Cases of morphological testis abnormality in pikeperch (Sander lucioperca (Linnaeus, 1758) from dam-lake Topolnitsa (Sredna Gora, Bulgaria)
Journal Title: ZooNotes - Year 2015, Vol 74, Issue 0
Abstract
The paper presents cases of abnormal morphology of the pikeperch (Sander lucioperca) testis. Three of the investigated 7 males caught in the dam-lake Topolnitsa showed different morphological gonadal alterations. Possible reason for the morphological abnormalities of the male gonads in the pikeperch could be the pollution of this particularе freshwater ecosystem with different industrial wastes such as heavy metals and pesticides.
Authors and Affiliations
ANGEL ZAIKOV, TANJA HUBENOVA
On the sex and age structure of the Stone Marten (Martes foina) population from Sarnena Sredna Gora Mts. (Central Bulgaria)
The sex and age structure of the Stone Marten (Martes foina Erxleben, 1777) population from Sarnena Sredna Gora Mts. (Central Bulgaria) was studied. A total of 67 skulls were divided into three age groups using different...
First record of endemic earthworm Cernosvitovia rebeli (Rosa, 1897) (Clitellata, Annelida) from western parts of Stara planina Mountains
The current study deals with earthworm biodiversity of Western Stara planina Mountains. Endemic earthworm species Cernosvitovia rebeli (Rosa, 1897) proved to be new record for the lumbricid fauna of the Western Stara p...
On the activity of two medium-sized canids: the Golden Jackal (Canis aureus) and the Red Fox (Vulpes vulpes) in the Natural Bark “Sinite Kamani” (Bulgaria) revealed by camera traps
Daylight activity in both species was often registered during the cold seasons. Foxes were registered to be active between 7-9h and 12-14h, while the jackals – during the whole day. Activity of both predators was rising...
Animal remains of the Late Antiquity settlement near Dyakovo Village (Kyustendil Region (SW Bulgaria)
From a total of 102 highly fragmented animal bone and tooth finds, dated ~250 AD – ~550 AD have been identified 13 taxa (4 wild species - Bison bonasus, Cervus elaphus, ? Cervus dama and Canis lupus) and 9 domestic forms...
Caddisfly larvae (Trichoptera, Insecta) from the Vrachanska Planina Mountains
Faunistic data on the larval stages of the insect order Trichoptera from the Vrachanska Planina Mts. are presented for the first time. A total of six locations in four rivers were sampled. Twenty-one taxa belonging to se...