Sex discriminatory effect of the acanthocephalan Acanthocephaloides propinquus on a gobiid fish Gobius bucchichii.

The effect of temperature and absence of sodium on the oxygen uptake, water and d-galactose transfer by the intestinal sacs of fish Gobius paganellus L.

L. HERRERA and R. JORDANA. The Effect of Temperature and Absence of Sodium on the Oxygen Uptake, Water and D-Galactose Transfer by the Intestinal Sacs of Fish Gobius paganellus L. Rev. esp. Fisiol.. 29, 83-88, 1973. Oxygen uptake and galactose and water transfer by averted sacs of intestine of the fish Gobius paganellus have been measured at 25, 30 and 37° C. The O2 uptake increased with temper...

Effect of water quality on hematological and biochemical parameters of Gobius niger caught in Faro lake (Sicily)

Effect of water quality on hematological and biochemical parameters of Gobius niger caught in Faro lake (Sicily)

Effect of human chorionic gonadotropin on sexual maturation, sex steroids and thyroid hormone levels in Caspian lamprey (Caspiomyzon wagneri Kessler, 1870).

The objective of this study was to determine the effect of human chorionic gonadotropin (hCG) on sexual maturation, plasma sex steroids (17β-estradiol, E2 and 17α-hydroxy progesterone (17α OHP)) and thyroid hormones (triiodothyronine, T3 and thyroxin, T4) levels in upstream - migrating Caspian lamprey. During the experiment, 36 fish (24 females and 12 males) in  spring 2013 and 36 fish (24 fema...

The natural history of Echinorhynchus bothniensis Zdzitowiecki and Valtonen, 1987 (Acanthocephala) in a high Arctic lake.

The acanthocephalan Echinorhynchus bothniensis Zdzitowiecki and Valtonen, 1987 differs from most other species in the genus Echinorhynchus Zoega in Müller, 1776 by infecting mysids (order Mysida) instead of amphipods (order Amphipoda) as intermediate hosts. Here we report on the occurrence of E. bothniensis in mysids (Mysis segerstralei Audzijonytė et Väinölä) and in its fish definitive hosts i...