Gobiosoma hemigymnum, Half naked goby

Gobiosoma hemigymnum (Eigenmann & Eigenmann, 1888)

Half naked goby
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Gobiosoma hemigymnum   AquaMaps   Data sources: GBIF OBIS
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Gobiosoma hemigymnum
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> Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Gobiosoma: Latin, gobius = gudgeon + Greek,soma = body (Ref. 45335).
More on authors: Eigenmann & Eigenmann.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

marien; brak water demersaal; diepte 3 - 13 m (Ref. 104557). Tropical; 23°S - 38°S (Ref. 104557)

Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

Southwest Atlantic: from Rio de Janeiro, Brazil to Mar del Plata, Argentina.

Grootte / Gewicht / Leeftijd

Maturiteit: Lm ?  range ? - ? cm
Max length : 4.4 cm TL mannelijk / geslacht onbekend; (Ref. 104557)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 8; Dorsale zachte stralen (totaal) : 10 - 11; Anale stekels: 1; Anale zachte stralen: 8 - 9. This species is distinguished from its congeners by the following set of characters: body scaled from caudal peduncle to the base of pectoral fin, the scales wedge-shaped to under posterior of first dorsal-fin base, wedge ending abruptly, then continuing forward in a narrow, straight row of 1-2 scales high along midline; the naked area extending from mid- pectoral-fin base to (or past) posterior of second dorsal-fin base and from mid-pectoral-fin base to (or past) posterior end anal fin ray base; upper jaw 34.6 % in head length (HL); lateral scales modally 31; pectoral fin 19 (17-21) (Ref. 104557).
Body shape (shape guide): elongated; Cross section: oval.

Biologie     Verklarende woordenlijst (bv. epibenthic)

The species occirs in estuarine, intertidal and shallow coastal areas and frequently found associated with epilithic organisms (2 centimeters or more in size) found at depths ranging from tidepools to 13 meters. Some specimens from Lagoa da Conceição (state of Santa Catarina) were collected while snorkeling along the granitic shores in 1.5 to 2 meters of water in an area where the non-native tunicate Styela plicata (Lesueur 1823) are found and this solitary ascidian forms extensive aggregations in bands about 1 meter below the lower limit of the intertidal zone. Other species collected in the area included: gobiid Bathygobius soporator (Valenciennes 1837), the native blenny Hypleurochilus fissicornis (Quoy & Gaimard 1824), the invasive blenny Omobranchus punctatus (Valenciennes 1836), and the gobiesocid Gobiesox barbatulus Starks 1913. In Mar Chiquita lagoon (Buenos Aires Province, Argentina) this species has been recorded in high numbers associated with the reefs built by the invasive tubeworm Ficopomatus enigmaticus (Fauvel 1923; also known as Mercierella enigmatica) (Cervigón & Bastida, 1971). Nearby in Mar del Plata, this species inhabits the encrusting community in both the harbor and the mesolittoral zone of Cabo Corrientes; where in the latter community, composed of the mussels Brachidontes rodriguezii (d'Orbigny 1842) and Mytilus edulis platensis d'Orbigny 1842, this species is rare. In Uruguay, it was observed in tidepools 20 and 50 cm deep with clear water and sandy bottoms (A. Carvalho-Filho, pers. comm., 17 May 2013); other fish species in the pools included: H. fissicornis, juveniles of Mugil curema Valenciennes 1836 and adults of Jenynsia multidentata (Jenyns 1842). In São Paulo, both this species and Barbulifer enigmaticuswere collected within the same tidepools (J.L. Figueiredo, pers. comm., 20 September 2010). In northern Argentina and southern Brazil, this species has been collected at 8-13 meters. Also this species uses the empty shells of the cultured mussel Perna perna (Linnaeus 1758) for spawning and is an intermediary host of Bucephalus margaritae (Ozaki & Ishibashi 1934), a trematode worm parasitic on the mussel, in Santa Catarina (Ref. 104557).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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Van Tassell, J.L., J.-C. Joyeux, R.M. Macieira and L. Tornabene, 2015. Status of Gobiosoma (Teleostei: Gobiidae) from Brazil: description of a new species, redescription of G. hemigymnum, molecular phylogeny of the genus, and key to Atlantic species. Zootaxa 4007(4):451-480. (Ref. 104557)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))

  Niet bedreigd (LC) ; Date assessed: 29 January 2024

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(Ref. 82804)
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00741 (0.00346 - 0.01589), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau
(Ref. 69278)
3.2   ±0.3 se; based on size and trophs of closest relatives
Weerstandsvermogen
(Ref. 120179)
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Kwetsbaarheid van de visserij
(Ref. 59153)
Low vulnerability (10 of 100). 🛈