Biological aspects of spotted seerfish Scomberomorus guttatus (Bloch & Schneider, 1801) (Scombridae) from north-eastern Arabian Sea

Short communication:First report of cyclopoid copepods (oithonidae) from north-eastern Arabian Sea, Karachi, Pakistan

Short communication:First report of cyclopoid copepods (oithonidae) from north-eastern Arabian Sea, Karachi, Pakistan

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first record of the numbray, narke dipterygia (bloch & schneider, 1801) from iran (elasmobranchii: narkidae)

as a result of our survey in february 2011, a single female specimen of n. dipterygia was found in the tidal zone of chabahar bay and it was caught with a small deep net. the fish was transferred in a bucket to the fisheries laboratory of chabahar maritime university and kept in a salt water aquarium for further examinations. we witnessed the birth of 6 juveniles after 3 days. the female and he...

Preliminary Investigation of the Ocular Macroscopic Structure of a Bowmouth Guitarfish (Rhina ancylostoma Bloch & Schneider 1801)

Bowmouth guitarfish is one of the rare and endangered aquatic species [1] in class Chondrichthyes, subclass Elasmobranchii, which includes sharks and rays (Batoidea), order Rajiformes, and the only species in the family Rhinidae and genus Rhina [2]. Its habitats include the Indian and the Pacific oceans and have been reported from Australia to the south of the Arabian Peninsula. An adult guitar...

Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin

The objective of this study was to cytogenetically analyze Phractocephalus hemioliopterus comparing the findings with other data to infer relationships among Pimelodidae species. The results revealed a diploid number of 2n = 56 and the karyotype composed of 16 metacentric, 20 submetacentric, 6 subtelocentric and 14 acrocentric chromosomes (FN = 98). The Ag-NORs, 18S rDNA and CMA3 signals were c...