Acanthemblemaria mangognatha — Details

Revillagigedo Barnacle Blenny learn more about names for this taxon

Overview

Comprehensive Description

Biology

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A small benthic reef fish which is common in shallow water, but also occurs to depths of at least 31 meters (Ref. 81029).
  • Hastings, P.A. and D.R. Robertson 1999 Acanthemblemaria atrata and Acanthemblemaria mangognatha, new species of eastern Pacific barnacle blennies (Chaenopsidae) from Isla de Coco, Costa Rica, and Islas Revillagigedo, Mexico, and their relationships with other barnacle blennies. Rev. fr. Aquariol 25(3-4):107-118. (Ref. 81029)   http://www.fishbase.org/references/FBRefSummary.php?id=81029&speccode=60573 External link.
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Description

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Common names: barnacle blenny (English), trambollín-cirripedio (Espanol), tubícola (Espanol)
 
Acanthemblemaria mangognatha Hastings & Robertson, 1999


Revillagigedos barnacle-blenny


Body elongate; short blunt head; top of head behind eyes covered with short spines, inner row between eyes on a bony ridge; spines on edge of and under eye, and on snout; cirri on nostrils, over eyes (1 pair, unbranched to deeply branched), but not on nape; 2 rows of well-developed teeth on side of roof of mouth; dorsal XXIII-XXV, 12-14; anal II, 24-27; pectoral 13.


Color variable; body often with series of brown blotches along midline, with 2 similar blotches on cheek; lower jaw yellow-orange at front, reddish purple at rear; small blue spots often on head & body; iris with orange or yellow inner ring; mating males  black, except for orange lower jaw and spot on cheek.


Size: 4 cm.

Habitat: barnacles and worm tubes on rocky shores.

Depth: 0-10 m.

Endemic to the Revillagigedo Islands.

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Distribution

Range Description

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This species is endemic to the Eastern Pacific, and is found only in the Revillagigedo Islands, including Clarion and Socorro Islands.
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Eastern Central Pacific: endemic to Revillagigedo Islands, Mexico.
  • Hastings, P.A. and D.R. Robertson 1999 Acanthemblemaria atrata and Acanthemblemaria mangognatha, new species of eastern Pacific barnacle blennies (Chaenopsidae) from Isla de Coco, Costa Rica, and Islas Revillagigedo, Mexico, and their relationships with other barnacle blennies. Rev. fr. Aquariol 25(3-4):107-118. (Ref. 81029)   http://www.fishbase.org/references/FBRefSummary.php?id=81029&speccode=60573 External link.
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Depth

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Depth Range (m): 0 (S) - 10 (S)
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Zoogeography

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See Map (including site records) of Distribution in the Tropical Eastern Pacific


 
Global Endemism: All species, East Pacific endemic, Tropical Eastern Pacific (TEP) endemic

Regional Endemism: All species, TEP endemic, TEP oceanic island (s) endemic, Revillagigedo Islands endemic, Island (s), Island (s) only

Residency: Resident

Climate Zone: Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)

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Physical Description

Morphology

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Dorsal spines (total): 23 - 25; Dorsal soft rays (total): 12 - 14; Analspines: 2; Analsoft rays: 24 - 27
  • Hastings, P.A. and D.R. Robertson 1999 Acanthemblemaria atrata and Acanthemblemaria mangognatha, new species of eastern Pacific barnacle blennies (Chaenopsidae) from Isla de Coco, Costa Rica, and Islas Revillagigedo, Mexico, and their relationships with other barnacle blennies. Rev. fr. Aquariol 25(3-4):107-118. (Ref. 81029)   http://www.fishbase.org/references/FBRefSummary.php?id=81029&speccode=60573 External link.
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Size

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Length max (cm): 4.0 (S)
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Size

Max. size

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3.1 cm SL (male/unsexed; (Ref. 81029))
  • Hastings, P.A. and D.R. Robertson 1999 Acanthemblemaria atrata and Acanthemblemaria mangognatha, new species of eastern Pacific barnacle blennies (Chaenopsidae) from Isla de Coco, Costa Rica, and Islas Revillagigedo, Mexico, and their relationships with other barnacle blennies. Rev. fr. Aquariol 25(3-4):107-118. (Ref. 81029)   http://www.fishbase.org/references/FBRefSummary.php?id=81029&speccode=60573 External link.
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Diagnostic Description

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This species is distinguished by the following characters: anterior one-third of the lower jaw in color, posterior part purple; some large specimens have the supraorbital cirrus deeply branched; a closed wedge of spines on the posterior part of the frontal; 2 rows of interorbital spines, the outer one incomplete, the central row with large spines on a raised ossified ridge; D XXIII-XXV,12-14 (35-38 total dorsal-fin elements; A II,24-27 (Ref. 81029).
  • Hastings, P.A. and D.R. Robertson 1999 Acanthemblemaria atrata and Acanthemblemaria mangognatha, new species of eastern Pacific barnacle blennies (Chaenopsidae) from Isla de Coco, Costa Rica, and Islas Revillagigedo, Mexico, and their relationships with other barnacle blennies. Rev. fr. Aquariol 25(3-4):107-118. (Ref. 81029)   http://www.fishbase.org/references/FBRefSummary.php?id=81029&speccode=60573 External link.
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Type Information

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Paratype for Acanthemblemaria mangognatha Hastings & Robertson
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): D. Robertson
Year Collected: 1990
Locality: Henslow Bay, Isla Socorro, Islas Revillagigedo, Mexico, Socorro Island, Colima, Mexico, Revillagigedo Islands, Pacific
  • Paratype: Hastings, P. A. & Robertson, D. R. 1999. Revue Francaise d'Aquariologie, Herpetologie. 25 (3-4): 115, 30-35.
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Holotype for Acanthemblemaria mangognatha Hastings & Robertson
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Photograph; Radiograph
Collector(s): D. Robertson
Year Collected: 1990
Locality: Henslow Bay, Isla Socorro, Islas Revillagigedo, Mexico, Socorro Island, Colima, Mexico, Revillagigedo Islands, Pacific
  • Holotype: Hastings, P. A. & Robertson, D. R. 1999. Revue Francaise d'Aquariologie, Herpetologie. 25 (3-4): 115, 30-35.
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Ecology

Habitat

Habitat and Ecology

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Habitat and Ecology
This demersal, reef-associated species inhabits barnacles and worm tubes on shallow rocky shores to depths of 10 m.

Systems
  • Marine
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Environment

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demersal; marine; depth range 13 - 13 m (Ref. 81029)
  • Hastings, P.A. and D.R. Robertson 1999 Acanthemblemaria atrata and Acanthemblemaria mangognatha, new species of eastern Pacific barnacle blennies (Chaenopsidae) from Isla de Coco, Costa Rica, and Islas Revillagigedo, Mexico, and their relationships with other barnacle blennies. Rev. fr. Aquariol 25(3-4):107-118. (Ref. 81029)   http://www.fishbase.org/references/FBRefSummary.php?id=81029&speccode=60573 External link.
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Habitat

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Salinity: Marine, Marine Only

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Bottom, Bottom only

Habitat: Reef (rock &/or coral), Reef only, Rocks, Barnacles & worm tubes, Reef associated (reef + edges-water column & soft bottom)

FishBase Habitat: Reef Associated
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Trophic Strategy

Feeding

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Feeding Group: Carnivore, Planktivore

Diet: mobile benthic crustacea (shrimps/crabs), zooplankton, pelagic fish eggs
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Life History and Behavior

Reproduction

Reproduction

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Egg Type: Benthic, Pelagic larva
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Conservation

Conservation Status

IUCN Red List Assessment

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Red List Category
VU
Vulnerable

Red List Criteria
D2

Version
3.1

Year Assessed
2010

Assessor/s
Bessudo, S., Dominici-Arosemena, A., Espinosa, H., Hastings, P.

Reviewer/s
Carpenter, K., Polidoro, B., Livingstone, S. (Global Marine Species Assessment Team)

Contributor/s

Justification
This species is only known from the Revillagigedo Islands. Regional experts support the plausible threat of the increased duration and frequency of ENSO events that can cause severe and rapid declines for restricted-range, shallow-water species in this region of the Eastern Tropical Pacific. This species is listed as Vulnerable under Criterion D2.
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Conservation status

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IUCN Red List: Not evaluated / Listed

CITES: Not listed
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Population

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Population
There is no information available on the population status of this species.

Population Trend
Unknown
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Threats

Threats

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Major Threats
In the Eastern Tropical Pacific, severe localized fish species declines have occurred after strong ENSO events that result in shallow waters that are too warm and nutrient poor for extended periods of time (Grove 1985, Edgar et al. 2009). The frequency and duration of ENSO events in this region of the Eastern Tropical Pacific (e.g. the up-welling zone off the coast of Peru, Ecuador, Colombia, Panama and the offshore islands) appears to be increasing (Glynn and Ault 2000, Soto 2001, Chen et al. 2004). Given this species' restricted distribution and shallow water habitat, oceanographic environmental changes, such as those associated with future ENSO events, may have detrimental effects on the survival of this species.
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Vulnerable (VU) (D2)
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Management

Conservation Actions

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Conservation Actions
The Revillagigedo Islands are designated as a Biosphere Reserve, the Archipielago de Revillagigedos (WDPA 2006). This species requires close population monitoring given its very restricted range.
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Wikipedia

Acanthemblemaria mangognatha

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Acanthemblemaria mangognatha, known commonly as the Revillagigedo barnacle blenny or the Revillagigedo barnacle in Mexico,[1] is a species of chaenopsid blenny in the genus Acanthemblemaria.[2] It is endemic to the Revillagigedo Islands of Mexico, in the eastern central Pacific ocean.[2] It was named by P.A. Hastings and D.R. Robertson in 1999,[3] and can reach a maximum length of 3.1 centimetres.[2]

References

  1. ^ Common names for Acanthemblemaria mangognatha at www.fishbase.org.
  2. ^ a b c Acanthemblemaria mangognatha at www.fishbase.org.
  3. ^ Hastings, P. A. and D. R. Robertson 1999 (2 Feb.) [ref. 23826] Acanthemblemaria atrata and Acanthemblemaria mangognatha, new species of eastern Pacific barnacle blennies (Chaenopsidae) from Isla del Coco, Costa Rica, and Islas Revillagigedo, Mexico, and their relationships with other barnacle blennies. Revue française d'Aquariologie Herpétologie v. 25 (no. 3-4) [1998]: 107-118.


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