bay ghost shrimp species ghost shrimp lives pacific_coast north_america pale animal grows length bigger especially males enlarged thought function mating deposit lives extensive systems responsible high rates adversely affects farms numbers controlled places application carries important role ecosystem fishermen bait description life cycle reaches length centimetres body white patches pale colour pink yellow orange pink abdomen larger males master animal mass compared females minor making total body mass sexes enlarged equally likely right left male larger thought encounters mating result sexual selection eggs laid spring early summer larvae hatch summer living settle sea floor post larvae late summer fall taxonomy originally described member genus giving type locality california material studied probably collected original specimens lost transferred species genus come california oregon new genus distinguished species lack present acute tips short blunt ecology human impact mud shrimp live sandy zone western north_america found alaska baja california sur mexico habitat pacific carried reduces productivity beds considered effects knock effects entire ecosystem hazards nutrient increase primary secondary productivity increasing dissolved nitrogen branches number animals live including snapping shrimp genus crab gut flora includes wide range bacteria comprising positive bacteria group predators include dwelling fish crabs negative impact production result sprayed areas including washington reduce population addition debris reduces numbers preventing settlement larvae predation young young crabs debris fishing bait frequently transported alive states prompting fears existing population structure introduce parasitic outside native range
Neotrypaea californiensis