Journal of the Marine Biological Association of the United Kingdom最新文献

{"title":"Reproduction of Marphysa sanguinea Annelida, Polychaeta (Eunicidae), at Mount Edgecombe, Plymouth, near the type locality in Southwest England","authors":"Peter J.W. Olive, Perikles Karageorgopoulos, Pat A. Hutchings, Nicolas Lavesque","doi":"10.1017/s0025315423000978","DOIUrl":"https://doi.org/10.1017/s0025315423000978","url":null,"abstract":"<p>The reproductive cycle of <span>Marphysa sanguinea</span> is described for a population at Mount Edgecombe, Plymouth, near the type location in Southwest England, using a data set obtained previously (October 1999 to September 2000). The species is iteroparous without schizogamy, spawning prior to October 1999 and during a short breeding season in 2000 from end August through September. The sexes are separate with a sex ratio of 1:1. Mature oocytes and spawned eggs are 215 <span>μ</span>m in diameter and spermatozoa of the ectaqua sperm type. Mature gametes of both sexes are discharged through paired coelomoducts, and the diploid chromosome number is 28. Proliferation of new coelomic gametes from paired gonads began within a month of spawning and continued for 8–9 months but ovulation was suppressed in June and July. Attempts to undertake fertilisation using spawned oocytes and active spermatozoa were unsuccessful. The size of discharged oocytes suggests a short pelagic larval duration of a few days. This is the first publication about the reproduction of this species, and our results suggest that <span>M. sanguinea</span> is restricted to intertidal areas in SW England, NW France and southern North Sea. The highly synchronised pattern of reproduction observed is not compatible with a quasi-cosmopolitan species range indicating that this species has been mistakenly reported from around the world. Future studies of the genus should combine rigorous taxonomy with observations of reproduction to facilitate comparison among <span>Marphysa spp</span>.</p>","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"14 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009916","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":"New geographical records of 15 reef fish species from Lakshadweep, India","authors":"Alvin Anto, Sandra Babu, Miriam Paul Sreeram, Sreenath K. Ramanathan, Ronald Fricke","doi":"10.1017/s0025315424000055","DOIUrl":"https://doi.org/10.1017/s0025315424000055","url":null,"abstract":"<p>In the present study, 15 new records from Kavaratti Atoll are added to the ichthyofaunal diversity of the Lakshadweep Archipelago and six to the Indian fish fauna based on underwater photographs and videos. Fishes were recorded from both lagoon and forereef areas off Kavaratti. The new records include <span>Cirripectes auritus</span> (Blackflap blenny), <span>Cirripectes polyzona</span> (Barred blenny), <span>Ecsenius bicolor</span> (Bicolor blenny), <span>Glyptoparus delicatulus</span> (Delicate blenny), <span>Amblyeleotris wheeleri</span> (Gorgeous prawn-goby), <span>Eviota punyit</span> (Punyit dwarfgoby), <span>Eviota</span> cf. <span>teresae</span> (Viridescent dwarfgoby), <span>Cirrhitichthys falco</span> (Dwarf hawkfish), <span>Halichoeres leucoxanthus</span> (Canarytop wrasse), <span>Pseudocheilinus evanidus</span> (Disappearing wrasse), <span>Coris latifasciata</span> (Broad banded wrasse), <span>Pomacentrus xanthocercus</span> (Yellowtail damsel), <span>Plectroglyphidodon luteobrunneus</span> (Indian gregory), <span>Pomacentrus indicus</span> (Indian damsel) and <span>Synodus dermatogenys</span> (Sand lizardfish). Six species, <span>G. delicatulus</span>, <span>E.</span> cf. <span>teresae</span>, <span>E. punyit</span>, <span>P. xanthocercus</span>, <span>P. evanidus</span> and <span>C. latifasciata</span> represent new records for Indian waters. The genus <span>Amblyeleotris</span> is recorded for the first time from Lakshadweep.</p>","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"4 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140010022","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":"Reproductive biology and sperm storage characters in two bobtail squid species (Cephalopoda: Sepiolidae)","authors":"Noriyosi Sato, Ryohei Tanabe, Takeru Uezu, Toshiki Matsuoka, Asuka Nakajima","doi":"10.1017/s0025315424000109","DOIUrl":"https://doi.org/10.1017/s0025315424000109","url":null,"abstract":"<p>Bobtail squids (Family Sepiolidae) have a variety of sperm storage patterns, but their reproductive biology has not been studied in many species, especially those in Japanese waters. Two species, <span>Austrorossia bipapillata</span> (Subfamily Rossiinae) and <span>Sepiolina nipponensis</span> (Subfamily Heteroteuthinae) inhabit Suruga Bay in Japan. These were sampled approximately bimonthly by trawling at around 500 m between the end of September, 2020 and May, 2022. They were measured for body size (dorsal mantle length) and weighed for gonadosomatic index (GSI) calculation, and their sperm storage mechanism was investigated. The reproductive season occurs from May to October in <span>A. bipapillata</span> and from December to February in <span>S. nipponensis</span>. In both species, spermatangia were deposited inside the mantle cavity as implanted spermatangia. In <span>A. bipapillata</span>, 5.7 ± 6.5 spermatangia were deeply implanted in the opening of the oviduct, and in <span>S. nipponensis</span> 62.7 ± 61.5 spermatangia were attached to the left gill and surface of the connective-tissue capsule enclosing the digestive gland. The GSI was lower and there were fewer spermatophores stored in the spermatophoric sac of <span>A. bipapillata</span> males compared to <span>S. nipponensis</span>, leading us to suggest that it is exposed to weaker sperm competition than <span>S. nipponensis,</span> irrespective of similar sperm storage mechanism in the two species.</p>","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"21 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140010161","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":"Minke whale entanglement in static fishing gear: identifying consistent areas of high risk in Western Scotland","authors":"Jessica Rayner, Clare B. Embling, Conor Ryan, Lauren Hartny-Mills","doi":"10.1017/s0025315423000930","DOIUrl":"https://doi.org/10.1017/s0025315423000930","url":null,"abstract":"<p>Entanglement in static fishing gear is the largest cause of non-natural mortality for minke whales (<span>Balaenoptera acutorostrata</span>) in Scottish waters. To mitigate whale entanglement, one priority is to identify areas where the risk of entanglement is consistently high. Sightings data for minke whales and creel fleets were collected by the Hebridean Whale and Dolphin Trust, during vessel line transect surveys conducted between 2008 and 2014. Habitat modelling was used to relate survey, environmental, and temporal variables to the co-occurrence of minke whales and creels in coastal waters of western Scotland. This revealed that minke whale occurrence was related to depth, peaking around 70 m. Using predictive habitat modelling, the overlap between minke whale habitat and the creel fishery was measured as risk of entanglement. A method was developed to quantify the consistency of risk over the seven-year time period. This allowed for the identification of areas where there had been a consistently low, medium, or high risk of entanglement from 2008 to 2014. The three areas with a consistent high risk of entanglement were identified: Inner Sound and Sound of Raasay, east of North and South Uist, and north of The Small Isles. The method presented here could be used to guide management to areas where mitigation efforts will be the most consistently effective over time.</p>","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"13 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139969130","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":"Discriminant inter and intrapopulation variation in sagittal otolith shape and morphometry in Chelon ramada (Actinopterygii, Mugilidae) from the Boughrara and El Bibane lagoons in Tunisian waters","authors":"Madel Floriane Adjibayo Houeto, Marwa Mejri, Wided Bakkari, Nawzet Bouriga, Abdellah Chalh, Adel A. A. Basyouny Shahin, Jean-Pierre Quignard, Monia Trabelsi, Abderraouf Ben Faleh","doi":"10.1017/s0025315423000851","DOIUrl":"https://doi.org/10.1017/s0025315423000851","url":null,"abstract":"Variations in sagittal otolith shape and morphometry, including length (<jats:italic>Lo</jats:italic>), width (<jats:italic>Wo</jats:italic>), area (Ao), and perimeter (Po), were investigated in two populations of <jats:italic>Chelon ramada</jats:italic> collected from the Boughrara and El Bibane lagoons located in southeastern Tunisia. The objective was to assess the geographic variation in the sagittal otoliths' shape and morphometry and the effect of potential fluctuating asymmetry (FA) in morphometry on the stock structure of <jats:italic>C. ramada</jats:italic> in the two lagoons to inform on appropriate management procedures. At the interpopulation level, analysis of sagittal otolith shape showed a statistically significant difference (<jats:italic>P</jats:italic> = 0.0001), i.e. there was a bilateral asymmetry, in the shape of left and right otoliths between individuals of the two populations. In addition, significant FA was found only in <jats:italic>Lo</jats:italic> between the left and right otoliths. At the intrapopulation level, a significant shape difference (<jats:italic>P</jats:italic> &lt; 0.0001), particularly asymmetry, was observed in both left and right otoliths between males and females, indicating sexual dimorphism in shape within the Boughrara lagoon. However, significant shape similarity, i.e. symmetry, was observed in the left and right otoliths among individuals of the El Bibane lagoon. Moreover, a significant FA was detected in <jats:italic>Lo</jats:italic> between the left and right otoliths only among males, as well as between males and females of the Boughrara lagoon. However, a significant FA between the left and right otoliths was found only in <jats:italic>Wo</jats:italic> among males and in all morphometric dimensions among females and <jats:italic>Wo</jats:italic> between males and females of the El Bibane lagoon. Discriminant function analysis of the otolith contour shape confirmed the presence of two separate <jats:italic>C</jats:italic>. <jats:italic>ramada</jats:italic> stocks, one corresponding to the Boughrara lagoon and the other representing the El Bibane lagoon, which should be managed separately. The possible cause of morphological variation in the sagittal otoliths' shape and morphometry due to FA between individuals of the two populations was discussed in relation to the biotic and abiotic factors.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"93 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139949709","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":"A review of Eunicoidea (Annelida) from Falkland Islands waters including a new species of Hyalinoecia","authors":"Teresa Darbyshire, Jacob Cameron","doi":"10.1017/s0025315423000966","DOIUrl":"https://doi.org/10.1017/s0025315423000966","url":null,"abstract":"Historic species records of the families Onuphidae and Eunicidae, from the Falkland Islands region, are reviewed and updated, new records added from intertidal and nearshore localities on and around the Falkland Islands, and a new species of <jats:italic>Hyalinoecia</jats:italic> described. Eight genera are reported from around the region including eight taxa of Onuphidae and two of Eunicidae, although most are only known from deep offshore waters. <jats:italic>Kinbergonuphis dorsalis</jats:italic> is re-described from type material, <jats:italic>Kinbergonuphis</jats:italic> sp. from the Falkland Islands is described and discrepancies between the two descriptions are examined. <jats:italic>Hyalinoecia falklandica</jats:italic> sp. nov. is described and the history of the genus and its misidentification in the region is discussed. The new species is distinguished from all other species in the genus through a combination of simple, unidentate falcigers on chaetigers 1 and 2, ventral cirri present to chaetigers 3 or 4, and branchiae present from chaetigers 26 or 27 to the end of the body. The historic record of <jats:italic>Marphysa aenea</jats:italic> from the Falkland Islands is also shown to be a misidentification and the actual, as-yet-undetermined species present is described. Problems surrounding a correct identification of <jats:italic>Marphysa</jats:italic> species, other species that do not quite fit current descriptions, and additional Eunicoidea taxa that might be expected to occur in the region are also discussed.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"173 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139949602","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":"Description of a new species of Pericelis (Polycladida, Diposthidae) from sunken wood in the bathyal zone in Japan","authors":"Yuki Oya, Takeya Moritaki, Aoi Tsuyuki","doi":"10.1017/s0025315424000092","DOIUrl":"https://doi.org/10.1017/s0025315424000092","url":null,"abstract":"We describe <jats:italic>Pericelis nivea</jats:italic> sp. nov. from sunken wood collected 330 m deep, off the coast of Owase, Japan. This is the first record of <jats:italic>Pericelis</jats:italic> from the bathyal zone. Unlike other congeners, <jats:italic>P. nivea</jats:italic> sp. nov. is characterized by the absence of eyespots. We provide a partial sequence of the mitochondrial cytochrome <jats:italic>c</jats:italic> oxidase subunit I gene as a DNA barcode for the new species. Phylogenetic analyses based on concatenated sequences of nuclear 18S and 28S ribosomal DNA showed that <jats:italic>P. nivea</jats:italic> sp. nov. was nested in the clade of <jats:italic>Pericelis</jats:italic> with high support; however, the relationship between <jats:italic>P. nivea</jats:italic> sp. nov. and other <jats:italic>Pericelis</jats:italic> species was unclear.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"12 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139949877","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":"Genetic investigation of Cuvier's beaked whale, Ziphius cavirostris, along the coast of Türkiye and Northern Cyprus, based on mtDNA sequences","authors":"Arda M. Tonay, Kübra Karaman, Ayhan Dede, Erdem Danyer, Işıl Aytemiz Danyer, Begüm Uzun, İlayda Taşkaya, Cengiz Deval, Ayaka Amaha Öztürk, Raşit Bilgin","doi":"10.1017/s0025315424000079","DOIUrl":"https://doi.org/10.1017/s0025315424000079","url":null,"abstract":"The Cuvier's beaked whale, <jats:italic>Ziphius cavirostris</jats:italic>, is a cosmopolitan species and the only beaked whale species commonly found in the Mediterranean Sea. Five strandings of Cuvier's beaked whale were reported along the Aegean/Mediterranean Seas coasts of Türkiye and northern coast of Cyprus in 2016–2017. Mitochondrial DNA (mtDNA) control region (430–444 bp) and cytochrome b (cytb) (382–424 bp) sequences each revealed two different haplotypes (four out of five individuals had the same haplotype for each locus) on these stranded animals. The control region haplotypes were identical to two previously identified haplotypes from the Ionian (Greece) and Adriatic (Croatia) Seas. Only one of the cytb haplotypes had previously been described from the Adriatic Sea (Italy) and the other one was detected for the first time. In a comparison of these haplotypes with Cuvier's beaked whale haplotypes previously reported from outside the Mediterranean Sea, the Mediterranean subpopulation shows genetic differentiation based upon the presence of two unique haplotypes. Additional mtDNA sequences from the Mediterranean Sea are needed for a better understanding of the genetic population structure of this species and to elaborate more concrete conservation measures.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"42 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139949782","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":"Growth assessment of the sea urchin Pseudechinus magellanicus (Temnopleuridae) in coastal habitats of central Patagonia, Argentina","authors":"Damián Gaspar Gil, Héctor Eliseo Zaixso","doi":"10.1017/s0025315424000067","DOIUrl":"https://doi.org/10.1017/s0025315424000067","url":null,"abstract":"<p><span>Pseudechinus magellanicus</span> is an ecologically important and small sea urchin in coastal and nearshore habitats off southern South America. We provide the first growth assessment for the species using tag (calcein) and recapture procedures in central Patagonia (Argentina). The individual growth rate of <span>P. magellanicus</span> ranged 0.05–1.3 mm year<span>−1</span>. The Brody–Bertalanffy and Richards growth models provided asymptotic maximum diameters of 29.89 and 26.01 mm, respectively. Both models yielded low values for the growth constant (<span>k</span>), with 0.046 (Brody–Bertalanffy) and 0.062 (Richards). Maximum instantaneous growth rate was estimated at 1.36 mm year<span>−1</span> for the Brody–Bertalanffy model, and 2.69 mm year<span>−1</span> for the Richards model. Model selection (corrected Akaike information criterion) showed a slight better fit for the Brody–Bertalanffy growth model compared to the Richards model. A significant variability in growth was observed within the studied population, which can be attributed to genetic factors and micro-environmental effects. <span>P. magellanicus</span> displays a combination of slow growth and small body size, with the lowest recorded growth performance index (<span>θ</span> = 3.72) recorded so far in sea urchins. The species has a long lifespan, with the most common adult sizes estimated to range from 15 to 21 years according to the Brody–Bertalanffy model. Due to the broad geographic distribution and occupation of contrasting habitats, further studies are necessary to explore growth of <span>P. magellanicus</span> under different environmental conditions and/or along a bathymetric gradient.</p>","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"38 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139920393","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":"The thermophilic sea anemone Telmatactis cricoides (Cnidaria, Hexacorallia) in the western Mediterranean: filling gaps in the knowledge of the distribution","authors":"Alejandro Martín-Arjona, Anabel Muñoz-Caballero, Alberto Serrano, David Díaz-Viñolas, Javier Urra","doi":"10.1017/s0025315424000043","DOIUrl":"https://doi.org/10.1017/s0025315424000043","url":null,"abstract":"Several individuals of the sea anemone <jats:italic>Telmatactis cricoides</jats:italic> (Duchassaing, 1850) (order Actiniaria) were observed in the Mediterranean continental Spanish coast (Almeria) and the Balearic Islands (Mallorca) showing an expansion of the species, possibly related to rising sea water temperatures. This finding contributes to increase the knowledge on the geographical distribution range of this actiniarian in the Mediterranean basin.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"127 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139920465","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}