http://www.fishbase.org/Summary/speciesSummary.php?genusname=Monognathus&speciesname=boehlkei ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Monognathus&speciesname=boehlkei http://192.134.151.83/Summary/speciesSummary.php?genusname=Monognathus&speciesname=boehlkei ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Monognathus&speciesname=boehlkei https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Monognathus&speciesname=boehlkei ---> https://fishbase.mnhn.fr/summary/Monognathus-boehlkei.html
Monognathus boehlkei
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drawing shows typical species in Monognathidae.
Teleostei (teleosts) >
Saccopharyngiformes
(Swallowers and gulpers) >
Monognathidae
(Onejaws)
Etymology:
Monognathus:
Greek, monos = one + Greek, gnathos = jaw (Ref.
45335
)
;
boehlkei:
Named for the late James E. Böhlke in recognition of his valuable contributions to the study of apodal fishes.
.
More on authors:
Bertelsen
&
Nielsen
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; depth range 2500 - 5430 m (Ref.
34506
). Deep-water
Atlantic Ocean: the holotype was caught near Bermuda and the paratypes southwest of Madeira.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 7.0 cm TL male/unsexed; (Ref.
34506
)
Short description
Morphology
|
Morphometrics
Dorsal
soft rays
(total): 130-150;
Anal
soft rays
: 110 - 130.
M. boehlkei
differs from all other species of the genus by the high number of anal fin rays (110-130 vs. 42-88) and by an obtuse angle between rostral fang and frontal profile of skull. It is further distinguished by the following combination of characters: head short, snout blunt, skull length4.2-5.2% TL, rostral fang with dorsal profile slightly concave, anal fin origin below dorsal fin rays number 7-13, pectoral fin 2-3% TL, lower jaw nearly straight, and 6 lateral, subdermal spots of pigmentation (Ref.
34506
).
All specimens were taken in closing nets, one between 2500 and 3500 m with a bottom depth of 4563 m and the other specimens between 10-3- m above the bottom with soundings from 2960-5430 m (Ref.
34506
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Bertelsen, E. and J.G. Nielsen
, 1987. The deep sea eel family Monognathidae (Pisces, Anguilliformes). Steenstrupia, 13(4):141-198. (Ref.
34506
)
IUCN Red List Status (Ref.
130435
)
Data deficient (DD)
; Date assessed:
11 October 2018
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Ref.
123201
): 2.5 - 2.9, mean 2.7 °C (based on 105 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.6 ±0.59 se; based on food items.
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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mrius-barile
- 20 July 2016
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