Consulta: creatorFacets:"Mourier, Johann"
Registros recuperados: 7
Data/hora: 11/06/2024 02:35:23

Novel use of pop‑up satellite archival telemetry in sawsharks: insights into the movement of the common sawshark Pristiophorus cirratus (Pristiophoridae)
Provedor de dados: 5
Autores: Burke, Patrick J; Mourier, Johann; Gaston, Troy F; Williamson, Jane E.
Background Understanding movement patterns of a species is vital for optimising conservation and management strategies. This information is often difficult to obtain in the marine realm for species that regularly occur at depth. The common sawshark (Pristiophorus cirratus) is a small, benthic associated elasmobranch species that occurs from shallow to deep-sea environments. No information is known regarding its movement ecology. Despite this, P. cirrata are still regularly landed as nontargeted catch in the south eastern Australian trawl fisheries. Three individuals were tagged with pop-up satellite archival tags (PSATs) off the coast of Tasmania, Australia, to test the viability of satellite tagging on these small elasmobranchs and to provide novel...
Tipo: Text
Palavras-chave: Elasmobranch; Satellite telemetry; Diel vertical migration; Tagging; Pristiophoridae; Australia; Movement.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00632/74399/74101.pdf

Spatial behavior of two coral reef fishes within a Caribbean Marine Protected Area
Provedor de dados: 5
Autores: Garcia, Jessica; Mourier, Johann; Lenfant, Philippe.
A better understanding of the key ecological processes of marine organisms is fundamental to improving design and effective implementation of marine protected areas (MPAs) and marine biodiversity. The movement behavior of coral reef fish is a complex mechanism that is highly linked to species life-history traits, predation risk and food resources. We used passive acoustic telemetry to study monthly, daily and hourly movement patterns and space use in two species, Schoolmaster snapper (Lutjanus apodus) and Stoplight parrotfish (Sparisoma viride). We investigated the spatial overlap between the two species and compared intra-specific spatial overlap between day and night. Presence-absence models showed different diel presence and habitat use patterns between...
Tipo: Text
Palavras-chave: Spatial behavior; Acoustic monitoring; Individual variability; Lutjanus apodus; Sparisoma viride; Martinique.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00270/38159/36294.pdf

A DNA barcode reference library of French Polynesian shore fishes
Provedor de dados: 5
Autores: Delrieu-trottin, Erwan; Williams, Jeffrey T.; Pitassy, Diane; Driskell, Amy; Hubert, Nicolas; Viviani, Jeremie; Cribb, Thomas H.; Espiau, Benoit; Galzin, Rene; Kulbicki, Michel; De Loma, Thierry Lison; Meyer, Christopher; Mourier, Johann; Mou-tham, Gerard; Parravicini, Valeriano; Plantard, Patrick; Sasal, Pierre; Siu, Gilles; Tolou, Nathalie; Veuille, Michel; Weigt, Lee; Planes, Serge.
The emergence of DNA barcoding and metabarcoding opened new ways to study biological diversity, however, the completion of DNA barcode libraries is fundamental for such approaches to succeed. This dataset is a DNA barcode reference library (fragment of Cytochrome Oxydase I gene) for 2,190 specimens representing at least 540 species of shore fishes collected over 10 years at 154 sites across the four volcanic archipelagos of French Polynesia; the Austral, Gambier, Marquesas and Society Islands, a 5,000,000 km(2) area. At present, 65% of the known shore fish species of these archipelagoes possess a DNA barcode associated with preserved, photographed, tissue sampled and cataloged specimens, and extensive collection locality data. This dataset represents one...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00508/61942/66026.pdf

Acoustic accelerometry reveals diel activity patterns in premigratory Port Jackson sharks
Provedor de dados: 5
Autores: Kadar, Julianna; Ladds, Monique; Mourier, Johann; Day, Joanna; Brown, Culum.
Distinguishing the factors that influence activity within a species advances understanding of their behavior and ecology. Continuous observation in the marine environment is not feasible but biotelemetry devices provide an opportunity for detailed analysis of movements and activity patterns. This study investigated the detail that calibration of accelerometers measuring root mean square (RMS) acceleration with video footage can add to understanding the activity patterns of male and female Port Jackson sharks (Heterodontus portusjacksoni) in a captive environment. Linear regression was used to relate RMS acceleration output to time‐matched behavior captured on video to quantify diel activity patterns. To validate captive data, diel patterns from captive...
Tipo: Text
Palavras-chave: Accelerometer; Activity pattern; Diel cycle; Migratory restlessness; Port Jackson shark; Root mean square acceleration.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00508/61990/66104.pdf

Response of blacktip reef sharks Carcharhinus melanopterus to shark bite mitigation products
Provedor de dados: 5
Autores: Thiele, Madeline; Mourier, Johann; Papastamatiou, Yannis; Ballesta, Laurent; Chateauminois, Eric; Huveneers, Charlie.
Globally, the frequency of shark bites is rising, resulting in an increasing demand for shark deterrents and measures to lessen the impact of shark bites on humans. Most existing shark protection measures are designed to reduce the probability of a bite, but fabrics that minimise injuries when a shark bite occurs can also be used as mitigation devices. Here, we assessed the ability of the Ocean Guardian Scuba7 and Kevlar material to reduce the likelihood of blacktip reef sharks, Carcharhinus melanopterus, from feeding, and to minimise injuries from shark bites. Sharks were enticed to consume a small piece of local reef fish (bait) placed between the two Scuba7 electrodes with the deterrents randomly being turned on or kept off. In the second experiment,...
Tipo: Text
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00611/72346/71242.pdf

Preliminary insights into the population characteristics and distribution of reef (Mobula alfredi) and oceanic (M. birostris) manta rays in French Polynesia
Provedor de dados: 5
Autores: Carpentier, Alice S.; Berthe, Cécile; Ender, Isabel; Jaine, Fabrice R. A.; Mourier, Johann; Stevens, Guy; De Rosemont, Moeava; Clua, Eric.
In French Polynesia, both currently recognized manta ray species, Mobula alfredi and M. birostris, are observed. Despite being an important cultural asset and generating significant economic benefits through manta ray watching tourism, published data on the ecology and threats to these species in the region are scarce. Based on an 18-year dataset of sighting records collected by citizen scientists and during two scientific expeditions, this study provides the first insights into the population characteristics and regional distribution of the two manta ray species in French Polynesia. A total of 1347 manta ray photographs (1337 for M. alfredi and 10 for M. birostris) were examined for the period January 2001–December 2017, with photo-identification...
Tipo: Text
Palavras-chave: Site fidelity; Citizen science; Sympatry; Spatial connectivity; Ecotourism management.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00515/62642/69702.pdf

Heterospecific foraging associations between reef‐associated sharks: first evidence of kleptoparasitism in sharks
Provedor de dados: 5
Autores: Labourgade, Pierre; Ballesta, Laurent; Huveneers, Charlie; Papastamatiou, Yannis; Mourier, Johann.
Social foraging allows groups of predators to search for, pursue, and capture prey with greater efficiency than using solitary hunting. It can vary in complexity and take many forms ranging from cooperative hunting, to social information sharing and local enhancement (Lang and Farine 2017). Theoretical and empirical studies support the advantages of group foraging, although there will be trade‐offs between benefits, such as increased prey detection or capture success, and costs such as increased competition amongst group members (Gil et al. 2017).
Tipo: Text
Palavras-chave: Carcharhinus amblyrhynchos; Foraging strategy; French Polynesia; Reef shark; Species interaction; Triaenodon obesus.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00632/74456/74272.pdf