Nephropides caribaeus

Nephropides caribaeus
Systematics
Order :	Decapods (decapoda)
Subordination :	Pleocyemata
Partial order :	Large crayfish (Astacidea)
Family :	Lobster-like (Nephropidae)
Genre :	Nephropides
Type :	Nephropides caribaeus
Scientific name of the genus
	Nephropides
	Manning , 1969
Scientific name of the species
	Nephropides caribaeus
	Manning , 1969

Nephropides caribaeus is a species of decapods from the monotypic genus Nephropides . It is common in the western Caribbean and can be easily distinguished from the other species of lobster-like.

description

The slightly upwardly curved rostrum of Nephropides caribaeus is rather narrow and extends beyond the bases of the two antennae (antennae and antennae peduncle). It has no back or abdomen, but two or three irregularly placed lateral thorns. The characteristic feature is the carapace , which is completely covered with small tubercles . In the longitudinal direction, a clear depression runs from the rostrum over the entire carapace on the back.

Like the carapace, the abdomen is also covered with flat nodules. The individual somites do not have a median, longitudinal ridge, but a transverse depression. The lateral attachment of a somite, the pleuron , is trapezoidal on the second, while the remaining somites are more triangular. The somites do not overlap, the posterior margin has a clear ridge. The telson is rather longer than wide and has numerous nodules.

The eyes are rather small, elongated and clearly pigmented in black. They do not extend beyond the first segment of the first antennae. The bases of the antennae have two or three lateral spines; but these can also be missing. The flagella of the first pair of antennae (antennae) are shorter than the carapace. The two inner flagella are slimmer and longer than the outer ones, which are laterally hairy towards the end (distal). The flagella of the second pair of antennas are very long and are significantly longer than the length of the body. The exopodite of the second antennae (Scaphocerite) is missing.

The large scissors on the first pair of striding legs are rather unequal and have innumerable tips and nodules. The scissor fingers are clearly hairy except for the extreme tip. The first pair of striding legs is about twice as long as the carapace. There are very small scissors on the second and third pair of striding legs. The two pairs of legs are about the same length, with points and nodules and with a few hairs on the scissors. Pairs of walking legs 4 and 5 do not have scissors.

In males, the first pair of swimming legs is elongated and hardened, while that of females is thin (filiform) and flexible. The rather elongated masculine appendix, a kind of clamp-like appendix in males, is about a third as long on the second swimming leg as the corresponding endopodite. The internal appendices are absent in both males and females.

The endo- and exopodites of the uropods also have innumerable round nodules on their back surface. The exopodite is provided with a clear diaeresis, a transverse depression.

The color of Nephropides caribaeus has been described as reddish. The scissors are rather bright red, the hair on the scissor fingers are white. The carapace and the antennae are red-orange, the abdomen is rather blotchy red. The length of the carapace ranges from 5 cm to 6 cm, with a total body length of up to 17.5 cm. Males and females are about the same size.

distribution and habitat

Nephropides caribaeus is native to the continental shelf or the deep sea of the western Caribbean Sea at depths of 455 m to 728 m. The distribution area extends from Belize to Colombia . The seabed populated by Nephropides caribaeus is more muddy than rocky.

Due to its large size, Nephropides caribaeus may be of commercial interest, but has not yet been fished. The lack of knowledge of the population and potential threat does not result in a data deficient classification by the IUCN .

Systematics and taxonomy

Raymond B. Manning described Nephropides caribaeus on the basis of several individuals and identified a male with a total body length of 17.5 cm, which was caught near Nicaragua ( 12 ° 25'N, 82 ° 15'W ) from a depth between 546 m and 582 m as a holotype . The genus name refers to the morphologically similar genus Nephrops , the Greek suffix '-ides' means 'descendant of'. The specific epithet refers to the Caribbean origin of the species. 12.416666666667 -82.25

Within the lobster-like family, Nephropides is most closely related to the genus Eunephrops . The classification of the genus Nephropides together with Nephropsis , Thymops and Thymopsis in the subfamily Thymopinae Holthuis, 1974 is out of date and no longer in use.

literature

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Lipke B. Holthuis: The Lobsters of the Superfamily Nephropidea of the Atlantic Ocean (Crustacea: Decapoda) . In: Bulletin of Marine Science . tape 24 , no. 4 , 1974, p. 723–884 ( nhm.org [PDF; 16.0 MB ; accessed on July 3, 2012]).
↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Raymond B. Manning: A new genus and species of lobster (Decapoda, Nephropidae) from the Caribbean Se . In: Crustaceana . tape 17 , no. 3 , 1969, p. 303-309 , doi : 10.1163 / 156854069X00655 .
^ Lipke B. Holthuis: Marine Lobsters of the World . An Annotated and Illustrated Catalog of Species of Interest to Fisheries Known to Date. Ed .: Food and Agriculture Organization (= FAO Fisheries Synopsis . Volume 125 ). Rome 1991, ISBN 978-92-5103027-1 ( fao.org ).
↑ ^a ^b Nephropides caribaeus in the endangered Red List species the IUCN 2012. Posted by: Butler, M., Chang, YJ Chan, TY, Cockcroft, A. MacDiarmid, A. & Wahle, R., 2011. Retrieved on 3rd July 2012.
↑ Dale Tshudy, Rafael Robles, Tin-Yam Chan, Ka Chai Ho, Ka Hou Chu, Shane T. Ahyong, Darryl L. Felder: Phylogeny of marine clawed lobster families Nephropidae Dana, 1852, and Thaumastochelidae Bate, 1888, based on mitochondrial genes . In: Joel W. Martin, Keith A. Crandall, Darryl L. Felder (Eds.): Decapod Crustacean Phylogenetics . CRC Press, 2009, ISBN 1-4200-9258-8 , pp. 357–368 ( nhm.org [PDF; 1,2 MB ; accessed on July 3, 2012]).

Web links

Middle lobsterette (Nephropides caribaeus). In: Marine Lobsters of the World. Marine Species Identification Portal, accessed July 3, 2012 (species description and drawing).

[Holthuis-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Lipke B. Holthuis: The Lobsters of the Superfamily Nephropidea of the Atlantic Ocean (Crustacea: Decapoda) . In: Bulletin of Marine Science . tape 24 , no. 4 , 1974, p. 723–884 ( nhm.org [PDF; 16.0 MB ; accessed on July 3, 2012]).

[Manning-2] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Raymond B. Manning: A new genus and species of lobster (Decapoda, Nephropidae) from the Caribbean Se . In: Crustaceana . tape 17 , no. 3 , 1969, p. 303-309 , doi : 10.1163 / 156854069X00655 .

[HolthuisFAO-3] Lipke B. Holthuis: Marine Lobsters of the World . An Annotated and Illustrated Catalog of Species of Interest to Fisheries Known to Date. Ed .: Food and Agriculture Organization (= FAO Fisheries Synopsis . Volume 125 ). Rome 1991, ISBN 978-92-5103027-1 ( fao.org ).

[IUCN-4] Nephropides caribaeus in the endangered Red List species the IUCN 2012. Posted by: Butler, M., Chang, YJ Chan, TY, Cockcroft, A. MacDiarmid, A. & Wahle, R., 2011. Retrieved on 3rd July 2012.

[Tshudy-5] Dale Tshudy, Rafael Robles, Tin-Yam Chan, Ka Chai Ho, Ka Hou Chu, Shane T. Ahyong, Darryl L. Felder: Phylogeny of marine clawed lobster families Nephropidae Dana, 1852, and Thaumastochelidae Bate, 1888, based on mitochondrial genes . In: Joel W. Martin, Keith A. Crandall, Darryl L. Felder (Eds.): Decapod Crustacean Phylogenetics . CRC Press, 2009, ISBN 1-4200-9258-8 , pp. 357–368 ( nhm.org [PDF; 1,2 MB ; accessed on July 3, 2012]).