Lemon sole Microstomus kitt is a commercially valuable flatfish species that occurs in shelf waters around the northeast Atlantic. Only most basic life-history information available for North Sea. Spawning generally assumed to occur between early May and October, with peak August. larvae have been found water column northern Sea winter during standard surveys. Larvae captured November/December ...

Recent discussion of genetic benefits of polyandry and female mate choice has distinguished between two potential factors influencing offspring quality: (i) some males carry higher quality genes and (ii) males and females differ in their degree of genetic compatibility. We examined evidence for effects of good genes and genetic compatibility on embryonic survival of sea lamprey (Petromyzon mari...

Pacific salmon (Oncorhynchus spp.) are famous for their homing migrations from oceanic feeding grounds to their natal river to spawn. During these migrations, salmon travel through diverse habitats (e.g. oceans, lakes, rivers), each offering distinct orientation clues and, perhaps, requiring distinct sensory capabilities for navigation. Despite these challenges, homing is generally precise and ...

Spawning salmon create patches of disturbance through redd digging which can reduce macroinvertebrate abundance and biomass in spawning habitat. We asked whether displaced invertebrates use non-spawning habitats as refugia in streams. Our study explored how the spatial and temporal distribution of macroinvertebrates changed during a pink salmon (Oncorhynchus gorbuscha) spawning run and compared...

The Azov Sea estuaries play an important role in the reproduction of semi-anadromous fish species. Spawning efficiency is closely connected with overgrowing those species spawning grounds; thus, objective water vegetation research has vital fisheries importance. Thus, main goal was to develop a machine learning algorithm for detection overgrowth Phragmites australis based on Sentinel-2 data. co...

Abstract Hydropower is considered an important form of renewable energy, often involving hydropeaking. While the effects hydropeaking on aquatic communities in areas downstream dam are well understood, there a lack studies investigating potential impacts tributaries located further upstream. In this study, we tested operations upstream restored area Danube River, with focus periods backlog and ...

Chronic overfishing has depleted numerous elasmobranch stocks in the North East Atlantic, but addressing this issue has been hampered by management complications and lacking data. Spatial management approaches have thus been advocated. This work presents a novel application and further development of an advanced spatial modeling technique to identify candidate nursery grounds and spawning areas...

The displacement pattern of the serra, Scomberomorus brasiliensis, in North-eastern Brazil was analyzed from landing data recorded form the fleet fishing serra. Serra fishery has two seasons: from Septemer to February (demersal species plus serra), and from March to August (almost only large amounts of serra). S. brasilienisis relative abundance increases similarly along the coast from March. b...

A sample of 189 short-finned eels (Anguilla australis) from four geographical areas in New Zealand were examined for the occurrence of the swimbladder nematode Anguillicola spp. Anguillicola novaezelandiae was found in three of the four localities. Overall, the prevalence was low (<12%) as was the intensity of infection (between 1 and 5 parasites per infected eel). In comparison with data from ...