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Spatiotemporal dynamics of subarctic intertidal macrobenthos: going their own ways J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-18 Andrey I. Azovsky, Margarita V. Chikina, Mikhail Yu. Kolobov, Andrey D. Naumov, Alexei A. Udalov
Intertidal macrobenthos at the small Chernaya Bight (the White Sea) was surveyed six times during 1993–2018 in order to study spatiotemporal variability. Distributions of sediments and macrophytes were highly variable in both space and time, as were most macrofaunal community attributes. Biomass slightly increased with time, while no long-term trends were found in total abundance, diversity, or functional
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Evidence of distribution overlap between Atlantic and Baltic grey seals J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-15 Anders Galatius, Morten Tange Olsen, Marc Allentoft-Larsen, Jeppe Dalgaard Balle, Line Anker Kyhn, Signe Sveegaard, Jonas Teilmann
Grey seals from both the Atlantic and Baltic Sea subspecies are recovering from dramatic declines and recolonising former ranges, potentially leading to overlapping distributions and an emerging subspecies transition zone in Kattegat between Denmark and Sweden. The two subspecies have asynchronous moulting and pupping seasons. We present aerial survey data from 2011 to 2023 in Danish Kattegat during
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First sightings of mimic octopus Thaumoctopus mimicus (Cephalopoda: Octopodidia) from the Southwest Indian Ocean with photographic records from the Inhambane Province of southern Mozambique J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-15 Andrea D. Marshall, Janneman Conradie, Taryn Gilroy
Two separate sightings, two years apart, of the mimic octopus Thaumoctopus mimicus Norman & Hochberg, 2005 are reported from the Inhambane Province of southern Mozambique within the protected waters of the Vilanculos Coastal Wildlife Sanctuary. Individuals were encountered in May 2020 and 2022 in shallow waters, at a depth of less than 30 cm. Both individuals were fully exposed moving along a sandy
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The first record of the calanoid family Pseudocyclopidae Giesbrecht, 1893 in the South Atlantic Ocean J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-13 Gabriel Bittencourt Farias, Kaio Henrique Farias, Lucas Guedes Pereira Figueirêdo, Sigrid Neumann Leitão, Pedro Augusto Mendes De Castro Melo
Nine hundred and ninety-two (992) specimens of Pseudocyclops lerneri Fosshagen, 1968 (Copepoda: Pseudocyclopidae) were collected from the largest South Atlantic coral reef, Abrolhos bank (17°20′–18°10′S; 38°35′–39°20′W). Specimens were distinguished from other Pseudocyclops spp. by a close examination of the female and male fifth leg. This is the first record of the family Pseudocyclopidae in the South
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An assessment of the utility of green gravel as a kelp restoration tool in wave-exposed intertidal habitats J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-13 Hannah S. Earp, Dan A. Smale, Harry J. N. Catherall, Pippa J. Moore
Kelp forests are being degraded and/or lost in many regions, and as such, interest in active kelp restoration approaches to reinstate forests is growing. ‘Green gravel’ is a promising new kelp restoration technique that involves seeding small rocks with kelp zoospores, rearing the gametophyte and juvenile sporophyte stages in aquaria before outplanting them at restoration sites. However, to be considered
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A new species of Hourstonius (Amphipoda: Amphilochidae) from Todos-os-Santos Bay, Bahia State, Brazil, with an overview of the genus across the globe J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-11 Jessika Alves, Elizabeth G. Neves, Rodrigo Johnsson
Amphilochidae comprises 92 species of small and colourful amphipods that live associated with sessile marine organisms. Hourstonius is one of the most diverse genera with 17 described species, most of the species are recorded from North Temperate Pacific and Tropical Atlantic and live in shallow waters. Only three species of Amphilochidae are recorded in Brazil, and from the genus Hourstonius, there
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Description of a new Luidia species (Asteroidea: Paxillosida: Luidiidae) from Japan with molecular phylogenetic analysis of the genus Luidia J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-05 Itaru Kobayashi, Mai Hibino, Masaki Yamamoto, Toshihiko Fujita
Luidia iwakiensis n. sp. (Asteroidea, Echinodermata) is described in Japanese waters. A molecular phylogenetic analysis including 18 Luidia species supported Döderlein L (1920, Siboga Expedition 4, 193–291) four morphogroups. Morphological reconsideration revealed three of the eight criteria of the morphogroup adopted by Döderlein were justified, but the remaining five characters were rejected. The
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Abnormal symmetric chelipeds in an specimen of snapping shrimp Synalpheus fritzmuelleri Coutiere, 1909 J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-05 Isabela Ribeiro Rocha Moraes, Larissa Zacari, Rafael de Carvalho Santos, Gabriel Fellipe Barros Rodrigues, Antonio Leão Castilho
Morphological symmetry abnormalities in cheliped appendages of alpheid shrimps are extremely rare and poorly recorded in the literature. A symmetric minor cheliped were, for example, observed in queen females belonging to Synalpheus eusocial species. Symmetric major chelipeds were now described in Synalpheus fritzmuelleri individuals living in shallow Brazilian waters. These individuals were found
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First occurrence of ophiuroid-parasitic genus Ophieulima (Mollusca: Gastropoda: Eulimidae) in the North Pacific Ocean J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-05 Tsuyoshi Takano, Hisanori Kohtsuka, Masanori Okanishi
A eulimid gastropod of the genus Ophieulima, parasitic on the disc of the ophiactid brittle star Ophiactis dyscrita, was collected from 256–343 m deep off Kanagawa, central Japan. This represents the first record of the genus from Japanese waters and even from the North Pacific Ocean. Here we describe it as Ophieulima yoshiharai n. sp. The generic assignment is justified by its conchological characters
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Distribution of growth lines in the tube wall of serpulids (Polychaeta, Annelida) J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-05 Olev Vinn
The frequency of growth increments in the tube wall of the Mesozoic and Cenozoic serpulids is in the range of modern species (i.e. 7–37 growth lines per 50 μm). The growth increments of serpulids do not show correlation with the water temperature and presumably cold water and warm water serpulid species are growing on average with similar speed in terms of number of growth lines per 50 μm. The large
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New records and range extension of two deep-sea skate genera, Amblyraja and Notoraja (Elasmobranchii: Rajiformes), in the southeastern Pacific Ocean J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-05 Fabiola Zavalaga, Ignacio Contreras, Sarita Campos-León, Andrey Moreno-Méndez, Maritza Saldarriaga
Two species of deep-sea skates, Amblyraja frerichsi and Notoraja martinezi, are reported for the first time in Peruvian waters, representing the first record of their respective genera from the country. Earlier, A. frerichsi was known from both the southwestern Atlantic (off Brazil, Uruguay, and Argentina) and southeastern Pacific (off Chile), while N. martinezi was known from Costa Rica to Ecuador
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Canid attacks on sea turtles along the Northeastern Brazilian Coast J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-04 Isadora Campos de Almeida, Rafaelle Monteiro Nunes Messenger, Fabiola Fonseca Almeida Gomes, Davi Emanuel Ribeiro de Sousa, Rodolfo de França Alves, Isis Chagas de Almeida, Jociery Einhardt Vergara Parente, Daniel Alvares Silveira de Assis, João Carlos Gomes Borges
The aim of the present study was to report canid attacks on sea turtles in northeastern Brazil. The study was conducted on the Sergipe-Alagoas Basin coastline between March 2010 and October 2019. Injured-stranded sea turtles or carcasses were recorded through systematic beach monitoring. The specimens were submitted for clinical or postmortem assessments, providing evidence for the identification of
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Tonic immobility in a marine isopod: the effects of body size, sex, and colour morph J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-01 Koichi Igarashi, Satoshi Wada
Tonic immobility is considered an anti-predator defence, wherein prey adopts a motionless state in a characteristic posture elicited by external stimuli. The marine isopod Cleantiella isopus exhibits tonic immobility with an arch-like posture and motionless state lasting several seconds or minutes in response to external stimuli such as predatory attacks by fish. In this study, we describe tonic immobility
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New geographical records of 15 reef fish species from Lakshadweep, India J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-01 Alvin Anto, Sandra Babu, Miriam Paul Sreeram, Sreenath K. Ramanathan, Ronald Fricke
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 Cirripectes auritus (Blackflap blenny), Cirripectes polyzona (Barred blenny), Ecsenius bicolor (Bicolor
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Reproduction of Marphysa sanguinea Annelida, Polychaeta (Eunicidae), at Mount Edgecombe, Plymouth, near the type locality in Southwest England J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-01 Peter J.W. Olive, Perikles Karageorgopoulos, Pat A. Hutchings, Nicolas Lavesque
The reproductive cycle of Marphysa sanguinea 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
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Reproductive biology and sperm storage characters in two bobtail squid species (Cephalopoda: Sepiolidae) J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-03-01 Noriyosi Sato, Ryohei Tanabe, Takeru Uezu, Toshiki Matsuoka, Asuka Nakajima
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, Austrorossia bipapillata (Subfamily Rossiinae) and Sepiolina nipponensis (Subfamily Heteroteuthinae) inhabit Suruga Bay in Japan. These were sampled approximately bimonthly by trawling at around 500 m between
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Minke whale entanglement in static fishing gear: identifying consistent areas of high risk in Western Scotland J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-26 Jessica Rayner, Clare B. Embling, Conor Ryan, Lauren Hartny-Mills
Entanglement in static fishing gear is the largest cause of non-natural mortality for minke whales (Balaenoptera acutorostrata) 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
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A review of Eunicoidea (Annelida) from Falkland Islands waters including a new species of Hyalinoecia J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-23 Teresa Darbyshire, Jacob Cameron
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 Hyalinoecia described. Eight genera are reported from around the region including eight taxa of Onuphidae and two of Eunicidae, although most are only known from
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Description of a new species of Pericelis (Polycladida, Diposthidae) from sunken wood in the bathyal zone in Japan J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-23 Yuki Oya, Takeya Moritaki, Aoi Tsuyuki
We describe Pericelis nivea sp. nov. from sunken wood collected 330 m deep, off the coast of Owase, Japan. This is the first record of Pericelis from the bathyal zone. Unlike other congeners, P. nivea sp. nov. is characterized by the absence of eyespots. We provide a partial sequence of the mitochondrial cytochrome c oxidase subunit I gene as a DNA barcode for the new species. Phylogenetic analyses
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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 J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-23 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
Variations in sagittal otolith shape and morphometry, including length (Lo), width (Wo), area (Ao), and perimeter (Po), were investigated in two populations of Chelon ramada 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
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Genetic investigation of Cuvier's beaked whale, Ziphius cavirostris, along the coast of Türkiye and Northern Cyprus, based on mtDNA sequences J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-23 Arda M. Tonay, Kübra Karaman, Ayhan Dede, Erdem Danyer, Işıl Aytemiz Danyer, Begüm Uzun, İlayda Taşkaya, Cengiz Deval, Ayaka Amaha Öztürk, Raşit Bilgin
The Cuvier's beaked whale, Ziphius cavirostris, 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
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Growth assessment of the sea urchin Pseudechinus magellanicus (Temnopleuridae) in coastal habitats of central Patagonia, Argentina J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-22 Damián Gaspar Gil, Héctor Eliseo Zaixso
Pseudechinus magellanicus 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 P. magellanicus ranged 0.05–1.3 mm year−1. The Brody–Bertalanffy and Richards growth models provided
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The thermophilic sea anemone Telmatactis cricoides (Cnidaria, Hexacorallia) in the western Mediterranean: filling gaps in the knowledge of the distribution J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-20 Alejandro Martín-Arjona, Anabel Muñoz-Caballero, Alberto Serrano, David Díaz-Viñolas, Javier Urra
Several individuals of the sea anemone Telmatactis cricoides (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
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Elasmobranch diversity around the southern Caribbean island of Tobago: opportunities for conservation in a regional trade hub J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-19 Neil D. Cook, Gina M. Clementi, Kathryn I. Flowers, Lanya Fanovich, Jo Cable, Sarah E. Perkins, Aljoscha Wothke, Ryan S. Mohammed, Demian D. Chapman
Sharks are scarce in much of the Caribbean due to widespread depletion. Trinidad and Tobago, in the southern Caribbean, is a shark meat consumer and international exporter of dried shark fins. Despite limited fisheries management there is a small Marine Protected Area (MPA; 7 km2) in urbanised southwest Tobago, but its effect on sharks and rays (elasmobranchs) is unknown. The rural northeast is a recently
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The influences of temporal-spatial parameters on CPUE of the Atlantic bluefin tuna purse seine fishery in eastern Mediterranean J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-15 F. Saadet Karakulak, Tevfik Ceyhan
In this study, we applied generalized additive model to investigate the influence of spatial temporal variables and vessel length on catch per unit-effort (CPUE) of Atlantic bluefin tuna (ABFT) purse seine fishery using catch and effort data from commercial logbooks and field surveys from 1992 to 2006. The vessel lengths of sampled purse seines ranged from 20 to 64 m. The number of ABFT caught within
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First record of Ramari's beaked whale Mesoplodon eueu (Cetacea: Ziphiidae) for Uruguay J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-15 Meica Valdivia, Lucía Frones, Emilia Rossini, Paula Laporta, Emma L. Carroll, Michael R. McGowen, Felix G. Marx, Néstor Ríos
We report the first record of Ramari's beaked whale (Mesoplodon eueu) from the temperate Southwestern Atlantic. Our analysis is based on an adult female and a plausibly associated calf/juvenile that stranded on the coast of Canelones Department, Uruguay. The species of the two individuals was identified via a combination of morphometric and molecular mitochondrial data and provide new insights into
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Post-mortem examination on a striped dolphin (Stenella coeruleoalba) reveals a potential fatal interaction with bottlenose dolphins (Tursiops truncatus) in Italian waters J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-13 Davide Ascheri, Elena Fontanesi, Letizia Marsili, Enrica Berio, Fulvio Garibaldi, Maria Goria, Laura Serracca, Alessandro Dondo, Cristina Esmeralda di Francesco, Katia Varello, Cristina Casalone, Federica Giorda, Carla Grattarola
Despite attacks of bottlenose dolphins towards conspecifics and other species of dolphins being reported worldwide, inside the Mediterranean Sea these behaviours are still considered sporadic and have been, to date, only recorded in Spain and France, mostly directed to striped dolphins. In this work, we reported the necropsy outcomes of a dead striped dolphin that suggest a fatal interaction with bottlenose
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Unveiling the wasp-waist structure of the Falkland shelf ecosystem: the role of Doryteuthis gahi as a keystone species and its trophic influences J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-12 Tobias Büring, Jesse van Der Grient, Graham Pierce, Paco Bustamante, Marco Scotti, Jessica B. Jones, Francisco Rocha, Alexander Arkhipkin
The Falkland Shelf is a highly productive ecosystem in the Southwest Atlantic Ocean. It is characterized by upwelling oceanographic dynamics and displays a wasp-waist structure, with few intermediate trophic-level species and many top predators that migrate on the shelf for feeding. One of these resident intermediate trophic-level species, the Patagonian longfin-squid Doryteuthis gahi, is abundant
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Range extension of invasive Cancer irroratus and native Carcinus maenas polewards in the Ascophyllum-dominated intertidal zone in north-west Iceland J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-12 Jón T. Magnússon, Stephen J. Hawkins, Lilja Gunnarsdóttir, Jörundur Svavarsson, Karl Gunnarsson
The rocky intertidal zone of sheltered shores in Breiðafjörður, north-west Iceland is dominated by monospecific stands of canopy-forming brown algae Ascophyllum nodosum, which provide habitat for mobile organisms and has been subjected to long-standing rotational harvesting. We investigated the assemblage composition of little-studied mobile brachyuran crabs in this area, to track distributional shifts
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Opening Pandora's box: diagnostics characters for the confuse taxonomy of the Brazilian Cardiomya (Bivalvia: Cuspidariidae) J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-02-12 Tarcilla Carvalho de Lima, Victor Barreto Braga Mello, Cléo Dilnei de Castro Oliveira
The unsolved systematics of the genus Cardiomya has led to a sequence of astonishing identification mistakes. This scenario is a result of the rarity of specimens and, more importantly, the lack of knowledge about which characters are relevant to the genus taxonomy. In this study, we developed a method based on standard linear discriminant analysis to identify the smallest number of morphological characters
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Meristoderes zmaj sp. n., a new species of Kinorhyncha (Cyclorhagida: Echinoderidae) from the Adriatic Sea J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2024-01-09 Alberto González-Casarrubios, Nuria Sánchez, Diego Cepeda, Fernando Pardos
A new species of the cyclorhagid genus Meristoderes is described. Meristoderes zmaj sp. n. is distinguished from its congeners by its unique arrangement of spines and tubes. It possesses acicular spines on segments 4, 6 and 8 in middorsal position and on segments 6–9 in lateroventral position; and tubes on segment 2 in subdorsal, midlateral and ventrolateral position, on segment 5 in lateroventral
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Opportunistic observation effort and seasonal-spatial fidelity: a qualitative approach, applied to an Orcinus orca first record J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-12-27 Guy E. Melville
This study formulates a qualitative image-based approach to establishing cetacean sightings’ effort at an ecosystem scale in the Gulf of Maine. As a first step, I investigate a rare set of long-term sightings (2008–2017, the study period) of a male killer whale (Orcinus orca) representing unusually consistent occurrences, without considering observation effort. Largely unknown, killer whale populations
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Feeding ecology of the shortfin mako shark, Isurus oxyrinchus, in the Ecuadorian Pacific Ocean J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-12-21 Marcos D. Calle-Morán, Héctor M. Erazo-Garcés, Ana R. Hernández-Téllez, Felipe Galván-Magaña, Colombo Estupiñán-Montaño
Shortfin mako shark, Isurus oxyrinchus, is listed as an endangered species with declining global population. Thus, studies regarding its biology and ecology are important to recommend fishery management and conservation measures. This study aimed to determine the diet composition and feeding habits of I. oxyrinchus in Ecuadorian waters. Samples were obtained from Santa Rosa fishing port (Ecuador).
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First record of Warren's sixgill sawshark Pliotrema warreni (Pristiophoriformes: Pristiophoridae) and the West African catshark Scyliorhinus cervigoni (Carcharhiniformes: Scyliorhinidae) in Namibia, and notes on the habitat of the bull shark Carcharhinus leucas (Carcharhiniformes: Carcharhinidae) J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-12-21 Ruth H. Leeney, David A. Ebert, Kolette Grobler
Warren's sixgill sawshark, Pliotrema warreni, is confirmed for the first time in Namibian waters, from two specimens. One specimen was collected by fisheries observers on a vessel fishing in southern Namibian waters in March 2010. The other was found dead on a beach in central coastal Namibia, in August 2014. The West African catshark, Scyliorhinus cervigoni, is documented for the first time in northern
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An updated checklist of Stomiiformes from Indian waters with nine new records J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-12-11 Rajeev Rajakrishnan, Meleppura Rajeeshkumar, Sherine Sonia Cubelio, Narayanane Saravanane
Over the years as a part of many fishery surveys, considerable number of stomiiform fishes were collected by the Centre for Marine Living Resources and Ecology (CMLRE) Research Vessel ‘Sagar Sampada’. The collection came from throughout the Indian EEZ and some from the western Indian Ocean. However, a systematic identification of these fishes had never been carried out prior to this paper. Thirty-four
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Latitudinal shift of the associated hosts in Sagamiscintilla thalassemicola (Galeommatoidea: Galeommatidae), a rare ectosymbiotic bivalve that lives on the proboscis of echiuran worms J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-12-06 Ryutaro Goto, Taigi Sato, Hiroki Nakajima, Takahiro Sugiyama, Hiroshi Ishikawa
Sagamiscintilla thalassemicola (Bivalvia: Galeommatoidea: Galeommatidae) is a rare ectocommensal bivalve that lives on the proboscis of echiuran worms, Anelassorhynchus spp. (Annelida: Thalassematidae: Thalassematinae: Thalassematini), and has been known only from the temperate zones of Japan. In this study, we found S. thalassemicola on the proboscis of the large echiuran Ochetostoma sp. (Thalassematidae:
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The first validated record of Epinephelus areolatus (Forsskål, 1775) (Perciformes: Serranidae) from Syrian marine waters J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-11-28 Mohamad Hassan, Alaa Alchikh Ahmad
Here, we report the first validated record of the non-indigenous grouper species Epinephelus areolatus (Perciformes: Serranidae) along the Mediterranean coast of Syria. A single specimen of E. areolatus (Forsskål, 1775), was found on 29 September 2021 during a recurrent ichthyological survey, in a rocky habitat from the Mediterranean coast of Syria. This represents the first confirmed record of this
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Impact of historic sediment characterisation on predicting polychaete distributions: a case study of so-called muddy habitat shovelhead worms (Annelida: Magelonidae) J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-11-24 Kimberley Mills, Kate Mortimer
Shovelhead worms are common polychaetes around the British Isles and have been recorded in numerous ecological surveys. Yet, understanding of their habitat conditions is poor, based heavily on visual observations of sediments from historical records. In this study, the drivers of abundance and geographical distribution of two morphologically and behaviourally diverse species Magelona alleni and Magelona
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Clogging nets-Didemnum vexillum (Tunicata: Ascidiacea) is in action in the eastern Mediterranean J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-11-21 Melih Ertan Çinar, Aytaç Özgül
Didemnum vexillum is an aggressive, rapidly growing colonial ascidian and regarded as a global alien invasive species in temperate waters. It has recently become established in the western Mediterranean and the vectors of its introduction were assumed to be shipping or oyster trade. A dense settlement of it was encountered on nets of the bluefin tuna (Thunnus thynnus) cages placed at 60–65 m depths
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First mesophotic Ecklonia radiata (Laminariales) records within the iSimangaliso Wetland Park marine-protected area, east coast, South Africa J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-11-21 Welly Qwabe, Toufiek Samaai, Jean M. Harris, Ryan M. Palmer, Sven E. Kerwath
A dense Ecklonia radiata (Laminariales) kelp forest extending at least 35 km has been found between 45 and 60 m depth range within the mesophotic zone inside the iSimangaliso marine-protected area (MPA) at the iSimangaliso Wetland park World Heritage Site on the east coast of South Africa. This is the first visual confirmation of the occurrence of E. radiata beds in subtropical South Africa, in an
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Biological observations and new maximum reported sizes for two threatened rays: ornate eagle ray Aetomylaeus vespertilio and mangrove whipray Urogymnus granulatus from the Gulf of Mannar, India J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-11-21 Remya Lalitha, Sujitha Thomas, Shoba Joe Kizhakudan, Thirumalaiselvan Shanmugam, Gandhi Ayyakannu, Midhun Muthayan, Rajkumar Raja, Vetrivel Vedhagiri, Rajendran Umayan, Shanmuganathan Kalimuthu, Prakash Murugesan
Record-sized specimens of the ornate eagle ray Aetomylaeus vespertilio and mangrove whipray Urogymnus granulatus were caught by single-day trawlers off Pamban Island in the Gulf of Mannar, Tamil Nadu, India during 2021 and 2022. All were landed at the Pamban Therkuvadi Fish Landing Centre (FLC). The largest ornate eagle ray was 384 cm disc width (DW) and weighed 530 kg, setting a new global record
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Species identification and genetic relationships in the squid family Gonatidae (Teuthida, Cephalopoda) based on partial sequencing of mitochondrial and nuclear genes J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-11-03 Oleg N. Katugin, Anna O. Zolotova
Squids of the family Gonatidae are key components in oceanic communities. However, issues related to correct species identification, number of species, and their genetic relatedness remain. To address these issues, sequences from three mitochondrial (cytochrome c oxidase subunit I [CO1], 16S rRNA, and 12S rRNA) and two nuclear (18S and 28S) genes were analysed in the Gonatidae. Four of the five sequences
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Diet and food assimilation of the Plata pompano Trachinotus marginatus Cuvier, 1832 in a subtropical sandy beach inferred by stomach content and stable isotope analyzes J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-31 Ana Luíza Santos Araújo, Adna Ferreira Silva Garcia, Edélti Faria Albertoni, Leonir André Colling, João Paes Vieira, Alexandre Miranda Garcia
Investigating trophic linkages sustaining consumers is crucial to understanding their functional ecological role in communities and ecosystems. In this work, we combined stomach content (SCA) and stable isotope (SIA) analyses to investigate the trophic ecology of the Plata pompano Trachinotus marginatus during a critical phase of its life cycle along a subtropical sandy beach. This species is a conspicuous
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An individual based model of female brown crab movements in the western English channel: modelling migration behaviour J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-25 Paul J B Hart, Emma Pearson, Ewan Hunter
An individual based model (IBM) of the female brown crab Cancer pagurus population exploited off South Devon, UK is described. Size dependent movement rules are ascribed to individuals based on previous observations of predominantly westward migration down the English Channel. Two additional versions of the movement rules explored whether the empirically derived rule was necessary to model the temporal
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Size-dependent predation on juvenile sandfish, Holothuria scabra by seagrass-associated crabs J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-23 Olivier Josh C. Caasi, Louis A. Gosselin, Marie Antonette Juinio-Meñez
High mortality of juvenile Holothuria scabra in seagrass nursery areas has been attributed to predation. In this study, laboratory and field experiments were conducted to determine the effect of the size of two seagrass–associated crabs, Thalamita crenata and Dardanus megistos, on the survival of juvenile sandfish at different sizes (1–10 g). Small juvenile sandfish (1–2 g) offered in field trials
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First record of the Atlantic soft pout Melanostigma atlanticum (Teleostei, Zoarcidae) in the eastern Mediterranean Sea J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-18 Apostolos Siapatis, Konstantinos Markakis, Konstantinos Tsagarakis
This paper reports the first record of the Atlantic soft pout Melanostigma atlanticum Koefoed, 1952, from the eastern Mediterranean Sea. The specimen was caught in a pelagic trawl during a research trip carried out north of the island of Crete (Greece) in December 2019. The fish measured 66.1 mm in total length and weighed 0.810 g. The presence of M. atlanticum in the eastern Mediterranean Sea indicates
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Pea crabs (Pinnotheres pisum) colonisation of five commercial bivalve species from southern Portugal J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-18 Lídia Nicolau, Paulo Vasconcelos, Fábio Pereira, André N. Carvalho, David Piló, Miguel B. Gaspar
This study reports the spatial and depth distributions, occurrence and prevalence, infestation rate and intensity of the pea crab Pinnotheres pisum colonising five commercial bivalve species (Chamelea gallina, Donax semistriatus, Donax trunculus, Donax vittatus, and Spisula solida) along the south and southwest coasts of Portugal. In addition, the study also analysed the colonisation pattern, morphometric
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Photographic evidence from a recreational angler of the northernmost record of the bull shark Carcharhinus leucas (Elasmobranchii: Carcharhinidae) in the western Pacific Ocean J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-12 Yukiya Ogata, Atsunobu Murase
Photographs of a single shark specimen (1040 mm in total length) caught in the Oyodo River estuary, Miyazaki Prefecture, Kyushu, Japan, by a recreational angler and uploaded to the social networking service Facebook, were identified as a juvenile specimen of the bull shark Carcharhinus leucas. The photographic record, now deposited in the Kanagawa Prefectural Museum of Natural History collection, represents
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The area south of the Po River delta (Italy) is a hot spot for strandings of loggerhead sea turtles J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-12 Luca Marisaldi, Andrea Torresan, Andrea Ferrari
The northern Adriatic Sea is an important foraging ground for the loggerhead sea turtle Caretta caretta (Linnaeus, 1758) within the Mediterranean Sea. Here, stranding patterns of loggerhead sea turtles were examined over a four-year period (2019–2022) along a short (17 km) stretch of the Italian coast south of the Po River delta. A total of 355 records (alive, n = 24; dead, n = 331) were analysed,
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The odd octopus: identification and burrowing behaviour of a deep-water octopus, Muusoctopus leioderma, found in a shallow-water bay J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-04 Lydia G. Kore, Bobbi M. Johnson, Misa Winters, Kirt L. Onthank
Cephalopod populations have expanded over recent decades, both numerically and geographically. These expansions are particularly noteworthy because cephalopods are a taxon of quickly reproducing, high-metabolic rate predators that can have disproportionate impacts on naïve ecosystems. We report a new occurrence of an octopus species in 11.6 m of water in Burrows Bay, Washington, USA (coastal northeast
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Molecular evidence for the first records and range extension of the great seahorse (Hippocampus kelloggi, Jordan & Snyder, 1901) in Quelimane, central coast of Mozambique J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-03 Valdemiro Muhala, Aurycéia Guimarães-Costa, Isadola Eusébio Macate, Luciana Watanabe, Rodrigo Petry Corrêa de Sousa, Guilhermina Rocha, Jeferson Carneiro, Marcelo Vallinoto, Iracilda Sampaio
The family Syngnathidae contains 52 seahorse species, which inhabit a range of habitats including coral reefs, seagrass beds and coastal estuaries. The seahorse Hippocampus kelloggi is among the most widely distributed species, occurring from Indo-West Pacific to East Africa. This species was included in the IUCN Red List in 2017 and is classified as vulnerable according to A2cd criteria. In this study
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A new record of a white humpback whale (Megaptera novaeangliae) in Papeete, Tahiti J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-10-03 Joëlle De Weerdt
A new record of a white humpback whale (Megaptera novaeangliae) was made off Papeete, Tahiti in July 2019. The individual was completely white, except for grey patterns on its body and on the ventral part of the fluke. The presence of different colourations indicates that this individual is not an albino but a leucistic individual. According to field observations, the individual was likely a juvenile
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New contributions to the subfamily Polycerinae (Nudibranchia, Polyceridae): description of three new species and one new genus J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-09-26 Marta Pola, María Miguel-González, Sofía Paz-Sedano
The subfamily Polycerinae includes eight genera, from the monospecific Lamellana and Lecithophorus to the diverse Polycera and Gymnodoris, with 33 and 26 valid species, respectively. The monophyly of the subfamily has been tested by molecular data although not all genera were included. To date, relationships within the subfamily are not supported. In the present paper, three new species of polycerid
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Effect of sediment on meiofauna and Nematoda structure in different freshwater Amazon environments under the influence of mesotides J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-09-22 Tereza Beatriz Lima dos Santos, Erivaldo Baia, Virag Venekey
The present study investigated the horizontal and vertical distribution of meiofauna community and Nematoda assemblages on two sandy beaches and two muddy tidal flats in a freshwater Amazon estuary governed by mesotides. Meiofauna density was significantly higher in muddy environments, explained by the higher food availability. On the one hand, there was no difference between sediment layers in both
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Description of two new species, Microlaimus paraaffinis sp. nov. and Pseudomicrolaimus major sp. nov. (Nematoda: Microlaimidae), from Yangma Island, the Yellow Sea, China J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-09-18 Wen Guo, Mengna Wang, Chunming Wang
Two new species of Microlaimidae: Microlaimus paraaffinis sp. nov. and Pseudomicrolaimus major sp. nov. are described from Yangma Island, the Yellow Sea. M. paraaffinis sp. nov. is characterized by body length 662–785 μm, six inner and six outer labial sensilla papilliform, four short cephalic setae 3–4 μm in length, amphidial fovea cryptocircular at level of buccal cavity, spicules L-shaped with equal
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Spatial and seasonal changes in microphytoplankton and ciliate communities in a stressed area of the southeastern Mediterranean coast (Tunisia) J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-09-15 Amira Rekik, Marc Pagano, Habib Ayadi, Wassim Guermazi, Jannet Elloumi
The spatial and seasonal variability of the microphytoplankton and ciliates communities in relation to the environmental factors were studied in the southern coastal area of Sfax. Results revealed a striking difference between seasons regarding pH, with strong acidification in autumn generated by industrial activity. Spatial distribution of pH in autumn impacted the microorganisms in different ways:
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Bycatch in an experimental fishery for Patagonian toothfish (Dissostichus eleginoides, Nototheniidae) in Ecuadorian oceanic waters J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-09-15 René Zambrano, Dialhy Coello, Marco Herrera
The objective of this paper was to characterize bycatch in an experimental fishery for Patagonian toothfish in Ecuador during 2017–2021. Diversity was analysed using Shannon, Margalef, Simpson, and Dominance indices. Bycatch representativity was calculated as the difference percentage between the target catch and non-target, in weight. The bycatch comprised 51 taxa and was composed primarily of fish
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Species composition and biogeographical affinities of polychaetes (Annelida) from the southern Mexican Pacific shelf J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-09-15 Pablo Hernández-Alcántara, Francisco F. Velasco-López, Benjamín Quiroz-Martínez, Vivianne Solís-Weiss
Polychaetes from tropical ecosystems of the eastern Pacific have been poorly studied; thus, the aim of this study was to analyse their taxonomic composition in the southern Mexican Pacific shelf and to examine their biogeographic affinities. A total of 3741 specimens from 82 species, 52 genera, and 27 families were identified from 38 stations at 42–109 m depth. The Sedentaria group was more diverse
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Exploring the diversity of the deep-sea shrimp in the ‘Glyphocrangon spinicauda A. Milne-Edwards, 1881’ species group (Decapoda, Crustacea, Glyphocrangonidae) off Taiwan and Dongsha J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-09-15 Su-Ching Chang, Chien-Lin Chen, Jing-Yi Chen, Tomoyuki Komai
Examination of the material collected by Taiwan deep-sea cruises reveals the presence of five species of the deep-sea shrimp genus Glyphocrangon A. Milne-Edwards, 1881, representing new records for Taiwan and Dongsha (Pratas Island; under jurisdiction of Taiwan). These species are Glyphocrangon albatrossae, G. caecescens, G. indonesiensis, G. major and G. proxima, all of which belong to the informal
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An improved cultivation device for appendicularians with notes on the biology of Fritillaria sp. collected in Sagami Bay, Japan J. Mar. Biol. Assoc. Uk (IF 1.2) Pub Date : 2023-09-13 Riki Sato
To cultivate zooplankton species with highly fragile mucoid structures, a new type of cultivation device was developed, which uses a novel method to gently circulate the water in the culture vessel. Using this device, a species of the fritillarid appendicularia (Fritillaria sp.) collected in Sagami Bay was successfully cultivated. This form resembles Fritillaria haplostoma or Fritillaria formica tuberculata