Bluehead wrasses live in groups, on coral reefs of the Caribbean.
"Most
bluehead wrasses begin life as females, but can change sex sometime later to become males -- a process that takes just 10 to 21 days from start to finish," Todd said.
Most early fishery studies (1980-2002) focused on the lower 13.57-km corridor directly below Lower Atomizer Falls (hereafter, lower reach), which historically demarcated the upriver terminus of humpback chub,
bluehead sucker, and flannelmouth sucker distributions (Kaeding and Zimmerman, 1983; Douglas and Marsh, 1996; Figs.
Small schools of juveniles or juveniles plus adults of yellowhead wrasse Halicoeres garnoti,
bluehead wrasse Thalassoma bifasciatum, clown wrasse H.
In contrast, the
bluehead wrasse (Thalassoma bifasciatum) lacks structure even at the scale of the entire Caribbean basin.
Other findings include new records and range extension for rarely collected species such as the mooneye (Hiodon tergisus),
bluehead shiner (Pteronotropis hubbsi), mud darter (Etheostoma asprigene), swamp darter (Etheostoma fusiforme), and the undescribed Ouachita darter (Percina sp.).
leptocephalus (
bluehead chub) and on one occasion over pits being dug by central stonerollers (Campostoma anomalum) and striped shiners ( Luxilus chrysocephalus).
The spatial spread of the most abundant species,
bluehead chubs, over a four-month period was characterized by upstream bias, diffusion-like spread, and persistent leptokurtosis.
"If a larva develops in open ocean and disperses away from the natal population, it's at great risk of not finding suitable adult habitat." He and his colleagues studied the
bluehead wrasse (below) in the coral reefs of St.
One of the rare fishes here is the Zuni
bluehead sucker (Catostomus discobolus yarrowi).
The experiments were conducted using Thalassoma bifasciatum, the
bluehead wrasse.
Sexual selection and male characteristics in the
bluehead wrasse, Thalassoma bifasciatum: mating site acquisition, mating site defense and female choice.
Yet others, such as the common
bluehead wrasse, reverse sex and have two very different types of males.
This is particularly evident for Central Stoneroller Campostoma anomalum, which frequently visits nests of host
Bluehead Chub Nocomis leptocephalus but also spawns separately.
