The blue swimmer crab (BSC, Portunus armatus) is an economically and culturally important species distributed throughout the coastal waters of Indo-Pacific region. Reproduction BSC poorly understood in south-eastern Australia, a region that experiencing substantial tropicalisation from global warming. We examined gonadal development, egg–mass relationships, influence temperature on development ...

The present study investigated the reproductive biology of Stolephorus commersonnii and Amblygaster sirm at two landing sites in Tanga on northern coast Tanzania. Fish samples were collected a monthly basis from ringnets operated by artisanal fishers nearby coastal waters. Spawning seasons determined using gonadosomatic index (GSI) gonadal maturity stages. size first was 57.7 mm 66.2 total leng...

Alternative reproductive tactics are characterized by the occurrence of discrete alternative morphs that differ in behavioural, morphological and physiological traits within the same sex. Although much effort has been made to describe the behaviour, morphology and physiology of such alternative morphs, less effort has been invested investigating how much overlap there is in the characteristics ...

background: phenol is an estrogenic and toxic compound and people are widely exposed to it, in different ways.  objectives: the aim of this study was to determine  the  negative effects of phenol on the fertility of male mice, by investigating sperm parameters including viability, motility, fertility rates and daily sperm production (dsp). methods: a total of 106 adult nih mice were divided int...

Abstract The study deals with the growth pattern, mortality, and reproduction of common sole, Solea solea (Linneaus, 1758), from Sea Marmara (Turkey). A total 580 fish specimens were sampled monthly October 2017 to September 2018. length all individuals ranged 11.1 29.5 cm, corresponding ages 1 3 years. length–weight relationship was expressed as W = 0.022 TL 2.6838 , where slope indicated nega...

fecundity is one of the important indicators of reproduction biology in fishes especially in rearing and restocking management of endangered species such as sturgeon. the fecundity of stellate sturgeon (acipenser stellatus pallas, 1771) was studied in 50 specimens captured by gill net (mesh size= 100 mm) and seine net in different fishing areas along the southeastern part of the caspian sea fro...

  The population parameters and spawning season of the Spangeld emperor (Lethrinus nebulosus) were studied in coastal waters of Hormouzgan province. The monthly calculated mean values of gonadosomatic index (GSI) of females were indicate to increase from February, reach the highest in March and decline in June. The spawning season peak of L. nebulosus occurred in March. The Von Bertalanffy grow...

Background: Phenol is an estrogenic and toxic compound and people are widely exposed to it, in different ways.  OBJECTIVES: The aim of this study was to determine  the  negative effects of phenol on the fertility of male mice, by investigating sperm parameters including viability, motility, fertility rates and daily sperm production (DSP). METHODS: A total of 106 adult NIH mice were divided int...

Histological changes and maturity stages during the reproductive cycle of the ovaries of Klunzinger's Mullet (Liza klunzingeri) were investigated. The evaluation of the spawning season was carried out based on monthly samples from 3 stations in the Persian Gulf and the Oman Sea. Sex ratio was approximately 1:3 (M: F). The maturity stages of female L. Kluningeri are: Virgin, Developing Virgin, D...