6 m wide) in PS and wood/concrete breakwaters in RG, and small mytilid
Davies (1980) showed that there have been many misidentifications between the three mytilid
Figure 1 presents three hypothetical trees that illustrate distinct patterns of evolutionary relationships among the M and F mitotypes for the six examined species of mytilid
and unionid bivalves.
trunculus preying on various mytilid
and venerid bivalves.
Among the collected meroplankton, the numerically dominant groups included mytilid
californianus, it remains to be seen if this explanation can be extended to other mytilid
Larval and post-larval shell morphology of two Mytilid
species Musculista senhousia (Benson) and Limnoperna fortunei kikuchii Habe.
The dominant non-colonial macro boring families at the study reefs are mytilid
bivalves, eunicid polychaetes and aspidosiphonid sipunculans, with the bivalves considered the main internal bioeroders due to their greater body size and abundances.
mussel taxa were collected from the Northeast (Bays 12-36) and West (Bays 94-125) coasts, including Alaska.
OA has been shown to weaken the byssus of mytilid
mussels, which could increase susceptibility to predation.
Two groups of bivalves are known to live embedded within the ascidians tunic: the verticordiid Mytilimeria nuttallii Conrad, 1837 which is found in colonial ascidians in the eastern Pacific, along the coast of North America (Lambert, 2005), and the mytilid
genus Modiolarca Gray, 1843 (= Musculus; Morton & Dinesen, 2011).
Differing from fresh water bivalves native to the region, this mytilid
has external fertility and a planktonic larval development similar to marine mytilids
(Monteiros-Ribas et al.
Sentinel bivalves included mytilid
mussels, dreissenid mussels, and oysters.
canaliculus, and previous findings with other mytilid
mussels (Bayne, 1973); (2) the metabolic rate during byssus attachment would be higher than during feeding; and (3) behavior, namely the amount of time the mussels spent open or closed, would vary, with proportionately more time spent open during byssus attachment and feeding than during prolonged starvation.
Observations on two mytilid
species from a Nova Scotian mussel farm.