Results of YugNIRO long-term fisheries studies on stock assessment and parameters of fish population in the near-bottom complex in the Black and Azov Seas

• Main Author: Shlyakhov, V.A.
• Other Authors: Gubanov, E.P.
• Format: Other Non-Article Part of Journal/Newspaper
• Language: Russian
• Published: 1997
• Subjects: Long-term records; Population dynamics; Fishery institutions; Stock assessment; Fishery research; Acipenser gueldenstaedtii; Mugil cephalus; Scophthalmus maximus; Dasyatis pastinaca; Squalus acanthias; Mullus barbatus; Liza aurata; Beluga; Beluga*; Turbot; spiny dogfish
• Online Access: http://hdl.handle.net/1834/15471

Long-term quantitative estimates of the population parameters and stock biomass for the most important commercial bottom-dwelling fish of the Azov and Black Seas are presented basing on YugNIRO (till 1989 AzCherNIRO) fisheries research for the last 25-30 years. Biomass estimated are presented for sturgeons (Russian sturgeon Acipenser gueldenstaedtii, starry sturgeon A. stellatus, and beluga Huso huso), flatfishes (Black Sea and Azov Sea populations of turbot Psetta maxima and flounder Platichthys flesus, Red mullet Mullus barbatus, grey mullets (golden grey mullet Liza aurata, flathead grey mullet Mugil cephalus, leaping mullet Liza saliens, and haarder Mugil soiuy), spiny dogfish Squalus acanthias, rays (thornback ray Raja clavata and common stingray Dasyatis pastinaca), Black Sea whiting Merlangius merlangus, pike-perch Stizostedion lucioperca, and round goby Neogobius melanostomus. Parameters of von Bertalanffy growth equations for several species are presented also. In accordance with current level of fisheries exploitation (taking into account the poaching and non-reported catches) the stocks of the bottom fish near the Ukrainian coast can be divided into three groups: 1) non-exploited species (spiny dogfish, rays, whiting), 2) underexploited species (pike-perch, Black Sea turbot, haarder, red mullet), 3) highly exploited species (sturgeons, Azov Sea turbot, flounder of Sivash Gulf). The fish populations in the depleted state (Azov Sea gobies, native mullets) should be considered as separate group. В данной работе изложены количественные оценки параметров популяций и величины запасов большинства важнейших промысловых рыб, обитающих преимущественно в придонных водах Азовского и Черного морей, полученные в результате рыбохозяйственных исследований ЮгНИРО (АзчерНИРО) и его отделений в последние 25-30 лет. В настоящее время по степени использования промыслом (с учетом браконьерства и неучтенного вылова) запасы рыб придонного комплекса у берегов Украины можно разделить на три группы: 1. Слабооблавливаемые ...