Goby fish

Miyazaki, T., K. Akiyama, S. Kaneko, S. Horii, and T. Yamagishi. 1980. Identification of chlordanes and related compounds in goby-fish from Tokyo Bay. Bull. Environ. Contam. Toxicol. 24 1-8. 

Figure 7.43. Effects of glycerol concentration and temperature on activities of A4-LDH from an Antarctic notothenioid (Parachaenichthys charcoti) and a warm-temperate goby fish (Gillichthys mirabilis). Inset the effects of glycerol concentration on the two orthologs at physiological temperatures of the species, 0°C for P. charcoti and 20°C for G. mirabilis. (Modified after Fields et al., 2001.)...

The discovery of TTX in newts and goby fish tempted scientists to search for new TTX-bearing animals. In 1975, TTX unexpectedly detected from the skin of Costa Rican frogs (average weight 1.3-1.8 g) Atelopus varius varius. 

Lizard goby, Rhinogobius flumineus, Nagarawa River, Japan, whole fish, total chlordanes ... 

Even a neutral chemical cue can trigger alarm responses in fish if they had experienced it together with a true alarm signal. A coral-reef dwelling goby, Asterropteryx semipunctatus, learned to associate a novel chemical cue from a... 

Tetrodotoxin (abbreviated TTX below. Figure 1) is named after the family Tetraodontidae into which most pufferfishes are classified. TTX has not been detected in any other fishes except for the goby Gobius criniger. 

Sources flora inhabiting puffer fish (roe, liver, skin), some newts, octopi and frogs, gobys, the California salamander... 

Calculations show that total lipid production is 20-25% less in infested populations of anchovy and goby than in those clear of the parasites. What is more, infestation weakens fish, rendering them scarcely able to migrate, survive the winter or spawn. This thesis is not indisputable, however. Like predators, parasites regulate the numbers of their victims, rather than wiping them out, by withdrawing the most weakened or unviable hosts from the process of competition for food. 

Proteolytic digestive enzyme activity in sluggish Black Sea fish (e.g. toad goby, scorpion fish) has been found to be equal to and sometimes greater than that of the active fish (e.g. horse-mackerel, annular bream, pickerel). The aminolytic activity of fish of low mobility is also greater (Ugolev and Kuzmina, 1993). It will further be shown in Chapter 5 that the consumption and assimilation of food occur more efficiently in sluggish than in active fish. 

The relationship between the quantity of serum albumin and activity is, however, not clear. Although it forms up to 50% of the serum proteins in tunas, 40% in horse-mackerel, 14% in scorpion fish and 5% in gobies (Shulman and Kulikova, 1966), such a relationship is not distinct in other orders of fish. In the blood it performs transport functions and is an anticoagulating agent. 

The activity of alkaline phosphatase in fish scales is relevant to the study of the biochemical characteristics of production (Senkevich, 1967 red mullet, round goby). This enzyme promotes calcification of bones and scales, and its activity correlates well with the linear growth of the fish (Figure 55), so it is most intense during the warm season. Data from cold-water fish are not available. 

---