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词汇 bullhead
释义

Definition of bullhead in English:

bullhead

nounˈbʊlhɛdˈbʊlˌhɛd
  • 1A small mainly freshwater Eurasian fish of the sculpin family, with a broad flattened head and spiny fins.

    杜父鱼

    Genera Cottus and Taurulus, family Cottidae: three species

    Example sentencesExamples
    • It has been suggested, by Marconato et al., that the male river bullhead is forced to eat the eggs simply in order to stay alive while brooding.
    • The 40-mile stretch of the River Ure includes important game fisheries with trout, grayling and even salmon, but there are worries that many less well-known species such as the ruffe and bullhead are in decline.
    • Johansson and Englund studied a waiting game between bullheads (Cottus gobio; a predatory fish) and case-making caddis fly larvae.
    • Each time a song sounds an alarm, another style comes drifting in, sometimes extolling the moonlight or the joys of a ‘sugar coated rhyme’ or the simple pleasures of fishing for bullheads.
    • Hundreds of bullheads and stoneloach, 49 trout and one eel were among the fish killed in Lockholme Beck, a tributary of Scandal Beck, at Ravenstonedale, near Kirkby Stephen.
    • Other species caught included a handful of pike up to about five pounds in weight and a single chub, plus minnows and bullheads too numerous to count.
  • 2An American freshwater catfish.

    鲇鱼

    Genus Ictalurus, family Ictaluridae: several species

    Example sentencesExamples
    • The state's inland lakes and streams also teem with fish, including panfish, gamefish, and bullhead, catfish and carp.
    • It could possibly be confused with the rare bullhead catfish which has eight barbules, compared to the six barbules of the wels.
    • They were from a ‘nursery’ school of bullheads harvested in mid- to late summer, possibly as late as September or early October.
    • However, in the first part of the 20th century bullheads were regularly stocked as a warm water sport fish in New England, and currently some catfishes are introduced for sport fishing (e.g., white catfish).
    • In Florida, the diet was comprised mainly of fishes, with gizzard shad, bullhead catfish, and small bluegill particularly common.
    • Most of the fish collected were small (such as sunfish and minnows), but taxa collected also included redhorse, bass, and bullhead.
    • Fortner and Pickford found that cortisol increased plasma chloride levels in hypophysectomized black bullhead, and that both prolactin and cortisol were necessary to maintain normal ion homeostatsis under isosmotic conditions.
    • Three impoundments are stocked with bluegill sunfish and brown bullhead and partially drained to an appropriate depth for stork foraging during the late summer months.
    • Also, freshwater prey species such as bullheads and catfish are more active nocturnally than diurnally and thus should be more available as prey.
    • The usual length of this moderate-sized bullhead is 20 to 36 cm.
    • Whereas bullheads (Ameiurus sp.) and flathead catfish are evenly represented in the hand-collected sample, the flotation sample indicates that small bullheads were most commonly eaten.
    • However, brown bullhead in the same study showed some resistance to the deleterious effects of mill effluents.
    • Banded killifish, American eel, and yellow bullhead were collected in 26%, 19% and 17% of sampled lakes respectively.
    • Finally, there's a shot of my two daughters, arms around each others’ necks, proudly displaying a puny little bullhead that got tangled in their line while fishing off the Berkeley pier.
    • They are usually too soft to withstand the attentions of small fish such as roach and small bream, as well as crayfish and the bullhead catfish.
    • In isolated enterocytes of black bullhead catfish, for instance, GLP - 1 application leads to substantial and dose-dependent increases in the capacity for glucose transport, as does exposure of the cells to glucagon.
    • All but five of the species (brown bullhead, yellow bullhead, white sucker, American eel, and banded killifish) described in this article were uncommon in northeastern lakes, occurring in 8% of sampled lakes.
    • Finally, green sunfish, carp, rock bass, and bullheads are all undesirable.
    • She amuses herself by holding her feet very still until bullheads come to nibble at her ankles.

Definition of bullhead in US English:

bullhead

nounˈbʊlˌhɛdˈbo͝olˌhed
  • 1An American freshwater catfish with four pairs of barbels around the mouth.

    Family Ictaluridae: several genera and numerous species, including the black bullhead (Ameiurus melas)

    Example sentencesExamples
    • The state's inland lakes and streams also teem with fish, including panfish, gamefish, and bullhead, catfish and carp.
    • It could possibly be confused with the rare bullhead catfish which has eight barbules, compared to the six barbules of the wels.
    • They are usually too soft to withstand the attentions of small fish such as roach and small bream, as well as crayfish and the bullhead catfish.
    • However, in the first part of the 20th century bullheads were regularly stocked as a warm water sport fish in New England, and currently some catfishes are introduced for sport fishing (e.g., white catfish).
    • Three impoundments are stocked with bluegill sunfish and brown bullhead and partially drained to an appropriate depth for stork foraging during the late summer months.
    • All but five of the species (brown bullhead, yellow bullhead, white sucker, American eel, and banded killifish) described in this article were uncommon in northeastern lakes, occurring in 8% of sampled lakes.
    • Whereas bullheads (Ameiurus sp.) and flathead catfish are evenly represented in the hand-collected sample, the flotation sample indicates that small bullheads were most commonly eaten.
    • Finally, there's a shot of my two daughters, arms around each others’ necks, proudly displaying a puny little bullhead that got tangled in their line while fishing off the Berkeley pier.
    • Finally, green sunfish, carp, rock bass, and bullheads are all undesirable.
    • However, brown bullhead in the same study showed some resistance to the deleterious effects of mill effluents.
    • Most of the fish collected were small (such as sunfish and minnows), but taxa collected also included redhorse, bass, and bullhead.
    • Fortner and Pickford found that cortisol increased plasma chloride levels in hypophysectomized black bullhead, and that both prolactin and cortisol were necessary to maintain normal ion homeostatsis under isosmotic conditions.
    • The usual length of this moderate-sized bullhead is 20 to 36 cm.
    • Banded killifish, American eel, and yellow bullhead were collected in 26%, 19% and 17% of sampled lakes respectively.
    • They were from a ‘nursery’ school of bullheads harvested in mid- to late summer, possibly as late as September or early October.
    • She amuses herself by holding her feet very still until bullheads come to nibble at her ankles.
    • Also, freshwater prey species such as bullheads and catfish are more active nocturnally than diurnally and thus should be more available as prey.
    • In isolated enterocytes of black bullhead catfish, for instance, GLP - 1 application leads to substantial and dose-dependent increases in the capacity for glucose transport, as does exposure of the cells to glucagon.
    • In Florida, the diet was comprised mainly of fishes, with gizzard shad, bullhead catfish, and small bluegill particularly common.
  • 2A small, mainly freshwater Eurasian fish of the sculpin family, with a broad flattened head and spiny fins.

    杜父鱼

    Genera Cottus and Taurulus, family Cottidae: three species

    Example sentencesExamples
    • Each time a song sounds an alarm, another style comes drifting in, sometimes extolling the moonlight or the joys of a ‘sugar coated rhyme’ or the simple pleasures of fishing for bullheads.
    • Hundreds of bullheads and stoneloach, 49 trout and one eel were among the fish killed in Lockholme Beck, a tributary of Scandal Beck, at Ravenstonedale, near Kirkby Stephen.
    • Johansson and Englund studied a waiting game between bullheads (Cottus gobio; a predatory fish) and case-making caddis fly larvae.
    • It has been suggested, by Marconato et al., that the male river bullhead is forced to eat the eggs simply in order to stay alive while brooding.
    • The 40-mile stretch of the River Ure includes important game fisheries with trout, grayling and even salmon, but there are worries that many less well-known species such as the ruffe and bullhead are in decline.
    • Other species caught included a handful of pike up to about five pounds in weight and a single chub, plus minnows and bullheads too numerous to count.
  • 3A North American water lily with globular yellow flowers.

    Nuphar variegatum, family Nymphaeaceae

    Example sentencesExamples
    • At this time, too, I harvested a good supply of bullhead lily and cattail roots, both of which make a good substitute for potatoes.
    • The creation of a beaver pond provides habitat for common aquatic plants like the Water-shield, Common Bladderwort, White Water-lily and Bullhead Lily.
    • The Menominee believed that the bullhead lily was a powerful medicine.
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