Title Roditeljska skrb kod riba Title (english) Parental care in fishes Author Antonia Jelena Lučev Mentor Josipa Ferri (mentor)Committee member Josipa Ferri (predsjednik povjerenstva)Committee member Marin Ordulj (član povjerenstva)Committee member Svjetlana Krstulović Šifner (član povjerenstva)Granter University of Split Defense date and country 2019-09-06, Croatia Scientific / art field, BIOTECHNICAL SCIENCES Abstract Roditeljska skrb razvijena je kod samo 25% vrsta riba, ali je jako raznolika. Slatkovodne vrste riba više skrbe o potomcima (57% porodica) nego morske vrste (16% porodica). Postoji pet mogućih načina provođenja roditeljske skrbi: odsustvo skrbi nakon skrivanja (ne)oplođenih jaja, skrb mužjaka, skrb ženke, biparentalna i multiparentalna skrb. Skrb samo mužjaka (očinska) dominira s 84%. Skrb samo ženki (majčinska) je tipično povezana s unutarnjim nošenjem potomstva. Roditeljska skrb poboljšava preživljavanje i razvoj mladih. Tri glavna troška skrbi su smanjeno preživljavanje roditelja, produljeno vrijeme do idućeg mrijesta i smanjen fekunditet u budućnosti. Roditeljska skrb kod riba manifestira se u traženju sigurnog mjesta za polaganje jaja, u zaštiti već izlegnutih jaja (od hipoksije, sušenja, patogena), gradnji gnijezda, obrani i hranjenju mladih što je rijetko i kratkoročno. Neke vrste riba razvile su specijalne morfološke strukture na tijelu za čuvanje jaja. Nose ih tako na specijaliziranim koštanim kukama, na koži abdomena, ispod škrga, u ustima ili ih čuvaju u utrobi (viviparija). Čuvanje slobodno plivajućih stadija kod riba je rijetkost. Roditeljska skrb kod riba bitno se razlikuje u odnosu na skrb kod drugih kralježnjaka. Znanstvenici smatraju da je roditeljska skrb kod riba imala utjecaj na evoluciju roditeljske skrbi kod životinja generalno.
Abstract (english) Parental care is evolved in only 25% of fish species, but is highly variable. The freshwater species provide more care for offspring (57% families) than marine species (16% families). There are five possible types of parental care: absence of care after hiding (un)fertilized eggs, male, female, biparental and multiparental care. The male-only care (paternal) dominates with 84%. Female-only (maternal) care is typically associated with internal bearing. The benefit of parental care is that it improves survival and development of young. Three main costs are decreased parental survival, increased time until the next breeding attempt and reduced future fecundity. The parental care in fishes is manifested in finding a protected place for laying eggs, in protection of already hatched eggs (from hypoxia, drying, pathogens), nest building, defence and feeding which is rare and short-term. Some fish species have developed special morphological structures on the body to guard eggs. They carry them in hook, on the skin of abdomen, under the gills, in mouth or keep them in the womb (vivipary). Safeguarding free floating forms in fish is seldom. Parental care in the fish differs greatly from the care in other vertebrates. Scientists considered that parental care in fish has affected the evolution of parental care in animals generally.
Keywords
ribe
koštunjače
hrskavičnjače
roditeljska skrb
Keywords (english)
fish
teleosts
elasmobranchs
parental care
Language croatian URN:NBN urn:nbn:hr:226:350838 Study programme Title: Marine Fishery Type of resource Text File origin Born digital Access conditions Open access Terms of use Public note Ribarstvena biologija i ekologija I Created on 2020-01-02 13:27:15
