Marine fish species such as grey wrasse Symphodus cinereus, common sole Solea solea, knout goby Mesogobius batrachocephalus and rusty blenny Parablennius sanguinolentus were studied for their parasitic isopods on the Sinop coast of Black Sea. Two cymothoid (Nerocila bivittata Nerocila orbignyi) identified. was found body surface fins wrasse, sole, goby, N. orbignyi dorsal fin blenny. The preval...

Catches of near-shore or coastal fish continue to be a major source of animal protein for the nations of the South Pacific region. Nominal landings of near-shore fishes amount to about 90,000 t/yr, about half of which is reef fish. Ciguatoxic fishes are found throughout much of the region but in some locations, such as the island of Niutao in Tuvalu, there is a comparatively high risk of intoxi...

A VERY EXTENSIVE LITERATURE exists concerning the normal bacterial flora of marine fish species common to the northern ocean areas, i.e., the North Sea (Stewart, 1932; Aschehoug and Vesterhus, 1943; Reay and Shewan, 1949; Liston, 1956, 1957; Georgala, 1958), the North Atlantic (Reed and Spence, 1929; Gibbons, 1934a, 1934b; Dyer, 1947), and the North Pacific (Hunter, 1920; Fellers, 1926; Snow an...

Salinity gradients are critical habitat determinants for freshwater organisms. Silverside fishes in the genus Odontesthes have recently and repeatedly transitioned from marine to freshwater habitats, overcoming a strong ecological barrier. Genomic and transcriptomic changes involved in this kind of transition are only known for a few model species. We present new data and analyses of gene expre...

Many mobile animals rely on the integration of locomotion and feeding to capture prey. Fishes commonly swim up to a prey item and utilize a combination of ram and suction feeding for prey capture. Marine cottids represent a diverse and abundant lineage of fishes that exhibit variation in feeding mode that is related to their mouth morphology. However, little is known regarding the integration o...

Little is known concerning the trematode parasites of Tasmanian fishes. A single species CoitocaecU11'l anas}Jiclis Hickman has been described from pl'ogenetic metacercariae in the Mountain Shrimp, A.nas}Jides tawmaniae Thompson. Members of the genus Coitocaec/Ii/n usually complete their life cycle in a fish. The present paper discusses the status of species belonging to the genus, and describe...

Partial a-amylase gene sequences were determined and a-amylase gene expression was quantified in four species of carnivorous, omnivorous, and herbivorous prickleback fishes (family Stichaeidae) to assess the effects of ontogeny, diet, and species on expression of this gene. Pairwise comparison of a-amylase nucleotide sequences revealed 96–98 % identity, and comparison of amino acid portions rev...

Bycatch studies have largely ignored population level effects on fish species of little commercial interest. Here we analyze bycatch of the lined seahorse (Hippocampus erectus) in the bait-shrimp trawl fishery in Hernando Beach, Florida, providing the first fisheries data for this species. Based on catch per unit of effort (CPUE), size, sex, and reproductive status of trawled H. erectus, 1) app...

Animals often change their habitat throughout ontogeny; yet, the triggers for habitat transitions and how these correlate with developmental changes - e.g. physiological, morphological and behavioural - remain largely unknown. Here, we investigated how ontogenetic changes in body coloration and of the visual system relate to habitat transitions in a coral reef fish. Adult dusky dottybacks, Pseu...

Intra and interspecific comparisons of arginine vasotocin (AVT) and its mammalian homolog arginine vasopressin (AVP) demonstrate several relationships between these neuropeptides and aggression/dominance behaviors. Prior studies in coral reef butterflyfishes and other fishes indicate that features of AVT neurons in the gigantocellular preoptic area (gPOA) and axon varicosities within the ventra...