a 15-landmark morphometric truss network system was used to investigate the hypothesis of population fragmentation of shad fish alosa braschnicowi borodin, 1904 along the southern caspian sea. a total of 181 a. braschnicowi specimens were caught from six localities, respectively from the west to the east including; astara, rezvanshahr, anzali, tonekabon, sari and miankale. principal component a...

Abstract Sabanejewia is a member of the family Cobitidae found in Europe and Asia. In previous studies, S. balcanica , caucasica aurata caspia were reported from Turkey. Of these Kura-Aras Basin. We examined morphological characters molecular data specimens Turkish parts river system to determine their taxonomic status. no differences between Kura Aras rivers’ populations terms morphology, but ...

Allis shad Alosa alosa hatches and develops in freshwater before migrating to the sea during its first months of life. Some field research works dedicated diet species put forward that young stages allis feed mainly on zooplankton, being opportunistic euryphagous; their would diversify through ontogeny relation growth. However, these assumptions have never been confronted availability prey, exa...

In June and July 2000, Otsego Lake was stocked with 80,000 Oneida Lake strain pond fingerling walleye (Stizostidion vitreum) averaging 48mm in total length (TL) (range= 32-56mm) with the primary goal ofre-establishing walleye to the lake. The yearly stocking ofthis number of walleye will continue to at least 2003. It is expected that walleye will forage primarily upon alewives (Alosa pseudohare...

Introduction Many diadromous fish species are currently facing the threat of generalized population extirpations across their range, and conservation efforts implemented primarily within continental domain may not be sufficient to ensure viability. In consequence, better understanding use marine environment by these turned out critical. Material method We developed distribution models for two s...

Iğdır İli Aralık ve Karakoyunlu ilçelerinde karaağaç (Ulmus minor Miller) çiçekli yabancı otların hakim olduğu habitatlarda 2021 yılı mayıs-ağustos aylarında Amata (Syntomis) caspia (Staudinger, 1877) (Lepidoptera: Erebidae)’nın ergin bireyleri atrap ile yakalanmıştır. Çalışma arazi laboratuvar şartlarında yürütülmüştür. Laboratuvara getirilen bireylerin, içerisinde yapraklarının bulunduğu desi...

− The application of fisheries acoustics in shallow waters opens new fields of observation and allows new methods for abundance estimates. In this paper we deal with echocounting of migrating fish crossing the Beaucaire-Vallabrègues lock, the first obstacle encountered on the Rhône, using a SIMRAD EY500 split-beam sounder, 70 kHz frequency. Two transducers sampled a section of water and evaluat...