Deprecated: urlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummarylinks.lib.php on line 216

Deprecated: urlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummarylinks.lib.php on line 218

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummarylinks.lib.php on line 260
Glaucostegus petiti, Madagascar guitarfish <br /> <b>Deprecated</b>: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in <b>/var/www/html/includes/speciessummary.lib.php</b> on line <b>463</b><br />

Deprecated: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 2942

Deprecated: urlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 2903

You can sponsor this page

Glaucostegus petiti (Chabanaud, 1929)

Madagascar guitarfish
Upload your photos and videos
 Google image
Image of Glaucostegus petiti (Madagascar guitarfish)
No image available for this species;
drawing shows typical species in Glaucostegidae.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Glaucostegidae (Giant guitarfishes)

Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 4383

Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 4525
Etymology: More on author: Chabanaud.


Deprecated: str_ireplace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 10

Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 4033

Environment: milieu / climate zone / depth range / distribution range Ecology


Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 197
Marine; demersal.
Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 1769

Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 1779
Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Indian Ocean: known from the type locality on the west coast of Madagascar.

Size / Weight / Age

Maturity:
Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/speciessummary.lib.php on line 1526
Lm ?  range ? - ? cm

Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 1636

Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 1650

Biology     Glossary (e.g. epibenthic)

Ovoviviparous (Ref. 50449).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449).

Main reference Upload your references | References | Coordinator | Collaborators

Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses


Deprecated: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /var/www/html/includes/speciessummary.lib.php on line 463
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators
Ecology
Ecology
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduction
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larvae
Larval dynamics
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos
Anatomy
Gill areas
Brains
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetics
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaborators
Taxonomy
Common names
Synonyms
Morphology
Morphometrics
Pictures
References
References

Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00145 - 0.00950), b=3.09 (2.87 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.6   ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 36

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 36

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 36

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 36

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 36

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 36

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 36

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41

Deprecated: number_format(): Passing null to parameter #1 ($num) of type float is deprecated in /var/www/html/includes/class/NutrientsClass.php on line 41