Species of Euryplacidae (Brachyura) in western Mexico

Crustaceana ◽  
2021 ◽  
Vol 94 (2) ◽  
pp. 251-261
Author(s):  
Michel E. Hendrickx
Keyword(s):  
Dissolved Oxygen ◽  
Gulf Of California ◽  
Ovigerous Female ◽  
Environmental Data ◽  
Depth Range ◽  
Sediment Composition ◽  
Distribution Limit ◽  
Western Mexico ◽  
Northern Distribution

Abstract Two species of Euryplacidae were collected in western Mexico. Trizocarcinus dentatus (12 localities) and Euryplax polita (4 localities) were both found in the Gulf of California. In the case of E. polita 11 specimens (5 males, 5 females, one ovigerous female) were obtained, while in the case of T. dentatus 42 specimens (25 males, 10 females, 7 ovigerous females) were collected. The northern distribution limit of E. polita is extended to the northern Gulf of California (28°16′N 111°36′W). Environmental data for both species are provided, including depth range, temperature, dissolved oxygen, and sediment composition.

Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3. Family Lestrigonidae

Zootaxa ◽  
2021 ◽  
Vol 4974 (1) ◽  
pp. 169-187
Author(s):  
REBECA GASCA ◽  
MICHEL E. HENDRICKX
Keyword(s):  
Deep Water ◽  
Gulf Of California ◽  
World Wide ◽  
Total Catch ◽  
Sampling Methodology ◽  
Distribution Limit ◽  
Western Mexico ◽  
The Family

Thirteen species belonging to five genera of pelagic amphipods of the family Lestrigonidae were collected during a deep-water survey off western Mexico: four species of Hyperietta, two species of Hyperioides, five species of Lestrigonus, and one species each of Phronimopsis and Themistella. This represents 93% of all known species of Lestrigonidae world-wide. A total of 1092 specimens were obtained in 40 sampling localities in the Gulf of California (35) and off southwestern Mexico (5). Although sampling methodology was rather heterogeneous, two species, Hyperioides sibaginis and Lestrigonus bengalensis, were particularly abundant (336 and 562 specimens) and frequent (present in 24 and 31 localities) in the samples, representing 82% of the total catch. The southernmost distribution limit of Hyperietta stebbingi is extended to off SW Mexico. Of the 13 species that were collected during this survey, 10 and 8 species co-occurred at two sampling localities in the SE Gulf of California. 

The genus Spirontocaris Spence Bate, 1888 (Caridea, Decapoda, Thoridae) in western Mexico

Zootaxa ◽  
2017 ◽  
Vol 4320 (2) ◽  
pp. 305
Author(s):  
MICHEL E. HENDRICKX ◽  
MANUEL AYÓN-PARENTE
Keyword(s):  
Baja California ◽  
First Record ◽  
Environmental Data ◽  
Baja California Peninsula ◽  
Organic Carbon Content ◽  
Depth Range ◽  
Western Mexico ◽  
Oxygenated Water ◽  
Minimum Zone ◽  
San Carlos

Four species of Spirontocaris are known from a few records along the coast of the Baja California Peninsula, Mexico: S. prionoata (Todos Santos Bay), S. sica (between San Benito and Cedros Islands), S. snyderi (Cedros Island), and S. truncata (off San Carlos Point). During exploratory surveys off the west coast of the Baja California Peninsula, Mexico, two specimens of Spirontocaris holmesi Holthuis, 1947, and 143 of S. sica Rathbun, 1902 (10 males, 128 females, 2 ovigerous females, and 3 damaged specimens) were collected in benthic trawl and sledge. Both species are illustrated and described. The material of S. holmesi was collected in a single locality, at 220 m depth (known depth range is 150–300 m) and is the first record for western Mexico, while the material of S. sica was collected in five localities, from 710–1102 m depth (known range, 88–849 m), increasing significantly the number of specimens known for this species. Environmental data indicate that S. sica lives below the Oxygen Minimum Zone, in poorly oxygenated water (0.22 to 0.40 ml O2/l), in a temperature range of 4.38 to 5.81 °C. Sediments associated with this species are dominated by silt (>72% in 4 out of 5 localities), with organic carbon content of 18 to 52 mgCorg/g. 

Rediscovery of the deep-water species Ypsilocucumis californiae Massin & Hendrickx, 2011 (Echinodermata; Holothuroidea; Ypsilothuriidae) in western Mexico

Zootaxa ◽  
2020 ◽  
Vol 4742 (1) ◽  
pp. 139-148
Author(s):  
ANA K. LUNA-CRUZ ◽  
MICHEL E. HENDRICKX
Keyword(s):  
Deep Water ◽  
Gulf Of California ◽  
Organic Carbon Content ◽  
Depth Range ◽  
Ecological Data ◽  
The West ◽  
Western Mexico ◽  
Deep Water Species ◽  
Density Values ◽  
Minimum Zone

Four specimens of the sea cucumber Ypsilocucumis californiae Massin & Hendrickx, 2011 were obtained during sampling operations off western Mexico. These specimens permit identification of this species as a member of the deep-water holothuroid community off the west coast of the Baja California Peninsula. Previous records correspond to four locations (including the type locality) in the Gulf of California, where eight specimens were collected. SEM ossicles images are provided for the first time and new ecological data associated with the presence of this species are available: temperature, 5.34‒8.38 °C; dissolved oxygen, 0.15‒0.28 ml O2/l and salinity, 34.42‒34.51 ups. The specimens were present in a wide variety of sediments with an organic carbon content of 3.18‒5.20 mg C/g (5.47‒8.95 % organic matter). Density values indicated low abundance of this species in the area (2.63‒3.94 orgs/ha). Records presented here were in a depth range from 540 to 776 m, which corresponds to the lower limit of the Oxygen Minimum Zone of the eastern Pacific. Additional records are provided for the West Atlantic Ypsilocucumis asperrima (Théel, 1886) and a key to the species of Ypsilocucumis is provided. 

Squat lobsters (Crustacea: Decapoda: Anomura: Galatheoidea) from off the northwestern coast of the Baja California Peninusla, Mexico

Zootaxa ◽  
2021 ◽  
Vol 4965 (2) ◽  
pp. 375-384
Author(s):  
MICHEL E. HENDRICKX
Keyword(s):  
West Coast ◽  
Gulf Of California ◽  
Baja California ◽  
Baja California Peninsula ◽  
The West ◽  
Western Mexico ◽  
Exploratory Survey ◽  
Northwestern Coast ◽  
First Time ◽  
Squat Lobsters

Four species of squat lobsters were collected off the northwestern coast of the Baja California Peninsula, Mexico, during an exploratory survey of fishing resources. Janethogalathea californiensis, described from California was previously known from off the west coast of the Baja California Peninsula (two localities) and from the Gulf of California (three localities). Of the three species of Munida collected during the survey, M. tenella is recorded off the west coast of the Baja California Peninsula for the first time. These are the fourth record of M. hispida and the second record of M. quadrispina in western Mexico.

Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 6. Superfamily Vibilioidea. Families Paraphronimidae and Vibiliidae

Zootaxa ◽  
2021 ◽  
Vol 5071 (4) ◽  
pp. 563-578
Author(s):  
REBECA GASCA ◽  
MICHEL E. HENDRICKX
Keyword(s):  
Deep Water ◽  
Gulf Of California ◽  
World Wide ◽  
Junior Synonym ◽  
Western Mexico

Ten species belonging to the families Paraphronimidae and Vibiliidae were collected during a deep-water survey off western Mexico: two species of Paraphronima and eight species of Vibilia. This represents about 40% of all known species of these two genera world-wide. A total of 419 males and 607 females were obtained in 39 samples from localities in the Gulf of California (33) and off southwestern Mexico (6). Vibilia armata was by far the most frequently (32 localities) and most abundantly (687 specimens, 67% of the total) collected species, followed by V. longicarpus (231 specimens in nine localities) and P. crassipes (35 specimens in 9 localities). Co-ocurrence of species of Vibilioidea in our samples was very low, with maxima of seven and five species collected in the same sample, once each. Considering previous records, a total of 16 species of Vibilioidea (almost 70% of all known species) have now been reported from western Mexico: two species of Paraphronima and 14 species of Vibilia, including V. australis occasionally reported in the area as its junior synonym, V. wolterecki.  

Records and distribution of Syscenus infelix in the deep Mediterranean (Crustacea: Isopoda: Aegidae)

2003 ◽  
Vol 83 (4) ◽  
pp. 775-777 ◽  
Author(s):  
Brian Kensley ◽  
Joan E. Cartes
Keyword(s):  
Depth Distribution ◽  
Ovigerous Female ◽  
Depth Range ◽  
The Mediterranean ◽  
Parasitic Isopod

The parasitic isopod Syscenusinfelix is recorded from the Mediterranean, based on 19 specimens from a depth range of 375–2071 m. The first ovigerous female of the species is also recorded. Patterns of possible parasitism were suggested based on the depth distribution of S. infelix, and their possible host macrourid fish below 900 m depth in the Catalano-Balearic basin.

scholarly journals Multi-source analysis reveals latitudinal and altitudinal shifts in range of Ixodes ricinus at its northern distribution limit

2011 ◽  
Vol 4 (1) ◽  
Author(s):  
Solveig Jore ◽  
Hildegunn Viljugrein ◽  
Merete Hofshagen ◽  
Hege Brun-Hansen ◽  
Anja B Kristoffersen ◽  
...  
Keyword(s):  
Ixodes Ricinus ◽  
Source Analysis ◽  
Distribution Limit ◽  
Northern Distribution
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