Rich Region ◽  
Protein Coding ◽  
Protein Coding Genes ◽  
Lepidopteran Insects

AbstractIn this study, we analyzed the complete mitochondrial genome (mitogenome) of Speiredonia retorta, which is a pest and a member of the Lepidoptera order. In total, the S. retorta mitogenome was found to contain 15,652 base pairs encoding 13 protein-coding genes (PCGs), 22 tRNAs, 2 rRNAs, as well as an adenine (A) + thymine (T)-rich region. These findings were consistent with the mitogenome composition of other lepidopterans, as we identified all 13 PCGs beginning at ATN codons. We also found that 11 PCGs terminated with canonical stop codons, whereas cox2 and nad4 exhibited incomplete termination codons. By analyzing the mitogenome of S. retorta using Bayesian inference (BI) and maximum likelihood (ML) models, we were able to further confirm that this species is a member of the Erebidae family.

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 Whole mitochondrial genome of long-clawed mole vole (Prometheomys schaposchnikowi) from Turkey, with its phylogenetic relationships

Genomics ◽  
2020 ◽  
Vol 112 (5) ◽  
pp. 3247-3255
Author(s):  
Osman İbiş ◽  
Ahmet Yesari Selçuk ◽  
Benjamin N. Sacks ◽  
Barış Yıldız ◽  
Servet Özcan ◽  
...  
Keyword(s):  
Mitochondrial Genome ◽  
Phylogenetic Relationships ◽  
Mole Vole

Comparative mitochondrial genome analysis of Pythium insidiosum and related oomycete species provides new insights into genetic variation and phylogenetic relationships

Gene ◽  
2016 ◽  
Vol 575 (1) ◽  
pp. 34-41 ◽  
Author(s):  
Sithichoke Tangphatsornruang ◽  
Panthita Ruang-areerate ◽  
Duangjai Sangsrakru ◽  
Thidarat Rujirawat ◽  
Tassanee Lohnoo ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Mitochondrial Genome ◽  
Genome Analysis ◽  
Phylogenetic Relationships ◽  
Pythium Insidiosum

Whale falls, multiple colonisations of the deep, and the phylogeny of Hesionidae (Annelida)

2015 ◽  
Vol 29 (2) ◽  
pp. 105 ◽  
Author(s):  
Mindi Summers ◽  
Fredrik Pleijel ◽  
Greg W. Rouse
Keyword(s):  
New Species ◽  
Maximum Likelihood ◽  
16S Rrna ◽  
Deep Sea ◽  
Phylogenetic Relationships ◽  
18S Rrna ◽  
Shallow Waters ◽  
28S Rrna ◽  
Mitochondrial Cytochrome ◽  
New Members

Phylogenetic relationships within Hesionidae Grube, 1850 are assessed via maximum parsimony and maximum likelihood analyses of mitochondrial (cytochrome c oxidase subunit I and 16S rRNA) and nuclear (18S rRNA, and 28S rRNA) data. The analyses are based on 42 hesionid species; six of these being new species that are described here. The new species, all from deep (>200 m depth) benthic environments (including whale falls) in the eastern Pacific, are Gyptis shannonae, sp. nov., Neogyptis julii, sp. nov., Sirsoe sirikos, sp. nov., Vrijenhoekia ketea, sp. nov., Vrijenhoekia falenothiras, sp. nov., and Vrijenhoekia ahabi, sp. nov. The molecular divergence among the new members of Vrijenhoekia is pronounced enough to consider them cryptic species, even though we cannot distinguish among them morphologically. Our results also showed that the subfamily Hesioninae Grube, 1850, as traditionally delineated, was paraphyletic. We thus restrict Hesioninae to include only Hesionini Grube, 1850 and refer the remaining members to Psamathinae Pleijel, 1998. The present study increases the number of hesionid species associated with whale falls from one to six and markedly increases the number of described deep-sea hesionid taxa. There appear to have been multiple colonisations of the deep sea from shallow waters by hesionids, though further sampling is warranted.

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.

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