Issue
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.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marinhas demersal. Subtropical; 33°S - 35°S, 83°W - 76°W
Southeast Pacific: Endemic to Juan Fernández Is.
Tamanho / Peso / Idade
Maturity: 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 de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
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)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2024-2)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00250 - 0.01521), b=3.15 (2.94 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
