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New Locality, Depth, and Size Records and Species Character

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New Locality, Depth, and Size Records and Species Character Caribbean Journal of Science, Vol. 40, No. 1, 88-119, 2004 Copyright 2004 College of Arts and Sciences University of Puerto Rico, Mayagu¨ez New Locality, Depth, and Size Records and Species Character Modifications of Some Caribbean Deep-Reef/Shallow Slope Fishes and a New Host and Locality Record for the Chimaera Cestodarian LUCY BUNKLEY-WILLIAMS1 AND ERNEST H. WILLIAMS,JR.2 1Caribbean Aquatic Animal Health Project, Department of Biology, University of Puerto Rico, P.O. Box 9012, Mayagu¨ez, PR 00861-9012 [email protected] 2Department of Marine Sciences, University of Puerto Rico at Mayagu¨ez, P.O. Box 908, Lajas, Puerto Rico 00667-0908 [email protected] ABSTRACT.—New geographic localities are noted for chimaera cestodarian, Gyrocotyle rugosa, from the central Atlantic; it and Antillean snake eel, Ophichthus spinicauda; Caribbean lanternshark, Etmopterus hillianus; and dwarf cat shark, Scyliorhinus torrei, for the Caribbean Sea; those, black verilus, Verilus sor- didus; dusky shark, Carcharhinus obscurus; lesser amberjack, Seriola fasciata; and longfinned bulleye, Cookeolus japonicus, for the insular Caribbean; all above (except Antillean snake eel), and bearded brotula, Brotula barbata; bigeye sixgill shark, Hexachus nakamurai; Darwin’s slimehead, Gephyroberyx darwinii; longsnout scorpionfish, Pontinus castor; short bigeye, Pristigeny altus; and tropical pomfret, Eumegistus brevorti, for Puerto Rico. Gulf of Mexico, Sargasso Sea, and Mexico are new for Antillean snake eel; French Guiana, Guyana, Isla La Tortuga, Jamaica, Pedro Bank, St. Croix, and St. Thomas for bearded brotula; Barbados, Dominican Republic, Florida, Florida Keys, Gulf of Mexico, St. Thomas, southern Caribbean Sea, and Tortola for bigeye sixgill shark; Honduras for black verilus; St. Croix for Caribbean chimaera; Vieques Island for Caribbean lanternshark; Anguilla, Colombia, Cozumel, Jamaica, Suriname, Venezuela, Yucata´n for Darwin’s slimehead; Saba Bank for dusky shark; Barbados and the Pedro Bank for lesser amberjack; Bar- bados, Dominican Republic, and Grenada for longsnout scorpionfish; Dominican Republic, Grenadines, and off South America for short bigeye; Campeche Bank, Panama, and Gulf of Mexico for shortjaw lizardfish, Saurida normani; Bahamas, Barbados, Campeche Bank, Cay Sal Bank, Dominican Republic, Grand Bahama Island, Inagua Islands, Panama for tattler, Serranus phoebe; Bimini, Lang Bank, and St. Croix for tropical pomfret. Also 17 depth and 2 size records are noted, and 5 species diagnostic characters modified. All these additions indicate how poorly this ichthyofauna is known. KEYWORDS.—locality, depth, size, species characters, parasite, deep-reef/shallow slope fishes INTRODUCTION usually begins rather steeply (∼45°) and of- ten extends several hundred to several Records of fish species of an island, coun- thousand meters in depth (Colin 1978). try, or other terrestrial geographic locality Thus, the 200 m limit includes considerable are based on specimens collected at 200 m amounts of slope fauna in Caribbean is- or shallower (Robins et al. 1991a; Williams lands. A 100 m limit might be more logical and Bunkley-Williams in press). This depth for the insular Caribbean; however, in cool- was established as the usual maximum water incursion areas (e.g., Trinidad), some depth of the continental shelf. Caribbean deep-water fauna may practically reach the islands have an insular, not continental surface (Bunkley-Williams and Williams shelf. Insular shelves may end at a depth of unpubl. data). as little as 9 m (pers. observ.), but usually Fishes of the deep-reef/upper insular end in 15-100 m. Below the continental or slope (70 to 400-500 m) are among the poor- insular shelf, a continental or insular slope est known in the Caribbean (Colin 1974 [50- begins. On Caribbean islands, this slope 500 m]) because this habitat is too deep for SCUBA collection and too irregular for ef- fective trawling. However, as the insular Author for correspondence: LBW shelves of Caribbean islands have become 88 CARIBBEAN DEEP-REEF/SHALLOW SLOPE FISHES 89 over fished, the deep-reef/upper insular complex. The English common names slope habitats have become increasingly “Caribbean chimaera” and “chimaera ces- more important and exploited. Neverthe- todarian” are proposed. less, only limited and sporadic trap and hook-and-line samples are available for sci- entific study from this habitat. Commercial MATERIALS AND METHODS and sport fishermen in Puerto Rico col- lected 22 fish specimens, representing 2 All our fish specimens were caught with classes, 10 orders, 15 families, and 16 spe- hook-and-line, longline, or fish trap and cies of fishes, over the last 30 years and were frozen following capture. Some were either gave them to us for parasite exami- photographed (Figs. 1-10), their abdominal nations or for species identification. In an cavities were opened with an incision, and effort to document the geographic distribu- they were fixed in 20% formalin and depos- tion of these 16 species, we provide addi- ited in the Ichthyological Collections of the tional information based on unpublished U.S. National Museum of Natural History museum records. The combined records (USNM), Smithsonian Institution, Division represent one new geographic record for of Fishes, Washington, DC, or the Verte- the central Atlantic; four for the Caribbean brate Collection (UPRM), University of Pu- Sea; eight for the insular Caribbean; two for erto Rico at Mayagu¨ ez, Magueyes Island the Gulf of Mexico; one each for the south- Laboratories, La Parguera, PR. Meristic ern Caribbean Sea, the western Gulf of counts and morphometric measurements Mexico, the Sargasso Sea, and off north- were taken, but only standard length (SL) western South America; 14 for Puerto Rico; [tip of lower jaw to base of hypural four for Barbados, Dominican Republic; “plate”], fork length (FL) [tip of lower jaw three for St. Croix (USVI); two for the Cam- to posterior edge of center of caudal fin peche Bank (off Mexico), Jamaica, Panama, (tail)], and/or total lengths (TL) [tip of the Pedro Bank (off Jamaica) and St. Tho- lower jaw to posterior tip of caudal fin mas (USVI); one for Anguilla, Bahamas, Bi- (tail)] and exceptional values are presented mini (Bahamas), Cay Sal Bank (Bahamas), here. The Antillean snake eel specimen was Colombia, Cozumel, Florida (USA), Florida x-rayed to determine the number of verte- Keys, French Guiana, Grand Bahama Is- brae, as was a specimen of tropical pomfret land (Bahamas), Grenada, Grenadines, to determine the number of anal rays. The Guyana, Honduras, Inagua Islands (Baha- radiographs were deposited in the USNM mas), Isla La Tortuga (Venezuela), Lang and the California Academy of Science Bank (St. Croix), Mexico, the Saba Bank, (CAS), San Francisco, CA, respectively. The Suriname, Tortola (British Virgin Islands), spiral intestine (spiral valve) of the Car- Venezuela, Vieques Island (Puerto Rico), ibbean chimaera was excised, examined for Yucata´n (Mexico); eight shallower depth parasites, and replaced in the abdominal records are noted, four of these extend- cavity. Cestodarian parasites were fixed in ing up onto the insular shelf (Puerto Rico 5% formalin and deposited in the U.S. Na- Plateau) depth range for the first time, tional Parasite Collection (USNPC), Belts- and nine deeper depth records extend ville, MD. Museum records were examined previously known ranges; two maximum from the American Museum of Natural weight or length records are noted; and History (AMNH), New York, NY; Acad- one new parasite host record is noted. The emy of Natural Sciences of Philadelphia 8th and 9th known specimen of the black (ANSP), Philadelphia, PA; Natural History verilus, 10th Caribbean chimaera, 10th and Museum (BMNH), London, England; CAS; 11th tropical pomfret, 11th Antillean snake Field Museum of Natural History (FMNH), eel are recorded. Species characters are The Field Museum, Chicago, IL; Ichthyol- modified for the Antillean snake eel, Car- ogy Collection (FSBC), Florida Fish and ibbean chimaera, Caribbean lanternshark, Wildlife Conservation Commission, dwarf catshark, and tropical pomfret, and Florida Marine Research Institute, St. Pe- the latter species may represent a species tersburg, Florida; International Game Fish 90 BUNKLEY-WILLIAMS AND WILLIAMS Association (IGFA), Ft. Lauderdale, FL; sometimes recorded as deep-water records University of Kansas Fish Collection (KU), for an island or continent but are not offi- KU Natural History Museum and Biodiver- cially considered a part of that fauna (Den- sity Research Center, Lawrence, KS; Natu- nis 2003; Robins et al. 1991a; Williams and ral History Museum of Los Angeles County Bunkley-Williams in press). We only call Fish Collection (LACM), Los Angeles, CA; records from 200 m, or shallower, “new lo- Museum of Comparative Zoology (MCZ), cality records” for islands or countries. We Harvard University, Cambridge, MA; call deeper collections “new deep-water Royal Ontario Museum (ROM), Toronto, records”. Ontario, Canada; Scripps Institution of Oceanography Collection (SIO), Santa Bar- bara, CA; Texas A&M University Coopera- RESULTS tive Wildlife Collection (TCWC), Fish Col- lection, College Station, TX; University of Class Chondrichthyes – cartilaginous fishes British Columbia Fish Museum, University of British Columbia (UBC), Vancouver, Order Chimaeriformes, Family Chimaeridae – Canada; Florida Museum of Natural His- chimaeras tory (UF), University of Florida, Gaines- ville, FL; UPRM; Fish Division, Museum of Chimaera cubana Howell Rivero,
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