Numerous studies have highlighted the diversity of fish inner ear morphology. However, the function of the shape, size and orientation of the different structures remains poorly understood. The saccule (otolithic endorgan) is considered to be the principal hearing organ in fishes and it has been hypothesized that sagitta (saccular otolith) shape and size affect hearing capacities: large sagitta...

In this paper age determination and morphological characteristics of blacktip catfish, Plicofollis dussumieri, from Oman Sea were evaluated. A total of 132 fish specimens were collected from fishing trawlers or landings from March 2011 to July 2012, with minimum and maximum of 245 mm, 195 g and 767 mm, 5801 g, respectively. Maximum life span was 12 years for the length range of 245 – 767 mm FL,...

Otoliths are biominerals that grow in the endolymphatic fluid of the balance organs of vertebrates, and are composed of calcium carbonates with low amounts of organic matter [1]. In fish they are composed mainly of aragonite, and participate also in the transduction mechanism of hearing [2]. The microstructure of otoliths give information about their own process of growth, as it is possible to ...

Abstract The otoliths of teleosts are part the inner ear. They related to balance system and also mechanical components sound transmission, responsible for hearing in fish. Their morphology is determined by function they perform influenced environmental factors. In this context, our goal was to: analyse possible morphological changes sagitta Micropogonias furnieri (Desmarest, 1823) during its o...

In this paper age determination and morphological characteristics of blacktip catfish, Plicofollis dussumieri, from Oman Sea were evaluated. A total of 132 fish specimens were collected from fishing trawlers or landings from March 2011 to July 2012, with minimum and maximum of 245 mm, 195 g and 767 mm, 5801 g, respectively. Maximum life span was 12 years for the length range of 245 – 767 mm FL,...

The shape of sagitta otoliths was used to compare individuals little tunny (Euthynnus alleteratus) harvested on board commercial fishing vessels from the coastal areas along Eastern Atlantic, including Mediterranean Sea. Fish sampling and selection designed cover possible seasonal changes tuna size. research encompassed both morphometric analyses left sagittal extracted 504 fish specimens. Four...

Invasive species are among the most important problems for biodiversity conservation worldwide, particularly in megadiverse countries such as Brazil. However, there is no biological information to develop policies managing invasive populations many cases. The life history parameters and otolith variations essential understanding adaptations of introduced marine environments. This study aimed id...

Abstract The challenges fish face in intraspecific communication has resulted adaptation different parts of their sensory system, including the auditory system. Evidence suggests that capability is specific for each species. otolith a part system teleost fish, and plays an important role maintaining balance hearing. According to previous research, morphological variation otoliths result synergy...

The sagitta otoliths of teleostean fishes are usually used in diverse studies. Their shapes species-specific, and the qualitative description their morphological features seems to be a simple task, despite its subjectivity. On other hand, morphometric techniques have been developed with focus on objectivity, reproducibility, accuracy. Considering this, morphology was reviewed evaluated terms ro...