Journal of Molluscan Studies最新文献

{"title":"Response of optic gland pathways to thermal stress in the reproductive phase of female Octopus maya","authors":"Alison Domínguez-Estrada, C. Galindo-Sánchez, Claudia Ventura-López, C. Rosas, Ó. Juárez","doi":"10.1093/mollus/eyac018","DOIUrl":"https://doi.org/10.1093/mollus/eyac018","url":null,"abstract":"\u0000 The octopus optic glands are the source of multiple signalling molecules that control the transitions through different physiological stages, such as maturation, ageing and death. This study focused on the role of the optic glands during the reproductive phase of Octopus maya, investigating the molecular mechanisms that prevent reproduction at elevated temperatures. RNA sequencing was used to analyse and compare optic gland transcriptomic profiles of female O. maya before, during and after egg-laying under optimal and thermal stress (elevated temperature) conditions. Each stage showed well-defined transcriptomic patterns, and all were strongly affected by thermal stress. At optimal temperature, the optic glands contribute importantly to regulating the energetic balance, as suggested by the expression of genes that modulate the metabolic rate, arterial blood pressure and the management of ATP sources in response to food deprivation. At elevated temperatures, the optic glands of mated females (before egg-laying) showed upregulation of genes encoding neuropeptides (FMRF-amide, APGW-amide, PRQFV-amide, FCAP, buccalin and myomodulin) and the dopamine beta-hydroxylase gene. During egg-laying at elevated temperatures, the neuropeptide receptor capaR and the sex peptide receptor were upregulated whereas homologs of fetuin-B and oviduct-specific glycoprotein genes, crucial for fertilization, were downregulated. These changes in optic gland gene expression in O. maya may be the basis for the high-temperature inhibition of egg-laying, previously observed from this octopus species. Furthermore, after egg-laying, during egg incubation thermal stress affected the expression of genes involved in steroid and thyroid hormone biosynthesis and in inflammatory and apoptotic pathways.","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42029294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the morphological impacts of long-term harvesting in intertidal gastropods using historical data and morphometric tools","authors":"D. Doyle, J. Frias, M. Gammell, Michael Lynch, R. Nash","doi":"10.1093/mollus/eyac019","DOIUrl":"https://doi.org/10.1093/mollus/eyac019","url":null,"abstract":"\u0000 Size-selective harvesting of intertidal molluscs is a common practice. However, the effects of long-term traditional harvesting remain unclear. Changes in mean shell size are generally taken as evidence of changes in harvesting intensity. However, mean shell size is also influenced by environmental pressures, which may confound the analysis of size variation over time. In this study, we apply geometric morphometrics to historical data from two shell middens, in an attempt to classify Littorina littorea shells to their environmental origins, prior to carrying out shell size analysis. Using this method, shell shape was found to be consistent within and between the midden sites. Based on comparison with modern populations from shores of known wave exposure, the midden shells were found to be more consistent with sheltered shores, and to differ most from the very exposed shore sites, the latter of which are located adjacent to the midden remains. The mean shell size was significantly smaller in the more recent midden site. We hypothesize this reduction is caused by an increase in harvesting intensity over this period. It is also possible, given the very slight reduction in shell size, coupled with certain life-history traits of L. littorea, that the change in shell size was caused by slight differences in environmental conditions. The use of midden shells and morphometrics has the potential to provide an insight into previous environmental conditions and past harvesting practices, which may be used to inform current harvesting practices.","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48565840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular survey of Cryptoplax japonica (Polyplacophora: Cryptoplacidae) reveals cryptic lineages in the northwestern Pacific","authors":"Jina Park, Yucheol Lee, Taeho Kim, E. Kern, Hyun-Jong Kil, D. Eernisse, H. Saito, Joong-Ki Park","doi":"10.1093/mollus/eyac016","DOIUrl":"https://doi.org/10.1093/mollus/eyac016","url":null,"abstract":"\u0000 The chiton genus Cryptoplax is widely distributed in the Indo-Pacific, extending to southern Australia and the northwestern Pacific (NWP), with 17 recognized species. Among these species, Cryptoplax japonica is commonly found on rocky intertidal and subtidal substrates in the NWP, whereas another species, C. propior, is rarely seen because of its cryptic subtidal habitat and limited distribution. In this study, we surveyed the genetic diversity of C. japonica populations based on 93 individuals from 24 sampling sites along the Korean and Japanese coastlines, including the type locality, using DNA sequences of the mitochondrial gene cytochrome c oxidase subunit I (COI). Haplotype network and phylogenetic analyses of COI sequences revealed two highly divergent genetic lineages of C. japonica separated by a large pairwise genetic distance (10.62%), which was comparable to the genetic difference when either of these two lineages (A or B) is compared with the co-occurring C. propior. In addition to COI sequences, average sequence divergence in 16S rDNA between these three lineages ranged from 2.0 to 3.3%. In contrast to this deep sequence divergence, both morphological examination of radula, girdle and articulamentum colouring, and morphometric analyses of shell measurements using principal component analysis and linear discriminant analysis revealed no diagnostic differences between the two C. japonica lineages. The co-occurrence of these two divergent lineages within most of our studied area, with no morphological differences, indicates cryptic divergence. More extensive sampling from the entire distributional ranges of these cryptic species, in combination with the use of additional molecular markers could shed light on the mechanisms underlying their divergence.","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47507229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Complex Regional Pain Syndrome: Practical Diagnostic and Treatment Guidelines, 5th Edition.","authors":"R Norman Harden, Candida S McCabe, Andreas Goebel, Michael Massey, Tolga Suvar, Sharon Grieve, Stephen Bruehl","doi":"10.1093/pm/pnac046","DOIUrl":"10.1093/pm/pnac046","url":null,"abstract":"<p><p>There have been some modest recent advancements in the research of Complex Regional Pain Syndrome, yet the amount and quality of the work in this complicated multifactorial disease remains low (with some notable exceptions; e.g., the recent work on the dorsal root ganglion stimulation). The semi-systematic (though in some cases narrative) approach to review is necessary so that we might treat our patients while waiting for \"better research.\" This semi-systematic review was conducted by experts in the field, (deliberately) some of whom are promising young researchers supplemented by the experience of \"elder statesman\" researchers, who all mention the system they have used to examine the literature. What we found is generally low- to medium-quality research with small numbers of subjects; however, there are some recent exceptions to this. The primary reason for this paucity of research is the fact that this is a rare disease, and it is very difficult to acquire a sufficient sample size for statistical significance using traditional statistical approaches. Several larger trials have failed, probably due to using the broad general diagnostic criteria (the \"Budapest\" criteria) in a multifactorial/multi-mechanism disease. Responsive subsets can often be identified in these larger trials, but not sufficient to achieve statistically significant results in the general diagnostic grouping. This being the case the authors have necessarily included data from less compelling protocols, including trials such as case series and even in some instances case reports/empirical information. In the humanitarian spirit of treating our often desperate patients with this rare syndrome, without great evidence, we must take what data we can find (as in this work) and tailor a treatment regime for each patient.</p>","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":"52 1","pages":"S1-S53"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9186375/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83093455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predatory suspension feeders: an unusual feeding mode switch in Olivella columellaris (Caenogastropoda: Olividae) and its possible ecological effects","authors":"W. Peters, G. Pastorino, D. Fiege","doi":"10.1093/mollus/eyac017","DOIUrl":"https://doi.org/10.1093/mollus/eyac017","url":null,"abstract":"","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41712472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Worldwide Variation in Cochlear Implant Candidacy.","authors":"Paul Van de Heyning, Javier Gavilán, Benoît Godey, Rudolf Hagen, Abdulrahman Hagr, Mohan Kameswaran, Yongxin Li, Manikoth Manoj, Robert Mlynski, Martin O'Driscoll, Harold Pillsbury, Christopher H Raine, Gunesh Rajan, Joachim Schmutzhard, Hinrich Staecker","doi":"10.5152/iao.2022.21470","DOIUrl":"10.5152/iao.2022.21470","url":null,"abstract":"<p><strong>Background: </strong>The aim of this study was to find out how candidacy criteria have evolved differently across the globe.</p><p><strong>Methods: </strong>Candidacy criteria and outcome measurements applied in 19 HEARRING clinics were analyzed.</p><p><strong>Results: </strong>Candidacy criteria vary between clinics. Overall, both bilateral implantation and cochlear implantation in patients with single-sided deafness are becoming more frequent.</p><p><strong>Conclusion: </strong>Standardized outcome measurement instruments need to be applied to provide access to the hearing world to all patients with hearing loss who would benefit from cochlear implantation.</p>","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":"75 1","pages":"196-202"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10682809/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83115282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seventeen Years of Pediatric Liver Transplantation Experience for Cirrhosis and Hepatocellular Carcinoma.","authors":"Figen Özçay, Oya Balci Sezer, Faik Sarialioğlu, Fatih Boyvat, Mehmet Coşkun, Nihan Haberal Reyhan, Mehmet Haberal","doi":"10.6002/ect.2021.0469","DOIUrl":"10.6002/ect.2021.0469","url":null,"abstract":"<p><strong>Objectives: </strong>This was a retrospective analysis of liver transplant for pediatric patients with liver cirrhosis and hepatocellular carcinoma.</p><p><strong>Materials and methods: </strong>Fourteen pediatric patients with chronic liver disease and hepatocellular carcinoma underwent liver transplant from 2004 to 2021. Preexisting diseases were tyrosinemia (n = 6), progressive familial intrahepatic cholestasis type 2 (n = 2) and type 3 (n = 3), cryptogenic cirrhosis (n = 2), hepatitis B and D (n = 1), and biliary atresia (n = 1).</p><p><strong>Results: </strong>Mean age was 9.43 ± 4.9 years (range, 13 months to 16 years). Three patients had 1 tumor, 4 had 2 tumors, and 7 had multiple (≥3) lesions. Six patients were classified as Pretreatment Extent of Disease Staging System for Hepatoblastoma (PRETEXT) stage IV, 3 as stage II, and 5 as stage I. Some patients received systemic chemotherapy before (n = 4) or after transplant (n = 3) or transarterial chemoembolization and microwave ablation pretransplant (n = 1). Hepatocellular carcinoma posttransplant recurrence was observed at 23, 47, and 108 months in 3 patients (21%). Recurrence sites were omentum (n = 1) and liver graft (n = 2). One patient was treated with hepatic resection, radiofrequency ablation, and radiotherapy, while the other received radiofrequency ablation and chemotherapy for graft tumor recurrence. Relapse-free patient survival rates were 92%, 82.5%, and 72.2% at 2, 4, and 10 years, respectively. Four recipients (28.5%) died; posttransplant cause of death was infection at 19 (n = 1) and 188 months (n = 1) or hepatocellular carcinoma recurrence at 79 (n = 1) and 165 months (n = 1). Median follow-up was 178 months (range, 13-204 months). Mean estimated survival was 171.25 ± 16.6 months. Overall patient posttransplant survival was 100%, 92.3%, 92.3%, 83%, and 72% at 1, 2, 5, 10, and 15 years, respectively.</p><p><strong>Conclusions: </strong>Hepatocellular carcinoma was mainly associated with inherited liver diseases in our pediatric series. Liver transplant provided a long-term survival advantage to pediatric patients with preexisting cirrhosis and hepatocellular carcinoma.</p>","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":"19 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83228713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to \"Pushing barcodes to their limits: phylogenetic placement of Fontigens Pilsbry, 1933 (Caenogastropoda: Littorinimorpha: Truncatelloidea) and elevation of Fontigentidae Taylor, 1966","authors":"Nicholas S. Gladstone, Nathan V. Whelan","doi":"10.1093/mollus/eyac003","DOIUrl":"https://doi.org/10.1093/mollus/eyac003","url":null,"abstract":"Molecular phylogenetics revolutionized the systematics of the megadiverse ‘hydrobioid’ gastropods (i.e. Hydrobiidae sensu lato Davis, 1979) by showing them to be a polyphyletic group within the superfamilies Rissooidea Gray, 1847 and Truncatelloidea Gray, 1840 (Wilke et al. , 2001; Criscione & 2013). Wilke et al. (2013) revealed extensive morphological homoplasy in the hydrobioids and emphasized the need to use molecular data for higher- level classification. This facilitated numerous taxonomic revisions, most of which serve as the current basis of freshwater rissooidean and truncatelloidean taxonomy (Bouchet et al. , 2017; MolluscaBase, 2021a, b). Molecular data have also been integral to recent species descriptions and population-level analyses of hydrobioids (Wilke & Davis, 2000; Haase, 2008; Delicado, Machordom & Ramos, 2012; Osikowski et al. , 2017). However, newly available sequence data have not been synthesized to clarify the still uncertain family-level systematics of some hydrobioids. One such unresolved taxon is the subfamily Fontigentinae which consists only of the Fontigens Pilsbry,","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44138900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"OUP accepted manuscript","authors":"","doi":"10.1093/mollus/eyac015","DOIUrl":"https://doi.org/10.1093/mollus/eyac015","url":null,"abstract":"","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61067961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"OUP accepted manuscript","authors":"","doi":"10.1093/mollus/eyab048","DOIUrl":"https://doi.org/10.1093/mollus/eyab048","url":null,"abstract":"","PeriodicalId":50126,"journal":{"name":"Journal of Molluscan Studies","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61067530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}