{"id":3389,"date":"2022-10-19T15:06:31","date_gmt":"2022-10-19T15:06:31","guid":{"rendered":"http:\/\/delphis.cetacei.org\/?page_id=3389"},"modified":"2023-02-21T11:10:56","modified_gmt":"2023-02-21T11:10:56","slug":"striped-dolphin","status":"publish","type":"page","link":"https:\/\/oceanomaredelphis.org\/en\/striped-dolphin\/","title":{"rendered":"striped dolphin"},"content":{"rendered":"<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-12914d2 stk-block-background stk--has-background-overlay\" data-block-id=\"12914d2\"><style>.stk-12914d2{background-image:url(http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_banner.jpg) !important;border-style:solid !important;border-color:var(--theme-palette-color-2,#002a76) !important;border-top-width:1px !important;border-right-width:0px !important;border-bottom-width:1px !important;border-left-width:0px !important;min-height:400px !important;max-width:1920px !important}@media screen and (max-width:999px){.stk-12914d2{min-height:300px !important}}@media screen and (max-width:689px){.stk-12914d2{background-image:url(http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2023\/01\/Sc_banner_phone.jpg) !important;min-height:400px !important}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-12914d2-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v3 stk-column stk-block-column--v2 stk-block stk-2a0fb5c\" data-block-id=\"2a0fb5c\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-2a0fb5c-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-2a0fb5c-inner-blocks\"><\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-spacer stk-block-spacer stk--no-padding stk-block stk-12909ba\" data-block-id=\"12909ba\"><style>.stk-12909ba{height:25px !important}<\/style><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-74c6394\" data-block-id=\"74c6394\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-74c6394-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v3 stk-column stk-block-column--v2 stk-block stk-36ba91c\" data-block-id=\"36ba91c\"><style>@media screen and (min-width:690px){.stk-36ba91c{flex:1 1 33.3% !important}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-36ba91c-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-36ba91c-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-1a519da\" id=\"stenella-striata\" data-block-id=\"1a519da\"><h2 class=\"stk-block-heading__text\">Striped dolphin<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-33d1dcd\" data-block-id=\"33d1dcd\"><p class=\"stk-block-text__text\">Kingdom: Animalia<br>Phylum: Chordata<br>Class: Mammalia<br>Order: Cetartiodactyla<br>Infraorder: Cetacea<br>Parvorder: Odontoceti<br>Family: Delphinidae<br>Genus: Stenella<br>Species:<em>&nbsp;Stenella coeruleoalba&nbsp;<\/em>(Meyen 1833)<\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-block-column--v3 stk-column stk-block-column--v2 stk-block stk-d13e157\" data-block-id=\"d13e157\"><style>@media screen and (min-width:690px){.stk-d13e157{flex:1 1 66.7% !important}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-d13e157-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-d13e157-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-f58d1a4\" data-block-id=\"f58d1a4\"><style>.stk-f58d1a4{box-shadow:5px 5px 3px 3px rgba(0,0,0,0.3) !important;border-style:solid !important;border-color:var(--theme-palette-color-5,#e1e8ed) !important}<\/style><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-2520\" src=\"http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/09\/disegno-stenella.jpg\" width=\"680\" height=\"400\" srcset=\"https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/09\/disegno-stenella.jpg 680w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/09\/disegno-stenella-300x176.jpg 300w\" sizes=\"auto, (max-width: 680px) 100vw, 680px\" \/><\/figure><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-5cc7d03\" id=\"descrizione\" data-block-id=\"5cc7d03\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Description<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-90a6fbe\" data-block-id=\"90a6fbe\"><p class=\"stk-block-text__text\">The adult striped dolphin reaches an average length of 2.2 meters and a weight of 80-100 kg. The male is slightly larger than the female. Rostrum long and tapered, teeth sharp and small, body slender and siluriform, dorsal fin small and falcate, pectoral fins tapered. Like the common dolphin, the striped dolphin's livery is indicative of species recognition. Coloration is variable, back grayish brown or dark blue, belly white.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-f050c34\" data-block-id=\"f050c34\"><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-3492\" src=\"http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc.jpg\" width=\"1600\" height=\"780\" srcset=\"https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc.jpg 1600w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc-300x146.jpg 300w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc-1024x499.jpg 1024w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc-768x374.jpg 768w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc-1536x749.jpg 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-99afcaa\" data-block-id=\"99afcaa\"><style>.stk-99afcaa{margin-bottom:50px !important}<\/style><p class=\"stk-block-text__text\">A narrow dark band runs along the sides, starting from a spot around the eye and ending by widening around the anal opening; another thinner band starts from the eye and ends at the base of the pectoral fin; a third band forms from the dorsal fin forward. The striped dolphin is a fast swimmer, often with huge jumps out of the water.<br><br>The striped dolphin is a cosmopolitan species distributed in temperate and tropical waters.<br>The striped dolphin lives in groups that range from twenty to a hundred individuals. In the Mediterranean, where it reproduces during the summer, it is the most common species. It feeds on bluefish and squid, revealing a certain food opportunism.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-1f69e12\" id=\"stato-di-conservazione-in-mediterraneo\" data-block-id=\"1f69e12\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Mediterranean Conservation Status<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-8ea84cf\" data-block-id=\"8ea84cf\"><p class=\"stk-block-text__text translation-block\">In 2021, the Mediterranean subpopulation of striped dolphins moved from the vulnerable category to <strong>Least Concern<\/strong> on the IUCN Red List.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-888c7fd\" data-block-id=\"888c7fd\"><style>.stk-888c7fd{border-style:solid !important;border-color:var(--theme-palette-color-3,#3A4F66) !important}<\/style><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-3496\" src=\"http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/LC.jpg\" width=\"1600\" height=\"408\" srcset=\"https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/LC.jpg 1600w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/LC-300x77.jpg 300w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/LC-1024x261.jpg 1024w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/LC-768x196.jpg 768w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/LC-1536x392.jpg 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ad3f1b9\" data-block-id=\"ad3f1b9\"><p class=\"stk-block-text__text translation-block\">The Mediterranean subpopulation of striped dolphins is subject to several threats that, cumulatively, have reduced its size and slowed its recovery.<br>Between 1990 and 1992, a morbillivirus outbreak killed thousands of specimens, reducing the size of the groups to less than one-third of previous levels. Pollution (PCBs and other organochlorines) has been identified as a factor causing immunosuppression and sterility. Other significant threats include bycatches in fishing gear and the decrease in resources (prey) due to intense fishing exploitation.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ca839a1\" data-block-id=\"ca839a1\"><p class=\"stk-block-text__text\"><strong>Listed in<\/strong><br><a rel=\"noreferrer noopener\" href=\"https:\/\/www.cms.int\/en\/species\/appendix-i-ii-cms\" target=\"_blank\">CMS App. II<\/a> (Mediterranean and Eastern Tropical Pacific populations).<br><a rel=\"noreferrer noopener\" href=\"https:\/\/cites.org\/eng\/app\/appendices.php\" target=\"_blank\">CITES App. II<\/a><br><a href=\"https:\/\/www.coe.int\/en\/web\/bern-convention\/appendices\" target=\"_blank\" rel=\"noreferrer noopener\">Bern Convention App. II<\/a><br>Barcelona Convention, <a href=\"https:\/\/www.rac-spa.org\/sites\/default\/files\/annex\/annex_2_en_20182.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">SPA\/BD Protocol, Annex II<\/a><br>EU Habitats Directive: <a href=\"https:\/\/lexparency.org\/eu\/31992L0043\/ANX_IV\/\" target=\"_blank\" rel=\"noreferrer noopener\">Annex IV<\/a><\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-4904ed1\" data-block-id=\"4904ed1\"><style>.stk-4904ed1{margin-bottom:50px !important}<\/style><p class=\"stk-block-text__text\"><strong>Global status<\/strong><br>Least Concern<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-700497d\" id=\"la-popolazione-locale\" data-block-id=\"700497d\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">The local population<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9b196b5\" data-block-id=\"9b196b5\"><p class=\"stk-block-text__text\">Every year, large groups of striped dolphins consisting of up to 100 or more individuals can be seen off the island of Ischia in the Cuma canyon area.<br>In our study area, striped dolphins are often sighted in association with common dolphins.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-21d06c4\" data-block-id=\"21d06c4\"><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-3499\" src=\"http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_mum.jpg\" width=\"1600\" height=\"1001\" srcset=\"https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_mum.jpg 1600w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_mum-300x188.jpg 300w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_mum-1024x641.jpg 1024w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_mum-768x480.jpg 768w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_mum-1536x961.jpg 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f318f1b\" data-block-id=\"f318f1b\"><p class=\"stk-block-text__text\">Feeding, socialization, and breeding behaviors are observed for both species. Newborns are spotted in July, August, and September.<br>Our data showed a relevant overlap in distribution between common and striped dolphins suggesting the possible existence of antagonism between the species in habitat use.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-60e0665\" data-block-id=\"60e0665\"><style>.stk-60e0665{border-style:solid !important;border-color:var(--theme-palette-color-3,#3A4F66) !important}<\/style><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-3500\" src=\"http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_map.jpg\" width=\"1600\" height=\"401\" srcset=\"https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_map.jpg 1600w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_map-300x75.jpg 300w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_map-1024x257.jpg 1024w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_map-768x192.jpg 768w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_map-1536x385.jpg 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-a1b92fb\" data-block-id=\"a1b92fb\"><style>.stk-a1b92fb{margin-bottom:50px !important}<\/style><p class=\"stk-block-text__text\">Stenella is the most frequently sighted species during our observations and the most abundant in the study area. Sightings occur throughout the year.<br>Stenella is distributed throughout the study area, both in coastal waters and further offshore in pelagic waters. However, the species tends to concentrate in areas northwest and southwest of the island of Ischia, corresponding to the canyons of Cuma and Punta Imperatore.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-823bca1\" id=\"acustica\" data-block-id=\"823bca1\"><h2 class=\"stk-block-heading__text stk-block-heading--use-theme-margins\">Acoustics<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b4e5ca3\" data-block-id=\"b4e5ca3\"><p class=\"stk-block-text__text\">Striped dolphins produce high-frequency whistles extending from a few Hz to more than 20 kHz, often lasting less than a minute. Striped dolphin clicks have energy peaks from 50 to 150 kHz.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-7075a8a\" data-block-id=\"7075a8a\"><style>.stk-7075a8a{border-style:solid !important;border-color:var(--theme-palette-color-3,#3A4F66) !important}<\/style><figure class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-3315\" src=\"http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_spettrogramma.jpg\" width=\"1600\" height=\"684\" srcset=\"https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_spettrogramma.jpg 1600w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_spettrogramma-300x128.jpg 300w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_spettrogramma-1024x438.jpg 1024w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_spettrogramma-768x328.jpg 768w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2022\/10\/Sc_spettrogramma-1536x657.jpg 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-29c6b2c\" data-block-id=\"29c6b2c\"><p class=\"stk-block-text__text has-text-align-center\"><strong>Spectrogram of clicks and whistles of striped dolphin<\/strong><\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-631afa8\" data-block-id=\"631afa8\"><p class=\"stk-block-text__text\">The other vocalizations of the species are highly varied but poorly studied. Preliminary analyses of whistles (n whistles 209, n samples 5696) recorded in the study area show mean duration values of 0.35 s, range 0.12-0.9, DS \u00b10.2, and mean frequency values of 9262 Hz, range 4823-18561 Hz, DS \u00b12218.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-spacer stk-block-spacer stk--no-padding stk-block stk-b851a7b\" data-block-id=\"b851a7b\"><\/div>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-16b2b0f\" data-block-id=\"16b2b0f\"><a class=\"stk-link stk-img-wrapper stk-image--shape-stretch\" href=\"http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2023\/01\/SCHEDA-AVVISTAMENTO-CETACEI.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-3771\" src=\"http:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2023\/01\/bnr-1024x201-1.png\" width=\"1024\" height=\"201\" srcset=\"https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2023\/01\/bnr-1024x201-1.png 1024w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2023\/01\/bnr-1024x201-1-300x59.png 300w, https:\/\/oceanomaredelphis.org\/wp-content\/uploads\/2023\/01\/bnr-1024x201-1-768x151.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>Stenella striata Regno: AnimaliaPhylum: ChordataClasse: MammaliaOrdine: CetartiodactylaInfraordine: CetaceaParvordine: OdontocetiFamiglia: DelphinidaeGenere: StenellaSpecie:&nbsp;Stenella coeruleoalba&nbsp;(Meyen 1833) Descrizione La stenella adulta raggiunge una lunghezza media di 2.2 metri ed un peso di 80-100 kg. Il maschio \u00e8 leggermente pi\u00f9 grande della femmina. Rostro lungo e assottigliato, denti appuntiti e piccoli, corpo snello e siluriforme, pinna dorsale piccola e falcata, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3389","page","type-page","status-publish","hentry"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/oceanomaredelphis.org\/en\/wp-json\/wp\/v2\/pages\/3389","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oceanomaredelphis.org\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/oceanomaredelphis.org\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/oceanomaredelphis.org\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oceanomaredelphis.org\/en\/wp-json\/wp\/v2\/comments?post=3389"}],"version-history":[{"count":20,"href":"https:\/\/oceanomaredelphis.org\/en\/wp-json\/wp\/v2\/pages\/3389\/revisions"}],"predecessor-version":[{"id":4183,"href":"https:\/\/oceanomaredelphis.org\/en\/wp-json\/wp\/v2\/pages\/3389\/revisions\/4183"}],"wp:attachment":[{"href":"https:\/\/oceanomaredelphis.org\/en\/wp-json\/wp\/v2\/media?parent=3389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}