Results 111 to 120 of about 49,538 (165)

Immunity in fish larvae.

Developments in biological standardization, 1997
The route of immunization, dose and nature of antigens are relevant for induction of specific immune responses but they are particularly influenced by the state of immunomaturation of fish. It is difficult, however, to determine when the fish immune system has matured and, accordingly, when the fry can be successfully vaccinated.
A G, Zapata, M, Torroba, A, Varas, A V, Jiménez   +3 more
openaire   +1 more source

Chordata: Fish eggs and larvae

2017
This chapter describes the taxonomy of fish eggs and larvae. Most fish eggs and larvae are planktonic, and are commonly found in plankton net tows. Collectively these fish stages are referred to as ichthyoplankton. The chapter covers their life cycle, ecology, and general morphology.
Peter Munk, Jørgen G. Nielsen
openaire   +1 more source

Are Larvae of Demersal Fishes Plankton or Nekton?

2006
A pelagic larval stage is found in nearly all demersal marine teleost fishes, and it is during this pelagic stage that the geographic scale of dispersal is determined. Marine biologists have long made a simplifying assumption that behaviour of larvae--with the possible exception of vertical distribution--has negligible influence on larval dispersal ...
openaire   +2 more sources

The physiology of digestion in fish larvae

Environmental Biology of Fishes, 1986
The acquisition, digestion, and assimilation of food is critical for the growth and survival of fish larvae; a fish larva either grows or it perishes. Fish larvae are characterized by digestive systems and diets that differ from adults. Larvae undergo a pattern of trophic ontogeny, changing diet with increasing size, and these changes result in ...
John J. Govoni, George W. Boehlert, Yoshirou Watanabe   +2 more
openaire   +1 more source

Wound healing in fish larvae

Journal of Experimental Marine Biology and Ecology, 1982
Abstract Healing of skin lesions has been investigated in herring, Clupea harengus L., plaice, Pleuronectes platessa L., and salmon, Salmo salar L., larvae. Healing was observed in vivo and by histology, the main response being a mass migration of epidermal cells from the periphery of the lesion. Wound areas of 0.1–7 mm 2 closed in 4–12 h, the
openaire   +1 more source

Extraretinal Photosensitivity in Fish Larvae

1975
The presentation of a paper on extraretinal photoreception may at first appear incongruous in an Advanced Study Institute on vision in fish. Extraretinal photoreceptors are, however, far more important to the life of fishes than the relatively small bulk of published research on this subject may reflect.
openaire   +1 more source

Priorities during early growth of fish larvae

Aquaculture, 1997
Abstract The small and numerous eggs of most teleost fishes develop into small larvae with little yolk, which is depleted soon after hatching. They are the smallest self-supporting vertebrates. When these larvae complete their morpho-functional systems necessary to escape from predators and to obtain external food with priority, their further chances
Osse, J.W.M., van den Boogaart, J.G.M., van Snik, G.M.J., van der Sluys, L.   +3 more
openaire   +2 more sources

Nutrition of Marine Fish Larvae

Journal of Applied Aquaculture, 2003
ABSTRACT In the hatchery production of aquatic animals for aquaculture, livefoods such as diatoms; rotifer, Brachionus plicatilis and brine shrimp, Artemia salina, have been used throughout the world. However, such production requires large facilities, maintenance expenses, and labor to produce a desired amount of live foods constantly and reliably ...
openaire   +1 more source

On fish eggs and larvae in the Skagerrak

Sarsia, 1968
Abstract The distribution of fish eggs and larvae shows the importance of the current system in the Skagerrak. The Jutland, Baltic, and Norwegian (coastal) currents form together an anti-clockwise circulation which results in the ichthyoplankton drifting in a characteristic way.
openaire   +1 more source

Biosynthesis in vivo and excretion of cortisol by fish larvae

The Journal of Experimental Zoology, 1997
There is a posthatching rise in levels of endogenous cortisol during the ontogeny of those teleosts studied to date. This is thought to be the result of de novo synthesis of cortisol by the larvae, although there is no direct evidence for this. The present study aimed to demonstrate this process in Asian seabass (Lates calcarifer).
Sampath-Kumar, R., Lee, S.T.L., Tan, C.H., Munro, A.D., Lam, T.J.   +4 more
openaire   +2 more sources