Taxonomic Remarks
Vera & Pequeño
(2001) compared the insular populations of Sicyases with
those of continental Chile and supported the differentiation
between insular and continental species. Vera & Pequeño
(2001) followed De Buen (1960) in considering the
insular species as S. hildebrandi rather than the earlier S.
brevirostris. Sicyases brevirostris is considered by us as
senior synonym of S. hildebrandi following Briggs’ (1955)
conclusion based on examination of type material, rather
than following De Buen’s doubt that Guichenot (1848)
ever had specimens from the islands and his ascription
of S. brevirostris as junior synonym of S. sanguineus.
Briggs (1955) distinguished Sicyases brevirostris from S.
sanguineus by a smaller head (>30% vs. <30% SL) and
more anal fin rays (9 vs. 7-8). Vera & Pequeño’s (2001)
study included an additional feature to distinguish both
species: S. brevirostris with smooth skin and S. sanguineus
with rugose skin except in the smallest specimens. Further
research is needed, possibly at the molecular level, in
order to determine whether these island populations are
indeed distinct from their continental counterparts and if
there has been any dispersal.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino demersale. Subtropical; 33°S - 35°S, 83°W - 76°W
Southeast Pacific: Endemic to Juan Fernández Is.
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Facultative air-breathing in the genus (Ref. 126274); Species distinct from continental ones, and not syntopic with Gobiesox marmoratus Jenyns, 1842 (Ref. 89357).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Dyer, B.S. and M.W. Westneat, 2010. Taxonomy and biogeography of the coastal fishes of Juan Fernández Archipelago and Desventuradas Islands, Chile. Rev. Biol. Mar. Oceanogr. 45(S1):589-617. (Ref. 89357)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00249 - 0.01527), b=3.15 (2.93 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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