Come identificare Girino (Tadpole)

Per identificare Girino (Tadpole) (Varia de acordo com a espécie de anfíbio), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

rounded

Colorazione

Typically dark brown, black, or greenish, often mottled, to blend with aquatic vegetation and substrate. Coloration can vary significantly by species and environment.

Tipo di squame

none

Posizione della bocca

inferior

Caratteristiche distintive

Lack of limbs (initially, limbs develop during metamorphosis), Presence of a long, flattened tail for swimming, External or internal gills for aquatic respiration, Small, often ventral mouth with keratinized jaw sheaths (beaks) and rows of denticles for scraping algae.

Pinna dorsale

Continuous fin fold extending from the head or body to the tail tip (not true fins like fish)

Pinna caudale

Large, vertically flattened caudal fin fold, continuous with dorsal and ventral fin folds

Pinna pettorale

Absent (limbs develop later)

Pinne distintive

Fin folds are soft and translucent, supported by cartilaginous rays, distinct from the bony rays of fish fins.

Consigli per l'identificazione

1. 1

   Body Shape

   Globular or oval body transitioning into a long, laterally compressed tail. Lacks paired fins and scales characteristic of fish.

2. 2

   Gills

   Early stages may have visible external gills; later stages have internal gills covered by an operculum-like structure, but no gill slits like fish.

3. 3

   Limbs

   Absence of limbs in early stages, with hind limbs developing first, followed by forelimbs, during metamorphosis. Fish never develop limbs.

4. 4

   Mouthparts

   Often possess a small, ventral mouth with a horny beak and rows of labial teeth (denticles) for scraping, distinct from fish mouths.

Esplora Girino (Tadpole)