Related items
Showing items related by metadata.
-
ArticleDescription of two new species of sandlances, genus Bleekeria (Perciformes, Ammodytidae) from the Andaman Sea (northeastern Indian Ocean) 2021
Also available in:
No results found.Two new species of Bleekeria Günther, 1862 are described from specimens collected in the Andaman Sea off the coast of Myanmar during bottom surveys conducted by the R/V Dr Fridtjof Nansen in 2015 and 2018. They are distinguished from each other and from congeners by a combination of morphological and meristic characters as well as fin coloration and genetic variance. Bleekeria albicauda sp. nov. has pelvic fins, 40–41 dorsal-fin rays, 54–55 total vertebrae, no teeth in jaws, 4 scale rows between dorsal-fin origin and lateral line, a single row of about 10 scales on mid-upper part of opercle, scales on central part of body clearly shorter than their height, caudal fin with white upper and lower lobes when fresh (unique within the genus). Bleekeria nigrilinea sp. nov. has no pelvic fins, 37–39 dorsal-fin rays, 49–50 total vertebrae, 2½ scale rows between dorsal-fin origin and lateral line (the smallest count within the genus with B. estuaria of Mozambique brackish water), 5–6 scales on mid-upper part of opercle arranged in a single row, scales on central part of body clearly longer than their height, upper and lower margins of caudal fin black when fresh (unique within the genus). The COI gene sequences of the two new species showed clear genetic divergence (pairwise K2P, >10 %) from Bleekeria estuaria Randall & Ida, 2014 and Bleekeria mitsukurii (Jordan & Evermann, 1902). A key to the species of Bleekeria is provided. -
Book (stand-alone)FAO. Kodici ta' kondotta ghal sajd responsabbli 1995Minn żminijiet antiki, is-sajd kien sors ewlieni ta 'ikel għall-umanità u fornitur ta' impjiegi u benefiċċji ekonomiċi għal dawk involuti f'din l-attività. Il-ġid tar-riżorsi akkwatiċi kien preżunt bħala rigal illimitat tan-natura. Madankollu, b’għarfien akbar u l-iżvilupp dinamiku tas-sajd wara t-tieni gwerra dinjija, din il-ħrafa sfat quddiem ir-realizzazzjoni li r-riżorsi akkwatiċi, għalkemm rinnovabbli, mhumiex infiniti u għandhom jiġu mmaniġġjati kif suppost, jekk il-kontribut tagħhom għall-ikel , il-benesseri ekonomiku u soċjali tal-popolazzjoni dinjija li qed tikber għandu jkun sostnut. L-introduzzjoni mifruxa f’nofs is-sebgħinijiet ta ’żoni ekonomiċi esklussivi (ŻEE) u l-adozzjoni fl-1982, wara deliberazzjonijiet twal, tal-Konvenzjoni tan-Nazzjonijiet Uniti dwar il-Liġi tal-Baħar ipprovdiet qafas ġdid għall-immaniġġjar aħjar tar-riżorsi tal-baħar. Ir-reġim legali l-ġdid ta ’l-oċean ta lill-Istati kostali drittijiet u responsabbiltajiet għall-immaniġġjar u l-użu tar-riżorsi tas-sajd fiż-ŻEE tagħhom li jħaddnu madwar 90 fil-mija tas-sajd marittimu tad-dinja. Ġurisdizzjoni nazzjonali estiża bħal din kienet pass meħtieġ iżda insuffiċjenti lejn il-ġestjoni effiċjenti u l-iżvilupp sostenibbli tas-sajd. Bosta Stati kostali komplew jiffaċċjaw sfidi serji billi, nieqsa, esperjenza u riżorsi finanzjarji u fiżiċi, huma ppruvaw jiġbdu benefiċċji akbar mis-sajd fiż-ŻEE tagħhom.
-
Users also downloaded
Showing related downloaded files
No results found.