The src-gene family in mammals and birds consists of 9 closely related protein tyrosine kinases. We have cloned the c-yes and fyn homologues of the src-family from the teleost fish Xiphophorus helleri. Both genes show a high degree of sequence conservation and exhibit all structural motifs diagnostic for functional src-like protein tyrosine kinases. Sequence comparisons revealed three domains (...

We have isolated two major histocompatibility complex (MHC) class II B genes from the inbred fish strain Xiphophorus maculatus Jp 163 A. We mapped one of these genes, designated here as DXB, to linkage group III, linked to a malic enzyme locus, also syntenic with human and mouse MHC. Comparison of genomic and cDNA clones shows the gene consists of six exons and five introns. The encoded beta1 d...


 This study aims to determine the effect of forest bee honey on changes in male sex sword platy fish (Xiphophorus helleri). The benefits this were appropriate dose for and how survival rate larvae was. was conducted using a completely randomized design (CRD) with five treatments three replications, namely Treatment A: Control (Ordinary Feed), B: Dosage 3 ml mixed into 100 g feed, C: 4 whi...

The classic works of Noble (1939), Noble & Borne (1940) and Braddock (1945, 1949) have shown that small isosexual and heterosexual groups of Xiphophorus fish form hierarchies based upon dominance submission relations which are established by challenging and fighting. The resulting dominance orders show a tendency toward the straight line type, although incomplete hierarchies and intransitive tr...

Livebearer poeciliids, with few exceptions, are among the most popular and highly traded ornamental fish species. Therefore, they frequently introduced to natural waters outside their native range mostly by aquarium hobbyists. Here we report feral populations of two exotic poecilid species, swordtail (Xiphophorus hellerii) guppy (Poecilia reticulata), established in a hot spring Eastern Turkey....

Abstract One of the ecosystems inhabited by many types fish is a river. Kuning River one rivers in Sleman Regency, D.I. Yogyakarta, which upstream located at Mount Merapi. In 2010 there was large cold lava flood Yellow from So far, no identification species river has been carried out. The purpose study to determine (both local and introduced) state abiotic environment. method used purposive sam...

In the present work Trichodina reticulata and T. nobilis (Ciliophora: Trichodinidae) are morphologically characterised from ornamental freshwater fish culture in the State of Santa Catarina, Brazil. The prevalence of infection and a list of comparative measurements are discussed. We examined "southern platyfish" Xiphophorus maculatus (n = 35), "goldfish" Carassius auratus (n = 31), "guppy" Poec...

Ornamental fishes are among the most commonly owned companion animals in world, however, transportation process during acquisition can result being exposed to biotic and abiotic conditions which compromise welfare. While many studies have considered methods of improving welfare for food through physical social enrichment, few how improve ornamental post-transport. We investigated whether (i) in...

The aquatic environment has always been subjected to different types of pollutants of industrial, domestic and agricultural wastes (Mance, 1987; Kalay and Canli, 2000) which severely affect the aquatic organisms. Beaumont et al., (2000) and Almeida et al., (2001) reported that rapid industrialization in India has resulted into a substantial increase in the liquid waste (spent wash or effluent),...