clupeiformes

clupeiformes

• clupeidae - herrings

• engraulidae - anchovy

• alosidae - sardines and shads

10 families

planktivorous ram-feeders

rarelt have lateral lines

physostomous swim blatters

schooling

compact, compressed to fusiform shape

historic culinary importance

high source of omega 3

mostly marine not exclusively

clupeiformes ecology from morphology

hey're both hydrodynamic from the fusiform

shape, but they're also laterally compressed, which gives

them the ability to navigate tight spaces. In this case, the

tight spaces tend not to be physical structure, but just

from being in a school with lots of other fishes

clupeidae herring

• large schools

• brodcast spawners with pelagic larvae

• important for forage fish

• form bait balls (large school)

  • individual fish is protected from predation

• r-selected strategy: 20,000 eggs and like 1 survives

richardson bay/alaska gill netters and purse seiners

harvested for roe and bait today

• japanese demand for roe declined: only few boats in sf bay now

• historically for food

• then for oil and fish meal (western fish)

• North Pacific fishery collapsed in 1993,

  but the stocks have all been rebuilt, more or

  less

f. alosidae pacific sardine sardinops sagax

fished for food, canning industry (cannery row)

• currently for aquaculture and bait

• occasionally for table

in the 1930s and 40s, that cannery, the

sardine population completely collapsed. And

the canneries were abandoned, mostly by 1950.

ed ricketts

He in many ways was the

preeminent sort of modern ecologist and developed a whole

sort of theory about community diversity and competition

that was related to his experience in the tide pools of

Northern California