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Showing 1 to 10 of 10 for “"Megalopae"”.
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Recruitment of Blue Crab, <i>Callinectes sapidus,</i> Postlarvae to the Back-Barrier Lagoons of Virginia's Eastern Shore
… or habitat requirements of blue crab postlarvae (megalopae) in shallow well-mixed lagoonal systems that make up a considerable part of the species' range. In Virginia's coastal lagoons, planktonic blue crab megalopae are most abundant at night on flooding tides, and are not abundant during the …
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Taxonomy, Diversity, and Distribution Patterns of Portunid Crab Megalopae in the Northern Gulf of Mexico During Fall of 2003
… of Portunidae (Crustacea: Decapoda) megalopae collected during the fall of 2003 from a NOAA SEAMAP cruise revealed 7 species and 11 morphs with 90% of the total density comprised of <em>Callinectes sapidus, Achelous gibbesii, Callinectes similis, Achelous spinicarpus, </em>and …
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Estuarine Ingress of the Blue Crab Callinectes Sapidus
… were examined by: 1) exposing postlarvae (megalopae) collected in coastal and estuarine areas to a range of salinities and 2) determining the cue that stimulates acclimation of coastal megalopae to low salinities, the time to acclimation, and the decrease in salinity necessary for …
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A Comparison of Recruitment Strategies Among Brachyuran Crustacean Megalopae of the York River, Lower Chesapeake Bay and Adjacent Shelf Waters
… to salinity and water column stratification. The megalopae are assigned to three apparent recruitment strategies: retained estuarine, expelled estuarine and retained coastal megalopae. the megalopa stages of estuarine adults, such as <em>Hexapanopeus angustifrons</em>, <em>Neopanope sayi, Panopeus …
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Invertebrate plankton assemblages in the surf zones of St. Lucia and Mhlathuze Estuaries, KwaZulu-Natal, South Africa
… the mysids Gastrosaccus spp. and brachyurans (megalopae) dominating the taxa at St Lucia and the Mhlathuze estuaries respectively. Collectively copepods dominated the boioplanktonic forms. Other commonly abundant hotoplankton included siphonophores, chaetognaths, dadocerans and medusae. The …
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ΣΥΜΒΟΛΗ ΣΤΗ ΜΕΛΕΤΗ ΤΗΣ ΟΙΚΟΛΟΓΙΑΣ ΚΑΙ ΒΙΟΛΟΓΙΑΣ ΤΗΣ CALLIANASSA TYRRHENA (PETAGNA, 1792) (CRUSTACEA, DECOPODA, THALASSINIDEA)
… FORMED BY SURVIVAL DIFFERENCIES OF SETTLING MEGALOPAE THAT ARE DUE TO SEDIMENT CHARACTERISTICS. THE RANDOM SPATIAL DISTRIBUTION OF ADULTS WITHIN THE PATCH CAN BE EXPLAINED BY THE ABSENCE OF SEVERE ECOLOGICAL FORCES: POPULATION DENSITY DOES NOT SEEM TO BE AFFECTED BY BIOTIC FACTORS SUCH AS …
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Ecotoxicology of Natural and Anthropogenic Extreme Environments
… ≈ aldicarb > acephate ≈ Roundup® (glyphosate). Megalopae were almost always more sensitive to pesticides than early stage juveniles. Commercial formations of pesticides generally showed similar toxicity to active ingredients alone. Exposure to LC<sub>20</sub> levels of acephate, aldicarb, …
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Larval ecology and synchronous reproduction of two crustacean species : Semibalanus balanoides in New England, USA and Gecarcinus quadratus in Veraguas, Panama
… megalopa stage in 21 days. A mass migration of megalopae and juveniles out of the water was observed 30 days after adult females released their eggs. Plankton pump samples taken near the island suggest that zoea abundance and distribution may be related to the phase of the internal tide. …
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Larval ecology and synchronous reproduction of two crustacean species : Semibalanus balanoides in New England, USA and Gecarcinus quadratus in Veraguas, Panama
… megalopa stage in 21 days. A mass migration of megalopae and juveniles out of the water was observed 30 days after adult females released their eggs. Plankton pump samples taken near the island suggest that zoea abundance and distribution may be related to the phase of the internal tide. …