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Benjamin de Montgolfier

Benjamin de Montgolfier
Aquasearch · -Caribbean

PhD

About

28
Publications
3,110
Reads
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129
Citations
Additional affiliations
October 2008 - March 2010
Université du Québec à Rimouski UQAR
Position
  • PostDoc Position

Publications

Publications (28)
Article
Full-text available
Maritime transportation forecasts project an increase in shipping. In this context, interactions with cetaceans are of growing concern especially when relevant biological data are not available to monitor the impacts. The Agoa sanctuary in the Wider Caribbean region faces this situation. To overcome this issue, we used AIS data to estimate three pr...
Article
We provide information on the seabirds occurring year-round in waters of the French Guiana Exclusive Economic Zone, based on data obtained from three boat-based campaigns: a campaign by the Groupe d’Étude et de Protection des Oiseaux de Guyane was conducted for four days every two months from July 2011 to June 2012; a campaign by Cohabys was perfor...
Article
Full-text available
The pantropical spotted dolphin (PSD, Stenella attenuata) is the most common cetacean species observed within the Agoa Sanctuary, located in the Lesser Antilles, Eastern Caribbean. These dolphins are easily observable and are the main target of whale-watching activities along the leeward coasts of Guadeloupe and Martinique islands. Because PSD is c...
Article
Although human activities are developing in French Guiana Exclusive Economic Zone (EEZ) and surrounding countries, knowledge on diversity and ecology of cetaceans in the region is scarce. This study aimed to collect new information on the cetacean species occurring year-round in the entire French Guiana EEZ by combining visual and acoustic data obt...
Article
Chez la Tortue verte (Chelonia mydas (Linnaeus, 1758)), la plupart des estimations d’abondance reposent sur une phase du cycle, la nidification. Or, le suivi des tendances démographiques chez les juvéniles s’avère essentiel pour mettre en œuvre des mesures de gestion précoces. Dans cette étude, nous avons effectué une estimation de l’abondance des...
Article
Full-text available
Dolphins of the genus Stenella occur in pelagic waters of both tropical and warm-temperate oceans. Three species, the Atlantic spotted dolphin (Stenella frontalis), the pantropical spotted dolphin (S. attenuata), and the spinner dolphin (S. longirostris) are abundant worldwide, but in the Caribbean Basin they have been poorly studied and informatio...
Article
Full-text available
A specimen of the Long-snout seahorse (Hippocampus reidi) was photographed in a seagrass 22 bed dominated by the invasive species Halophila stipulacea at 11 m depth, on 9th June 2017, 23 in front of the Madiana beach, Schoelcher, Martinique Island, Caribbean Sea. This brief 24 communication reports the first observation of H. reidi in this exotic e...
Article
Full-text available
Cookie-cutter sharks (Isistius sp.) are small squaloid sharks that live in tropical and sub-tropical oceans. Their name comes from their unique tactic of feeding, which enables them to parasitize marine mega-fauna, like cetaceans. Due to their morphological and anatomical characteristics, they are responsible of crater-like wounds on the skin of ma...
Article
The aim of this study was to evaluate the effect of a dietary highly unsaturated fatty acid (HUFA) deficiency on winter flounder Pseudopleuronectes americanus metamorphosis by examining the growth and the expression of genes involved in some key metabolic processes: lipid digestion, oxidative stress, and growth. Three groups of fish were fed rotife...
Article
The aim of this study was to better understand the molecular events governing ontogeny in winter flounder (Pseudopleuronectes americanus (Walbaum, 1792)). The expression of seven genes involved in key metabolic processes during metamorphosis were measured at settlement (S0), at 15 (S15), and 30 (S30) days after settlement and compared with those in...
Article
Gap junctions are critical for spermatogenesis. They are composed of integral proteins, the connexins. In mammals, a loss of Cx43 expression results in the inhibition of spermatogenesis. We have shown that Cx43 is expressed in the Sertoli cells of rainbow trout and that cAMP and triiodothyronine (T(3)) regulate testicular Cx43 expression in brook t...
Article
Spermatogenesis requires coordinated intercellular communication mediated by gap junctions. Gap junctions are composed of connexons that are themselves composed of connexins (Cxs). The present objective was to determine the regulation of testicular Cxs in a seasonal breeder, the brook trout. To assess seasonal variations in testicular Cxs, trout we...
Article
Gap junctions are essential for spermatogenesis. Exposure to municipal wastewater effluent can modify spermatogenesis in fish. The present aim was to determine if municipal wastewater effluent could alter the expression of testicular connexins (Cxs) in brook trout. Trout were exposed for 4 and 12 weeks to various concentrations of municipal effluen...
Article
Full-text available
Certain fish, such as rainbow trout (Oncorhynchus mykiss), are seasonal breeders. Spermatogenesis in rainbow trout is synchronous; therefore, at any time point during this process, germ cells are predominantly at the same stage of development. As such, rainbow trout represent an excellent model in which to study spermatogenesis. Gap junctions are c...
Article
Abstract Metamorphosis is a critical developmental stage in marine fish species, but mortalities are also elevated at the settling phase. Our objective was to evaluate the effects of different rearing systems and larval diets on survival, general condition and pigmentation of newly settled winter flounder (Pseudopleuronectes americanus) juveniles....

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Projects

Projects (7)
Project
Estuaries are essential habitats for several fish and invertebrate species. Little is known on species using these habitats, and what are the anthropogenic impacts.
Archived project
Assessing cell-cell communication in salmonid testes, in order to better understand gonad maturation. We also studied larval diet and its impact on metamorphosis success in flatfish.