Article
Multidisciplinary Sciences
Atsushi Nanami
Summary: This study investigated the ecological characteristics of fish aggregations of two snapper species. It found that the formation of fish aggregation had seasonal and lunar-phase periodicity and was associated with reproductive purposes. The study also revealed spatial variations in fish density within the aggregation site and significant differences in fish abundance inside and outside the aggregation site. These findings suggest that the fish aggregations can be regarded as spawning aggregations.
Article
Multidisciplinary Sciences
Victoria E. Simons, Kathryn J. Coyne, Mark E. Warner, Margaret M. Dolan, Jonathan H. Cohen
Summary: The algicide IRI-160AA had varying effects on different developmental stages of copepods, crabs, and oysters, with more significant impacts on first-stage crab zoeae. Overall, the non-target organisms were tolerant to the algicide at concentrations required for dinoflagellate mortality.
SCIENTIFIC REPORTS
(2021)
Article
Fisheries
Emily Slesinger, Olaf P. Jensen, Grace Saba
Summary: Ocean warming is causing fish species to shift their ranges poleward, impacting the spawning phenology and reproductive output of black sea bass populations in different distributional ranges. Results show that northern populations of black sea bass have shorter spawning seasons and lower reproductive output compared to populations in their historic range.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Marine & Freshwater Biology
Scott C. Burgess, Marilia Bueno
Summary: The study found that the growth rate of marine bryozoans is not simply dependent on body size, but directly affects variation in fitness, especially in terms of the impact of early juvenile growth and growth rate just prior to reproduction on fitness.
Article
Veterinary Sciences
Kazuyuki Momota, Hiroyuki Doi, Hiroshi Obata, Harumi Sakai
Summary: To develop breeding techniques for Tetraodon schoutedeni and study tandem spawning, captive individuals were monitored. Eight spawning sessions occurred between May 2016 and November 2017, with stable water temperature and daily light period. After tandem swimming, 3-50 weakly adhesive eggs were spawned onto substrate or plants. Successful breeding required the removal of cohabitants and provision of small initial food for larvae.
Article
Multidisciplinary Sciences
Oshrat Ben-Hamo, Ido Izhaki, Rachel Ben-Shlomo, Baruch Rinkevich
Summary: Through studying a population of Botryllus schlosseri, researchers discovered three co-existing novel life-history strategies that are achieved through colonial fission. These strategies originate from a stable environment and exhibit high within-strategy variation in traits. Six traits showed significant differences among the strategies.
SCIENTIFIC REPORTS
(2022)
Article
Fisheries
Sergio L. Araujo-Silva, Raoani C. Mendonca, Douglas C. Mattos, Rafael O. J. Sales, Monica Y. Tsuzuki
Summary: The Brazilian basslet is an important ornamental fish species for the fish market. Keeping them in pairs is recommended due to their aggressive behavior. These fish prefer building nests using macroalgae of the genus Chaetomorpha and synthetic materials. The courtship behavior of captive Brazilian basslet is described as 'U-turn with body quivering' and is similar to that of the Gramma loreto in a natural habitat.
MARINE AND FRESHWATER RESEARCH
(2021)
Article
Biology
Yuxin Liu, Xiaolong Du, Guopan Li, Yingbao Liu, Shaobin Li
Summary: This study aimed to understand the variation in egg and clutch mass among coexisting bird species at high altitudes. The results showed that both egg and clutch mass were related to body mass across species. Contrary to the hypothesis of a trade-off between egg mass and clutch size, egg mass variation was not explained by clutch size when considering allometric effects. Clutch mass was positively associated with parental care and negatively associated with predation rate. When considering clutch size and egg mass together, clutch size was significantly correlated with parental care, predation rate, and lifespan, while egg mass was only associated with development period.
Article
Biodiversity Conservation
James T. Carlton
Summary: The register of global extinctions of marine invertebrates in historical time has been updated, with three gastropod and one insect species removed from the list, while two gastropods, one echinoderm, and three parasites have been added. The nine extinct marine invertebrates now recognized likely represent only a small fraction of the actual number of extinctions. Urgent inventories of globally missing marine invertebrates across a wide range of phyla are needed for evaluation.
Article
Biology
Irun R. Cohen, Assaf Marron
Summary: The continuity and evolution of life are the result of interactive group processes in networks of interaction. This process, termed survival of the fitted, is driven by natural autoencoding, which retains repeated biological interactions and eliminates non-repeatable ones.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Plant Sciences
Leonardo Llorens, Joan Tomas, Pere Ferriol, Maria Trinitat Garcia, Lorenzo Gil
Summary: This study investigates the relationship between plant and pollinators in the Mediterranean region, focusing on two asparagus species, A. acutifolius and A. albus. The study identifies the floral scents of these species and examines their impact on pollinator attraction. The results show that each species has a distinct aroma profile, with some shared compounds. The study also highlights the importance of intense floral scents in attracting pollinators. Additionally, the study reveals the unique reproductive dynamics of A. acutifolius, which influences the behavior of both species.
Article
Environmental Sciences
Marie V. Brasseur, Dominik Buchner, Leoni Mack, Verena C. Schreiner, Ralf B. Schaefer, Florian Leese, Christoph Mayer
Summary: Our study used transcriptomic data to identify the effects of multiple stressors and explore the molecular mechanisms underlying stressor-induced physiological responses. By doing so, we can assess stressor effects at the molecular level to understand the modes of action of chemicals and their interactions with non-chemical stressors. We demonstrated that stressor effects vary between different organismic groups, and insecticide effects are not necessarily in line with their described mode of action, which has important implications for environmental risk assessment of insecticides in non-target organisms.
ENVIRONMENTAL SCIENCES EUROPE
(2023)
Article
Environmental Sciences
Maria Valeria Fernandez, Patricio J. Macchi, Alejandro Sosnovsky, Eduardo E. Zattara, Mailen E. Lallement, Daniela Milano
Summary: Habitat fragmentation and loss are global threats to freshwater biodiversity. The study in Patagonian lakes revealed that Creole perch spawn in shallow areas two days before the full moon, shedding light on important conservation implications.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2021)
Article
Fisheries
Chengyan Han, Hee-Jin Kim, Yoshitaka Sakakura, Atsushi Hagiwara
Summary: High concentrations of NH3-N suppress rotifer growth and reproduction, with tropical rotifers showing higher tolerance to ammonia exposure and more active anti-stress strategies compared to temperate rotifers. The findings suggest specific ammonia sensitivity between tropical and temperate rotifer species, with the tropical species exhibiting stronger ammonia tolerance, supporting high-density endurance during mass culture.
Article
Ecology
Shannon R. Mendt, Louis A. Gosselin
Summary: Insufficient energy reserves are not the primary cause of high mortality rates in benthic marine invertebrates during the early benthic phase, as previously hypothesized. However, energy reserves do influence growth, potentially leaving individuals vulnerable for longer periods.
ECOLOGY AND EVOLUTION
(2021)
Article
Fisheries
Bruno L. Gianasi, Jean-Francois Hamel, Annie Mercier
Article
Ecology
Jean-Francois Hamel, Jiamin Sun, Bruno L. Gianasi, Emaline M. Montgomery, Ellen L. Kenchington, Benoit Burel, Sherrylynn Rowe, Paul D. Winger, Annie Mercier
JOURNAL OF ANIMAL ECOLOGY
(2019)
Article
Fisheries
Bruno L. Gianasi, Jean-Francois Hamel, Annie Mercier
Article
Oceanography
Jean-Francois Hamel, Vonda E. Wareham-Hayes, Annie Mercier
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2020)
Article
Reproductive Biology
Arlenie Rogers, Jean-Francois Hamel, Junior Quetzal, Annie Mercier
Summary: Information on newly settled juveniles and recruitment processes in sea cucumbers is limited for most commercial species, hindering the protection of nursery habitats. The ecology of early life stages of Holothuria floridana was investigated, revealing a unique facultative offspring-adult association. This uncommon reproductive feature may ensure successful local recruitment in highly competitive habitats of the tropical Americas.
INVERTEBRATE REPRODUCTION & DEVELOPMENT
(2021)
Review
Marine & Freshwater Biology
Fanny Volage, Jean-Francois Hamel, Annie Mercier
Summary: This study investigated the population structure, habitat selection, diet, and feeding strategies of Ophiopholis aculeata in shallow inshore habitats and deeper offshore locations in eastern Canada. The research revealed that factors such as native depth and habitat are related to variable population size structures and abundances, diversified food sources, and feeding strategies. It also emphasized the importance of considering sex and life stage as driving factors in studies on the feeding biology of brittle stars.
INVERTEBRATE BIOLOGY
(2021)
Article
Oceanography
Noe Wambreuse, Jean-Francois Hamel, Annie Mercier
Summary: Deep-sea pycnogonids host a diverse and abundant epibiotic community, with the burden of epibionts varying with sex and reproductive state, playing a potentially important role in benthic communities.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2021)
Article
Oceanography
Jiamin Sun, Jean-Francois Hamel, Violaine Shikon, Edison F. Cossignani, Annie Mercier
Summary: The study revealed that three species of sea anemones have different dietary sources and feeding habits, with Urticina sp. primarily relying on more energetic and larger prey, while A. cristata targeting smaller zooplankton, foraminifera and particulate food.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2022)
Article
Reproductive Biology
Jean-Francois Hamel, Annie Mercier
Summary: This study examines how the larval stage of the sea cucumber species Isostichopus fuscus can adapt to suboptimal temperature conditions through a form of dormancy. The findings suggest that the larvae have the ability to withstand prolonged periods of suboptimal oceanic conditions until they can successfully settle in suitable inshore locations. This plasticity in larval development highlights the adaptability of certain species to environmental variability.
INVERTEBRATE REPRODUCTION & DEVELOPMENT
(2022)
Article
Microbiology
Heather D. Penney, Sandrine Baillon, Jean-Francois Hamel, Julien Pete, Annie Mercier
Summary: Members of the family Lamippidae are obligate endoparasitic copepods that typically associate with octocorals. This study examined the association between Lamippe bouligandi and its bathyal sea pen host Anthoptilum grandiflorum. Detailed analysis of female copepod morphology and digestive organs provided insights into feeding strategy and host relationship, while a preliminary overview of the male was presented for the first time. Histology, scanning electron microscopy, and laboratory monitoring were used to elucidate various aspects of its life history, including the reproductive cycle, brooding strategy, and embryonic and larval development.
Article
Fisheries
Sara Jobson, Jean-Francois Hamel, Annie Mercier
Summary: This study compared the cellular immune features of echinoderms from different classes, revealing that coelomocyte aggregate formation is a conserved immune response across all five extant classes. The study also identified differences in cell composition, morphological characteristics, and color of the aggregates.
FISH & SHELLFISH IMMUNOLOGY
(2022)
Article
Marine & Freshwater Biology
Jean-Francois Hamel, Sabine Stohr, David Cote, Kaitlin Casey, Heather D. Penney, Barbara de Moura Neves, Annie Mercier
Summary: This paper reports the first records of the brittle star Ophiactis abyssicola in Canadian waters and the range extension up to 1900 km in the Northwest Atlantic from previously known locations. Samples were collected at depths of 433 and 1097 m off northern Labrador and the northern portion of insular Newfoundland, respectively. This newly recorded species from the bathyal zone contributes to the marine biodiversity of Canada and adds to the general distribution knowledge of O. abyssicola.
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
(2021)
Correction
Biology
Jiamin Sun, Jean-Francois Hamel, Bruno L. Gianasi, Annie Mercier
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Biology
Brittney Stuckless, Jean-Francois Hamel, Jacopo Aguzzi, Annie Mercier
Summary: This study investigated competitive behaviors among four co-existing deep-sea invertebrate species through time-lapse video recordings and measured food approach and consumption dynamics. The results showed that larger or faster individuals do not always outcompete smaller or slower ones. Additionally, some species change their foraging based on competitive pressure. Overall, this study provides important baseline ecological information on the feeding strategies and behavioral relationships of co-existing deep-sea invertebrates.
Review
Ecology
Camilla Parzanini, Christopher C. Parrish, Jean-Francois Hamel, Annie Mercier