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Planktonic availability and settlement of Carcinus maenas megalopae at high tem...
Amaral, V.; Queiroga, H.; Skov, M.; Paula, J.The current conceptual model of reinvasion and settlement for estuarine brachyuran crabs in mesotidal systems is that megalopae undergo selective tidal stream transport, in an upstream direction, and settle by the end of the flood tide. Recent studies on recruitment processes of Carcinus maenas (L.) have reported a clear decoupling between supply, as larval influx, and settlement events in the lower Mira Estuar...
Tide and wind control of megalopal supply to estuarine crab populations on the ...
Queiroga, H.; Almeida, M. J.; Alpuim, T.; Flores, A. A. V.; Francisco, S.; Gonzalez-Gordillo, I.; Miranda, A. I.; Silva, I.; Paula, J.Physical processes that force transport of planktonic larvae of invertebrates are responsible for some of the spatial and temporal variability in recruitment. We investigated the influence of tide- and wind-driven circulation on intra-year variability of megalopal supply to populations of the crab Carcinus maenas in 2 estuaries on the Portuguese west coast. Daily data on physical variables and on supply and set...
Temperature-dependent development and somatic growth in two allopatric populati...
Leandro, S. M.; Queiroga, H.; Rodriguez-Grana, L.; Tiselius, P.This study compares the effect of temperature on the post-embryonic development time and weight-specific growth rate in 2 populations of Acartia clausi from different biogeographic areas (northern and southern Europe). Development was followed from nauplius I to adult at 3 temperatures (10, 15 and 18°C) at saturating food conditions. The relationship between development time and temperature was established by f...
Larval abundance patterns of Carcinus-Maenas (Decapoda, Brachyura) in Canal de ...
Queiroga, H.; Costlow, J. D.; Moreira, M. H.Larval stages of Carcinus maenas (L.) were intensively sampled in the Canal de Mira (Ria de Aveiro, Portugal) during 2 lunar months: February 12 to March 11 and May 9 to June 7, 1990. Each sampling period included fifteen 25 h fixed-station sampling cycles beginning at intervals of 4 tide cycles. Within each 25 h sampling cycle, plankton samples were collected hourly at several depths using a pump. Analysis of...
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