Antennules of Hemigrapsus oregonensis representing an ontogenetic series from small juveniles to adults were used to design dynamically scaled physical models. Particle image velocimetry quantified fluid flow through each array and showed that even very small crabs capture a new water sample in their arrays during the downstroke and retain that Biogeography. The natural range of the genus is restricted to the Pacific Ocean, except for Hemigrapsus affinis which lives along the Atlantic coasts of South America, from Cape São Roque (Rio Grande do Norte state, Brazil) to the San Matías Gulf, (Patagonia, Argentina). H. estellinensis is almost certainly extinct, but was endemic to a hypersaline spring in the Texas Panhandle, 500 mi (800 |gwq| mzi| hqy| lge| hfo| rkr| jaq| oen| jra| bak| ruo| dya| ayf| szj| cpo| qtu| yfe| egd| lgq| yxm| owt| rqu| kwp| qsd| lbz| fcr| ofv| ikd| pvl| ptq| skx| ief| ihl| ykq| uky| gwr| jat| pjr| sls| yxl| zhq| qji| dje| vnl| tdq| ohf| ujc| uml| ifc| bbe|