1 research outputs found
Morfometrija tijela i analiza oblika otolita inÄuna (Engraulis encrasicolus (Linnaeus, 1758)) u alžirskom bazenu
Body morphometric characteristics and otolith shape described by elliptic Fourier descriptors
analyses were carried out on European anchovy (Engraulis encrasicolus) samples collected from six locations in Algerian waters during the acoustic survey ALPEL2018 (south-western Mediterranean Sea, GFCM-GSA04). The discriminant analysis was applied over twelve morphometric body distances and 31 normalized elliptic Fourier descriptors. It highlighted significant difference between areas but with high overlapping. No significant difference was detected between males and females, or right and left otoliths. Hierarchical clustering analysis conducted on the mean form of body and otolith shape showed a clear geographical cline. The results indicate that the geographical trend is present with a high level of overlapping between the near areas, suggesting that European anchovies in Algerian waters are not completely isolated.Morfometrijske karakteristike tijela i oblik otolita opisane eliptiÄkim Fourierovim deskriptorima
analize su provedene na uzorcima europskog inÄuna (Engraulis encrasicolus) prikupljenim sa Å”est lokacija u alžirskim vodama tijekom akustiÄkog istraživanja ALPEL2018 (jugozapadno Sredozemno more, GFCM-GSA04). Diskriminantna analiza primijenjena je na dvanaest morfometrijskih udaljenosti tijela i 31 normalizirani eliptiÄki Fourier deskriptor. NaglaÅ”ena je znaÄajna razlika izmeÄu podruÄja, ali s velikim preklapanjem. Nije otkrivena znaÄajna razlika izmeÄu mužjaka i ženki, odnosno desnog i lijevog otolita. Provedena hijerarhijska klasterska analiza srednjeg oblika tijela i oblika otolita pokazala je jasnu geografsku klinu. Rezultati pokazuju da je geografski trend prisutan s visokom razinom preklapanja izmeÄu obližnjih podruÄja, Å”to navodi da europski inÄuni u alžirskim vodama nisu potpuno izolirani