Length–weight relations of 39 continental-shelf anddeep-water fishes (Actinopterygii) from northwesternGulf of México

Authors: Chi-Espínola, Ariel A. ; Vega-Cendejas, M. Eugenia ; Hernández de Santillana, J. Mirella

DOI: 10.3897/aiep.53.101788

Abstract
Fishes from the northwestern Gulf of Mexico were surveyed during four oceanographic campaigns (February and October 2016, June and September 2017) using a shrimp trawl net and benthic sled net in 20 locations at depths that ranged from 43 to 3608 m. Length–weight relations (LWR) were estimated for 39 fish species (in alphabetical order): Bembrops gobioides (Goode, 1880); Centropristis philadelphica (Linnaeus, 1758); Chauliodus sloani Bloch et Schneider, 1801; Chlorophthalmus agassizi Bonaparte, 1840; Chloroscombrus chrysurus (Linnaeus, 1766); Citharichthys spilopterus Günther, 1862; Coelorinchus caelorhincus (Risso, 1810); Cyclopsetta chittendeni Bean, 1895; Cyclothone alba Brauer, 1906; Cyclothone braueri Jespersen et Tåning, 1926; Cy- clothone pseudopallida Mukhacheva, 1964; Dibranchus atlanticus Peters, 1876; Epigonus pandionis (Goode et Bean, 1881); Fowlerichthys radiosus (Garman, 1896); Laemonema goodebeanorum Meléndez et Markle, 1997; Lagocephalus laevigatus (Lin-naeus, 1766); Lepophidium brevibarbe (Cuvier, 1829); Lutjanus campechanus (Poey, 1860); Malacocephalus occidentalis Goode et Bean, 1885; Merluccius albidus (Mitchill, 1818); Micropogonias furnieri (Desmarest, 1823); Monolene sessilicauda Goode, 1880; Ogcocephalus declivirostris Bradbury, 1980; Peristedion greyae Miller, 1967; Porichthys plectrodon Jordan et Gilbert, 1882; Prionotus longispinosus Teague, 1951; Prionotus paralatus Ginsburg, 1950; Pristipomoides aquilonaris (Goode et Bean, 1896); Rhynchoconger flavus (Goode et Bean, 1896); Sardinella aurita Valenciennes, 1847; Saurida brasiliensis Norman, 1935; Sternoptyx diaphana Hermann, 1781; Symphurus diomedeanus (Goode et Bean, 1885); Synagrops bellus (Goode et Bean, 1896); Trachurus lathami Nichols, 1920; Trichiurus lepturus Linnaeus, 1758; Trichopsetta ventralis (Goode et Bean, 1885); Urophycis cirrata (Goode et Bean, 1896); Zalieutes mcgintyi (Fowler, 1952). The fish species studied represented 28 families (in alphabetical order): Antenna-riidae, Batrachoididae, Bembropidae, Bothidae, Carangidae, Chlorophthalmidae, Congridae, Cyclopsettidae, Cynoglossidae, Doro-somatidae, Epigonidae, Gonostomatidae, Lutjanidae, Macrouridae, Merlucciidae, Moridae, Ogcocephalidae, Ophidiidae, Phycidae, Sciaenidae, Serranidae, Sternoptychidae, Stomiidae, Synagropidae, Synodontidae, Tetraodontidae Trichiuridae, Triglidae. A new maximum standard length (SL) was recorded for Cyclothone alba, C. braueri, C. pseudopallida, and Lepophidium brevibarbe. A positive allometric growth was reported in nine species, negative allometric growth in 16 species, and isometric growth in 14 species.

Keywords: bathyal, continental shelf, deep-water fish, Gulf of Mexico, length–weight relation