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Analiza razširjenosti morfološko kriptičnih vrst rodu Niphargus
Šet, Janko (Author), Fišer, Cene (Mentor) More about this mentor... This link opens in a new window

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Abstract
V tej nalogi smo raziskovali razširjenost kriptičnih vrst kompleksa nominalne vrste Niphargus stygius. V raziskavi smo izolirali DNA in pomnožili podenoto I mitohondrijskega gena za citokrom oksidazo (COI) 62 od 94 v raziskavo vključenih osebkov iz 38 lokalitet. S tem smo opisali šest novih nahajališč vrste N. chagankae, eno N. cvajcki, osem N. gottscheeanensis, dve N. kenki, eno N. malagorae in dve N. zagrebensis. Vrstama N. gottscheeanensis in N. kenki smo s tem pomembno povečali znano razširjenost. Opisali smo prvo sopojavljanje N. chagankae in N. likanus in novo lokacijo sopojavljanja vrst N. gottscheeanensis in N. podpecanus. V programu MaxEnt smo iz klimatskih podatkov izračunali potencialne razširjenosti vrst. V prvi model smo vključili povprečno letno temperaturo in letno količino padavin, v drugi pa minimalno mesečno, maksimalno mesečno in povprečno letno temperaturo in minimalno mesečno, maksimalno mesečno in celokupno letno količino padavin. Zaradi premajhnega števila podatkov smo lahko izračunali modele razširjenosti le za vrste N. chagankae, N. gottscheeanensis in N. stygius, torej vrste, za katere smo imeli podatke za vsaj osem lokacij. Kompleksnejši modeli so se izkazali za natančnejše, vendar močno odstopajo od realnih podatkov. Ocenjujemo, da klimatski parametri le v manjši meri pojasnjujejo razširjenost vrst tega kompleksa.

Language:Slovenian
Keywords:morfološko kriptične vrste, kompleks Niphargus stygius, molekularna taksonomija, okoljsko modeliranje razširjenosti
Work type:Master's thesis/paper (mb22)
Organization:BF - Biotechnical Faculty
Year:2019
COBISS.SI-ID:5165135 Link is opened in a new window
Views:430
Downloads:182
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Secondary language

Language:English
Title:Analysis of distribution of morfologicly criptic Niphargus species
Abstract:
In this thesis we studied distribution of species from a morfologicaly criptic complex Niphargus stygius. We studied 94 individuals from 38 localities and successfully isolated DNA and amplified subunit I of mitochondrial gene for cytochrome oxidase (COI) in 62 individuals. The sequencing unveiled six, one, eight, two, one and two new localities for N. chagankae, N. cvajcki, N. gottscheeanensis, N. kenki, N. malagorae and N. zagrebensis, respectively. The new records substantially expanded the known distributions of N. gottscheeanensis and N. kenki. We recorded the first case of the coexistence of N. chagankae and N. likanus, and another case of coexisting N. gottscheeanensis and N. podpecanus. Additionally, we estimated potential species' distributions using climate data in the programme MaxEnt. We ran two models of different complexity, based on mean annual temperature and overall annual precipitation, and, alternatively, based on mean annual temperature, annual minimal and maximal monthly temperature, maximal, minimal and overall annual precipitation. The models successfully applied only in species with eight or more records (N. chagankae, N. gottscheeanensis, N. stygius) and more complex model outperformed the simpler one. However, the models do not correspond to to real distributional data, suggesting that our models likely missed key determinats of species' distribution.

Keywords:morfologicly criptic species, Niphargus stygius complex, molecular taxonomy, distribution modelling

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