C.F.E. Roper’s scientific contributions

... During the 7-day experimental period, the razor clams in each salinity group were kept in the same environment as in the acclimation step, including ambient temperature, natural light, feeding, and water replacement. At the end of the experimentation period, the clams were euthanized using a cooling method for 10 min until there was no movement (Cooper 2001;Roper and Sweeney 1983). The hemolymph samples for osmolality were collected using a 29Gx ½' (0.33 × 13 mm) needle attached to a syringe through the adductor muscle sinus (pedal sinus). ...

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Physiological Effects of Salinity on the Osmotic Properties and Oxidative Stress Responses of the Razor Clam Solen regularis in Don Hoi Lot, Thailand

... Forage fish play a pivotal role in marine ecosystems and are highly valuable worldwide, both directly as a landed commodity and indirectly as prey for other harvested species (Hunsicker et al., 2010;Pikitch et al., 2014). Squid (Cephalopoda: Loginidae) plays a critical role in sustaining trophic webs, is fast growing, has a short life span, lives in warm continental shelf waters, is a highly reproductive species, and is sensitive to changes in ambient oceanic variables, which result in its wide distribution in the Pacific Ocean from the South China Sea to Japan and through the Java Sea and coastal waters of Indonesia, Malaysia, and Thailand as well as the waters of the tropical and equatorial regions of Latin America (Roper et al., 1984;Liao et al., 2006;Wang et al., 2021;Fang et al., 2023). These characteristics rapidly increase the population size of this commercially important species in suitable habitats. ...

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Modeling of swordtip squid (Uroteuthis edulis) monthly habitat preference using remote sensing environmental data and climate indices

... Fine sediments are also common in the study area off southern New England, where tidal currents slow significantly and allow silts and clays to settle out and mix with sand [37]. Hard bottom habitats consisting of gravel, cobble, or boulders, while limited in their spatial distribution over this region, are known to support a diverse and abundant assemblage of economically important resources, including American lobsters (Homarus americanus) [38], longfin squid (Loligo pealei) [39,40], and Atlantic cod (Gadus morhua) [41]. ...

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Mapping Seafloor Sediment Distributions Using Public Geospatial Data and Machine Learning to Support Regional Offshore Renewable Energy Development

... Cephalopods (class Cephalopoda) are represented by an extinct subclass, Ammonoidea and two extant subclasses, Nautiloidea (Nautilus and Allonautilus) and Coleoidea (octopus, squid and cuttlefish) 24 . Among coleoids, squid are not studied as extensively as octopuses, although they have evolved just as much as octopuses and share genetic similarities with other higher vertebrates. ...

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De novo transcriptome analysis of the Indian squid Uroteuthis duvaucelii (Orbigny, 1848) from the Indian Ocean